1. The ballastless track grout turning disease treatment method is characterized by comprising the following steps:

arranging grouting holes leading to a foundation bed on two sides of the track slab within the range of the grout turnover disease, and grouting into the grouting holes to discharge accumulated water in the foundation bed;

waterproof sealing treatment is carried out on the expansion joints of the track slab within the range of the grout turnover disease;

and a water-collecting open channel is arranged on the line-to-line sealing layer between the two tracks.

2. The ballastless track grout-turning disease improvement method of claim 1, wherein grouting holes leading to a foundation bed are formed in two sides of the track slab within the grout-turning disease range, and the method comprises the following steps:

excavating construction grooves in the closed layers on the two sides of the track, and arranging grouting holes leading to the inside of the foundation bed in the construction grooves;

the ballastless track grout turning disease treatment method further comprises the following steps:

and after grouting is finished in the grouting hole, performing waterproof sealing treatment on the construction groove.

3. The ballastless track grout-turning disease improvement method of claim 1, wherein grouting holes leading to a foundation bed are formed in two sides of the track slab within the grout-turning disease range, and the method further comprises the following steps:

and a grouting hole leading to the foundation bed is formed downwards from the outer side of the upper surface of the base of the track.

4. The ballastless track grout-turning disease treatment method according to claim 2, further comprising the following steps:

and after excavating construction grooves on the sealing layers on the two sides of the track and before grouting into the grouting holes, cleaning slurry in the gaps of the two side walls of the base of the track within the range of grout overturning diseases, and drying.

5. The ballastless track grout turnover disease remediation method of claim 1, wherein the grouting into the grouting holes comprises:

in the grouting process, the grouting pressure is kept constant and continuous, and the grouting pressure is less than or equal to 0.4 MPa.

6. The ballastless track grout turnover disease remediation method of claim 2, wherein the waterproof sealing treatment of the construction groove comprises the following steps:

backfilling the construction groove, and recovering the sealing layers on the two sides of the track;

a waterproof filling groove is newly formed at the junction of the base of the track and the sealing layers on the two sides of the track;

and filling a first waterproof sealing material into the waterproof filling groove, wherein the first waterproof sealing material is a fluid or semi-fluid waterproof sealing material which is cured at normal temperature.

7. The ballastless track grout turning disease remediation method of claim 1, wherein the waterproof sealing treatment is performed on the expansion joints of the track slab within the grout turning disease range, and comprises the following steps:

removing the filler in the expansion joint;

at least two different waterproof sealing materials are sequentially filled in the expansion joint from bottom to top, and a preset distance is reserved between the waterproof sealing material at the lowest part and the waterproof sealing material at the upper part.

8. The ballastless track grout turning disease remediation method of claim 7, wherein the clearing of the filler in the expansion joint comprises:

drilling and penetrating from any end of two ends of the expansion joint to the other end to remove the filler in the expansion joint, wherein a slope surface which is easy to drain to one end is formed at the bottom of the expansion joint after drilling.

9. The ballastless track grout turnover disease remediation method of claim 7, wherein at least two different waterproof sealing materials are sequentially filled in the expansion joint from bottom to top, and the waterproof sealing material at the lowest position is separated from the waterproof sealing material at the upper position by a preset distance, and the method comprises the following steps:

removing sundries drilled in the expansion joint;

placing a second waterproof sealing material;

polishing the inner wall of the expansion joint above the second waterproof sealing material;

placing a separation plate in the expansion joint above the second waterproof sealing material;

filling a third waterproof sealing material in the expansion joint above the isolation plate;

the second waterproof sealing material is a solid waterproof sealing material, and the third waterproof sealing material is a normal-temperature cured fluid or semi-fluid waterproof sealing material.

10. The ballastless track grout turnover disease remediation method of claim 9, wherein the placing of the second waterproof sealing material comprises:

placing a second waterproof sealing material in the expansion joint, wherein two ends of the second waterproof sealing material respectively correspond to two sides of the track base;

sealing plates are arranged on two sides of the base of the track and correspond to the positions of the second waterproof sealing materials, the sealing plates are fixed on two sides of the base of the track through bolts and nuts, and the nuts are further provided with anti-loosening structures.

Background

The roadbed is an important offline foundation of a ballastless track structure of the high-speed railway, and is used as a foundation bed on the upper part of the roadbed to bear the power action of a train and be influenced by the change of hydrological climate environment. According to the field survey data of the opened operating high-speed line, the slurry turning disease is found to be a typical disease form of the ballastless track subgrade in the rainy region. Fine particles in graded broken stones in the surface layer of the foundation bed and permeated water form slurry, and the slurry is extruded out from gaps of the base of the track to cause slurry turning diseases.

The damage of the slurry turning disease is great, the roadbed can sink unevenly, the rail surface state is seriously bad, and the line maintenance work is increased. For a ballastless track line of a high-speed railway, the vertical rigidity of a spatial multilayer structure is not matched due to a grout turning defect, the longitudinal rigidity of a roadbed is not uniform, the normal operation of a train is influenced, and the driving safety is endangered in a serious case.

Disclosure of Invention

In view of this, the embodiment of the invention is expected to provide a method for treating a ballastless track grout-turning disease, which can solve the grout-turning disease of the ballastless track.

In order to achieve the above purpose, the technical solution of the embodiment of the present invention is realized as follows:

the embodiment of the invention provides a method for treating ballastless track grout-turning diseases, which comprises the following steps:

arranging grouting holes leading to a foundation bed on two sides of the track slab within the range of the grout turnover disease, and grouting into the grouting holes to discharge accumulated water in the foundation bed;

waterproof sealing treatment is carried out on the expansion joints of the track slab within the range of the grout turnover disease;

and a water-collecting open channel is arranged on the line-to-line sealing layer between the two tracks.

In the above scheme, the slip casting hole that leads to the foundation bed is seted up to the both sides of the track board in the disease scope of starching, includes:

excavating construction grooves in the closed layers on the two sides of the track, and arranging grouting holes leading to the inside of the foundation bed in the construction grooves;

the ballastless track grout turning disease treatment method further comprises the following steps:

and after grouting is finished in the grouting hole, performing waterproof sealing treatment on the construction groove.

In the above scheme, the slip casting hole leading to the foundation bed is seted up to the both sides of the track board in the disease scope of starching, still includes:

and a grouting hole leading to the foundation bed is formed downwards from the outer side of the upper surface of the base of the track.

In the above scheme, the method for treating the ballastless track grout-turning disease further comprises the following steps:

and after excavating construction grooves on the sealing layers on the two sides of the track and before grouting into the grouting holes, cleaning slurry in the gaps of the two side walls of the base of the track within the range of grout overturning diseases, and drying.

In the above scheme, the grouting into the grouting hole includes:

in the grouting process, the grouting pressure is kept constant and continuous, and the grouting pressure is less than or equal to 0.4 MPa.

In the above scheme, the waterproof sealing treatment of the construction groove comprises:

backfilling the construction groove, and recovering the sealing layers on the two sides of the track;

a waterproof filling groove is newly formed at the junction of the base of the track and the sealing layers on the two sides of the track;

and filling a first waterproof sealing material into the waterproof filling groove, wherein the first waterproof sealing material is a fluid or semi-fluid waterproof sealing material which is cured at normal temperature.

In the above-mentioned scheme, to the expansion joint of orbital base is waterproof sealing treatment, include:

removing the filler in the expansion joint;

at least two different waterproof sealing materials are sequentially filled in the expansion joint from bottom to top, and a preset distance is reserved between the waterproof sealing material at the lowest part and the waterproof sealing material at the upper part.

In the above-mentioned scheme, clear away the filler in the expansion joint includes:

drilling and penetrating from any end of two ends of the expansion joint to the other end to remove the filler in the expansion joint, wherein a slope surface which is easy to drain to one end is formed at the bottom of the expansion joint after drilling.

In the above-mentioned scheme, be in at least two kinds of waterproof sealing material are filled in the expansion joint, and the waterproof sealing material of below and the waterproof sealing material of top separate and have the preset distance, include:

removing sundries drilled in the expansion joint;

placing a second waterproof sealing material;

polishing the inner wall of the expansion joint above the second waterproof sealing material;

placing a separation plate in the expansion joint above the second waterproof sealing material;

filling a third waterproof sealing material in the expansion joint above the isolation plate;

the second waterproof sealing material is a solid waterproof sealing material, and the third waterproof sealing material is a normal-temperature cured fluid or semi-fluid waterproof sealing material.

In the above aspect, the placing of the second waterproof sealing material includes:

placing a second waterproof sealing material in the expansion joint, wherein two ends of the second waterproof sealing material respectively correspond to two sides of the base of the track;

sealing plates are arranged on two sides of the base of the track and correspond to the positions of the second waterproof sealing materials, the sealing plates are fixed on two sides of the base of the track through bolts and nuts, and the nuts are further provided with anti-loosening structures.

According to the ballastless track grout turnover disease treatment method provided by the embodiment of the invention, graded broken stones can enter the inside of the foundation bed through grouting and drainage, and effluent water is replaced, so that the effects of reinforcing the graded broken stones and preventing water from infiltrating again can be achieved; the expansion joint is subjected to waterproof sealing treatment again, so that water can be prevented from permeating into the inside of the foundation bed through the expansion joint; the open channel for water collection is arranged between the two tracks, so that water in the line space sealing layer can be collected to the open channel for water collection and discharged, and rainwater is prevented from soaking the line space sealing layer outside the base for a long time and permeating into the foundation bed through the junction of the line space sealing layer and the base. Therefore, the method for treating the ballastless track grout-turning disease can solve the grout-turning disease of the ballastless track.

Other beneficial effects of the embodiments of the present invention will be further described in conjunction with the specific technical solutions in the detailed description.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that are required to be used in the description of the embodiments will be briefly described below. It should be understood that the drawings described below are only a part of the drawings of the embodiments of the present invention, and that other drawings may be obtained by those skilled in the art without inventive effort.

Fig. 1 is a schematic flow chart of a ballastless track grout-turning disease treatment method according to an embodiment of the invention;

fig. 2 is a schematic plan view (schematic plan view) of a track in the ballastless track grout turning disease treatment method according to the embodiment of the invention;

fig. 3 is a schematic transverse cross-sectional view of a track in the ballastless track grout turning disease treatment method according to the embodiment of the invention;

fig. 4 is a schematic transverse cross-sectional view illustrating waterproof sealing treatment of an expansion joint in the ballastless track grout turning disease treatment method according to the embodiment of the invention;

fig. 5 is a schematic transverse cross-sectional view of a construction groove for waterproof sealing treatment in the ballastless track grout-turning disease treatment method of the embodiment of the invention.

Description of reference numerals:

20 a base bed; 21 a base; 22 a track plate; 23 steel rails; 24 line-to-line sealing layers; 25 roadbed enclosing layer; 31 collecting open water channels; 32, constructing a groove; 33 a first grouting hole; 331 a grouting pipe; 34 a second grouting hole; 35 a first waterproof sealing material; 40, expansion joint; 41 a second waterproof sealing material; 42 a separator plate; 43 a third water sealing material.

Detailed Description

Aiming at the problems in the prior art, the embodiment of the invention provides a method for treating the ballastless track grout-turning damage, which comprises the following steps:

arranging grouting holes leading to a foundation bed on two sides of the track slab within the range of the grout turnover disease, and grouting into the grouting holes to discharge accumulated water in the foundation bed;

waterproof sealing treatment is carried out on the expansion joints of the track slab within the range of the grout turnover disease;

and a water-collecting open channel is arranged on the line-to-line sealing layer between the two tracks.

According to the ballastless track grout turnover disease treatment method provided by the embodiment of the invention, graded broken stones can enter the inside of the foundation bed through grouting and drainage, and effluent water is replaced, so that the effects of reinforcing the graded broken stones and preventing water from infiltrating again can be achieved; the expansion joint is subjected to waterproof sealing treatment again, so that water can be prevented from permeating into the inside of the foundation bed through the expansion joint; the open channel for water collection is arranged between the two tracks, so that water in the line space sealing layer can be collected to the open channel for water collection and discharged, and rainwater is prevented from soaking the line space sealing layer outside the base for a long time and permeating into the foundation bed through the junction of the line space sealing layer and the base. Therefore, the method for treating the ballastless track grout-turning disease can solve the grout-turning disease of the ballastless track.

The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Also, the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from these embodiments without inventive step, are within the scope of protection of the present invention.

The embodiment provides a ballastless track grout-turning disease treatment method, as shown in fig. 1, the ballastless track grout-turning disease treatment method includes:

step 101: two sides of the track slab 22 in the range of the grout turnover disease are provided with grouting holes leading to the foundation bed 20, and grouting is carried out in the grouting holes so as to discharge accumulated water in the foundation bed 20;

step 102: waterproof sealing treatment is carried out on the expansion joint 40 of the track slab 22 within the range of the grout turnover disease;

step 103: a water collecting open channel 31 is arranged on the line-to-line sealing layer 24 between the two tracks.

Here, it should be noted that the above steps may be performed in no order other than the sequence number or fixed order unless otherwise specifically noted in the following description.

Here, the track is, for example, oriented in a longitudinal direction, in a horizontal direction perpendicular to the longitudinal direction, in a transverse direction, and in an up-down direction, in a vertical direction.

Here, for example, as shown in fig. 2 and 3, the track may be configured to include, from bottom to top: the roadbed 20, the base 21, the track plate 22 and the steel rail 23, the two sides of the track are closed layers in the transverse direction, an inter-line closed layer 24 is arranged between two adjacent tracks, and a roadbed closed layer 25 is arranged outside the tracks. The sealing layers are all laid on the foundation bed 20, and the two sides or one side of the sealing layers are connected with the base 21. The embodiment of the invention mainly relates to a foundation bed 20, a base 21, a track slab 22 and a sealing layer, wherein the foundation bed 20 is a part of a roadbed which is susceptible to train load, hydrology and climate, and is mainly the upper part of the roadbed. The foundation bed 20 generally includes a foundation bed bottom layer and a foundation bed surface layer, and in the method for treating a grout-turning disease, only the surface layer of the foundation bed 20, also called the surface layer of the roadbed, is generally referred to, and for brevity, in the following description, the foundation bed surface layer is sometimes referred to simply as the foundation bed 20. Since the bed 20 is mainly composed of the packing, the inside of the bed 20 mentioned in the above-mentioned method may also be referred to as a packing portion of the bed 20.

Here, for example, the range of the grout stirring disease may be: and (5) carrying out mud pumping on the turned slurry in the region of about 2m before and after the turned slurry pumping.

Here, grouting is constructional engineering grouting, i.e., a method of injecting some curable grout into cracks or pores of a geotechnical ground by a proper method, and improving its physical and mechanical properties by means of replacement, filling, extrusion, and the like. In the present embodiment, water entering the inside of the foundation bed 20 due to leakage, i.e., water in the surface layer of the foundation bed, is displaced by the slurry. The filling material in the surface layer of the foundation bed is generally graded broken stone and has gaps for containing water, and the grouting can fill the gaps and replace the water to play a role in reinforcing the graded broken stone and preventing the water from permeating again.

Here, the slurry used for grouting is illustratively a high polymer chemical slurry, which has strong pourability, fluidity and water absorption, and has high compressive strength, strong water resistance, good early strength performance and small expansion coefficient after curing. The grouting is finished without maintenance, the slurry can be put into use after being cured for two hours, and the operation of the train is not influenced. And by means of the grouting method, large-area excavation and backfilling are not needed, the repairing workload is small, the construction time is short, the occupied space is small, the operation is simple and convenient, the required construction equipment is few, and the cost is low.

Here, the slurry of the present embodiment also has, illustratively, the following features:

a. the slurry has low viscosity, and can be rapidly diffused into small gaps in the roadbed graded broken stone layer to fill the pores fully.

b. And (4) carrying out micro-foaming, compacting the roadbed-level crushed stone layer, and extruding out saturated and redundant water.

c. Is not sensitive to water, and can still maintain higher density and compressive strength when meeting water.

d. The early strength of the material can meet the operation requirement of the skylight point. The compressive strength of the material is not less than 15MPa in 90 minutes.

Here, the expansion joints 40 are exemplarily and uniformly spaced along the longitudinal direction of the track, and the expansion joints 40 run in a transverse direction. The sealing material in the expansion joint 40 is prone to be degraded in elasticity due to aging in a complex service environment, and then loses the sealing function. Therefore, the waterproof sealing treatment needs to be performed again. In addition, the track with the grout-turning damage is likely to be caused by the loss of the waterproof function of the filler in the expansion joint 40, so that the waterproof sealing treatment is more necessary. In this way, water infiltration into the inside of the foundation bed through the expansion joints 40 can be avoided.

Here, the open water collecting channel 31 is for collecting rainwater and guiding the rainwater to flow into a water collecting well (not shown in the drawings) by way of example. In this way, rainwater and the like can be prevented from soaking the inter-line sealing layer 24 outside the base 21 for a long time and seeping into the inside of the foundation bed 20 through the junction of the inter-line sealing layer 24 and the base 21.

Here, the cross-sectional shape of the open water collecting channel 31 may be, for example, a rectangular groove, and the width of the rectangular groove may be 250 mm. The concrete of the original line sealing layer 24 can be removed during slotting, and the slot is formed by pouring fiber concrete again. The drainage gradient of the open water collection ditch 31 is determined according to the height difference between the interline sealing layer 24 and the water collection well. Here, the fiber concrete may be C25 fiber concrete, for example.

According to the ballastless track grout turnover disease treatment method provided by the embodiment of the invention, graded broken stones can enter the inside of the foundation bed through grouting and drainage, and effluent water is replaced, so that the effects of reinforcing the graded broken stones and preventing water from infiltrating again can be achieved; the expansion joint is subjected to waterproof sealing treatment again, so that water can be prevented from permeating into the inside of the foundation bed through the expansion joint; the open channel for water collection is arranged between the two tracks, so that water in the line space sealing layer can be collected to the open channel for water collection and discharged, and rainwater is prevented from soaking the line space sealing layer outside the base for a long time and permeating into the foundation bed through the junction of the line space sealing layer and the base. Therefore, the method for treating the ballastless track grout-turning disease can solve the grout-turning disease of the ballastless track.

According to an alternative embodiment of the present invention, in step 101, two sides of the track slab 22 within the scope of the grout turnover disease are provided with grouting holes leading to the foundation bed 20, including:

excavating construction grooves 32 in the closed layers on the two sides of the track, and arranging grouting holes leading to the inside of the foundation bed 20 in the construction grooves 32;

thus, grouting is more convenient. Because the grouting is generally poured into the bed 20 from the junction between the bottom surface of the base 21 and the bed 20, the pouring path is short, the pouring can be completed more quickly, and the grouting can be poured into all places inside the bed 20 as much as possible.

Here, the construction groove 32 is, for example, excavated from the junction between the base 21 of the rail and the sealing layer, and extends toward the sealing layer. Illustratively, the transverse width of the construction groove 32 is 500mm, and the depth is the same as the thickness of the sealing layer, so that the outer side wall of the base 21 of the rail can be completely exposed, and a grouting hole can be conveniently formed. Illustratively, the construction slot 32 may be slotted by a cutter, with greater cutting efficiency.

Here, the present embodiment may exemplarily include two kinds of the first injection holes 33 and the second injection holes 34, and what is described above may be the first injection holes 33, the first injection holes 33 being distributed longitudinally along the line, one first injection hole 33 being provided every 800 mm. This allows the slurry to be poured as far as possible into all places inside the bed 20. The size of the first grout hole 33 may be: the hole depth is about 150mm, the hole diameter is 8mm, and the starting end of the first grouting hole 33 is located at the junction of the outer side wall of the base 21 and the foundation bed 20 and extends towards the inside of the foundation bed 20 along the horizontal direction. Here, for example, after the first grouting hole 33 is formed, the grouting pipe 331 is installed, and since the first grouting hole 33 is in the construction tank 32 and the position of the opening is relatively low, a grouting pump is connected through the grouting pipe 331, so that grouting is more convenient. The grouting pipe 331 extends into the grouting hole by 150mm and is exposed by 150mm, so that the grouting pipe 331 is ensured to be firmly installed. After the grouting pipe 331 is installed, the gap between the grouting pipe 331 and the grouting hole is sealed by quick setting mortar, so that the slurry is prevented from leaking from the gap.

Here, for example, the ballastless track grout turning disease treatment method further includes:

and after grouting is finished in the grouting hole, performing waterproof sealing treatment on the construction groove 32.

After grouting, the grouting holes and the construction grooves 32 need to be backfilled and recovered. However, after the construction groove 32 is backfilled and recovered, the junction of the new concrete and the old concrete is a waterproof weak area, and water easily permeates into the foundation bed from the junction, so that waterproof sealing treatment is required.

According to an alternative embodiment of the present invention, the two sides of the track slab 22 within the scope of the grout turnover disease are provided with grouting holes leading to the foundation bed 20, and the grouting holes further comprise:

and grouting holes leading to the foundation 20 are formed downwards from the outer side of the upper surface of the base 21 of the track.

Thus, the two grouting holes can simultaneously perform grouting in different areas, so that the grouting can be completed more quickly and can be poured to all places inside the foundation bed 20 as much as possible. The injection holes may be referred to as second injection holes 34, and the second injection holes 34 may be: and the second grouting holes 34 are distributed along the longitudinal direction of the line and are arranged every 800mm, and the sizes can be as follows: the hole depth is about 300mm, the hole diameter is 14mm, the distance is 150mm from the outer side wall of the base 21, and the hole depth is based on the fact that the base 21 is drilled through. The upper surface of the base 21 has a larger diameter than the first injection hole 33 because it is located at a relatively far distance from the inside of the bed 20.

Here, in the present embodiment, both the first injection hole 33 and the second injection hole 34 may be formed on both sides of the rail, that is, may be symmetrically formed. However, when grouting, the grout may be poured into all the places inside the foundation bed 20 through only one side, or may be opened only at one side.

According to an optional embodiment of the invention, the ballastless track grout turning disease treatment method further comprises the following steps:

after the construction grooves 32 are dug in the sealing layers on the two sides of the track and before grouting is carried out in the grouting holes, slurry in the gaps (not shown in the figure) of the two side walls of the base 21 of the track in the range of the grout turnover disease is cleaned, and drying treatment is carried out.

The seam is generally through the entire base 21 in the transverse direction and is communicated with the filler of the foundation 20, and the slurry in the slurry-turning disease is mainly extruded from the seam of the base 21. The seams on the two sides of the base 21 are not normally visible in the enclosed layer and are therefore also called the base plate lower seams.

Here, the requirement for cleaning is, illustratively: the gap opening is as clean, dry and smooth as possible. The cleaning can be done by blowing or drying the side of the base 21 with a high pressure air gun or a hot air gun, etc. Therefore, the gap is cleaned, and more grout can be filled in grouting. Thus, this step is also performed before the grouting.

Further, after the gap is cleaned, the grouting process can be observed more conveniently, for example, when glue solution emerges from the gap corresponding to the grouting hole, that is, the grouting of the grouting hole is completed is indicated, the grouting can be stopped, and the grouting of other grouting holes can be replaced.

It should be noted that this step is typically performed after the construction groove 32 is excavated, since most of the gap is exposed only after the construction groove 32 is excavated.

According to an optional embodiment of the present invention, in step 101, the grouting into the grouting hole includes:

in the grouting process, the grouting pressure is kept constant and continuous, and the grouting pressure is less than or equal to 0.4 MPa.

Thus, the grouting can be completed at one time, and the slurry can be uniformly delivered to each part inside the foundation bed 20. For example, the grouting pressure may be set to 0.1 to 0.2MPa, which is a grouting pressure set according to the viscosity of the slurry, the resistance of the grouting, and the like, and the slurry can be uniformly delivered to each portion inside the foundation bed 20.

And in the grouting process, observing whether the adjacent or opposite grouting holes have the slurry to emerge at any time, stopping grouting and closing the grouting holes if the slurry is emerged, and replacing the grouting holes for grouting until all the grouting holes are completely grouted. Thus, it can be filled, but not overfilled. Here, the opposite injection hole refers to the other of both sides of the rail.

According to an alternative embodiment of the present invention, as shown in fig. 5, the waterproof sealing treatment of the construction slot 32 includes:

backfilling the construction groove 32 and recovering the sealing layers on the two sides of the rail;

a waterproof filling groove (not shown in the figure) is newly formed at the junction of the base 21 of the track and the sealing layers on the two sides of the track;

here, the waterproof filling groove illustratively extends from the intersection of the base 21 of the rail and the sealing layer on both sides of the rail towards the sealing layer.

And filling a first waterproof sealing material 35 in the waterproof filling groove, wherein the first waterproof sealing material 35 is a fluid or semi-fluid waterproof sealing material cured at normal temperature.

Here, for example, since the boundary between the foundation 21 and the inter-line closing layer 24 is the joint of the new and old concrete, a weak waterproof area is likely to occur, and thus, a waterproof filling groove is newly formed therein, so that water can be further prevented from penetrating into the foundation 20.

Illustratively, the waterproof filling groove may have a cutting depth of 30mm and a width of 15 mm. This size can cover the weak waterproof area caused by new and old concrete. Illustratively, before filling the first waterproof sealing material 35, the surface of the concrete in the waterproof filling tank is cleaned from dust, floating slurry and other impurities, so as to ensure that the waterproof sealing material and the wall of the waterproof filling tank are tightly combined. And brushing a special interface agent, wherein the thin layer of the brushing interface agent is uniform, so that the waterproof sealing material and the concrete material are effectively separated.

The first waterproof sealing material 35 may be, for example, a silicone sealant, which is injected slowly by a glue gun, and the injected silicone sealant should be continuously full and have no pores or voids inside, so that the best waterproof capability can be achieved. The silicone sealant is a paste prepared by mixing polydimethylsiloxane as a main raw material, a cross-linking agent, a filler, a plasticizer, a coupling agent and a catalyst in a vacuum state, and is cured to form the elastic silicone rubber by reacting with water in the air at room temperature. The silicone sealant has the characteristics of strong bonding force, high tensile strength, weather resistance, vibration resistance, moisture resistance, odor resistance and large adaptability to cold and heat changes.

According to an optional embodiment of the present invention, in step 102, the waterproof sealing treatment of the expansion joint 40 of the base 21 of the track includes:

removing the filler in the expansion joint 40;

at least two different waterproof sealing materials are sequentially filled in the expansion joint 40 from bottom to top, and a preset distance is reserved between the waterproof sealing material at the lowest part and the waterproof sealing material at the upper part.

Here, the filler (not shown in the drawings) in the expansion joint 40 is removed, for example, because the original filler in the expansion joint 40 loses the waterproof function, but the material is still in the expansion joint, so that the filler needs to be removed completely to be refilled with the waterproof sealing material.

Here, for example, since the waterproof sealing material in the expansion joint 40 needs to withstand the pressure or tension caused by thermal expansion and contraction, it is easy to accelerate aging, and the service life is reduced, so that the waterproof function is lost. Therefore, at least two different waterproof sealing materials are arranged, so that the waterproof effect is better, and the service life of the waterproof sealing material is prolonged.

Here, the purpose of spacing the lowermost waterproof sealing material a preset distance from the upper waterproof sealing material is, for example: the waterproof sealing material at the lowest part is provided with a water drainage function, so that even if water leaks to the waterproof sealing material at the lowest part, the waterproof sealing material can drain the water besides the waterproof capacity of the waterproof sealing material, and the failure of the waterproof capacity under the action of water pressure is avoided. The predetermined distance is a space for draining water, and may be set to be greater than 10 mm.

According to an optional embodiment of the present invention, the removing the filler in the expansion joint 40 includes:

drilling and penetrating from any end of two ends of the expansion joint 40 to the other end to remove the filler in the expansion joint 40, and forming a slope surface at the bottom of the expansion joint 40 after drilling for draining water to one end easily.

Namely, the original filler is removed more quickly and completely by a drilling method.

The slope surface is arranged to have the following functions: water penetrates into the expansion joint 40 and can be discharged from one end. For example, the gradient of the drainage slope may be 2%. Here, for example, since the base 21 of the rail extends longitudinally, and the expansion joint 40 extends transversely, two ends of the expansion joint 40 respectively correspond to two sides of the base 21 of the rail.

Here, the drilling is exemplarily a water mill drill hole having a diameter of 63mm and a depth of the drill hole being the width of the base 21.

According to an alternative embodiment of the present invention, as shown in fig. 4, the filling of at least two waterproof sealing materials into the expansion joint 40, and the distance between the waterproof sealing material at the lowest position and the waterproof sealing material at the upper position is a preset distance, includes:

removing impurities drilled in the expansion joint 40;

placing a second waterproof sealing material 41;

polishing the inner wall of the expansion joint above the second waterproof sealing material 41;

a partition plate 42 is placed in the expansion joint above the second waterproof sealing material 41;

filling a third waterproof sealing material 43 in the expansion joint above the isolation plate 42;

the second waterproof sealing material 41 is a solid waterproof sealing material, and the third waterproof sealing material 43 is a normal-temperature-cured fluid or semi-fluid waterproof sealing material.

Here, for example, the impurities drilled in the expansion joint 40 can be removed, so that the waterproof sealing material can be tightly bonded with the inner side wall of the expansion joint 40. The cleaning requirement is that the inner wall after drilling has no floating dust, foreign matters such as impurities and the like. Illustratively, the removal may be by sponge or wire.

Here, the purpose of grinding the inner wall of the expansion joint 40 above the second waterproof sealing material 41 is, for example: because the third waterproof sealing material 43 is a fluid or semi-fluid material which is solidified at normal temperature, the smooth inner wall of the expansion joint 40 is beneficial to the effective bonding between the solidified third waterproof sealing material 43 and the inner wall of the expansion joint 40, and has better waterproof capability. Here, the requirement for grinding is, for example, the need for new surfaces. Here, the third waterproof sealing material 43 may be silicone sealant, for example. For example, the third waterproof sealing material 43 may have a height of 50mm and a width equal to the width of the expansion joint 40. The depth of the sanding was also 50 mm.

Here, the isolation plate 42, for example, has two functions or features in addition to isolating two waterproof sealing materials: firstly, the device can adapt to expansion with heat and contraction with cold, and cannot be damaged or lose the isolation function due to expansion with heat and contraction with cold; secondly, fill expansion joint 40 in vertical mid portion, also play certain waterproof sealing effect, but the cost is lower, saves waterproof sealing material's use. Illustratively, the isolator plate 42 is a resiliently flexible plate. Illustratively, the height of the isolation plate 42 is 200mm, and the width is the same as the width of the expansion joint 40.

Here, the second waterproof sealing material 41 is a solid waterproof sealing material, for example, so that when the third waterproof sealing material 43 causes water to leak to the second waterproof sealing material 41 due to aging, the second waterproof sealing material 41 can not only prevent the water from continuing to leak downwards, but also can guide the water to be discharged to one end of the expansion joint 40, because the bottom of the expansion joint 40 is provided with a drainage slope, so that the second waterproof sealing material 41 is also installed in an inclined manner.

Here, for example, as shown in fig. 4, the second waterproof sealing material 41 is half of a rubber hose, i.e., half of a ring in cross section, so as to hold and drain the leaked water toward one end of the expansion joint 40. The water-stop rubber tube can expand when meeting water, and is in closer contact with the side wall of the expansion joint 40, so that water is prevented from leaking downwards. Also, the water-stopping rubber tube has a good hydrophobic property, for example, to guide water more easily toward one end to be discharged.

In order to match the semicircular bottom of the second waterproof sealing material 41, during drilling for removing the filler in the expansion joint 40, the semicircular groove below can be reserved to fit the semicircular shape of the second waterproof sealing material 41, so that the second waterproof sealing material 41 can bear the pressure of water without deformation, and the sealing performance is good.

According to an alternative embodiment of the invention, said placing of the second waterproof sealing material 41 comprises:

placing a second waterproof sealing material 41 in the expansion joint 40, wherein two ends of the second waterproof sealing material 41 respectively correspond to two sides of the base 21 of the track;

sealing plates (not shown in the drawings) are installed at positions corresponding to the second waterproof sealing material 41 on both sides of the base 21 of the rail, the sealing plates are fixed to both sides of the base 21 of the rail by bolts and nuts (not shown in the drawings), and the nuts are further provided with anti-loosening structures (not shown in the drawings).

Here, the sealing plate is used to prevent water from penetrating into the expansion joint 40 from the outside of the base 21, for example. Here, the nut is exemplarily provided with a loosening prevention structure for preventing the sealing plate from losing a sealing function due to loosening of the nut and the bolt caused by vibration.

Here, the sealing plate is exemplarily a 5mm galvanized steel plate, high in strength, and not easily corroded. Here, the bolt is a phi 14mm bar-planting bolt, which is convenient to fix in concrete. Here, the nut is provided with a locking structure, for example, a spring steel wire is arranged between the nut pressing surface and the sealing plate, similar to an elastic washer, but the spring steel wire has a larger elastic range and a good locking effect.

It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

In the description of the embodiments of the present invention, the term "connected" should be interpreted broadly unless otherwise indicated and limited. For example, the two elements may be electrically connected, or may be connected through an intermediate member, directly or indirectly. The specific meaning of the above terms can be understood by those of ordinary skill in the art as appropriate.

It should be understood that, in various embodiments of the present invention, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention. The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.

In the embodiments of the present invention, if the terms "first \ second \ third" are used, they are only used to distinguish similar objects, and do not represent a specific ordering for the objects. It is to be understood that the terms first, second, and third, where permissible, are interchangeable in particular order or sequences.

The individual features described in the embodiments can be combined in any suitable manner without departing from the scope, for example different embodiments and aspects can be formed by combining different features. In order to avoid unnecessary repetition, various possible combinations of the specific features of the invention will not be described further.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalents, improvements, etc. that are within the spirit and principle of the present invention should be included in the present invention.