Fabricated damping and energy dissipation structure between tunnel linings

Abstract

The utility model discloses an assembly type shock absorption and energy dissipation structure between tunnel linings, which belongs to the technical field of tunnel and underground engineering and comprises an assembly type shock absorption structure and an assembly type shock absorption and energy dissipation structure arranged in the assembly type shock absorption structure. The assembly type damping structure is sequentially provided with a primary support, a waterproof layer, an assembly type damping and energy dissipation structure and a secondary lining from inside to outside, and the assembly type damping and energy dissipation structure is formed by combining foam concrete, rubber materials and crossed viscous dampers. According to the assembly type shock absorption and energy dissipation structure between the tunnel linings, when large compression occurs, no obvious extra pressure is generated on a secondary lining of a tunnel compression area, and therefore the assembly type shock absorption and energy dissipation structure between the tunnel linings can adapt to the large fault dislocation amount, meanwhile, corresponding rotation, deformation and absorption can be conducted according to corresponding vibration, and energy released by corresponding disasters is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of tunnel and underground engineering technology, specifically relating to a prefabricated vibration damping and energy dissipation structure for tunnel lining. Background Technology

[0002] With the in-depth implementation of my country's "Belt and Road" initiative and the Western Development Strategy, significant progress has been made in the expansion of transportation networks, which are gradually extending to the western regions. In particular, the construction of large-scale transportation trunk lines to inland and border areas has led to a rapid increase in the number of tunnel engineering projects.

[0003] However, western my country is characterized by rugged mountains and complex geological conditions, with many areas being highly seismically active. Numerous tunnels traverse fault zones in these high-intensity areas. Under seismic activity or when active faults shift, tunnels are prone to lining damage, water leakage, and track bed failure, thus affecting their normal use. Among these issues, lining damage is one of the primary causes of tunnel defects.

[0004] When a geological disaster occurs, there will be an interaction between the tunnel lining structure and the surrounding rock. The lack of a damping structure between the tunnel linings will cause structural damage to the tunnel lining. Utility Model Content

[0005] The purpose of this utility model is to provide a prefabricated vibration damping and energy dissipation structure between tunnel linings to solve the problem mentioned in the background art that when geological disasters occur, there will be interaction between the tunnel lining structure and the surrounding rock, and the lack of a vibration damping structure between the tunnel linings will lead to structural damage to the tunnel lining.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a prefabricated vibration damping and energy dissipation structure for tunnel lining, comprising a prefabricated vibration damping structure and a prefabricated vibration damping and energy dissipation structure disposed within the prefabricated vibration damping structure. The prefabricated vibration damping structure is provided with an initial support, a waterproof layer, a prefabricated vibration damping and energy dissipation structure and a secondary lining in sequence from the inside out. The prefabricated vibration damping and energy dissipation structure is composed of foamed concrete, rubber-like materials, and cross-type viscous dampers.

[0007] In a further embodiment, the foamed concrete has a porous structure, and rubber-like materials are disposed on both sides of the foamed concrete. The rubber-like materials consist of connecting plate one and connecting plate two.

[0008] In a further embodiment, one side of the connecting plate one is provided with an arc-shaped groove, and multiple suction cups are regularly arranged on one side of the outer wall of the connecting plate two.

[0009] In a further embodiment, multiple concrete interfaces and damper rotation interfaces are provided between the foamed concrete and the connecting plate 2, and the cross-type viscous damper is installed between the concrete interfaces and the damper rotation interfaces.

[0010] In a further embodiment, a steel plate is installed inside the foamed concrete, and the cross-type viscous damper is fixed to the steel plate.

[0011] In a further embodiment, the waterproof layer is provided with expansion joints for drainage.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] This prefabricated vibration damping and energy dissipation structure between tunnel linings can filter and cancel out seismic waves of a certain frequency band when earthquakes occur, as the seismic waves are reflected and scattered in different directions through its internal holes. When active faults move and compress the tunnel, causing the filling material in the pressure zone of the buffer layer to be compressed and destroyed, compared to traditional rubber or asphalt concrete filling materials that become increasingly compacted after being compressed by a small amount, the material used in this invention can undergo greater compression without generating significant additional pressure on the secondary lining of the tunnel pressure zone, thus adapting to larger fault displacements.

[0014] The prefabricated vibration reduction and energy dissipation structure has a micro-rotating cross-type viscous damper inside. This cross-type viscous damper can rotate slightly in one direction and deform slightly in different directions. When an earthquake or active fault displacement occurs, the cross-type viscous damper can rotate and deform accordingly according to the corresponding vibration, absorb and reduce the energy released by the corresponding disaster, thereby reducing the effect.

[0015] The prefabricated vibration damping and energy dissipation structure is also equipped with waterproof rubber materials on both sides. The side in contact with the secondary lining is slightly arc-shaped, which can fit more tightly with the secondary lining. The side in contact with the waterproof layer is thin and rectangular with regularly distributed suction cups attached to the outside, which can better fit with the waterproof layer. This makes the entire component more tightly arranged with the waterproof layer and the secondary lining. When an earthquake or active fault displacement occurs, these two rubber parts can also deform to a certain extent and absorb energy. At the same time, they can further enhance the waterproofing ability to prevent a large amount of water from gushing out when the above-mentioned disasters occur.

[0016] Prefabricated vibration damping and energy dissipation structures are manufactured in advance in a prefabrication plant. Compared with traditional asphalt concrete pouring in tunnels, this ensures that the structural materials meet the required performance. Furthermore, the assembly of prefabricated components is simpler than traditional on-site pouring, has less impact on the tunnel construction environment, and can be assembled inside the tunnel, meeting the quality control requirements for construction in the narrow space of the tunnel. This prefabricated vibration damping and energy dissipation structure between the tunnel lining can prevent significant additional pressure on the secondary lining in the compression zone of the tunnel during large compressions, thus accommodating large fault dislocations. At the same time, it can rotate and deform accordingly according to the corresponding vibrations, absorbing and reducing the energy released by the corresponding disaster. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the assembled shock-absorbing structure of this utility model;

[0020] Figure 3 This is a cross-sectional view of the assembled vibration damping and energy dissipation structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the foamed concrete of this utility model;

[0022] Figure 5 This is a layout diagram of the prefabricated vibration damping and energy dissipation structure of this utility model;

[0023] Figure 6 This is a schematic diagram of the connection between the cross-type viscous damper of this utility model and foamed concrete.

[0024] Figure 7 This is a schematic diagram of the connection between the rubber material and foamed concrete of this utility model.

[0025] In the diagram: 1. Initial support; 2. Waterproof layer; 3. Prefabricated vibration damping and energy dissipation structure; 4. Secondary lining; 5. Expansion joint; 6. Foamed concrete; 7. Connecting plate one; 8. Connecting plate two; 9. Cross-type viscous damper; 10. Steel plate; 11. Connecting key. Detailed Implementation

[0026] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0027] Unless otherwise defined, the directions mentioned herein, such as up, down, left, right, front, back, inside, and outside, are based on the directions shown in the figures of this utility model, and are explained here together.

[0028] Please see Figure 1-7 This utility model provides a prefabricated vibration damping and energy dissipation structure for tunnel lining, including a prefabricated vibration damping structure and a prefabricated vibration damping and energy dissipation structure 3 installed within the prefabricated vibration damping structure. The prefabricated vibration damping structure is located in a high-intensity seismic zone or an active fault section, and extends a certain length to both sides of the section as a transition zone. The prefabricated vibration damping structure is provided with an initial support 1, a waterproof layer 2, a prefabricated vibration damping and energy dissipation structure 3 and a secondary lining 4 in sequence from the inside to the outside. An expansion joint 5 is provided on the waterproof layer 2. The prefabricated vibration damping and energy dissipation structure 3 is composed of foamed concrete 6, rubber materials, and cross-type viscous dampers 9, and has an assembly function.

[0029] The foamed concrete 6 has a porous structure, and rubber-like materials are placed on both sides of the foamed concrete 6. The rubber-like materials consist of connecting plate 7 and connecting plate 8. Multiple connecting keys 11 are fixed between connecting plate 7, connecting plate 8 and foamed concrete 6, thereby fixing connecting plate 7 and connecting plate 8 to foamed concrete 6. One side of connecting plate 7 is provided with an arc-shaped groove, and multiple suction cups are regularly arranged on the outer wall of one side of connecting plate 8. Connecting plate 8 is a rectangular thin plate structure. Multiple concrete interfaces and damper rotation interfaces are provided between foamed concrete 6 and connecting plate 8. Cross-type viscous damper 9 is installed between the concrete interfaces and damper rotation interfaces, enabling the cross-type viscous damper 9 to generate The micro-rotation in the direction, the foam concrete 6 is equipped with a steel plate 10, and the cross-type viscous damper 9 is welded to the steel plate 10. When an earthquake occurs, the seismic waves will be reflected and scattered in different directions through the holes inside, and there will be a certain frequency band gap. This process can filter and cancel the seismic waves of the band gap frequency. When the active fault displacement squeezes the tunnel and causes the filling material of the buffer layer pressure area to be compressed and destroyed, compared with the traditional rubber or asphalt concrete filling materials, which start to "become more and more compacted" after being compressed by a small amount of pressure, the material used in this utility model can undergo greater compression without generating significant additional pressure on the secondary lining 4 of the tunnel pressure area, and thus can adapt to a larger amount of fault dislocation.

[0030] The prefabricated vibration reduction and energy dissipation structure 3 has a micro-rotating cross-type viscous damper 9 inside. This cross-type viscous damper 9 can rotate slightly in one direction and deform slightly in different directions. When an earthquake or active fault displacement occurs, the cross-type viscous damper 9 can rotate and deform accordingly according to the corresponding vibration, absorb and reduce the energy released by the corresponding disaster, thereby reducing the effect.

[0031] The prefabricated vibration damping and energy dissipation structure 3 is also equipped with waterproof rubber materials on both sides. The side in contact with the secondary lining 4 is slightly arc-shaped, which can fit more tightly with the secondary lining 4. The side in contact with the waterproof layer 2 is thin and rectangular with regularly distributed suction cups attached to the outside, which can better fit with the waterproof layer 2. This makes the entire component more tightly arranged with the waterproof layer 2 and the secondary lining 4. When an earthquake or active fault displacement occurs, these two rubber parts can also deform to a certain extent and absorb energy. At the same time, they can further enhance the waterproofing ability to prevent a large amount of water from gushing out when the above-mentioned disasters occur.

[0032] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The control method of this utility model is through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0033] In the description of this utility model, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0034] Working principle:

[0035] The prefabricated vibration damping and energy dissipation structure between the tunnel linings can filter and cancel out seismic waves of certain frequencies when an earthquake occurs, as the seismic waves are reflected and scattered in different directions through the internal holes. The cross-type viscous damper 9 can rotate slightly in different directions and deform slightly in different directions. When an earthquake or active fault displacement occurs, the cross-type viscous damper 9 can rotate and deform accordingly according to the corresponding vibration, absorbing and reducing the energy released by the corresponding disaster, thereby reducing the effect. When an earthquake or active fault displacement occurs, the rubber connecting plate 7 and connecting plate 8 can also deform to a certain extent and absorb energy, while also further enhancing the waterproofing ability to prevent large amounts of water from gushing out during the above-mentioned disasters.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A prefabricated vibration damping and energy dissipation structure for tunnel lining, comprising a prefabricated vibration damping structure and a prefabricated vibration damping and energy dissipation structure (3) disposed within the prefabricated vibration damping structure, characterized in that: The prefabricated damping structure consists of an initial support (1), a waterproof layer (2), a prefabricated damping and energy dissipation structure (3), and a secondary lining (4) arranged sequentially from the inside to the outside. The prefabricated damping and energy dissipation structure (3) is composed of foamed concrete (6), rubber materials, and a cross-type viscous damper (9).

2. The prefabricated vibration damping and energy dissipation structure for tunnel lining as described in claim 1, characterized in that: The foamed concrete (6) has a porous structure, and rubber materials are placed on both sides of the foamed concrete (6). The rubber materials are composed of connecting plate one (7) and connecting plate two (8).

3. The prefabricated vibration damping and energy dissipation structure for tunnel lining as described in claim 2, characterized in that: One side of the connecting plate one (7) is provided with an arc-shaped groove, and multiple suction cups are regularly arranged on the outer wall of one side of the connecting plate two (8).

4. The prefabricated vibration damping and energy dissipation structure for tunnel lining as described in claim 2, characterized in that: Multiple concrete interfaces and damper rotation interfaces are provided between the foamed concrete (6) and the connecting plate (8), and the cross-type viscous damper (9) is installed between the concrete interfaces and the damper rotation interfaces.

5. The prefabricated vibration damping and energy dissipation structure for tunnel lining as described in claim 4, characterized in that: A steel plate (10) is installed inside the foamed concrete (6), and the cross-type viscous damper (9) is fixed on the steel plate (10).

6. The prefabricated vibration damping and energy dissipation structure for tunnel lining as described in claim 1, characterized in that: The waterproof layer (2) has expansion joints (5).

Images