A deformation joint structure and construction method of an integral underground pipe gallery

Abstract

The present invention provides a deformation joint structure and construction method of an integral underground pipe gallery, which belongs to the technical field of underground structure construction and is suitable for controlling the deformation of the side wall of an underground pipe gallery with problems such as structural cracks caused by structural settlement. It arranges seamless steel pipes on the side wall of the deformation joint, and steel bars are placed in the seamless steel pipes, so that the deformation joint becomes similar to a hinged node structure; two seamless steel pipes at corresponding positions are connected by a crossbeam, and all the crossbeams are connected by connecting steel pipes, so that the seamless steel pipes, the crossbeams and the connecting steel pipes are in a connected state to form a communicating vessel, and the communicating vessel is filled with butter, which can realize the expansion and contraction of the steel bars, thereby controlling the vertical deformation of the side wall of the pipe gallery, and controlling the vertical settlement of the pipe gallery within a certain range. When settlement occurs on one side of the wall, the butter in the connecting steel pipe is filled into the seamless steel pipe at the settlement position by providing power through an electric pump, so as to realize compensatory supply, thereby controlling the settlement.

Description

Technical Field

[0001] The present invention relates to the technical field of underground structure construction, and in particular to a deformation joint structure of an integral underground pipe gallery and a construction method thereof. Background Art

[0002] The waterproofing project at the expansion joints of the tunnel is the most important and difficult part of the tunnel waterproofing project. Water leakage is very likely to occur at the expansion joints, and the construction quality is difficult to guarantee, which is prone to quality defects. The settlement problem of the expansion joints of the tunnel side walls is an important part of the waterproofing project. If the side wall settlement is too large, it will directly lead to leakage of the expansion joints, causing serious problems. Regarding the method of preventing the expansion joints of the side walls from settling, the specification recommends that multiple seamless steel pipes filled with butter be pre-buried in the vertical direction on the side walls. However, due to the limitations of the butter itself, it cannot be replenished in time once settlement occurs, causing leakage of the expansion joints.

[0003] Therefore, there is an urgent need to provide a deformation joint structure and construction method for an integral underground pipe gallery that is easy to operate and has a neat appearance.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the invention and should not be regarded as an admission or any form of suggestion that the information is the prior art known to ordinary technicians in the field. Summary of the invention

[0005] The purpose of the present invention is to provide a deformation joint structure and construction method of an integral underground pipe gallery, which can actively replenish butter through external pressure, thereby ensuring sufficient butter to achieve the purpose of controlling the expansion and contraction of steel bars, and further controlling the vertical settlement of the side wall of the pipe gallery. The deformation joint structure of the side wall of an underground pipe gallery with problems such as structural cracks caused by structural settlement, especially adopting an active control method to ensure sufficient butter, thereby ensuring the free expansion and contraction of steel bars, and achieving the purpose of controlling the deformation of the side wall of the pipe gallery.

[0006] In order to achieve the above object, the technical solution of the present invention is:

[0007] A deformation joint structure of an integral underground pipe gallery, comprising:

[0008] Seamless steel pipes, the seamless steel pipes are respectively a first seamless steel pipe and a second seamless steel pipe, the first seamless steel pipe and the second seamless steel pipe are symmetrically arranged at both sides of the deformation joint of the poured concrete side wall, and steel bars are inserted into the seamless steel pipes;

[0009] A crossbeam, wherein two first seamless steel pipes and two second seamless steel pipes corresponding to each other are respectively connected to the corresponding crossbeam, and a reserved hole is provided at the center of the crossbeam;

[0010] A connecting steel pipe is connected to all the cross beams in sequence through the reserved holes, so that a communicating vessel is formed between all the first seamless steel pipes, the second seamless steel pipes, the cross beams and the connecting steel pipes, and the communicating vessel is filled with butter; reserved steel pipe sections are provided at both ends of the connecting steel pipe, and the reserved steel pipe sections are sealed with the butter by matching rubber plugs.

[0011] Compared with the prior art, the beneficial technical effects of the present invention are:

[0012] 1. The deformation joint structure of the integral underground pipe gallery provided by the present invention is that a seamless steel pipe is arranged on the side wall of the deformation joint, and steel bars are placed in the seamless steel pipe, so that the deformation joint becomes similar to a hinged node structure, which can release the internal force of the bending moment and provide part of the shear force; two seamless steel pipes at corresponding positions are connected by a crossbeam, and all the crossbeams are connected by a connecting steel pipe, so that the seamless steel pipe, the crossbeam and the connecting steel pipe are in a connected state to form a communicating vessel, and the communicating vessel is filled with butter, which can realize the expansion and contraction of the steel bar, thereby controlling the vertical deformation of the side wall of the pipe gallery, and controlling the vertical settlement of the pipe gallery within a certain range, so as not to cause a large settlement difference and leakage of the deformation joint; and the reserved steel pipe sections at both ends of the connecting steel pipe are connected to an electric pump. When the wall on one side settles, the electric pump provides power to fill the butter in the connecting steel pipe into the seamless steel pipe at the settlement position, so as to realize compensatory supply, and finally achieve the purpose of actively controlling the settlement.

[0013] 2. The construction method of the deformation joint structure of the integral underground pipe gallery provided by the present invention is easy to operate, saves time and effort, can ensure the construction quality, and has good promotion value.

[0014] Furthermore, it also includes an electric pump. When the poured concrete side wall sinks, the rubber plug at the end of the reserved steel pipe section on the corresponding side is opened, so that the electric pump is connected to the opened reserved steel pipe section. Therefore, when one side of the wall sinks, the electric pump provides power to fill the butter in the connected steel pipe into the seamless steel pipe at the sinking position, realizing compensatory supply and ultimately achieving the purpose of actively controlling the sinking.

[0015] Furthermore, in order to firmly install the seamless steel pipe and complete the filling of butter, the seamless steel pipe is vertically spaced, and the lower end thereof penetrates 250 mm into the embedded steel pipe of the poured concrete side wall.

[0016] Furthermore, in order to form a connection between the two rows of seamless steel pipes and achieve mutual communication, the seamless steel pipes are welded and fixed to the crossbeam.

[0017] Furthermore, a steel-edged rubber waterstop is provided between the first seamless steel pipe and the second seamless steel pipe corresponding to each other, so that the force on each part can be uniform and reasonable.

[0018] Furthermore, the length of the steel bar is 600 mm, so that the deformation joint becomes similar to a hinged node structure, which can release the internal force of the bending moment and provide part of the shear force.

[0019] Furthermore, according to design requirements, the length L of the single-sided seamless steel pipe is 300 mm.

[0020] The present invention also provides a construction method for the deformation joint structure of the above-mentioned integral underground pipe gallery, and the construction method comprises:

[0021] Two rows of seamless steel pipes are arranged on both sides of the deformation joint of the poured concrete side wall. The lower end of the seamless steel pipe is 250mm deep into the embedded steel pipe in the side wall. The spacing between each row of seamless steel pipes is 400mm. Steel bars are inserted into the seamless steel pipes.

[0022] Connect the seamless steel pipes at corresponding positions of two rows with crossbeams;

[0023] The connecting steel pipe connects all the cross beams into one. A reserved hole with the same diameter as the connecting steel pipe is provided at the center of the cross beam. The two are welded and fixed at the connection seam, so that a communicating vessel is formed between the seamless steel pipe, the cross beam and the connecting steel pipe. The communicating vessel is filled with butter. Reserved steel pipe sections are provided at both ends of the connecting steel pipe, and the reserved steel pipe sections are sealed with the butter through rubber plugs.

[0024] When the side wall sinks, loosen the rubber plug of the reserved steel pipe section on the corresponding side, connect the electric pump, and fill butter into the seamless steel pipe at the sinking position through the reserved steel pipe to achieve compensatory supply.

[0025] Furthermore, the crossbeam is made of a seamless steel pipe with a diameter of 32 mm.

[0026] Furthermore, the length of the steel bar is 600 mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of a deformation joint structure of an integral underground pipe gallery in one embodiment of the present invention;

[0028] Figure 2 It is a schematic diagram of the connection between seamless steel pipes in the deformation joint structure of an integral underground pipe gallery in one embodiment of the present invention.

[0029] In the figure:

[0030] 1-cast concrete side wall; 2-deformation joint; 3-steel edge rubber waterstop; 4-first seamless steel pipe; 5-second seamless steel pipe; 6-rebar; 7-butter; 8-crossbeam; 9-connecting steel pipe; 10-rubber plug; 11-reserved steel pipe section; 12-reserved hole. DETAILED DESCRIPTION

[0031] The deformation joint structure and construction method of the integral underground pipe gallery proposed by the present invention are further described in detail below in combination with the accompanying drawings and specific embodiments. According to the following description and claims, the advantages and features of the present invention will become clearer. It should be noted that the accompanying drawings are all in a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. For the convenience of description, the "upper" and "lower" described below are consistent with the upper and lower directions of the accompanying drawings, but this cannot be a limitation of the technical solution of the present invention.

[0032] Embodiment 1

[0033] Combine the following Figure 1 and Figure 2 , the structural composition of the deformation joint structure of the integral underground pipe gallery of the present invention is described in detail.

[0034] Please refer to Figure 1 and Figure 2 A deformation joint structure of an integral underground pipe gallery comprises a seamless steel pipe, a cross beam 8 and a connecting steel pipe 9. The seamless steel pipes are respectively a first seamless steel pipe 4 and a second seamless steel pipe 5. The first seamless steel pipe 4 and the second seamless steel pipe 5 are symmetrically arranged at intervals on both sides of the deformation joint 2 of the cast concrete side wall 1, and steel bars 6 are inserted in the seamless steel pipes; two corresponding first seamless steel pipes 4 and second seamless steel pipes 5 are respectively connected by corresponding cross beams 8, and the cross beams 8 are provided with a reserved hole 12 at the center position; the connecting steel pipe 9 is connected to all the cross beams 8 in sequence through the reserved holes 12, so that a communicating vessel is formed between all the first seamless steel pipes 4, the second seamless steel pipes 5, the cross beams 8 and the connecting steel pipes 9, and the communicating vessel is filled with butter 7; reserved steel pipe sections 11 are provided at both ends of the connecting steel pipe 9, and the reserved steel pipe sections 11 are blocked with butter 7 by matching rubber plugs 10.

[0035] Specifically, the deformation joint structure of the integral underground tunnel of the present embodiment is achieved by arranging seamless steel pipes on the side walls where the deformation joints 2 are located, and placing steel bars 6 in the seamless steel pipes, so that the deformation joints become similar to hinged node structures, which can release the internal force of the bending moment and provide part of the shear force; the two seamless steel pipes at the corresponding positions are connected by a crossbeam, and all the crossbeams are connected by connecting steel pipes, so that the seamless steel pipes, the crossbeams and the connecting steel pipes are in a connected state to form a communicating vessel, and the communicating vessel is filled with butter, which can realize the expansion and contraction of the steel bars, thereby controlling the vertical deformation of the side walls of the tunnel, and controlling the vertical settlement of the tunnel within a certain range, so as not to cause a large settlement difference and leakage of the deformation joint; and the reserved steel pipe sections at both ends of the connecting steel pipes are connected to an electric pump. When settlement occurs on one side of the wall, the electric pump provides power to fill the butter in the connecting steel pipe into the seamless steel pipe at the settlement position, thereby realizing compensatory supply and ultimately achieving the purpose of actively controlling the settlement.

[0036] In this embodiment, more preferably, an electric pump is further included. When the poured concrete side wall 1 sinks, the rubber plug 10 at the end of the reserved steel pipe section 11 on the corresponding side is opened, so that the electric pump is connected to the opened reserved steel pipe section 11. Therefore, when one side of the wall sinks, the electric pump provides power to fill the butter 7 in the connecting steel pipe 9 into the seamless steel pipe at the sinking position, thereby realizing compensatory supply and ultimately achieving the purpose of actively controlling the sinking.

[0037] In this embodiment, more preferably, in order to firmly install the seamless steel pipe and complete the filling of butter 7, the seamless steel pipe is vertically spaced, and the lower end thereof penetrates 250 mm into the embedded steel pipe of the poured concrete side wall 1.

[0038] In this embodiment, more preferably, in order to form a connection between the two rows of seamless steel pipes and achieve mutual communication, the seamless steel pipes are welded and fixed to the crossbeam 8.

[0039] In this embodiment, more preferably, a steel-edge rubber waterstop strip 3 is further provided between the first seamless steel pipes 4 and the second seamless steel pipes 5 corresponding to each other, so that the force on each part can be uniform and reasonable.

[0040] In this embodiment, more preferably, the length of the steel bar 6 placed in the seamless steel pipe is 600 mm, so that the deformation joint becomes similar to a hinged node structure, which can release the internal force of the bending moment and provide part of the shear force.

[0041] In this embodiment, more preferably, according to design requirements, the length L of the single-sided seamless steel pipe is 300 mm.

[0042] Please continue to refer to Figure 1 and Figure 2 This embodiment also provides a construction method for the deformation joint structure of the aforementioned integral underground pipe gallery, and the construction method includes two construction stages:

[0043] The first construction stage includes filling the seamless steel pipe, the cross beam 8 and the connecting steel pipe 9 with butter 7 for standby use; and according to the position characteristics of the left and right rows of seamless steel pipes required on the poured concrete side wall 1, welding every two seamless steel pipes filled with butter (i.e., the first seamless steel pipe 4 and the second seamless steel pipe 5) with a cross beam 8 filled with butter 7 in an open space, and welding every two cross beams 8 filled with butter 7 with a connecting steel pipe 9 filled with butter 7, and welding a reserved steel pipe section 11 at the end cross beam, so that the seamless steel pipe, the cross beam 8 and the connecting steel pipe 9 are in a three-way connected state, and transported to the construction site for standby use; at the same time, pre-buried water-stop steel plates are welded to the structural steel bars of the component according to the designed position, and then the formwork is supported to carry out the first stage of concrete pouring;

[0044] The second construction stage includes placing the prefabricated seamless steel pipes filled with butter 7 in a three-way connected state, the cross beam 8 and the connecting steel pipe 9 in the designated position according to the construction requirements after the first stage of concrete pouring is completed, wherein the lower end of the seamless steel pipe is 250mm deep into the embedded steel pipe in the side wall, the spacing between each row of seamless steel pipes is 400mm, and steel bars 6 are inserted in the seamless steel pipes; then the second stage of pouring is started; and the concrete is cured, and after reaching a certain strength, the next construction process is carried out;

[0045] When settlement occurs on one side of the poured concrete side wall 1, the rubber plug 10 of the reserved steel pipe section 11 on the side closer to the settlement location is opened, and an electric pump is connected. The energy of the electric pump is used to compensate the butter 7 in the reserved steel pipe section 11 into the seamless steel pipe at the settlement location, thereby achieving active compensation of the butter, thereby ensuring the expansion and contraction of the steel bars 6 and reducing further settlement.

[0046] In this embodiment, more preferably, in order to facilitate material acquisition and save costs, the crossbeam 8 is made of a seamless steel pipe with a diameter of 32 mm.

[0047] The above description is only a description of the preferred embodiments of the present invention, and does not limit the scope of the present invention. Any changes and modifications made by those skilled in the art based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A construction method for a deformation joint structure of an integral underground pipe gallery, characterized in that: The deformation joint structure of the integral underground pipe gallery is adopted, and the deformation joint structure of the integral underground pipe gallery comprises: Seamless steel pipes, the seamless steel pipes are respectively a first seamless steel pipe and a second seamless steel pipe, the first seamless steel pipe and the second seamless steel pipe are symmetrically arranged at both sides of the deformation joint of the poured concrete side wall, and steel bars are inserted into the seamless steel pipes; A crossbeam, wherein two first seamless steel pipes and two second seamless steel pipes corresponding to each other are respectively connected to the corresponding crossbeam, and a reserved hole is provided at the center of the crossbeam; A connecting steel pipe, wherein the connecting steel pipe is connected to all the beams in sequence through the reserved holes, so that a communicating vessel is formed between all the first seamless steel pipes, the second seamless steel pipes, the beams and the connecting steel pipes, and the communicating vessel is filled with butter; reserved steel pipe sections are provided at both ends of the connecting steel pipe, and the reserved steel pipe sections are sealed with the butter through rubber plugs provided in a matching manner; an electric pump is also included, and when the poured concrete side wall settles, the rubber plug at the end of the reserved steel pipe section on the corresponding side is opened, so that the electric pump is connected to the opened reserved steel pipe section; the construction method comprises: Two rows of seamless steel pipes are arranged on both sides of the deformation joint of the poured concrete side wall. The lower end of the seamless steel pipe is 250mm deep into the embedded steel pipe in the side wall. The spacing between each row of seamless steel pipes is 400mm. Steel bars are inserted into the seamless steel pipes. Connect the seamless steel pipes at corresponding positions of two rows with crossbeams; The connecting steel pipe connects all the cross beams into one. A reserved hole with the same diameter as the connecting steel pipe is provided at the center of the cross beam. The two are welded and fixed at the connection seam, so that a communicating vessel is formed between the seamless steel pipe, the cross beam and the connecting steel pipe. The communicating vessel is filled with butter. Reserved steel pipe sections are provided at both ends of the connecting steel pipe, and the reserved steel pipe sections are sealed with the butter through rubber plugs. When the side wall sinks, loosen the rubber plug of the reserved steel pipe section on the corresponding side, connect the electric pump, and fill butter into the seamless steel pipe at the sinking position through the reserved steel pipe section to achieve compensatory supply.

2. The construction method according to claim 1, characterized in that: A steel-edged rubber waterstop is also provided between the first seamless steel pipe and the second seamless steel pipe corresponding to each other.

3. The construction method according to claim 1, characterized in that: The length of the steel bar is 600 mm.

4. The construction method according to claim 1, characterized in that: The length L of the single-sided seamless steel pipe is 300 mm.

5. The construction method according to claim 1, characterized in that: The crossbeam is made of a seamless steel pipe with a diameter of 32 mm.

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