A reinforced structure for a shield tunnel passing through a building at close range

Abstract

The present invention discloses a reinforcement structure for a shield tunnel passing through a building at close range, belonging to the field of tunnel construction technology. The structure comprises: a bottom support portion, a first cast-in-place pile, a steel strand, an anchor plate, and a construction trough concrete portion. The bottom support portion comprises a pipe-roof pipe, a triangle iron, and a lifting ring. Multiple pipe-roof pipes are evenly arranged horizontally below the building foundation. The triangle iron is welded to both ends of the multiple pipe-roof pipes. Multiple lifting rings are evenly welded to the side walls of the triangle iron at intervals. Multiple first cast-in-place piles are arranged on both sides of the building. The construction trough concrete portion wraps around the triangle iron and the lifting ring. One end of the steel strand is fixed to the lifting ring, and the other end passes through the construction trough concrete portion and the top of the first cast-in-place pile and is fixed to the anchor plate. The present invention can diagonally pull the bottom support portion on both sides of the building through the steel strand, while the second support portion can also support the bottom support portion from the bottom. The reinforcement structure is simple and can effectively protect the integrity and safety of the building.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel construction, and in particular relates to a reinforcement structure for a shield tunnel passing through a building at close range. Background Art

[0002] Currently, tunnel construction within major urban areas often requires shield machines to pass through buildings. Building foundations are extremely sensitive to disturbances in the ground, and shield tunnel construction inevitably disturbs the surrounding soil. The combined effects of these two unfavorable factors pose a significant threat to the safe construction of the project. Controlling the safety of shield tunnels and the impact of excavation on ground subsidence and overhead structures is crucial. However, during underground construction, changes in the ground stress state directly lead to displacement and deformation of the surrounding soil. When these displacements and impacts exceed a certain range, they inevitably cause serious damage to the tunnel structure itself and the surrounding environment above, affecting the safe use of the surface and adjacent buildings.

[0003] Existing shield tunneling techniques beneath existing buildings often use sleeve valve pipes to diagonally pour concrete into the soil beneath the building foundation to strengthen the structural strength between the building and the tunnel. However, this method offers limited structural strength gains and is ineffective in improving the soil strength beneath the building in loose soils. Summary of the Invention

[0004] In view of this, the present invention provides a reinforcement structure for a shield tunnel passing through a building at close range, which can effectively solve the problems existing in the background technology.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A reinforcement structure for a shield tunnel passing through a building at close range, comprising: a bottom support part, a first cast-in-place pile, a steel strand, an anchor plate and a construction trench concrete part, wherein the bottom support part comprises a pipe-roof pipe, a triangle iron and a lifting ring, wherein a plurality of the pipe-roof pipes are horizontally and evenly arranged below the foundation of the building, the triangle iron is welded to both ends of the plurality of the pipe-roof pipes, and a plurality of the lifting rings are welded evenly at gaps on the side walls of the triangle iron, a plurality of the first cast-in-place piles are arranged on both sides of the building, the construction trench concrete part wraps the triangle iron and the lifting ring, one end of the steel strand is fixed to the lifting ring, and the other end passes through the construction trench concrete part and the top of the first cast-in-place pile and is fixed to the anchor plate.

[0007] Furthermore, it also includes a second supporting part, which includes a triangular iron concrete part and a second cast-in-place pile. The second cast-in-place pile is located at the bottom of the construction trench concrete part. The triangular iron concrete part wraps the triangular iron. The triangular iron concrete part and the second cast-in-place pile are cast in one piece.

[0008] Furthermore, the bottom support portion further includes a sleeve valve pipe concrete column, and a plurality of the sleeve valve pipe concrete columns are distributed at intervals between the pipe-roof pipes.

[0009] Furthermore, one end of the pipe-roof pipe is tapered.

[0010] Furthermore, a plurality of grouting holes are provided on the side wall of the pipe roof pipe.

[0011] The beneficial effects of the present invention are:

[0012] The present invention arranges a plurality of pipe-roof pipes under the building, welds triangular irons at both ends of the pipe-roof pipes, and uniformly welds a plurality of lifting rings on the triangular irons along the direction of the tunnel; arranges a plurality of first cast-in-place piles on both sides of the building along the direction of the tunnel; arranges anchor plates on the tops of the first cast-in-place piles; tightens each lifting ring and the anchor plates with steel strands; utilizes the first cast-in-place piles and the steel strands to have a tendency to obliquely tighten the bottom support part, so that the bottom support part drags the building upward to prevent the building from sinking during shield tunneling; the triangular iron concrete part wraps the triangular iron, and the triangular iron concrete part and the second cast-in-place piles are integrally cast and formed, so that The second support part exerts an upward thrust on the bottom support part, further preventing the building from sinking in the tunnel; the sleeve valve pipe concrete columns are distributed between the pipe-roof pipes, and the sleeve valve pipe concrete columns formed by grouting the sleeve valve pipes enhance the strength between the pipe-roof pipes and the soil; one end of the pipe-roof pipe is tapered, which facilitates the construction of the pipe-roof pipe from the construction trench on one side to the construction trench on the other side; multiple grouting holes are arranged on the side wall of the pipe-roof pipe, so that the pipe-roof pipe can be grouted like the sleeve valve pipe, and concrete will eventually remain inside the pipe-roof pipe, enhancing the strength of the pipe-roof pipe, soil and sleeve valve pipe concrete columns, thereby enhancing the structural strength of the bottom support part. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0014] Figure 1 This is a cross-sectional view of a shield tunnel passing through the reinforced structure of a building at close range.

[0015] Figure 2 yes Figure 1 Cross-sectional view of AA in the figure.

[0016] Figure 3 yes Figure 1 A partial enlarged view of position B in the middle.

[0017] Figure 4 It is a structural diagram of the pipe roof pipe.

[0018] Among them, in the figure:

[0019] 10- bottom support part, 11- pipe roof pipe, 111- grouting hole, 12- triangle iron, 13- lifting ring, 14- sleeve valve pipe concrete column, 20- first cast-in-place pile, 30- steel strand, 40- anchor plate, 50- construction trench concrete part, 60- second support part, 61- triangle iron concrete part, 62- second cast-in-place pile, 70- building, 80- tunnel. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Refer to the attached Figure 1-4 As shown, the present invention provides a reinforcement structure for a shield tunnel passing through a building at close range, comprising: a bottom support part 10, a first cast-in-place pile 20, a steel strand 30, an anchor plate 40 and a construction trench concrete part 50, wherein the bottom support part 10 comprises a pipe-roof pipe 11, a triangle iron 12 and a lifting ring 13, wherein a plurality of pipe-roof pipes 11 are horizontally and evenly arranged below the foundation of a building 70, the triangle iron 12 is welded to both ends of the plurality of pipe-roof pipes 11, and a plurality of lifting rings 13 are welded evenly at intervals on the side walls of the triangle iron 12, a plurality of first cast-in-place piles 20 are arranged on both sides of the building 70, the construction trench concrete part 50 wraps the triangle iron 12 and the lifting ring 13, one end of the steel strand 30 is fixed to the lifting ring 13, and the other end passes through the construction trench concrete part 50 and the top of the first cast-in-place pile 20 and is fixed to the anchor plate 40. Multiple first cast-in-place piles 20 are arranged on both sides of the building 70 along the direction of the tunnel 80. One end of the steel strand 30 is fixed to the top of the first cast-in-place pile 20 through the anchor plate 40. The pipe-roof pipes 11 are evenly distributed under the building 70. The triangle iron 12 is welded to the two ends of the pipe-roof pipe 11 in the construction groove on both sides of the building 70. The triangle iron 12 and the multiple pipe-roof pipes 11 form a whole. Multiple lifting rings 13 are welded to the two ends of the triangle iron 12 along the direction of the tunnel 80. The other end of the steel strand 30 is fixed to the lifting ring 13. The obliquely pulled steel strand 30 has a tendency to pull the bottom support part 10 upward, thereby supporting the building 70, which can effectively prevent the building 70 from sinking during the construction process of the tunnel 80.

[0022] An optional preferred embodiment, a reinforcement structure for a shield tunnel passing through a building at close range also includes a second support part 60, the second support part 60 includes a triangular iron concrete part 61 and a second cast-in-place pile 62, the second cast-in-place pile 62 is located at the bottom of the construction trench concrete part 50, the triangular iron concrete part 61 wraps the triangular iron 12, the triangular iron concrete part 61 and the second cast-in-place pile 62 are cast in an integrated manner, so that the second support part 60 exerts an upward thrust on the bottom support part 10, further preventing the building 70 from sinking when the tunnel 80 is passing.

[0023] In an optional preferred embodiment, the bottom support part 10 also includes a sleeve valve pipe concrete column 14, and multiple sleeve valve pipe concrete columns 14 are distributed at intervals between the pipe-roof pipes 11. The sleeve valve pipe concrete columns 14 formed by sleeve valve pipe grouting enhance the strength between the pipe-roof pipes 11 and the soil.

[0024] In an optional preferred embodiment, one end of the pipe-roof pipe 11 is tapered, so as to facilitate the construction of the pipe-roof pipe 11 from the construction groove on one side to the construction groove on the other side.

[0025] In an optional preferred embodiment, a plurality of grouting holes 111 are provided on the side wall of the pipe-roof pipe 11, so that the pipe-roof pipe 11 can be grouted like a sleeve valve pipe, and concrete will eventually remain inside the pipe-roof pipe 11, thereby enhancing the strength of the pipe-roof pipe 11, the soil and the sleeve valve pipe concrete column 14, thereby enhancing the structural strength of the bottom support part 10.

[0026] Example

[0027] A plurality of first cast-in-place piles 20 are arranged on both sides of the building 70 along the direction of the tunnel 80. Then, construction trenches are excavated at the bottom of both sides near the building 70. A plurality of second cast-in-place piles 62 are arranged at the bottom of the construction trenches on both sides of the building 70 along the direction of the tunnel 80. Then, a plurality of pipe-roof pipes 11 are inserted into the construction trenches on both sides toward the opposite side using the conical structure of the head. The gaps between adjacent pipe-roof pipes 11 are uniform. The non-conical end of the pipe-roof pipe 11 is connected to the grouting pipeline. Grouting is injected into the pipe-roof pipe 11, and concrete is allowed to enter the soil between the pipe-roof pipes 11 through the grouting holes 111. Sleeve valve pipes are used to grout the soil again between the pipe-roof pipes 11 to form sleeve valve pipe concrete columns 14. Finally, concrete remains in the pipe-roof pipe 11. Mud; weld the triangle iron 12 to the two ends of multiple pipe-roof pipes 11 in the construction trench, then weld the lifting ring 13 on the side wall of the triangle iron 12, so that the lifting ring 13 corresponds to the first cast-in-place pile 20 respectively, and then drill holes for the steel strand 30 obliquely upward in the construction trench, then fix one end of the steel strand 30 on the lifting ring 13, and anchor the other end to the top of the first cast-in-place pile 20 with the anchor plate 40, and construct the steel strand 30 on both sides of the building 70 in the direction of the tunnel 80 in turn; then use the template to enclose the triangle iron 12 and the bottom of the construction trench to form a cavity and pour concrete to form the triangle iron concrete part 61. After the triangle iron concrete part 61 is hardened and cured, pour concrete into the construction trenches on both sides of the building 70 to form the construction trench concrete part 50.

[0028] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Reference can be made to the common and similar parts between the various embodiments. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the method description.

[0029] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A reinforced structure for a shield tunnel passing through a building at close range, characterized in that: include: The bottom support part, the first cast-in-place pile, the steel strand, the anchor plate and the construction trench concrete part, the bottom support part includes a pipe-roof pipe, a triangle iron and a lifting ring, a plurality of the pipe-roof pipes are horizontally and evenly arranged below the foundation of the building, the triangle iron is welded to the two ends of the plurality of the pipe-roof pipes, and the plurality of the lifting rings are welded evenly on the side walls of the triangle iron at gaps, a plurality of the first cast-in-place piles are arranged on both sides of the building, the construction trench concrete part wraps the triangle iron and the lifting ring, one end of the steel strand is fixed on the lifting ring, and the other end passes through the construction trench concrete part and the top of the first cast-in-place pile and is fixed on the anchor plate.

2. A reinforced structure for a shield tunnel passing through a building at close range according to claim 1, characterized in that: It also includes a second supporting part, which includes a triangular iron concrete part and a second cast-in-place pile. The second cast-in-place pile is located at the bottom of the construction trench concrete part. The triangular iron concrete part wraps the triangular iron. The triangular iron concrete part and the second cast-in-place pile are cast in one piece.

3. The reinforced structure of a shield tunnel passing through a building at close range according to claim 1, characterized in that: The bottom support portion further includes a sleeve valve pipe concrete column, and a plurality of the sleeve valve pipe concrete columns are distributed between the pipe-roof pipes at intervals.

4. The reinforced structure of a shield tunnel passing through a building at close range according to claim 1, characterized in that: One end of the pipe-roof pipe is tapered.

5. The reinforced structure of a shield tunnel passing through a building at close range according to claim 1, characterized in that: A plurality of grouting holes are arranged on the side wall of the pipe roof pipe.

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