1. The utility model provides a wear shallow auxiliary structure who buries bias voltage massif under tunnel, including the tunnel wear shallow auxiliary structure who buries the bias voltage massif, including slide resistant pile (1) that the line direction interval set up along the tunnel both sides, lie in the tunnel and adopt longeron (2) longitudinal connection with slide resistant pile (1) top of one side, lie in relative slide resistant pile (1) top of tunnel both sides and adopt crossbeam (3) transverse connection, the tunnel top is equipped with fender arch structure (11) along the circuit, it makes slide resistant pile (1) connect to form a whole to protect arch structure (11) and the waist of each slide resistant pile (1) to be connected.

2. The auxiliary structure of the tunnel underpass shallow buried bias mountain as claimed in claim 1, wherein said cross beam (3) can be braced with reinforced concrete of 1.0m wide by 1.2m high, one for every 5m along the line direction.

3. The tunnel of claim 1 auxiliary structure who wears shallow biasing mountain body of burying, its characterized in that, the waist of friction pile (1) is equipped with pre-buried steel sheet (7), pre-buried steel sheet (7) are the arc and with friction pile (1) coaxial arrangement, pre-buried steel sheet (7) external fixation has cantilever steel sheet (8) that are used for the stake to connect, lies in the tunnel and supports jointly on cantilever steel sheet (8) with one side and be connected with connecting steel sheet (5) between the stake, connecting steel sheet (5) between the stake set up and are connected with main muscle (10) in the fender arch structure (11) along the line.

4. The auxiliary structure of the tunnel underpass shallow buried biasing mountain of claim 3, characterized in that the main reinforcement (10) also has connection points with the inter-pile connecting steel plates (5) at the intervals of the anti-slide piles (1) where the adjacent cross beams (3) are located.

5. The auxiliary structure of the tunnel underpass shallow buried bias mountain body as claimed in claim 3, wherein the pre-buried steel plate (7) is semi-arc shaped; rib plate steel plates (6) used for supporting the cantilever steel plates (8) are fixedly arranged on the outer sides of the embedded steel plates (7), and the rib plate steel plates (6) are distributed at intervals in an arc shape and are arranged coaxially with the anti-slide piles (1); the inter-pile connecting steel plates (5) are at least arranged twice on one side of a circuit, at least two cantilever steel plates (8) used for supporting the inter-pile connecting steel plates (5) are correspondingly arranged on each embedded steel plate (7), and at least two rows of rib plate steel plates (6) used for supporting the cantilever steel plates (8) on each embedded steel plate (7) are correspondingly arranged; the embedded steel plates (7), the ribbed plate steel plates (6), the cantilever steel plates (8), the inter-pile connecting steel plates (5) and the main ribs (10) are connected in a welding mode, and the embedded steel plates, the anti-slide piles (1) and the arch protection structure (11) are poured into an integral structure.

6. The auxiliary structure of the tunnel lower-penetrating shallow-buried bias mountain body as claimed in claim 5, wherein the embedded steel plate (7) is embedded into the anti-slide pile (1) by 20mm, the thickness of the embedded steel plate (7) is 20mm, the cantilever steel plate (8) and the embedded steel plate (7) are welded at a T-shaped angle, the inter-pile connecting steel plate (5) and the cantilever steel plate (8) are in lap joint on two sides or three sides, the double-spliced I-shaped steel (4) and the cantilever steel plate (8) are in lap joint on two sides, and the main rib (10) and the inter-pile connecting steel plate (5) are in full-length lap joint on two sides.

7. The auxiliary structure of the tunnel underpass shallow buried bias mountain body as claimed in claim 3, wherein the cantilever steel plates (8) on the same side of the tunnel are also jointly supported and connected with double-spliced I-shaped steel (4), and the double-spliced I-shaped steel (4) is positioned on one side of the inter-pile connecting steel plate (5) close to the embedded steel plate (7); the double-spliced I-shaped steel (4) is provided with a hollow cavity, and cement mortar is filled in the hollow cavity; the double-spliced I-shaped steel (4) is provided with at least one channel; the double-spliced I-shaped steel (4) is double-spliced I-shaped steel I25 b.

8. The auxiliary structure of the tunnel underpass shallow buried bias mountain body as claimed in claim 3, wherein anchor bars (9) facing the center of the arc are uniformly distributed on the pre-buried steel plate (7).

9. The auxiliary structure of the tunnel underpass shallow buried bias mountain as claimed in claim 8, wherein the anchor bars (9) are 350mm deep into the anti-skid piles (1), the vertical spacing is 300mm, and the circumferential spacing is determined by the longitudinal main bar spacing of the piles.

10. The auxiliary structure of the tunnel underpass shallow buried bias mountain according to claim 1, characterized in that a cement mortar filling layer (13) is further arranged between the slide-resistant piles (1) on each side and the tunnel below the arch protection structure (11).

Background

The railway tunnel construction is often influenced by geological conditions, stratum environments and ground environments, when a line penetrates through a shallow buried bias mountain, the mountain landslide is easily caused by disturbance generated by the tunnel construction, and therefore auxiliary measures have to be considered during the tunnel construction to reduce the disturbance to the landslide and ensure the tunnel structure construction and operation safety.

In the past, the bias mountain is reinforced by adopting a mode of matching graded anchoring piles with anchor cables, but the mode of graded reinforcement can generate multiple disturbances on the bias mountain, so that the stability of a landslide body is not facilitated, the graded anchoring construction process is complex, and the increase of engineering investment is high. Therefore, a new auxiliary structure for tunnel underpass biased mountains is needed to overcome the problems of stability and construction difficulty.

Disclosure of Invention

The invention provides an auxiliary structure for a tunnel to penetrate through a shallow buried bias mountain, in particular to a non-disturbance sloping high pile longitudinal beam and pile waist arch protection structure for assisting the tunnel to penetrate through the shallow buried bias mountain, which can replace the traditional graded anchoring pile, reduce the disturbance of a landslide body, improve the safety of the tunnel, optimize the construction process and reduce the construction cost.

The invention provides the following technical scheme:

wear shallow auxiliary structure who buries bias voltage massif under tunnel, wear shallow auxiliary structure who buries the bias voltage massif under the tunnel including the tunnel, including the friction pile that the lane direction interval set up along the tunnel both sides, lie in the tunnel and adopt longeron longitudinal connection with the friction pile top of one side, lie in the relative friction pile top of tunnel both sides and adopt crossbeam transverse connection, the tunnel top is equipped with the fender arch structure along the circuit, the waist of fender arch structure and each friction pile is connected and is made the friction pile connect and form a whole.

The cross beams can be supported by reinforced concrete pairs of 1.0m multiplied by 1.2m (width multiplied by height), and the number of the cross beams is one per 5m along the line direction.

The waist of friction pile is equipped with pre-buried steel sheet, pre-buried steel sheet be the arc and with the coaxial setting of friction pile, pre-buried steel sheet external fixation has the cantilever steel sheet that is used for connecting between the stake, lies in the tunnel and supports jointly on the cantilever steel sheet with one side and be connected with connecting steel sheet between the stake, connecting steel sheet between the stake along the circuit setting and with protect the main muscle in the arch structure and be connected.

Furthermore, at the intervals of the anti-slide piles where the adjacent cross beams are located, the main reinforcements are also provided with connecting points connected with the connecting steel plates between the piles.

Further, the embedded steel plate is in a semi-arc shape; rib plate steel plates for supporting the cantilever steel plates are fixedly arranged on the outer sides of the embedded steel plates, are distributed at intervals in an arc shape and are arranged coaxially with the anti-slide piles; the inter-pile connecting steel plates are at least provided with two channels on one side of a circuit, the cantilever steel plates for supporting the inter-pile connecting steel plates are also at least correspondingly provided with two channels on each embedded steel plate, and the ribbed plate steel plates for supporting the cantilever steel plates on each embedded steel plate are also at least correspondingly provided with two rows; the embedded steel plates, the rib plate steel plates, the cantilever steel plates, the inter-pile connecting steel plates and the main ribs are connected in a welding mode and are poured into an integral structure with the anti-slide piles and the arch protection structure.

Furthermore, the embedded steel plate is embedded into the anti-slide pile by 20mm, the embedded steel plate is 20mm thick, the cantilever steel plate and the embedded steel plate are welded at a T-shaped angle, the inter-pile connecting steel plate and the cantilever steel plate are in double-face or three-face lap joint welding, the double-spliced I-shaped steel and the cantilever steel plate are in lap joint welding, and the main rib and the inter-pile connecting steel plate are in full-length lap joint and double-face welding.

Furthermore, the cantilever steel plates positioned on the same side of the tunnel are also jointly supported and connected with double-spliced I-shaped steel, and the double-spliced I-shaped steel is positioned on one side, close to the embedded steel plate, of the inter-pile connecting steel plate; the double-spliced I-shaped steel is provided with a hollow cavity, and cement mortar is filled in the hollow cavity; the double-spliced I-shaped steel is provided with at least one channel; the double-spliced I-shaped steel is I25 b.

Furthermore, anchor bars facing the arc circle center are uniformly distributed on the embedded steel plate. Preferably, the anchor bars are 350mm deep into the anti-slide pile, the vertical intervals are arranged according to 300mm, and the circumferential intervals are determined by the intervals of the longitudinal main bars of the pile.

And a cement mortar filling layer is also arranged between the anti-slide pile on each side and the tunnel below the arch protection structure.

Compared with the prior art, the invention has the advantages and positive effects that: can assist tunnel to wear shallow bias voltage massif of burying down, have high stake longitudinal and transverse beam of undisturbed and stake waist and protect the arch structure, this structure sets up interval friction pile in tunnel both sides, connects into whole through longitudinal and transverse beam and fender arch structure, separates tunnel structure and landslide massif. The auxiliary structure has the advantages that the auxiliary structure can reduce disturbance of the tunnel construction, bias mountain bodies and stable landslide bodies, the tunnel construction and operation safety and other effects are guaranteed to be remarkable, meanwhile, the construction is convenient, the cost is reasonable, and the application prospect is wide.

Drawings

FIG. 1 is a schematic plan view of an embodiment of the present invention;

FIG. 2 is a schematic view of the arch cross-sectional arrangement of the present invention;

FIG. 3 is a cross-sectional view of the connection structure of the arch support structure and the waist of the slide-resistant pile according to the present invention;

FIG. 4 is a schematic plan view of the connection structure of the arch support structure and the waist of the slide-resistant pile according to the present invention;

FIG. 5 is a detail and large illustration of the arch support structure and the waist of the slide-resistant pile according to the present invention; the embedded steel plate horizontal view direction schematic diagram comprises (a) an embedded steel plate cross-section structure schematic diagram, (b) an embedded steel plate horizontal view direction schematic diagram, (c) a plane schematic diagram of an inter-pile connecting steel plate and a cantilever steel plate on the embedded steel plate, and (d) a horizontal view direction schematic diagram of the inter-pile connecting steel plate and the cantilever steel plate on the embedded steel plate.

Wherein: the method comprises the following steps of 1-anti-slide piles, 2-longitudinal beams, 3-cross beams, 4-double-spliced I-shaped steel, 5-inter-pile connecting steel plates, 6-rib plate steel plates, 7-embedded steel plates, 8-cantilever steel plates, 9-anchor bars, 10-main bars, 11-arch protection structures, 12-IV type Larsen steel plate piles and 13-cement mortar filling layers.

Detailed Description

The technical scheme of the invention is further explained by combining the attached drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

As shown in the figures 1-2, the auxiliary structure of the tunnel underpass shallow buried bias mountain of the invention comprises anti-slide piles 1 which are arranged at intervals along the direction of a tunnel at two sides, the tops of the anti-slide piles 1 which are positioned at the same side of the tunnel are longitudinally connected by adopting longitudinal beams 2, the tops of the opposite anti-slide piles 1 which are positioned at two sides of the tunnel are transversely connected by adopting cross beams 3, an arch protection structure 11 is arranged along the line above the tunnel, and the arch protection structure 11 is connected with the waist of each anti-slide pile 1 to ensure that the anti-slide piles 1 are connected into a whole.

In general, the anti-slide piles 1 opposite to each other on two sides of the tunnel are grouped into two, and the cross beam 3 is arranged between the two anti-slide piles 1 in one group, as shown in fig. 1; the cross beams 3 can also be arranged between every two groups, three groups and the like of the anti-slide piles, for example, one cross beam 3 is erected between every two groups of four anti-slide piles 1 and is distributed at intervals along the line direction.

The anti-slide piles 1 on two sides of the structural tunnel are convenient to construct, can provide effective support strength, and have small disturbance to a mountain body in the construction process, a stable support connecting body is formed above the anti-slide piles through the cross beams 3 and the longitudinal beams 2, meanwhile, the whole anti-slide piles are integrally connected from the waist by adopting the arch protection structure 11, the whole anti-slide piles share the disturbance generated in the tunnel construction and operation, the influence on the landslide surface of the biased mountain body in the tunnel construction and operation period can be weakened, and the aims of stabilizing the landslide body and protecting the tunnel safety are fulfilled.

As a specific implementation example, the cross beam 3 may be a reinforced concrete counter-support of 1.0 × 1.2m (width × height), one for every 5m along the line direction.

As shown in fig. 3-4, the waist of slide-resistant pile 1 is equipped with pre-buried steel sheet 7, pre-buried steel sheet 7 is the arc and sets up with slide-resistant pile 1 is coaxial, pre-buried steel sheet 7 external fixation has the cantilever steel sheet 8 that is used for the connection between the stake, lies in the tunnel and supports jointly on the cantilever steel sheet 8 with one side and be connected with connecting steel sheet 5 between the stake, and connecting steel sheet 5 sets up and is connected with main muscle 10 in the arch protection structure 11 along the route between the stake. The embedded steel plate 7 is fixed in the slide-resistant pile 1 to provide stable supporting force, the cantilever steel plate 8 is fixed on the embedded steel plate 7 and is used for providing a connection point and an effective supporting platform for the continuous structure connected between the inter-pile connecting steel plate 5 and other piles, and the inter-pile connecting steel plate 5 extends in the same direction of the arch protection structure 11 and can form a stable connection point with the arch protection structure 11.

Further, the main reinforcement 10 also has connection points to the inter-pile connection steel plates 5 at intervals of the slide piles 1 where the adjacent cross beams 3 are located.

Further, the embedded steel plate 7 is in a semi-arc shape (fig. 4 and 5 a); rib plate steel plates 6 (figures 4 and 5) for supporting cantilever steel plates 8 are fixedly arranged on the outer sides of the embedded steel plates 7, and the rib plate steel plates 6 are distributed at intervals in an arc shape and are arranged coaxially with the slide-resistant piles 1; at least two inter-pile connecting steel plates 5 are arranged on one side of a circuit, at least two cantilever steel plates 8 for supporting the inter-pile connecting steel plates 5 are correspondingly arranged on each embedded steel plate 7, and at least two rows of ribbed plate steel plates 6 for supporting the cantilever steel plates 8 on each embedded steel plate 7 are correspondingly arranged; the pre-buried steel plates 7, the rib plate steel plates 6, the cantilever steel plates 8, the inter-pile connecting steel plates 5 and the main ribs 10 can be connected in a welding mode and are poured into an integral structure with the slide-resistant piles 1 and the arch protection structures 11, and the stable connection relation between the slide-resistant piles 1 and the arch protection structures 11 is formed jointly.

Further, as a specific implementation example, the embedded steel plate 7 is embedded into the anti-slide pile 1 by 20mm, the embedded steel plate 7 is 20mm thick, the cantilever steel plate 8 and the embedded steel plate 7 are welded at a T-shaped angle, the inter-pile connecting steel plate 5 and the cantilever steel plate 8 are welded in a double-face or three-face lap joint manner, the double-spliced i-shaped steel 4 and the cantilever steel plate 8 are welded in a lap joint manner, and the main rib 10 and the inter-pile connecting steel plate 5 are welded in a full-length lap joint manner in a double-face manner.

Further, the cantilever steel plates 8 positioned on the same side of the tunnel are also jointly supported and connected with double-spliced I-shaped steel 4 (fig. 3), and the double-spliced I-shaped steel 4 is positioned on one side, close to the embedded steel plate 7, of the inter-pile connecting steel plate 5 and can further provide a resisting force for the inter-pile connecting steel plate 5; the double-spliced I-shaped steel 4 is provided with a hollow cavity, cement mortar is filled in the hollow cavity, the supporting capacity can be further improved in the poured integrated structure, and the steel structure is prevented from being distorted and deformed; the double-spliced I-shaped steel 4 is provided with at least one channel; the double-spliced I-shaped steel 4 is double-spliced I-shaped steel I25 b.

Further, anchor bars 9 (fig. 3 and 4) facing the arc circle center are uniformly distributed on the embedded steel plate 7, so that the stability of the embedded steel plate 7 in the slide-resistant pile 1 can be improved. Preferably, the length of the anchor bars 9 penetrating into the anti-slide pile 1 is 350mm, the vertical intervals are arranged according to 300mm, the circumferential intervals are determined by the intervals of the longitudinal main bars of the pile, for example, the circumferential anchor bars are arranged according to the principle that two bundles of the longitudinal main bars of the pile are arranged at intervals.

And a cement mortar filling layer 13 is further arranged between the anti-slide pile 1 on each side and the tunnel below the arch protection structure 11 and is used for further filling and stabilizing the tunnel structure.

Before construction, firstly, constructing an IV-type Larsen steel sheet pile 12 as a temporary enclosure before tunnel construction along the line direction, then constructing the slide-resistant pile 1, constructing an embedded steel plate 7 in the slide-resistant pile 1, constructing the steel bar of the arch protection structure 11 and the connecting structure between the steel bar and the embedded steel plate 7, comprising a ribbed plate steel plate 6, a cantilever steel plate 8, an inter-pile connecting steel plate 5 and the like, casting the arch protection structure 11 along a line, constructing the top longitudinal beam 2 and the cross beam 3 of the slide-resistant pile, completing the integral construction of the structure, the safety and stability of the construction of the tunnel below can be weakened, after the construction of the tunnel is completed, the IV-type Larsen steel sheet pile 12 is pulled out, the stability of the residual structure in the operation period of the tunnel is continuously maintained, before the IV-type Larsen steel sheet pile 12 is pulled out, the gap between the IV-type Larsen steel sheet pile 12 and the slide-resistant pile 1 can be backfilled by soil and stones, and a backfilling line extends to the side wall position of the end head of the arch protection structure (figure 4). The structure of the invention integrates the anti-slide pile, the longitudinal and transverse beams and the arch protection structure, isolates the tunnel structure from the bias mountain (landslide mass), and weakens the disturbance to the landslide mass during tunnel construction and operation, thereby maintaining the stability of the landslide mass and ensuring the safety of the tunnel structure and the shallow-buried bias mountain.

The scope of the present invention is not limited thereto, and any person skilled in the art can easily make changes or substitutions within the technical scope of the present invention, and the present invention is covered thereby. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.