CN220319569U - Reinforcement back pressure device for preventing subway tunnel from floating up - Google Patents
Reinforcement back pressure device for preventing subway tunnel from floating up Download PDFInfo
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- CN220319569U CN220319569U CN202322191896.3U CN202322191896U CN220319569U CN 220319569 U CN220319569 U CN 220319569U CN 202322191896 U CN202322191896 U CN 202322191896U CN 220319569 U CN220319569 U CN 220319569U
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- back pressure
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- tunnel
- tunnel structure
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- 230000002787 reinforcement Effects 0.000 title claims abstract description 19
- 238000007667 floating Methods 0.000 title claims abstract description 16
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 18
- 239000000956 alloy Substances 0.000 claims abstract description 18
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract 2
- 238000007789 sealing Methods 0.000 claims description 12
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 238000010276 construction Methods 0.000 abstract description 5
- 230000000087 stabilizing effect Effects 0.000 abstract description 2
- 239000004567 concrete Substances 0.000 description 4
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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- Lining And Supports For Tunnels (AREA)
Abstract
The utility model discloses a reinforcement back pressure device for resisting subway tunnel floating, which relates to the technical field of tunnel stabilizing structures and comprises a tunnel structure main body, wherein a reinforcement supporting mechanism is arranged on the inner wall of the tunnel structure main body, a back pressure supporting mechanism is arranged at the top of the tunnel structure main body, the reinforcement supporting mechanism comprises an expansion supporting unit and a secondary expansion unit, and the back pressure supporting mechanism comprises a pouring positioning unit and a back pressure supporting unit. According to the utility model, through the cooperation of the hollow reinforcing steel bar basket and the alloy connecting arm, pouring and positioning treatment can be performed on the back pressure bedplate, through the cooperation design of the internal thread ring II and the plane support bar, a limit structure can be formed at the top of the tunnel structure main body, downward back pressure is applied to the tunnel structure main body after the tunnel structure main body is about to float upwards, the problem that the tunnel structure main body floats upwards easily due to nearby construction is avoided, and the safety of the tunnel structure main body is ensured.
Description
Technical Field
The utility model relates to the technical field of tunnel stabilizing structures, in particular to a reinforcement back pressure device for preventing subway tunnels from floating upwards.
Background
The tunnel is an engineering building embedded in the stratum, is a form of utilizing underground space by human beings, and can be divided into a traffic tunnel, a hydraulic tunnel, a municipal tunnel, a mine tunnel and a military tunnel, and the structure of the tunnel comprises a main building and auxiliary equipment. The main building consists of a tunnel body and a tunnel door, auxiliary equipment comprises a car shelter, a fire protection facility, an emergency communication and water-proof and drainage facility, and a long tunnel is provided with special ventilation and illumination equipment
The Chinese patent discloses a subway tunnel concrete member, the publication number is CN214145512U, and the technical scheme disclosed in the patent document is as follows: comprises a component body, a reinforcing mesh arranged inside the component body and an anchor piece used for connecting the component body; the member body is equipped with a plurality of, the member body is arc concrete slab, the outer wall butt of member body is on the inner wall in tunnel, and circumference is adjacent the member body constitutes a cask, anchor assembly sets up the edge at the member body, the anchor assembly will adjacent member body connect.
In order to solve the problems that the construction period of sprayed concrete is longer and the construction difficulty is higher, the prior art adopts a mode of structural cooperation of a design member body, an anchoring piece and the like to treat, but the condition that the tunnel floats up easily due to nearby construction can also occur, the excavation of the foundation pit beside or above a subway tunnel can cause the problems that tunnel segments float up, crack and the like, and the improvement is needed.
Disclosure of Invention
The utility model aims to provide a reinforcement back pressure device for resisting the floating of a subway tunnel, so as to solve the problems in the background technology.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides a consolidate back pressure device of anti subway tunnel come-up, includes tunnel structure main part, be provided with on the inner wall of tunnel structure main part and consolidate supporting mechanism, the top of tunnel structure main part is provided with back pressure supporting mechanism.
The reinforcement supporting mechanism comprises an expansion supporting unit and a secondary expansion unit, and the back pressure supporting mechanism comprises a pouring positioning unit and a back pressure supporting unit.
The back pressure supporting unit comprises a plane supporting bar and an internal thread ring II, the plane supporting bar is fixedly connected to the top of the tunnel structure main body, a long thread piece is connected to the inner wall of the internal thread ring II in a threaded mode, an alloy frame piece is fixedly arranged at the top of the long thread piece, a movable plug-in unit is movably inserted into an inner cavity of the alloy frame piece, the bottom of the long thread piece is movably connected with the top of the plane supporting bar, and back pressure supporting treatment of the tunnel structure main body can be completed through the cooperation of the internal thread ring II, the long thread piece and the plane supporting bar.
The technical scheme of the utility model is further improved as follows: the pouring positioning unit comprises a back pressure bedplate, the back pressure bedplate is positioned right above the tunnel structure main body, and the second internal thread ring is fixedly arranged at the top of the back pressure bedplate.
The technical scheme of the utility model is further improved as follows: alloy connecting arms are fixedly arranged on two sides of the back pressure bedplate, a hollowed-out reinforcing bar basket is fixedly arranged at one end, far away from the back pressure bedplate, of the alloy connecting arms, and positioning treatment of the back pressure bedplate can be completed through cooperation of the alloy connecting arms and the hollowed-out reinforcing bar basket.
The technical scheme of the utility model is further improved as follows: the expansion supporting unit comprises a plane connecting strip, the plane connecting strip is fixedly connected to the inner wall of the tunnel structure main body, an inner thread ring I is fixedly arranged on the outer wall of the inner side of the plane connecting strip, and a hollow plug-in column is conveniently driven by a user through the design of the inner thread ring I.
The technical scheme of the utility model is further improved as follows: the inner wall of the first internal thread ring is connected with a short thread piece in a threaded manner, the threaded end of the short thread piece is rotationally connected with a hollow plug-in column, the outer wall of the hollow plug-in column is in sliding connection with the inner wall of the plane connecting strip, one side, away from the short thread piece, of the hollow plug-in column is fixedly connected with a plug-in protruding thorn, and the hollow plug-in column is convenient to extend into the ground through the shape design of the plug-in protruding thorn.
The technical scheme of the utility model is further improved as follows: the secondary expansion unit comprises a sealing sliding plate and a gas generator, wherein the gas generator is fixedly arranged on the inner wall of the hollow plug-in column, the sealing sliding plate is connected in the inner cavity of the hollow plug-in column in a sliding manner, and the gas generator is used for driving the sliding wings to move.
The technical scheme of the utility model is further improved as follows: the sealing sliding plate is fixedly connected with a sliding fin on one side far away from the gas generator, the outer wall of the sliding fin is in sliding connection with the inner wall of the hollow plug-in column, and the sealing sliding plate can be plugged in the ground through the design of the sliding fin, so that the stability of the tunnel structure main body is further improved.
By adopting the technical scheme, compared with the prior art, the utility model has the following technical progress:
1. the utility model provides a reinforcement back pressure device for resisting the floating of a subway tunnel, which can be used for pouring and positioning a back pressure bedplate through the cooperation of a hollow steel bar basket and an alloy connecting arm, and can be used for forming a limiting structure at the top of a tunnel structure main body through the cooperation design of an internal thread ring II and a plane supporting bar, so that after the tunnel structure main body is about to float, downward back pressure is applied to the tunnel structure main body at the top of the tunnel structure main body, the problem that the tunnel structure main body is easy to float due to nearby construction is avoided, and the safety of the tunnel structure main body is ensured.
2. The utility model provides a reinforcement back pressure device for preventing a subway tunnel from floating up, which is characterized in that through the design of an internal thread ring I, a user can rotate a short thread piece and can drive a hollow plug-in column to slide in an inner cavity of a plane connecting strip, so that the hollow plug-in column and a plug-in protruding thorns are promoted to extend into the ground, the contact area between the whole tunnel structure main body and the ground is increased, and the stability of the tunnel structure main body in the ground is improved.
3. The utility model provides a reinforcement back pressure device for preventing a subway tunnel from floating up, which is designed by a gas generator, gas can be generated and conveyed in the inner cavity of a hollow plug-in column after the gas generator works, the gas pressure at the half side of the inner cavity of the hollow plug-in column is increased along with the gas pressure, a thrust force is applied to a sealing sliding plate, and a sliding wing is synchronously promoted to move out of the inner cavity of the hollow plug-in column and smoothly plug-in the inner part of the ground, so that the stability of a tunnel structure main body in the ground is further improved, and the floating-up preventing capability of the structure is improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is an enlarged schematic view of the present utility model at structure A;
FIG. 3 is a schematic view of a hollow plug post according to the present utility model;
FIG. 4 is a schematic view of the back pressure support mechanism of the present utility model;
fig. 5 is an enlarged schematic view of the structure B of the present utility model.
In the figure: 1. a tunnel structure body;
2. reinforcing the supporting mechanism; 21. a planar connecting strip; 22. an internal thread ring I; 23. a short threaded member; 24. a hollow plug-in column; 241. sealing the sliding plate; 242. a gas generator; 243. sliding wings; 25. inserting and protruding thorns;
3. a back pressure support mechanism; 31. a planar support bar; 32. a counter pressure platen; 33. an alloy connecting arm; 34. hollow steel bar basket; 35. an internal thread ring II; 36. a long threaded member; 37. an alloy frame member; 38. a movable insert.
Detailed Description
The utility model is further illustrated by the following examples:
example 1
As shown in fig. 1-5, the utility model provides a reinforced back pressure device for resisting the floating of a subway tunnel, which comprises a tunnel structure main body 1, wherein a reinforced supporting mechanism 2 is arranged on the inner wall of the tunnel structure main body 1, a back pressure supporting mechanism 3 is arranged at the top of the tunnel structure main body 1, the reinforced supporting mechanism 2 comprises an expansion supporting unit and a secondary expansion unit, the back pressure supporting mechanism 3 comprises a pouring positioning unit and a back pressure supporting unit, the back pressure supporting unit comprises a plane supporting bar 31 and an internal thread ring II 35, the plane supporting bar 31 is fixedly connected to the top of the tunnel structure main body 1, a long thread piece 36 is connected to the inner wall of the internal thread ring II 35 in a threaded manner, an alloy frame piece 37 is fixedly arranged at the top of the long thread piece 36, a movable plug 38 is movably inserted into an inner cavity of the alloy frame piece 37, the bottom of the long thread piece 36 is movably connected to the top of the plane supporting bar 31, and the long thread piece 36 is manually rotated, so that the bottom of the long thread piece 36 is movably connected to the top of the plane supporting bar 31, the back pressure supporting treatment of the tunnel structure main body 1 is completed, and a user can insert the movable plug 38 into the inside the plane supporting bar 37 through the design of the alloy frame piece 37, and thus the user can conveniently rotate the long thread piece 36 manually.
Example 2
As shown in fig. 1-5, on the basis of embodiment 1, the present utility model provides a technical solution: preferably, the pouring positioning unit comprises a back pressure bedplate 32, the back pressure bedplate 32 is positioned right above the tunnel structure main body 1, the second internal thread ring 35 is fixedly arranged at the top of the back pressure bedplate 32, alloy connecting arms 33 are fixedly arranged on two sides of the back pressure bedplate 32, a hollowed-out reinforcement basket 34 is fixedly arranged at one end of each alloy connecting arm 33 far away from the back pressure bedplate 32, a user can pour and position the hollowed-out reinforcement basket 34 in the ground by means of concrete in advance, the back pressure bedplate 32 is positioned right above the tunnel structure main body 1, and the back pressure bedplate 32 is subjected to stable limiting treatment, so that back pressure supporting work is facilitated.
Example 3
As shown in fig. 1-5, on the basis of embodiment 1, the present utility model provides a technical solution: preferably, the expansion supporting unit comprises a plane connecting strip 21, the plane connecting strip 21 is fixedly connected to the inner wall of the tunnel structure main body 1, an inner thread ring I22 is fixedly arranged on the outer wall of the inner side of the plane connecting strip 21, a short thread piece 23 is connected to the inner wall of the inner thread ring I22 in a threaded manner, a hollow plug-in column 24 is connected to the threaded end of the short thread piece 23 in a rotating manner, the outer wall of the hollow plug-in column 24 is in sliding connection with the inner wall of the plane connecting strip 21, a plug-in protruding pin 25 is fixedly connected to one side of the hollow plug-in column 24 away from the short thread piece 23, the secondary expansion unit comprises a sealing sliding plate 241 and a gas generator 242, the gas generator 242 is fixedly arranged on the inner wall of the hollow plug-in column 24, the sealing sliding plate 241 is slidably connected in the inner cavity of the hollow plug-in column 24, one side of the sealing sliding plate 241 away from the gas generator 242 is fixedly connected with the sliding wing 243, the outer wall of the sliding wing 243 is slidably connected with the inner wall of the hollow plug-in column 24, a user can manually rotate the short threaded piece 23, the hollow plug-in column 24 and the plug-in protruding thorns 25 are enabled to extend into the ground, the stability of the tunnel structure main body 1 in the ground is improved, the gas generator 242 is controlled to work, gas is output, the sliding wing 243 is enabled to move out of the inner cavity of the hollow plug-in column 24 under the action of air pressure, and the sliding wing 243 is enabled to be plugged into the ground to further stabilize the tunnel structure main body 1, and the safety of the tunnel structure main body 1 is guaranteed.
The working principle of the reinforcement back pressure device for resisting the floating of the subway tunnel is specifically described below.
As shown in fig. 1-5, the short screw 23 is manually rotated to enable the hollow insertion column 24 and the insertion spike 25 to extend into the ground, so as to improve the stability of the tunnel structure body 1 in the ground, then the gas generator 242 is controlled to work, the sliding wing 243 is enabled to move out of the inner cavity of the hollow insertion column 24 under the action of air pressure and to be inserted into the ground to further stabilize the tunnel structure body 1, the hollow rebar basket 34 is poured and positioned in the ground in advance by means of concrete, the back pressure bedplate 32 is positioned right above the tunnel structure body 1, and then the long screw 36 is manually rotated, so that the bottom of the long screw 36 is movably connected with the top of the plane support bar 31, and the back pressure supporting treatment of the tunnel structure body 1 is completed.
The foregoing utility model has been generally described in great detail, but it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, it is intended to cover modifications or improvements within the spirit of the inventive concepts.
Claims (7)
1. The utility model provides a reinforcement back pressure device of anti subway tunnel come-up, includes tunnel structure main part (1), its characterized in that: the inner wall of the tunnel structure main body (1) is provided with a reinforcing and supporting mechanism (2), and the top of the tunnel structure main body (1) is provided with a back pressure supporting mechanism (3);
the reinforcement supporting mechanism (2) comprises an expansion supporting unit and a secondary expansion unit, and the back pressure supporting mechanism (3) comprises a pouring positioning unit and a back pressure supporting unit;
the back pressure supporting unit comprises a plane supporting bar (31) and an internal thread ring II (35), wherein the plane supporting bar (31) is fixedly connected to the top of the tunnel structure main body (1), a long thread piece (36) is connected to the inner wall of the internal thread ring II (35) in a threaded mode, an alloy frame piece (37) is fixedly arranged at the top of the long thread piece (36), a movable plug-in unit (38) is movably inserted into an inner cavity of the alloy frame piece (37), and the bottom of the long thread piece (36) is movably connected with the top of the plane supporting bar (31).
2. The reinforcement back pressure device for resisting floating of subway tunnel according to claim 1, wherein: the pouring positioning unit comprises a back pressure bedplate (32), the back pressure bedplate (32) is positioned right above the tunnel structure main body (1), and the internal thread ring II (35) is fixedly arranged at the top of the back pressure bedplate (32).
3. The reinforcement back pressure device for preventing subway tunnel from floating up according to claim 2, wherein: alloy connecting arms (33) are fixedly arranged on two sides of the back pressure bedplate (32), and hollowed-out reinforcing steel bar baskets (34) are fixedly arranged at one ends, far away from the back pressure bedplate (32), of the alloy connecting arms (33).
4. The reinforcement back pressure device for resisting floating of subway tunnel according to claim 1, wherein: the expansion supporting unit comprises a plane connecting strip (21), the plane connecting strip (21) is fixedly connected to the inner wall of the tunnel structure main body (1), and an internal thread ring I (22) is fixedly arranged on the outer wall of the inner side of the plane connecting strip (21).
5. The back pressure reinforcing device for preventing the subway tunnel from floating up according to claim 4, wherein: the inner wall of the first internal thread ring (22) is in threaded connection with a short thread piece (23), the threaded end of the short thread piece (23) is rotationally connected with a hollow plug-in column (24), the outer wall of the hollow plug-in column (24) is in sliding connection with the inner wall of the plane connecting strip (21), and one side, far away from the short thread piece (23), of the hollow plug-in column (24) is fixedly connected with a plug-in protruding thorn (25).
6. The back pressure reinforcing device for preventing the subway tunnel from floating up according to claim 5, wherein: the secondary expansion unit comprises a sealing sliding plate (241) and a gas generator (242), wherein the gas generator (242) is fixedly arranged on the inner wall of the hollow plug-in column (24), and the sealing sliding plate (241) is connected in the inner cavity of the hollow plug-in column (24) in a sliding manner.
7. The back pressure reinforcing device for preventing the subway tunnel from floating up according to claim 6, wherein: and one side of the sealing sliding plate (241) far away from the gas generator (242) is fixedly connected with a sliding fin (243), and the outer wall of the sliding fin (243) is in sliding connection with the inner wall of the hollow plug-in column (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322191896.3U CN220319569U (en) | 2023-08-15 | 2023-08-15 | Reinforcement back pressure device for preventing subway tunnel from floating up |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322191896.3U CN220319569U (en) | 2023-08-15 | 2023-08-15 | Reinforcement back pressure device for preventing subway tunnel from floating up |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220319569U true CN220319569U (en) | 2024-01-09 |
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ID=89409684
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322191896.3U Active CN220319569U (en) | 2023-08-15 | 2023-08-15 | Reinforcement back pressure device for preventing subway tunnel from floating up |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220319569U (en) |
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2023
- 2023-08-15 CN CN202322191896.3U patent/CN220319569U/en active Active
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