Tunnel construction structure underneath passing existing important structure
By setting up multiple abutting curved plates and support rod structures on the top of the tunnel, the cooperation of the support table and the limiting mechanism is used to solve the problem of overall sinking of the tunnel top, achieving convenient maintenance and improved safety.
Patent Information
- Application Number
- CN202411610941.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-12
- Publication Date
- 2025-02-14
AI Technical Summary
During the tunnel construction process, the existing technology is difficult to effectively prevent the overall sinking of the top of the tunnel, resulting in the impact of existing important structures, and the subsequent maintenance is difficult and costly.
Using multiple abutment curved plates and support rod structures, the abutment curved plates are supported by the support rods on the support platform, and the sliding of the support rod is restricted by the limiting mechanism to ensure that the top of the tunnel is shared by multiple arc plates. support.
When settlement occurs at the top of the tunnel, only the abutment curved plate at the settlement will sink, which will facilitate determination of the sinking position and maintenance, reduce maintenance difficulty and cost, and improve the safety inside the tunnel.
Smart Images
Figure CN119434832A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of tunnel construction, and in particular to a tunnel construction structure passing under an existing important structure. Background Art
[0002] With the rapid development of urban construction, the demand for electricity continues to increase, and the construction of power tunnels is increasing. In the process of tunnel construction, it is often necessary to pass under existing important structures, such as buildings, bridges, railways, etc. In order to ensure the structural safety of the structures under the tunnel and the safety of the construction and operation of the power tunnel, a support structure is usually set up in the tunnel to support the tunnel vault, so as to resist the sinking trend of the tunnel vault. In the related technology, an entire arc-shaped vault is usually set at the top of the tunnel to support the top of the tunnel. Therefore, when a small-scale settlement occurs at one part of the tunnel arc, the entire tunnel top will be pressed down, which may cause the overall sinking of the tunnel support structure, which not only has a great impact on the existing important structures, but also makes the subsequent maintenance of the entire support structure difficult and costly. Summary of the invention
[0003] In order to reduce the overall sinking of the support structure during tunnel construction, the present application provides a tunnel construction structure that passes under an existing important structure.
[0004] The present application provides a tunnel construction structure that passes under an existing important structure and adopts the following technical solution: A tunnel construction structure that passes under an existing important structure, comprising a plurality of abutting arc plates arranged on the top of the tunnel, the plurality of abutting arc plates being arranged along the length direction of the top of the tunnel, a connecting assembly for connecting the two adjacent abutting arc plates being arranged between the two, a tunnel foundation being arranged at the bottom of the tunnel, two supporting platforms being arranged on the tunnel foundation, the supporting platforms being respectively located on both sides of the tunnel interior, a plurality of supporting rods for supporting the abutting arc plates being passed through and slidably connected on the supporting platforms, the supporting rods on the two supporting platforms corresponding one to one with the abutting arc plates, and a limiting mechanism for limiting the sliding of the supporting rods on the supporting platforms being arranged on the supporting platforms.
[0005] By adopting the above technical scheme, multiple abutment arc plates can be supported by the support rods on the support platform, and the sliding of the support rods on the support platform can be limited by the limiting mechanism, and the tunnel top can be jointly supported by arranging multiple abutment arc plates, so that when settlement occurs at one place on the tunnel top, only the abutment arc plates corresponding to the settlement place will sink, thereby facilitating the determination of the sinking position of the tunnel top, and also facilitating the adjustment and maintenance of the abutment arc plates at the sinking place, greatly reducing the difficulty and cost of maintenance, and at the same time limiting the sinking range of the abutment arc plates at the sinking place by the connecting components, thereby improving the safety inside the tunnel.
[0006] Optionally, the connecting assembly is placed between the ends of two adjacent abutting arc plates, the connecting assembly includes a plurality of steel wire ropes, the steel wire ropes are fixedly connected between the two adjacent abutting arc plates, the connecting assembly also includes two rubber extension plates fixedly connected between the ends of two adjacent abutting arc plates, and the steel wire ropes are placed between the two rubber extension plates.
[0007] By adopting the above technical solution, the connection between two adjacent abutting arc plates can be achieved through multiple steel wire ropes. At the same time, when one of the abutting arc plates sinks and becomes misaligned with the other abutting arc plates, the abutting arc plates on both sides can be restricted from further sinking by the steel wire ropes under the connection of the steel wire ropes.
[0008] Optionally, the support platform includes a fixed platform and multiple limit platforms, the limit platforms correspond to the support rods one by one, the limit platforms are placed above the fixed platform and fixedly connected to the fixed platform, and the support rods are passed through the limit platforms.
[0009] By adopting the above technical solution, the support platform can be split into multiple limit platforms corresponding to the support rods one by one, and the fixed platform can provide active support for the multiple limit platforms. Therefore, when one of the support rods slides, external force will only be applied to one of the limit platforms, which makes it easy to adjust and maintain the limit platforms.
[0010] Optionally, an annular groove is provided on the upper end surface of the limit platform, and the annular groove is arranged around the support rod. The limit mechanism includes a detection block fixedly connected to the limit annular groove, a mounting plate is fixedly connected to the support rod, and a plurality of detection rods are fixedly connected between the mounting plate and the detection block.
[0011] By adopting the above technical solution, when the tunnel top settles, the support rod will move downward, and the lower end of the support rod will move toward the inside of the detection block and destroy the detection block until the lower end of the support rod abuts against the bottom of the limit ring groove. Then, by daily observation of the detection block, it is possible to intuitively determine whether the support rod has moved, that is, whether the abutting arc plate has settled, and quickly determine at which position the abutting arc plate has settled.
[0012] Optionally, the limiting mechanism also includes a base column fixedly connected to the upper end of the fixed platform, the base column corresponds to the support rod one by one and is coaxially arranged, a plurality of support discs are provided at the bottom ends of the base column and the support rod, and the support rod presses the plurality of support discs onto the base column.
[0013] By adopting the above technical solution, the further settlement of the support rod can be limited by the bottom column and the supporting disc on the bottom column. At the same time, when the support rod sinks, the supporting disc will usually be compressed and deformed. Then, when the support rod is reset, the supporting disc can be taken out from between the support rod and the bottom column, and more supporting discs can be added between the two to raise the support rod, thereby quickly resetting and repairing the abutting arc plate at the settled position.
[0014] Optionally, a supporting arc plate is provided below the abutting arc plate, and the supporting arc plate blocks the gap between two adjacent abutting arc plates. The upper end of the support rod is fixedly connected to the inner arc surface of the abutting arc plate, and the support rod abuts against the supporting arc plate through the abutting arc plate.
[0015] By adopting the above technical solution, the support rod can support the abutting arc plate through the supporting arc plate, and at the same time seal the gap between two adjacent abutting arc plates, thereby reducing the situation where gravel or sediment falls directly from the gap between the abutting arc plates when settlement occurs.
[0016] Optionally, a reinforcing rod is fixedly connected to the upper end of the support rod, the diameter of the reinforcing rod is larger than the diameter of the support rod, the reinforcing rod is fixedly connected to the inner arc surface of the supporting arc plate, and the support rod abuts against the supporting arc plate through the reinforcing rod.
[0017] By adopting the above technical solution, the connection strength between the support rod and the supporting arc plate can be improved by the reinforcing rod, the deformation of the support rod can be reduced, and the pressure of the support rod on the supporting arc plate can be reduced.
[0018] Optionally, the supporting arc plate includes an arc main board and two elastic blocks, the arc main board is located between the two elastic blocks and fixedly connected to the two elastic blocks, and the two elastic blocks close to one end of two adjacent supporting arc plates abut against each other.
[0019] By adopting the above technical solution, elastic blocks can be set up to make the two ends of the arc-shaped support plate have a certain deformation ability. Therefore, when settlement occurs, the elastic blocks will deform to reduce the deformation of the arc-shaped main board, thereby protecting the overall structure of the supporting arc plate.
[0020] In summary, the present application includes at least one of the following beneficial technical effects: 1. When a place on the top of the tunnel sinks, only the abutting curved plate at the sinking place will sink, which makes it easy to determine the sinking position of the top of the tunnel, and also makes it easy to adjust and maintain the abutting curved plate at the sinking place, greatly reducing the maintenance difficulty and maintenance cost. At the same time, the sinking range of the abutting curved plate at the sinking place is limited by the connecting components, thereby improving the safety inside the tunnel; 2. When the tunnel top settles, the support rod will move downward, and the lower end of the support rod will move toward the inside of the detection block and damage the detection block until the lower end of the support rod abuts against the bottom of the limit ring groove. Then, by daily observation of the detection block, it can be intuitively determined whether the support rod has moved, that is, whether the abutting arc plate has settled and at which position the abutting arc plate has settled; 3. The support rod can support the abutting arc plate through the supporting arc plate and seal the gap between two adjacent abutting arc plates, thereby reducing the possibility of gravel or sediment falling directly from the gap between the abutting arc plates when settlement occurs. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 It is a schematic diagram of the structure of the support bar of an embodiment of the present application.
[0022] In the figure, 1. abutting arc plate; 2. connecting assembly; 21. steel wire rope; 22. rubber extension plate; 3. tunnel foundation; 4. supporting rod; 5. limiting mechanism; 51. detection block; 52. supporting disc; 53. detection rod; 54. mounting plate; 55. bottom column; 6. supporting platform; 61. fixing platform; 62. limiting platform; 621. annular groove; 7. supporting arc plate; 71. arc main board; 72. elastic block; 8. reinforcing rod. DETAILED DESCRIPTION
[0023] The following is combined with Figure 1 -Attached Figure 2 , further details of this application are given.
[0024] The embodiment of the present application is: a tunnel construction structure passing under an existing important structure, referring to Figure 1 and Figure 2 , including a tunnel foundation 3 built at the bottom of the tunnel, which can be a concrete foundation in the prior art. A plurality of abutting arc plates 1 are arranged at the top of the tunnel, and the plurality of abutting arc plates 1 are all placed above the tunnel foundation 3. The plurality of abutting arc plates 1 are arranged in sequence along the length direction of the inner arc surface of the top of the tunnel. A connecting component 2 for connecting the two adjacent abutting arc plates 1 is provided between them.
[0025] The connection assembly 2 is placed between the ends of two adjacent abutting curved plates 1, and the connection assembly 2 includes a plurality of steel wires 21, and the steel wires 21 are fixedly connected between the two adjacent abutting curved plates 1. In order to reduce the occurrence of debris or sediment entering between the plurality of steel wires 21, the connection assembly 2 also includes two rubber extension plates 22 fixedly connected between the ends of the two adjacent abutting curved plates 1, and the plurality of steel wires 21 are placed between the two rubber extension plates 22, and the rubber plates seal the area between the ends of the two adjacent abutting curved plates 1.
[0026] Therefore, when one of the abutting curved plates 1 sinks and becomes misaligned with the other abutting curved plates 1 , the abutting curved plates 1 on both sides thereof can be restricted from further sinking by the steel wire ropes 21 under the connection of the steel wire ropes 21 .
[0027] A supporting arc plate 7 is provided below the abutting arc plate 1, and the number of the supporting arc plates 7 is one less than the number of the abutting arc plates 1, and the supporting arc plates 7 block the gap between two adjacent abutting arc plates 1. At the same time, in order to keep the main body of the supporting arc plate 7 in a state of not being deformed during the settlement process, the supporting arc plate 7 includes an arc main plate 71 and two elastic blocks 72, the arc main plate 71 is located between the two elastic blocks 72 and is fixedly connected to the two elastic blocks 72, and the two elastic blocks 72 close to one end of the two adjacent supporting arc plates 7 abut against each other.
[0028] Two support platforms 6 are provided on the tunnel foundation 3, and the support platforms 6 are respectively located on both sides of the tunnel. A plurality of support rods 4 for supporting the abutting curved plate 1 are penetrated and slidably connected on the support platforms 6. The support platforms 6 include a fixed platform 61 and a plurality of limit platforms 62. The fixed platform 61 is fixedly connected to the tunnel foundation 3, and the limit platforms 62 correspond to the support rods 4 one by one. The limit platforms 62 are placed above the fixed platform 61 and fixedly connected to the fixed platform 61, and the support rods 4 are penetrated and slidably connected to the limit platforms 62.
[0029] The upper end of the support rod 4 is fixedly connected with a reinforcing rod 8, which is coaxially arranged with the support rod 4 and has a diameter greater than that of the support rod 4. One end of the reinforcing rod 8 away from the support rod 4 is fixedly connected to the inner arc surface of the abutting arc plate 1, so that the support rod 4 supports the abutting arc plate 1 through the reinforcing rod 8 and the supporting arc plate 7. The support rods 4 on the two support platforms 6 correspond to the abutting arc plates 1 one by one, and the support platforms 6 are provided with a limiting mechanism 5 for limiting the sliding of the support rods 4 on the support platforms 6.
[0030] An annular groove 621 is provided on the upper end surface of the limiting platform 62, and the annular groove 621 is arranged around the support rod 4. The limiting mechanism 5 includes a detection block 51 fixedly connected to the limiting annular groove 621, and the pressure resistance of the detection block 51 is less than the pressure resistance of the limiting platform 62. A mounting plate 54 is fixedly connected to the support rod 4, and the support rod 4 is penetrated on the mounting plate 54 and is coaxially arranged with the mounting plate 54. A plurality of detection rods 53 are fixedly connected between the mounting plate 54 and the detection block 51, and the detection rods 53 are equidistantly arranged around the axis of the mounting plate 54. The limiting mechanism 5 also includes a bottom column 55 fixedly connected to the upper end of the fixed platform 61, and the bottom column 55 corresponds to the support rod 4 one by one and is coaxially arranged, and there is a certain distance between the bottom column 55 and the lower end of the support rod 4. A plurality of support discs 52 are provided at the bottom end of the bottom column 55 and the support rod 4, and the plurality of support discs 52 are superimposed and coaxially arranged with the bottom column 55, and the support rod 4 presses the plurality of support discs 52 onto the bottom column 55.
[0031] The implementation principle of the embodiment of the present application is as follows: the structure supports a plurality of abutting arc plates 1 through the support rods 4 on the support platform 6, so that when a place on the top of the tunnel sinks, only the abutting arc plates 1 corresponding to the sinking place will sink, so that the detection rod 53 where the support rod 4 is located will apply external force to the detection block 51, so that the structure of the detection block 51 is destroyed, and then the support rod 4 can be further sunk by the bottom column 55 and the support disc 52 on the bottom column 55. At the same time, when the support rod 4 sinks, the support disc 52 is usually compressed and deformed to move the support rod 4 downward until the lower end of the support rod 4 abuts against the bottom of the limiting ring groove 621. Therefore, in daily maintenance, by observing the structural condition of the surface of the detection block 51, it can be intuitively obtained whether the support rod 4 is displaced, that is, whether the abutting arc plates 1 have sunk, and it can be determined at which position the abutting arc plates 1 have collapsed. When the support rod 4 is subsequently reset, the support disc 52 can be taken out from between the support rod 4 and the base column 55, and more support discs 52 can be added between the two to raise the support rod 4.
[0032] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A tunnel construction structure passing under an existing important structure, characterized in that: The invention comprises a plurality of abutting arc plates (1) arranged on the top of a tunnel, wherein the plurality of abutting arc plates (1) are arranged along the length direction of the top of the tunnel, a connecting assembly (2) for connecting the two adjacent abutting arc plates (1) is arranged between the two adjacent abutting arc plates (1), a tunnel foundation (3) is arranged at the bottom of the tunnel, two support platforms (6) are arranged on the tunnel foundation (3), the support platforms (6) are respectively located on two sides of the tunnel, a plurality of support rods (4) for supporting the abutting arc plates (1) are penetrated and slidably connected on the support platforms (6), the support rods (4) on the two support platforms (6) correspond to the abutting arc plates (1) one by one, and a limiting mechanism (5) for limiting the support rods (4) from sliding on the support platforms (6) is provided on the support platforms (6).
2. A tunnel construction structure for passing under an existing important structure according to claim 1, characterized in that: The connection assembly (2) is placed between the ends of two adjacent abutting arc plates (1), the connection assembly (2) comprises a plurality of steel wire ropes (21), the steel wire ropes (21) are fixedly connected between the two adjacent abutting arc plates (1), the connection assembly (2) further comprises two rubber extension plates (22) fixedly connected between the ends of the two adjacent abutting arc plates (1), the steel wire ropes (21) are placed between the two rubber extension plates (22).
3. The tunnel construction structure for passing under an existing important structure according to claim 1, characterized in that: The support platform (6) comprises a fixed platform (61) and a plurality of limit platforms (62), wherein the limit platforms (62) correspond to the support rods (4) one by one, the limit platforms (62) are placed above the fixed platform (61) and are fixedly connected to the fixed platform (61), and the support rods (4) are passed through the limit platforms (62).
4. A tunnel construction structure for passing under an existing important structure according to claim 3, characterized in that: An annular groove (621) is provided on the upper end surface of the limit platform (62), and the annular groove (621) is arranged around the support rod (4). The limit mechanism (5) comprises a detection block (51) fixedly connected to the limit annular groove (621), a mounting plate (54) fixedly connected to the support rod (4), and a plurality of detection rods (53) fixedly connected between the mounting plate (54) and the detection block (51).
5. A tunnel construction structure for passing under an existing important structure according to claim 4, characterized in that: The limiting mechanism (5) further comprises a bottom column (55) fixedly connected to the upper end of the fixed platform (61); the bottom column (55) corresponds to the support rod (4) one by one and is coaxially arranged; a plurality of support discs (52) are arranged at the bottom ends of the bottom column (55) and the support rod (4); the support rod (4) presses the plurality of support discs (52) onto the bottom column (55).
6. The tunnel construction structure for passing under an existing important structure according to claim 1, characterized in that: A supporting arc plate (7) is provided below the abutting arc plate (1), and the supporting arc plate (7) blocks the gap between two adjacent abutting arc plates (1). The upper end of the supporting rod (4) is fixedly connected to the inner arc surface of the abutting arc plate (1), and the supporting rod (4) abuts against the supporting arc plate (7) through the abutting arc plate (1).
7. A tunnel construction structure for passing under an existing important structure according to claim 6, characterized in that: The upper end of the support rod (4) is fixedly connected to a reinforcing rod (8), the diameter of the reinforcing rod (8) being larger than the diameter of the support rod (4), the reinforcing rod (8) being fixedly connected to the inner arc surface of the support arc plate (7), and the support rod (4) abuts against the support arc plate (7) via the reinforcing rod (8).
8. The tunnel construction structure for passing under an existing important structure according to claim 6, characterized in that: The supporting arc plate (7) comprises an arc main plate (71) and two elastic blocks (72); the arc main plate (71) is located between the two elastic blocks (72) and is fixedly connected to the two elastic blocks (72); and the two elastic blocks (72) close to one end of two adjacent supporting arc plates (7) abut against each other.