Shield tunnel reinforcing structure

Abstract

The utility model discloses a shield tunnel reinforcing structure, which relates to the technical field of tunnel reinforcement, and comprises a bottom plate, the upper part of the bottom plate is provided with a mounting plate, the bottom surface of the mounting plate is fixedly connected with a fixed disc, the outer surface of the fixed disc is hinged with brackets in an annular array, and the lower end of each bracket is connected with a foot pad. Through the arrangement of the driving disc, the driving disc can push the pipe barrel to be inserted into the fiber layer through the driving plate and the connecting block, and then viscous materials are poured into gaps among the mortar layer, the fiber layer and the steel plate layer through a follow-up pouring device, so that the mortar layer, the fiber layer and the steel plate layer are mutually adhered; the pressure generated by the tunnel is dispersed into the mortar layer, the fiber layer and the steel plate layer, the reinforcing effect and the reinforcing quality of the tunnel are greatly improved, the pipe barrel can conduct secondary supporting and blocking on tunnel reinforcing components through the extrusion plate, the adhesion effect between components such as the mortar layer and the like in follow-up pouring of an adhesive material is facilitated, and the construction efficiency is improved. And after composite forming, the multiple components are located in the tunnel soil body, so that the tunnel soil body can be reinforced, and the risk that the soil body in the tunnel collapses is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel reinforcement, in particular to a shield tunnel reinforcement structure. Background Art

[0002] The shield tunnel construction method refers to the use of a shield machine to control the excavation face and surrounding soil to prevent collapse and instability, to carry out tunnel excavation and slag removal, and to assemble segments inside the machine to form a lining, thereby building a tunnel without disturbing the surrounding soil.

[0003] The structure of a shield tunnel is a typical assembled structure, which uses high-strength bolts to connect multiple prefabricated concrete blocks vertically and horizontally to form a load-bearing structure. However, changes in underground conditions, groundwater levels, and the soil above the tunnel can easily affect the load on the shield structure, and the soil in the shield tunnel often needs to be reinforced.

[0004] In the reinforcement construction of tunnel soil, refer to patent document CN214273661 U. The device proposed in the patent document has a cross frame design that makes the entire device stronger, the design of the rollers and the tripod allows the device to move and stop freely, and the design of the protection rod can protect the support from breaking due to excessive pressure. However, in the actual construction of tunnel soil reinforcement, although the device can realize the reinforcement pouring construction of the tunnel soil, it is inconvenient to monitor the stress of the reinforcement components in real time during pouring, resulting in the reinforcement effect after pouring being different from the actual expectation, and the reinforcement effect of the tunnel soil only by pouring is slightly improved, so the reinforcement quality needs to be improved; for this reason, we provide a shield tunnel reinforcement structure to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to make up for the deficiencies of the prior art and to provide a shield tunnel reinforcement structure. The tunnel support components can be secondary supported and reinforced through a reinforcement mechanism, and then adhesive materials are poured between multiple connecting layers through a subsequent pouring device, so that the reinforcement components are compositely formed, thereby greatly improving the reinforcement effect of the soil around the tunnel and increasing the reinforcement quality of the reinforcement structure.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a shield tunnel reinforcement structure, comprising a base plate, a mounting plate is provided on the upper part of the base plate, the bottom surface of the mounting plate is fixedly connected to a fixing plate, and the outer surface of the fixing plate is hinged with a ring array of brackets, the lower end of each of the brackets is installed and connected to the mounting plate, and the lower end of each of the brackets is installed and connected to a foot pad.

[0007] A reinforcement mechanism is provided on the upper surface of the mounting plate, which includes two transmission discs located on the upper part of the mounting plate, and a transmission plate in an annular array hinged to the outer surface of the transmission disc, and each group of transmission plates is hinged to a connecting block at one end away from the transmission disc, and a tube is fixedly connected to the outer surface of the connecting block.

[0008] The upper surface of the bottom plate is provided with an adhesion mechanism, which includes a protection frame located on the upper surface of the bottom plate, and a mortar layer, a fiber layer and a steel plate layer in an annular array are arranged inside the protection frame.

[0009] Furthermore, a double-rod hydraulic cylinder is installed and connected to the upper surface of the mounting plate, and the two output ends of the double-rod hydraulic cylinder are fixedly connected to the side surfaces of the two transmission disks that are close to each other. The outer surface of each of the tubes is provided with an input hole and an annular array of output holes. By setting up the double-rod hydraulic cylinder, the two output ends of the double-rod hydraulic cylinder both push the transmission disk to perform a contraction movement, thereby driving the transmission component to push the tube into the interior of the fiber layer, and then the overall structure is bonded through a subsequent perfusion device, so that the reinforcement device is compositely formed.

[0010] Furthermore, each group of transmission plates is slidably connected to a side surface that is close to each other with a curved sliding rod, and the outer surface of the curved sliding rod is sleeved with a telescopic spring. By providing the curved sliding rod, the transmission plate can be better limited when the transmission plate moves, thereby greatly improving the stability of the transmission plate, facilitating secondary support of the reinforced body, and facilitating subsequent infusion operations.

[0011] Furthermore, a hollow layer is provided between the side surfaces where each mortar layer and the fiber layer are close to each other, each fiber layer is fitted with each steel plate layer, and a connecting hole is provided at the connection between each mortar layer, fiber layer and steel plate layer. By providing the hollow layer, subsequent pouring materials can be better allowed to enter the interior of the reinforcement body, thereby bonding multiple layer components, thereby improving the reinforcement effect of the shield tunnel entrance.

[0012] Furthermore, the inner wall and outer surface of the protective frame are respectively provided with connecting columns and connecting plates in a circular array, and the connecting columns and connecting plates are located at the connection between the mortar layers. Two symmetrical bolts are provided on the outside of each connecting plate, and the bolts penetrate the connecting plate, steel plate layer, fiber layer and mortar layer in sequence and are connected to the installation position of the connecting column. By setting the connecting columns, it is convenient for the staff to first embed the connecting columns into the tunnel, and then fix the mortar layer, fiber layer and steel plate layer to the inner wall of the tunnel entrance through bolts and connecting plates, so as to reinforce and support the tunnel.

[0013] Furthermore, a ring-shaped array of pressure sensors is installed on the inner wall of the protective frame, and the bottom surface of each foot pad is installed and connected to the upper surface of the base plate via a pin. By setting up the pressure sensor, it is convenient to monitor the stress distribution of the reinforcement component in real time, and the connection between the foot pad and the base plate can facilitate the staff to install and place the reinforcement mechanism, which is convenient for the subsequent reinforcement support and pouring operations of the tunnel reinforcement components.

[0014] Furthermore, the outer surface of each tube is fixedly connected with an extrusion plate and a sealing ring. By providing the extrusion plate, it is convenient to insert the tube into the fiber layer to provide secondary support for the reinforcement component through the extrusion plate, thereby facilitating the reinforcement effect of subsequent composite molding.

[0015] Compared with the existing technology, the shield tunnel reinforcement structure has the following beneficial effects:

[0016] 1. The utility model provides a transmission disk, which can push the tube into the fiber layer through the transmission plate and the connecting block, and then injects sticky materials into the gaps between the mortar layer, the fiber layer and the steel plate layer through the subsequent injection device, so that they are mutually adhered, and then disperses the pressure generated by the tunnel to the mortar layer, the fiber layer and the steel plate layer, which greatly improves the reinforcement effect and reinforcement quality of the soil in the tunnel. The tube can provide secondary support and blocking for the tunnel reinforcement components through the extrusion plate, which is convenient for the subsequent injection of sticky materials on the adhesion effect between the mortar layer and other components. After composite molding, multiple components are all inside the tunnel soil, so that the tunnel soil can be reinforced, and the risk of soil collapse in the tunnel can be effectively avoided.

[0017] 2. The utility model provides a double-rod hydraulic cylinder, and the two output ends of the double-rod hydraulic cylinder drive the two transmission plates to perform a contraction movement, thereby facilitating the automatic operation of the overall component, and the hydraulic thrust of the double-rod hydraulic cylinder can better provide secondary support to the reinforcement component through the extrusion plate. By providing a connecting hole, it is convenient to insert the tube into the fiber layer through the connecting hole, and then inject the adhesive material into the hollow layer through the input hole and the output hole, so that the mortar layer, the hollow layer, the fiber layer and the steel plate layer are adhered, thereby improving the reinforcement effect and reinforcement quality of the soil in the tunnel. By providing a connecting column, the staff first pre-buries the connecting column to the soil position in the tunnel, and then fixes the reinforcement component in the tunnel soil by bolts, and can splice multiple reinforcement components. By providing a pressure sensor, it is convenient to detect the stress of the reinforcement component in real time, and it is convenient for the staff to subsequently inject the adhesive material. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the front view of the three-dimensional structure of the utility model;

[0019] Figure 2 It is a front cross-sectional view of the reinforcement mechanism of the utility model;

[0020] Figure 3 It is an exploded view of the three-dimensional structure of the glue injection component of the utility model;

[0021] Figure 4 It is an enlarged schematic diagram of point A of the present utility model.

[0022] In the figure: 1. bottom plate; 2. foot pad; 3. bracket; 4. fixing plate; 5. mounting plate; 6. reinforcement mechanism; 601. double-rod hydraulic cylinder; 602. transmission plate; 603. transmission plate; 604. connecting block; 605. tube; 606. input hole; 607. output hole; 608. curved slide bar; 609. telescopic spring; 6010. extrusion plate; 6011. sealing ring; 7. adhesion mechanism; 701. protection frame; 702. mortar layer; 703. hollow layer; 704. fiber layer; 705. steel plate layer; 706. connecting hole; 8. connecting column; 9. connecting plate; 10. bolt; 11. pressure sensor. DETAILED DESCRIPTION

[0023] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0024] As described in the background technology, although the device can realize the reinforcement pouring construction of the tunnel, it is inconvenient to monitor the stress of the reinforcement components in real time during pouring, resulting in the reinforcement effect after pouring being different from the actual expectation, and the reinforcement effect of the tunnel only through pouring is slightly improved, so the reinforcement quality needs to be improved. For this reason, this embodiment provides a shield tunnel reinforcement structure, which can perform secondary support reinforcement on the tunnel support components through a reinforcement mechanism, and then use a subsequent pouring device to pour adhesive materials between multiple connecting layers, so as to composite the reinforcement components, thereby greatly improving the reinforcement effect of the tunnel and increasing the reinforcement quality of the reinforcement structure.

[0025] See also Figure 1 - Figure 4 This embodiment proposes a shield tunnel reinforcement structure, including a base plate 1, a mounting plate 5 is provided on the upper part of the base plate 1, a fixing plate 4 is fixedly connected to the bottom surface of the mounting plate 5, and a ring array of brackets 3 is hinged on the outer surface of the fixing plate 4, and a foot pad 2 is installed and connected to the lower end of each bracket 3.

[0026] refer to Figure 1The setting of the bracket 3 can facilitate the installation and disassembly of the reinforcement mechanism 6, so that the reinforcement mechanism 6 can be stably placed in the center of the tunnel, and then the tunnel reinforcement components can be installed and operated. The setting of the foot pad 2, the bracket 3 and the fixing plate 4 can only install and support the reinforcement mechanism 6, and different fixing methods can be selected to install and use the reinforcement mechanism 6, which is highly practical.

[0027] The inner wall of the protective frame 701 is installed with a ring array of pressure sensors 11. The bottom surface of each foot pad 2 is installed and connected to the upper surface of the base plate 1 through a pin. By setting the pressure sensor 11, the stress data can be monitored in real time when the tunnel reinforcement components are installed, which facilitates the pouring operation when the reinforcement is maximum, thereby improving the reinforcement effect of the composite molding.

[0028] A reinforcement mechanism 6 is provided on the upper surface of the mounting plate 5, and the reinforcement mechanism 6 includes two transmission disks 602 located on the upper part of the mounting plate 5, and a ring-shaped array of transmission plates 603 hinged to the outer surface of the transmission disk 602, and each group of transmission plates 603 is hinged to a connecting block 604 at one end away from the transmission disk 602, and a tube 605 is fixedly connected to the outer surface of the connecting block 604.

[0029] refer to Figure 2 The transmission plate 603 and the connecting block 604 are pushed by the transmission disc 602 to insert the tube 605 through the connecting hole 706 between the hollow layer 703 and other multiple layers, and an extrusion plate 6010 is fixed on the surface of the tube 605, which can provide secondary support for the reinforcement component during insertion, and can also limit the tube 605 to avoid excessive penetration and cause extrusion damage to the tube 605.

[0030] A double-rod hydraulic cylinder 601 is installed and connected to the upper surface of the mounting plate 5, and the two output ends of the double-rod hydraulic cylinder 601 are fixedly connected to the side of the two transmission plates 602 close to each other. The outer surface of each tube 605 is provided with an input hole 606 and a circular array of output holes 607.

[0031] By setting the input hole 606 and the output hole 607, it is convenient for the staff to input the viscous material through the input hole 606 and output it through the output hole 607 through the pouring device, and output it to the mortar layer 702, the hollow layer 703, the fiber layer 704 and the steel plate layer 705 through the output hole 607, and then perform multi-layer adhesion through the gaps therebetween, so as to facilitate the dispersed support of the tunnel pressure.

[0032] A curved slide bar 608 is slidably connected to one side of each group of transmission plates 603 that are close to each other, and a telescopic spring 609 is sleeved on the outer surface of the curved slide bar 608. By setting the curved slide bar 608, it is possible to perform position limiting and blocking when the transmission plate 603 contracts. The setting of the telescopic spring 609 can better enable the transmission plate 603 to contract, thereby preventing the transmission plate 603 from shaking and deflecting during the contraction movement, which affects the construction of the tunnel reinforcement components.

[0033] The outer surface of each tube 605 is fixedly connected with an extrusion plate 6010 and a sealing ring 6011. By setting the extrusion plate 6010, the reinforcement component can be supported secondary when the tube 605 moves. The setting of the sealing ring 6011 facilitates the sealing of the gap between the connecting hole 706 and the tube 605 to prevent the leakage of sticky materials and affect the reinforcement quality.

[0034] An adhesion mechanism 7 is provided on the upper surface of the base plate 1, and the adhesion mechanism 7 includes a protective frame 701 located on the upper surface of the base plate 1, and a mortar layer 702, a fiber layer 704 and a steel plate layer 705 in an annular array are provided inside the protective frame 701. By setting the protective frame 701, it is convenient to splice the mortar layer 702, the fiber layer 704 and the steel plate layer 705, and it can also limit the viscous material when pouring, avoid leakage of the viscous material, and improve the effect of the pouring operation.

[0035] A hollow layer 703 is provided between the side surfaces of each mortar layer 702 and the fiber layer 704 that are close to each other, each fiber layer 704 is fitted with each steel plate layer 705, and connection holes 706 are provided at the connections between each mortar layer 702, fiber layer 704 and steel plate layer 705.

[0036] By setting the hollow layer 703, it is convenient to pour all the viscous material into the hollow layer 703, and then adhere them through the gaps between the mortar layer 702, the fiber layer 704 and the steel plate layer 705. The size of the connecting hole 706 is adapted to the size of the tube 605, thereby improving the sealing effect.

[0037] The inner wall and outer surface of the protective frame 701 are respectively provided with a circular array of connecting columns 8 and connecting plates 9, and the connecting columns 8 and connecting plates 9 are located at the connection between the mortar layers 702. Two symmetrical bolts 10 are provided on the outside of each connecting plate 9, and the bolts 10 pass through the connecting plate 9, the steel plate layer 705, the fiber layer 704 and the mortar layer 702 in sequence and are connected to the installation position of the connecting column 8.

[0038] By setting the connecting column 8, it is convenient to splice the mortar layer 702, the fiber layer 704 and the steel plate layer 705 through the bolts 10 and the connecting plate 9 and fix them on the soil inside the tunnel, thereby performing the first step of installing the entire device, which is convenient for subsequent pouring operations.

[0039] Working principle: The staff pre-buries the connecting column 8 on the inner wall of the tunnel, and then uses bolts 10 and connecting plates 9 to splice the mortar layer 702, fiber layer 704 and steel plate layer 705 on the connecting column 8 and fix them on the inner wall of the tunnel, and penetrate into the interior of the tunnel soil, which can not only support and reinforce the tunnel soil, but also reinforce and support the tunnel entrance, thereby realizing the first step of installation of the reinforcement components. Then the staff installs the mounting plate 5 to the predetermined position through the foot pad 2, the bracket 3 and the fixing plate 4, and then installs the double-rod hydraulic cylinder 601 to the upper surface of the mounting plate 5, and aligns the pipe 605 with the connecting hole 706 by adjusting the height of the mounting plate 5, and then starts the double-rod hydraulic cylinder 601. The two output ends of the double-rod hydraulic cylinder 601 simultaneously pull the two transmission plates 602, and the transmission plate 602 drives the connecting block 604 to move horizontally through the transmission plate 603, and then pushes the connecting block 604 through the connecting block 604. The movable tube 605 is inserted into the mortar layer 702, the hollow layer 703, the fiber layer 704 and the steel plate layer 705 through the connecting hole 706. During the insertion, the tube 605 can be limited and blocked by the extrusion plate 6010, and the overflowing driving force can also be used to provide secondary support to the adhesion mechanism 7. The second step of reinforcement operation is completed. At this time, the staff uses the pouring device to transport the viscous material into the tube 605 through the input hole 606, and then output it to the mortar layer 702, the hollow layer 703, the fiber layer 704 and the steel plate layer 705 through the output hole 607, so that they are adhered and compositely formed, thereby improving the reinforcement of the shield tunnel entrance and the soil in the tunnel. During the reinforcement process, the pressure sensor 11 monitors the stress distribution of the reinforcement plate in real time, effectively improving the reinforcement efficiency of the reinforcement structure, increasing the reinforcement quality of the reinforcement structure, thereby greatly improving the reinforcement quality of the soil around the tunnel, and avoiding the risk of collapse of the soil around the tunnel.

Claims

1. A shield tunnel reinforcement structure, comprising a bottom plate (1), characterized in that: A mounting plate (5) is provided on the upper part of the base plate (1), a fixing plate (4) is fixedly connected to the bottom surface of the mounting plate (5), and a ring-shaped array of brackets (3) are hingedly connected to the outer surface of the fixing plate (4), and a foot pad (2) is installed and connected to the lower end of each bracket (3); The upper surface of the mounting plate (5) is provided with a reinforcement mechanism (6), the reinforcement mechanism (6) comprising two transmission discs (602) located on the upper part of the mounting plate (5), and a ring-shaped array of transmission plates (603) hingedly connected to the outer surface of the transmission disc (602), each group of the transmission plates (603) is hingedly connected to an end of the transmission disc (602) away from the transmission disc (602), and the outer surface of the connection block (604) is fixedly connected to a tube (605); The upper surface of the base plate (1) is provided with an adhesive mechanism (7), the adhesive mechanism (7) comprises a protective frame (701) located on the upper surface of the base plate (1), and the interior of the protective frame (701) is provided with a mortar layer (702), a fiber layer (704) and a steel plate layer (705) in an annular array.

2. A shield tunnel reinforcement structure according to claim 1, characterized in that: A double-rod hydraulic cylinder (601) is mounted and connected to the upper surface of the mounting plate (5), and two output ends of the double-rod hydraulic cylinder (601) are fixedly connected to the side surfaces of the two transmission discs (602) close to each other, and an input hole (606) and a ring-shaped array of output holes (607) are provided on the outer surface of each of the tubes (605).

3. A shield tunnel reinforcement structure according to claim 1, characterized in that: A side surface of each group of transmission plates (603) close to each other is slidably connected with a curved sliding rod (608), and a telescopic spring (609) is sleeved on the outer surface of the curved sliding rod (608).

4. The shield tunnel reinforcement structure according to claim 1, characterized in that: A hollow layer (703) is provided between the side surfaces of each mortar layer (702) and the fiber layer (704) that are close to each other, each fiber layer (704) is fitted with each steel plate layer (705), and a connection hole (706) is provided at the connection between each mortar layer (702), fiber layer (704) and steel plate layer (705).

5. A shield tunnel reinforcement structure according to claim 4, characterized in that: The inner wall and outer surface of the protective frame (701) are respectively provided with a circular array of connecting columns (8) and connecting plates (9), and the connecting columns (8) and connecting plates (9) are located at the connection between the mortar layers (702). Two symmetrical bolts (10) are provided on the outside of each connecting plate (9), and the bolts (10) pass through the connecting plate (9), the steel plate layer (705), the fiber layer (704) and the mortar layer (702) in sequence and are connected to the installation position of the connecting column (8).

6. The shield tunnel reinforcement structure according to claim 1, characterized in that: An annular array of pressure sensors (11) is installed and connected to the inner wall of the protection frame (701), and the bottom surface of each foot pad (2) is installed and connected to the upper surface of the base plate (1) via a pin.

7. The shield tunnel reinforcement structure according to claim 1, characterized in that: The outer surface of each of the tubes (605) is fixedly connected with an extrusion plate (6010) and a sealing ring (6011).

Images