1. A construction method of a waterproof structure at a joint of a prefabricated outer wall and a cast-in-place floor slab is characterized by comprising the following steps:

when a cast-in-place floor slab is constructed, a drainage pipeline is pre-buried at a position close to the outer side surface in the cast-in-place floor slab, a pipeline opening at one side of the drainage pipeline is arranged on the upper surface of the cast-in-place floor slab and close to the outer side surface of the cast-in-place floor slab, and a pipeline opening at the other side of the drainage pipeline is arranged on the outer side surface of the cast-in-place floor slab;

when a prefabricated outer wall is installed on the cast-in-place floor slab, arranging a first waterproof layer at the joint of the inner side surface of the prefabricated outer wall and the upper surface of the cast-in-place floor slab; and

and arranging a second waterproof layer at the joint of the outer side surface of the prefabricated outer wall and the outer side surface of the cast-in-place floor slab.

2. The method for constructing a waterproof structure at a joint between a prefabricated exterior wall and a cast-in-place floor slab as claimed in claim 1, wherein when the cast-in-place floor slab is constructed, a slope is formed by outwardly sloping an area of an upper surface of the cast-in-place floor slab corresponding to the prefabricated exterior wall.

3. The construction method of the waterproof structure at the joint of the prefabricated exterior wall and the cast-in-place floor slab as claimed in claim 1, wherein the bottom of the prefabricated exterior wall is provided with a butt-joint groove, and the butt-joint groove is arranged along the arrangement direction of the prefabricated exterior wall;

when the prefabricated outer wall is installed, slurry is poured into the butt joint grooves to achieve connection of the prefabricated outer wall and the cast-in-place floor slab.

4. The method for constructing a waterproof structure at a joint of a prefabricated exterior wall and a cast-in-place floor slab according to claim 1, wherein when the prefabricated exterior wall is installed, a blocking piece is arranged between the cast-in-place floor slab and the prefabricated exterior wall, a grouting space is formed between the cast-in-place floor slab and the prefabricated exterior wall by using the blocking piece, and slurry is poured into the grouting space to connect the prefabricated exterior wall and the cast-in-place floor slab.

5. The method for constructing a waterproof structure at a joint of a prefabricated exterior wall and a cast-in-place floor slab as claimed in claim 1, wherein when the drainage pipeline is embedded, a pipeline opening of the drainage pipeline, which is required to be formed on the upper surface of the cast-in-place floor slab, is blocked by using pervious concrete.

6. The utility model provides a waterproof construction of prefabricated outer wall and cast-in-place floor seam crossing which characterized in that includes:

the drainage pipeline is embedded in the cast-in-place floor slab and provided with two opposite pipeline ports, one pipeline port is arranged on the upper surface of the cast-in-place floor slab and close to the outer side surface of the cast-in-place floor slab, and the other pipeline port is arranged on the outer side surface of the cast-in-place floor slab;

the first waterproof layer is arranged at the joint of the inner side surface of the prefabricated outer wall and the upper surface of the cast-in-place floor slab; and

and the second waterproof layer is arranged at the joint of the outer side surface of the prefabricated outer wall and the outer side surface of the cast-in-place floor slab.

7. The waterproof structure at the joint of the prefabricated exterior wall and the cast-in-place floor slab as claimed in claim 6, wherein the upper surface of the cast-in-place floor slab is sloped outwardly to form a slope surface corresponding to the area of the prefabricated exterior wall.

8. The waterproof structure at the joint of the prefabricated outer wall and the cast-in-place floor slab as claimed in claim 6, wherein a butt-joint groove is formed in the bottom of the prefabricated outer wall, the butt-joint groove is formed along the arrangement direction of the prefabricated outer wall in a full-length mode, and slurry is poured into the butt-joint groove to achieve connection of the prefabricated outer wall and the cast-in-place floor slab.

9. The waterproof structure at the joint of the prefabricated exterior wall and the cast-in-place floor slab as claimed in claim 6, wherein a blocking piece is supported between the prefabricated exterior wall and the cast-in-place floor slab, a grouting space is formed between the cast-in-place floor slab and the prefabricated exterior wall through the blocking piece, and slurry is poured into the grouting space to connect the prefabricated exterior wall and the cast-in-place floor slab.

10. The waterproof structure at the joint of the prefabricated outer wall and the cast-in-place floor slab as claimed in claim 6, wherein the pipeline opening of the drainage pipeline, which is required to be arranged on the upper surface of the cast-in-place floor slab, is plugged with water-permeable concrete.

Background

In recent years, with the development of the building industry, more and more fabricated buildings are provided, prefabricated external wall panels are the most applied form in domestic fabricated buildings at present, the surface flatness of the prefabricated external wall panels is good, the overall precision is high, meanwhile, the heat preservation and the decoration layers of external windows and external facades of the buildings can be directly prefabricated in factories, and the prefabricated external wall panels are favored by a plurality of developers.

However, the prefabricated outer wall is assembled in blocks, so that the problem of waterproof treatment of connecting joints is inevitably encountered, the waterproof cloth is covered on the outer vertical surface corresponding to the joints in the existing waterproof treatment mode to realize water resistance, but the waterproof cloth is exposed and easily damaged, so that the waterproof performance of the joints is failed, and how to strengthen the waterproof performance of the joints is a problem worthy of research.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, provides a waterproof structure at the joint of a prefabricated outer wall and a cast-in-place floor slab and a construction method thereof, and solves the problem that the existing waterproof structure for blocking water by waterproof cloth is easy to damage so that the waterproof is ineffective.

The technical scheme for realizing the purpose is as follows:

the invention provides a construction method of a waterproof structure at a joint of a prefabricated outer wall and a cast-in-place floor slab, which comprises the following steps:

when a cast-in-place floor slab is constructed, a drainage pipeline is pre-buried at a position close to the outer side surface in the cast-in-place floor slab, a pipeline opening at one side of the drainage pipeline is arranged on the upper surface of the cast-in-place floor slab and close to the outer side surface of the cast-in-place floor slab, and a pipeline opening at the other side of the drainage pipeline is arranged on the outer side surface of the cast-in-place floor slab;

when a prefabricated outer wall is installed on the cast-in-place floor slab, arranging a first waterproof layer at the joint of the inner side surface of the prefabricated outer wall and the upper surface of the cast-in-place floor slab; and

and arranging a second waterproof layer at the joint of the outer side surface of the prefabricated outer wall and the outer side surface of the cast-in-place floor slab.

According to the waterproof structure, the drainage pipeline is embedded in the cast-in-place floor slab, the pipeline opening of the drainage pipeline, which is positioned on the upper surface of the cast-in-place floor slab, is correspondingly arranged at the joint of the cast-in-place floor slab and the prefabricated outer wall, and the pipeline opening is arranged close to the outer side surface of the cast-in-place floor slab, so that if rainwater permeates into the joint, the permeated rainwater can flow into the drainage pipeline and then is discharged to the outer side surface of the cast-in-place floor slab. In addition, the waterproof structure is provided with the first waterproof layer and the second waterproof layer at the joint of the cast-in-place floor slab and the prefabricated outer wall, so that the indoor side and the outdoor side are waterproof, the outdoor rainwater can be effectively prevented from permeating into the room from the joint, and the waterproof performance is improved.

The construction method of the waterproof structure at the joint of the prefabricated outer wall and the cast-in-place floor slab is further improved in that when the cast-in-place floor slab is constructed, the region, corresponding to the prefabricated outer wall, of the upper surface of the cast-in-place floor slab is outward sloped so as to form a slope surface.

The construction method of the waterproof structure at the joint of the prefabricated outer wall and the cast-in-place floor slab is further improved in that the bottom of the prefabricated outer wall is provided with a butt joint groove which is arranged along the arrangement direction of the prefabricated outer wall in a full-length mode;

when the prefabricated outer wall is installed, slurry is poured into the butt joint grooves to achieve connection of the prefabricated outer wall and the cast-in-place floor slab.

The construction method of the waterproof structure at the joint of the prefabricated outer wall and the cast-in-place floor slab is further improved in that when the prefabricated outer wall is installed, a plugging piece is arranged between the cast-in-place floor slab and the prefabricated outer wall, a grouting space is formed between the cast-in-place floor slab and the prefabricated outer wall by using the plugging piece, and slurry is poured into the grouting space to connect the prefabricated outer wall and the cast-in-place floor slab.

The construction method of the waterproof structure at the joint of the prefabricated outer wall and the cast-in-place floor slab is further improved in that when the drainage pipeline is embedded, the pipeline opening on the upper surface of the cast-in-place floor slab, which is needed to be arranged on the drainage pipeline, is sealed by using pervious concrete.

The invention also provides a waterproof structure at the joint of the prefabricated outer wall and the cast-in-place floor slab, which comprises the following components:

the drainage pipeline is embedded in the cast-in-place floor slab and provided with two opposite pipeline ports, one pipeline port is arranged on the upper surface of the cast-in-place floor slab and close to the outer side surface of the cast-in-place floor slab, and the other pipeline port is arranged on the outer side surface of the cast-in-place floor slab;

the first waterproof layer is arranged at the joint of the inner side surface of the prefabricated outer wall and the upper surface of the cast-in-place floor slab; and

and the second waterproof layer is arranged at the joint of the outer side surface of the prefabricated outer wall and the outer side surface of the cast-in-place floor slab.

The waterproof structure at the joint of the prefabricated outer wall and the cast-in-place floor slab is further improved in that the upper surface of the cast-in-place floor slab is outward sloped corresponding to the area of the prefabricated outer wall so as to form a slope surface.

The waterproof structure at the joint of the prefabricated outer wall and the cast-in-place floor slab is further improved in that a butt joint groove is formed in the bottom of the prefabricated outer wall, the butt joint groove is arranged along the arrangement direction of the prefabricated outer wall in a full-length mode, and slurry is poured into the butt joint groove to achieve connection of the prefabricated outer wall and the cast-in-place floor slab.

The waterproof structure at the joint of the prefabricated outer wall and the cast-in-place floor is further improved in that a plugging piece is erected between the prefabricated outer wall and the cast-in-place floor, a grouting space is formed between the cast-in-place floor and the prefabricated outer wall through the plugging piece, and slurry is poured into the grouting space to connect the prefabricated outer wall and the cast-in-place floor.

The waterproof structure at the joint of the prefabricated outer wall and the cast-in-place floor is further improved in that the pipeline opening on the drainage pipeline, which is required to be arranged on the upper surface of the cast-in-place floor, is plugged with permeable concrete.

Drawings

FIG. 1 is a schematic view of a waterproof structure at a joint of a prefabricated exterior wall and a cast-in-place floor slab.

FIG. 2 is a flow chart of a construction method of a waterproof structure at a joint of a prefabricated outer wall and a cast-in-place floor slab.

Detailed Description

The invention is further described with reference to the following figures and specific examples.

Referring to fig. 1, the invention provides a waterproof structure at a joint of a prefabricated outer wall and a cast-in-place floor slab and a construction method thereof, which are used for realizing the waterproofing of the root of the prefabricated outer wall and the joint of the cast-in-place floor slab, wherein a second waterproof layer is arranged outside the joint to realize the first waterproof treatment, a drainage pipeline is arranged close to the second waterproof layer to realize the second waterproof treatment, a waterproof structure is formed at the joint by grouting to realize the third waterproof treatment, and a first waterproof layer is arranged inside the joint to realize the fourth waterproof treatment. The waterproof structure at the joint of the prefabricated outer wall and the cast-in-place floor slab and the construction method thereof are explained below with reference to the accompanying drawings.

Referring to fig. 1, a schematic diagram of a waterproof structure at a joint of a prefabricated exterior wall and a cast-in-place floor slab is shown. The waterproof structure at the joint of the prefabricated exterior wall and the cast-in-place floor slab of the invention is described below with reference to fig. 1.

As shown in fig. 1, the waterproof structure at the joint between the prefabricated exterior wall and the cast-in-place floor slab of the present invention includes a drainage pipe 21, a first waterproof layer 22 and a second waterproof layer 23, the drainage pipe 21 is embedded in the cast-in-place floor slab 11, the drainage pipe 21 has two opposite pipe openings, one of the pipe openings is arranged on the upper surface 111 of the cast-in-place floor slab 11 and is close to the outer side surface 112 of the cast-in-place floor slab 11, and the other pipe opening is arranged on the outer side surface 112 of the cast-in-place floor slab 11, so that after the prefabricated exterior wall 12 is installed on the cast-in-place floor slab 11, the pipe opening on the upper surface 111 of the cast-in-place floor slab 11 is arranged at the joint between the prefabricated exterior wall 12 and the cast-in-place floor slab 11, and water at the joint can be drained to the outside. The first waterproof layer 22 is arranged at the joint of the inner side surface 122 of the prefabricated outer wall 12 and the upper surface 111 of the cast-in-place floor 11, the joint of the prefabricated outer wall 12 and the cast-in-place floor 11 is sealed by the first waterproof layer 22, the first waterproof layer 22 is arranged on the indoor side, the possibility of damage to the first waterproof layer is low, and a waterproof effect can be well played. The second waterproof layer 23 is arranged at the joint of the outer side surface 123 of the prefabricated outer wall 12 and the outer side surface 112 of the cast-in-place floor 11, and the second waterproof layer 23 blocks the joint of the prefabricated outer wall 12 and the cast-in-place floor 11 from the outside, so that the outdoor waterproof effect is achieved.

In an embodiment of the present invention, the upper surface 111 of the cast-in-place floor 11 is sloped outwardly to form a sloped surface 1111 corresponding to an area of the prefabricated exterior wall 12. The elevation of the slope 111 on the side close to the inner side 122 of the prefabricated outer wall 12 is higher than that on the side close to the outer side 123 of the prefabricated outer wall 12, so that the water seeping from the joint can flow back to the outside through the slope 1111 and is not easy to enter the room.

Preferably, the pipe opening of the drain pipe 21 on the upper surface 111 of the cast-in-place floor 11 is located at a position where the elevation of the slope 1111 is low, so that the infiltration water flowing back to the outside along the slope 1111 can flow into the drain pipe 21.

In an embodiment of the present invention, the drainage pipe 21 is provided with a pipe opening that is located on the upper surface 111 of the cast-in-place floor 11 and is sealed with water-permeable concrete. The pervious concrete is arranged, so that when the prefabricated outer wall 12 is installed, slurry adopted by wet connection cannot enter the drainage pipeline 21 to block the drainage pipeline 21, and the pervious concrete has water permeability, so that water permeating into the joint can flow into the drainage pipeline 21.

In an embodiment of the present invention, the installation direction of the drainage pipeline 21 is the same as the installation direction of the prefabricated outer wall 12, and the length of the drainage pipeline 21 is the same as the length of the prefabricated outer wall 12, the drainage pipeline 21 includes a vertical section and an inclined section connected to the vertical section, the pipeline opening at the end of the vertical section is located on the slope surface 1111, and the pipeline opening at the end of the inclined section is located on the outer side surface 112.

In a specific embodiment of the present invention, the bottom of the prefabricated exterior wall 12 is provided with a butt-joint groove, the butt-joint groove is arranged along the arrangement direction of the prefabricated exterior wall 12, and slurry is poured into the butt-joint groove to realize the connection between the prefabricated exterior wall 12 and the cast-in-place floor 11.

Preferably, when the prefabricated exterior wall 12 is installed, the prefabricated exterior wall 12 is placed on the cast-in-place floor 11, the outer side surface 123 of the prefabricated exterior wall 12 is flush with the outer side surface 112 of the cast-in-place floor 11, the butt-joint groove at the bottom of the prefabricated exterior wall 12 is buckled on the cast-in-place floor 11, slurry is poured into the butt-joint groove through the grouting pipe 121 pre-embedded in the prefabricated exterior wall 12, the butt-joint groove is filled with the poured slurry, and the connection between the prefabricated exterior wall 12 and the cast-in-place floor 11 is realized after the slurry is solidified. Furthermore, in order to improve the connection strength between the cast-in-place floor 11 and the prefabricated outer wall 12, a connection anchor bar is arranged at the cast-in-place floor 11, the connection anchor bar is inserted into the grouting pipe 121, and the connection anchor bar is anchored through the grout in the grouting pipe 121. When the lower part of the cast-in-place floor slab 11 is provided with another prefabricated outer wall 12, the connecting anchor bars are steel bars in the other prefabricated outer wall 12.

Still further, form waterproof construction after to the butt joint inslot grout, this waterproof construction is located and can be played waterproof effect to seam department. Preferably, the grouting slurry is cement mortar.

In a specific embodiment of the present invention, when the prefabricated exterior wall 12 is installed, a gap is left between the bottom of the prefabricated exterior wall 12 and the upper surface 111 of the cast-in-place floor 11, and a blocking member 25 is supported between the prefabricated exterior wall 12 and the cast-in-place floor 11, the blocking member 25 has two channels, the two channels are arranged corresponding to the inner side surface 122 and the outer side surface 123 of the prefabricated exterior wall 12, a grouting space is formed between the cast-in-place floor 11 and the prefabricated exterior wall 12 by using the arranged blocking member 25, and slurry is poured into the grouting space to connect the prefabricated exterior wall 12 and the cast-in-place floor 11.

Preferably, the slurry is solidified to form a waterproof structure 24 that provides water resistance to the seam. Preferably, cement mortar is used as the slurry.

Further, the bottom of prefabricated outer wall 12 is equipped with the recessed bar groove that makes progress, and the bar groove sets up along the direction that sets up of prefabricated outer wall 12, and with the length looks adaptation of prefabricated outer wall 12, this bar groove and grout space intercommunication to thereby when pouring into the thick liquids in the grout space thick liquids can get into the bar inslot and form waterproof sand grip 26 in the bar inslot, this waterproof sand grip 26 and waterproof construction 24 structure as an organic whole, play the effect of blocking the infiltration route.

Still further, the plugging member 25 is formed by pouring high-strength plugging material.

In order to improve the connection strength between the cast-in-place floor 11 and the prefabricated outer wall 12, a connection anchor bar is arranged at the cast-in-place floor 11, the connection anchor bar is inserted into the grouting pipe 121, and the connection anchor bar is anchored through grout in the grouting pipe 121. When the lower part of the cast-in-place floor slab 11 is provided with another prefabricated outer wall 12, the connecting anchor bars are steel bars in the other prefabricated outer wall 12.

In an embodiment of the present invention, the first waterproof layer 22 is made of a waterproof roll material, the waterproof roll material is adhered to the joint between the cast-in-place floor 11 and the prefabricated exterior wall 12, and the waterproof roll material is L-shaped, and is partially disposed on the upper surface 111 of the cast-in-place floor 11 and partially disposed on the inner side surface 122 of the prefabricated exterior wall 12.

The second waterproof layer 23 is made of waterproof cloth, which is attached to the outer side surface 112 of the cast-in-place floor slab 11 and the outer side surface 123 of the prefabricated outer wall 12, and the waterproof cloth shields the joint between the cast-in-place floor slab 11 and the prefabricated outer wall 12.

The invention also provides a construction method of the waterproof structure at the joint of the prefabricated outer wall and the cast-in-place floor slab, and the construction method is explained below.

As shown in fig. 2, the construction method of the waterproof structure at the joint of the prefabricated exterior wall and the cast-in-place floor slab of the invention comprises the following steps:

step S101 is executed, when the cast-in-place floor slab is constructed, a drainage pipeline is pre-buried at a position close to the outer side face in the cast-in-place floor slab, a pipeline opening at one side of the drainage pipeline is arranged on the upper surface of the cast-in-place floor slab and close to the outer side face of the cast-in-place floor slab, and a pipeline opening at the other side of the drainage pipeline is arranged on the outer side face of the cast-in-place floor slab; then, step S102 is executed;

step S102 is executed, when the prefabricated outer wall is installed on the cast-in-place floor slab, a first waterproof layer is arranged at the joint of the inner side surface of the prefabricated outer wall and the upper surface of the cast-in-place floor slab; then, step S103 is executed;

and S103, arranging a second waterproof layer at the joint of the outer side surface of the prefabricated outer wall and the outer side surface of the cast-in-place floor slab.

In an embodiment of the present invention, as shown in fig. 1, when the cast-in-place floor 11 is constructed, an area of the upper surface 111 of the cast-in-place floor 11 corresponding to the prefabricated exterior wall 12 is sloped outward to form a slope 1111. The slope 1111 allows the water that has permeated into the water to flow back by gravity and to be discharged through the drain pipe 21.

In an embodiment of the present invention, when the drainage pipeline 21 is pre-buried, the pipeline opening of the drainage pipeline 21, which is required to be disposed on the upper surface 111 of the cast-in-place floor 11, is sealed by using the pervious concrete. The pervious concrete is arranged, so that when the prefabricated outer wall 12 is installed, slurry adopted by wet connection cannot enter the drainage pipeline 21 to block the drainage pipeline 21, and the pervious concrete has water permeability, so that water permeating into the joint can flow into the drainage pipeline 21.

In a specific embodiment of the invention, the bottom of the prefabricated outer wall is provided with a butt joint groove which is arranged along the arrangement direction of the prefabricated outer wall;

when the prefabricated outer wall is installed, slurry is poured into the butt joint grooves to achieve connection of the prefabricated outer wall and the cast-in-place floor slab. The poured slurry is solidified to form a waterproof structure, so that the waterproof effect is achieved.

In a specific embodiment of the present invention, when installing the prefabricated exterior wall 12, a blocking member 25 is disposed between the cast-in-place floor 11 and the prefabricated exterior wall 12, a grouting space is formed between the cast-in-place floor 11 and the prefabricated exterior wall 12 by using the blocking member 25, and slurry is poured into the grouting space to connect the prefabricated exterior wall 12 and the cast-in-place floor 11.

Preferably, the slurry is solidified to form a waterproof structure 24 that provides water resistance to the seam. Preferably, cement mortar is used as the slurry.

Further, the bottom of prefabricated outer wall 12 is equipped with the recessed bar groove that makes progress, and the bar groove sets up along the direction that sets up of prefabricated outer wall 12, and with the length looks adaptation of prefabricated outer wall 12, this bar groove and grout space intercommunication to thereby when pouring into the thick liquids in the grout space thick liquids can get into the bar inslot and form waterproof sand grip 26 in the bar inslot, this waterproof sand grip 26 and waterproof construction 24 structure as an organic whole, play the effect of blocking the infiltration route.

According to the invention, a plurality of waterproof structures are arranged at the joint of the prefabricated outer wall and the cast-in-place floor slab, and the external waterproof cloth forms the first waterproof layer to prevent external rainwater from entering the joint; a drainage pipeline is arranged near the outer side surface to form a second waterproof layer, so that water entering the joint can be drained from the drainage pipeline; grouting at the joint to form a waterproof structure to form a third waterproof structure, wherein the bottom surface of the waterproof structure is an inclined surface, the top surface of the waterproof structure is provided with a waterproof raised line which can block a water seepage path, and the inclined surface also plays a role in refluxing the permeated water and can effectively discharge the water permeated into the joint; the waterproof coiled material inside forms the last waterproof layer, and can prevent water from permeating into a room.

The waterproof structure of the invention adopts waterproof cloth and waterproof coiled material for plugging, and is also provided with a drainage pipeline for waterproofing, and a plurality of waterproofing ensures the waterproofing performance of the joint.

The waterproof structure greatly enhances the waterproof performance of the joint, avoids the reworking maintenance of water leakage, saves the cost of the reworking maintenance of the water leakage, and provides great economic benefits for projects.

The waterproof structure greatly enhances the waterproof performance of the joint of the assembly type structure, avoids the later stage water leakage problem, improves the project construction quality, improves the satisfaction degree of owners, and enhances the enterprise brand construction. Provides powerful competitiveness for the competition of later-stage similar items.

While the present invention has been described in detail and with reference to the embodiments thereof as illustrated in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.