Tunnel inverted arch shock insulation support

Abstract

The utility model relates to the technical field of tunnel inverted arches, in particular to a tunnel inverted arch shock insulation support which comprises a shock absorption component set and a supporting shock insulation component set which are arranged between a primary support and a secondary lining, the shock absorption component set comprises an outer partition plate piece, a first expansion bolt is arranged in the outer partition plate piece, and a second expansion bolt is arranged in the outer partition plate piece. A rubber shock insulation cushion piece is arranged on one side of the outer partition plate piece. Through the design of the shock absorption component group and the supporting shock insulation component group, the influence of earthquake force on the inverted arch can be effectively reduced, the stability of the structure is enhanced, and the problems of arching, deformation and the like can be prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel invert, and particularly relates to a tunnel invert seismic isolation bearing. Background Technique

[0002] The tunnel invert is a reverse arch structure arranged at the bottom of the tunnel to improve the stress condition of the upper support structure of the tunnel. It is one of the main components of the tunnel structure. On the one hand, it effectively transfers the stratum pressure above the tunnel or the load on the road surface to the ground through the tunnel side wall structure, and also effectively resists the reaction force transmitted from the lower stratum of the tunnel.

[0003] At present, there is a lack of seismic isolation structure in the tunnel invert. In the face of the ground vibration caused by an earthquake, the seismic force will be transmitted to the tunnel invert structure through the foundation, which is likely to cause problems such as arching deformation of the invert structure, affecting the safety and reliability of the tunnel. Summary of the Utility Model

[0004] In order to overcome the above technical problems, the purpose of the utility model is to provide a tunnel invert seismic isolation bearing to solve the problem that the current tunnel invert structure lacks a seismic isolation structure for dealing with earthquakes mentioned in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical scheme:

[0006] A tunnel invert seismic isolation bearing includes a main body component group. The main body component group includes primary support and secondary lining. An earthquake absorption component group and a support and seismic isolation component group are arranged between the primary support and the secondary lining. The earthquake absorption component group includes an outer partition member. An expansion bolt one is arranged inside the outer partition member. A rubber seismic isolation pad member is arranged on one side of the outer partition member. A bolt one is arranged inside the rubber seismic isolation pad member. A fiber cloth is arranged on one side of the rubber seismic isolation pad member. A waterproof board member is arranged on one side of the fiber cloth. An expansion bolt two is arranged inside the waterproof board member. The support and seismic isolation component group includes an end plate. A sealing ring is arranged on one side of the end plate. A steel bone ring piece is arranged on one side of the sealing ring. A rubber earthquake absorption ring piece is arranged on one side of the steel bone ring piece. A rubber sealing cylinder is arranged outside the rubber earthquake absorption ring piece. A support column is arranged inside the rubber earthquake absorption ring piece. A bolt two is arranged inside the end plate. A bolt three is arranged inside the end plate.

[0007] Preferably, multiple groups of the earthquake absorption component group and the support and seismic isolation component group are provided, and multiple groups of the earthquake absorption component group and the support and seismic isolation component group are evenly distributed between the primary support and the secondary lining.

[0008] Preferably: six groups of expansion bolts are provided, and the six groups of expansion bolts are symmetrically distributed on both sides of the outer partition member, the outer partition member is connected to the initial support through the expansion bolts, and two groups of rubber seismic isolation pads are provided, and the two groups of rubber seismic isolation pads are symmetrically distributed on both sides of the supporting seismic isolation component group.

[0009] Preferably: the rubber seismic isolation pad is connected to the outer partition member by bolt member 1, one side of the fiber cloth is in contact with the rubber seismic isolation pad, the waterproof plate and the fiber cloth are connected to the rubber seismic isolation pad by expansion bolt 2, and the waterproof plate is connected to the secondary lining.

[0010] Preferably, two groups of end plates are provided, and the two groups of end plates are symmetrically distributed on both ends of the support column, and multiple groups of steel frame ring plates and rubber shock-absorbing ring plates are provided, and the multiple groups of steel frame ring plates and rubber shock-absorbing ring plates are staggered in the rubber sealing tube.

[0011] Preferably, both ends of the rubber sealing cylinder are connected to two groups of end plates.

[0012] Preferably, the sealing ring is connected to the rubber sealing cylinder, and the sealing ring is connected to the end plate via a second bolt.

[0013] Preferably, one group of the end plates is connected to the outer partition plate member by three bolt members, and another group of the end plates is connected to the waterproof plate member by three bolt members.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The tunnel invert seismic isolation bearing is provided with a shock absorbing component group and a supporting seismic isolation component group. The current tunnel invert lacks a seismic isolation structure. When facing ground vibrations caused by earthquakes, the vibration force will be transmitted to the tunnel invert structure through the foundation, which may easily lead to problems such as arching and deformation of the invert structure, affecting the safety and reliability of the tunnel. In the corresponding designed shock absorbing component group and supporting seismic isolation component group, the supporting seismic isolation component group is connected between the outer partition plate and the waterproof plate, and the structure inside the supporting seismic isolation component group is used to ensure the stability of the supporting seismic isolation component group structure through steel frame ring plates, rubber sealing tubes and support columns, while the rubber shock absorbing ring plates staggered with the steel frame ring plates are used to absorb the vibration force. The rubber seismic isolation pads are connected between the outer partition plate and the waterproof plate, and are also used to absorb the vibration force. When an earthquake occurs outside, the vibration force will first be transmitted to the initial support through the soil, and the vibration force will then be absorbed and reduced by the rubber isolation pads and the support isolation component group. Although the rubber isolation pads and the support isolation component group are both shock-absorbing structures, the difference is that the support isolation component group can absorb the vibration force of heavy loads, ensuring that while absorbing the vibration force, it can also play a supporting role to ensure the stability of the structure between the initial support and the secondary lining. The rubber isolation pads are used in conjunction with the support isolation component group to play an auxiliary shock-absorbing role and can effectively absorb the vibration force. Through the design of the shock-absorbing component group and the support isolation component group, the impact of the earthquake vibration force on the invert arch can be effectively reduced, the stability of the structure is enhanced, and it helps to prevent the occurrence of problems such as arch deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of one side of the whole of the utility model;

[0017] Figure 2 It is a schematic diagram of the structure of the other side of the whole of the utility model;

[0018] Figure 3 It is a schematic structural diagram of the overall cross-section of the utility model;

[0019] Figure 4 For the utility model Figure 3 The structural diagram at A in the middle;

[0020] Figure 5 It is a schematic structural diagram of the shock absorbing component group and the supporting shock isolating component group of the utility model.

[0021] In the figure: 01, main component group; 11, primary support; 12, secondary lining; 02, shock absorption component group; 21, outer partition member; 22, expansion bolt I; 23, rubber isolation pad; 24, bolt I; 25, fiber cloth; 26, waterproof board member; 27, expansion bolt II; 03, support isolation component group; 31, end plate; 32, sealing ring; 33, steel bone ring plate; 34, rubber shock absorption ring plate; 35, rubber sealing cylinder; 36, support column; 37, bolt II; 38, bolt III. Specific implementation mode

[0022] Please refer to Figures 1-5 , an embodiment provided by the present utility model: a tunnel invert isolation bearing, including a main component group 01, the main component group 01 includes a primary support 11 and a secondary lining 12, a shock absorption component group 02 and a support isolation component group 03 are arranged between the primary support 11 and the secondary lining 12, the shock absorption component group 02 includes an outer partition member 21, an expansion bolt I 22 is arranged inside the outer partition member 21, a rubber isolation pad 23 is arranged on one side of the outer partition member 21, a bolt I 24 is arranged inside the rubber isolation pad 23, a fiber cloth 25 is arranged on one side of the rubber isolation pad 23, a waterproof board member 26 is arranged on one side of the fiber cloth 25, and an expansion bolt II 27 is arranged inside the waterproof board member 26; the support isolation component group 03 includes an end plate 31, a sealing ring 32 is arranged on one side of the end plate 31, a steel bone ring plate 33 is arranged on one side of the sealing ring 32, a rubber shock absorption ring plate 34 is arranged on one side of the steel bone ring plate 33, a rubber sealing cylinder 35 is arranged outside the rubber shock absorption ring plate 34, a support column 36 is arranged inside the rubber shock absorption ring plate 34, a bolt II 37 is arranged inside the end plate 31, and a bolt III 38 is arranged inside the end plate 31.

[0023] Multiple groups of shock absorption component groups 02 and support isolation component groups 03 are provided, and the multiple groups of shock absorption component groups 02 and support isolation component groups 03 are evenly distributed between the primary support 11 and the secondary lining 12.

[0024] Six groups of expansion bolts I 22 are provided, and the six groups of expansion bolts I 22 are symmetrically distributed on both sides of the outer partition member 21. The outer partition member 21 is connected to the primary support 11 through the expansion bolts I 22. Two groups of rubber isolation pads 23 are provided, and the two groups of rubber isolation pads 23 are symmetrically distributed on both sides of the support isolation component group 03.

[0025] The rubber isolation pad 23 is connected to the outer partition member 21 through the bolt I 24. One side of the fiber cloth 25 is in contact with the rubber isolation pad 23. The waterproof board member 26 and the fiber cloth 25 are connected to the rubber isolation pad 23 through the expansion bolt II 27. The waterproof board member 26 is connected to the secondary lining 12.

[0026] Two sets of end plates 31 are provided, and the two sets of end plates 31 are symmetrically distributed at both ends of the support column 36. Multiple sets of steel bone ring plates 33 and rubber shock-absorbing ring plates 34 are provided, and the multiple sets of steel bone ring plates 33 and rubber shock-absorbing ring plates 34 are staggered in the rubber sealing cylinder 35.

[0027] Both ends of the rubber sealing cylinder 35 are connected to the two sets of end plates 31.

[0028] The sealing ring 32 is connected to the rubber sealing cylinder 35, and the sealing ring 32 is connected to the end plate 31 through the bolt member II 37.

[0029] One set of end plates 31 is connected to the outer partition member 21 through the bolt member III 38, and the other set of end plates 31 is connected to the waterproof plate member 26 through the bolt member III 38.

[0030] Working principle: At present, there is a lack of seismic isolation structure in the tunnel invert. In the face of ground vibrations caused by earthquakes, the seismic force will be transmitted to the tunnel invert structure through the foundation, which is likely to cause problems such as arching deformation of the invert structure, affecting the safety and reliability of the tunnel. In the corresponding designed shock-absorbing component group 02 and support seismic isolation component group 03, the support seismic isolation component group 03 is connected between the outer partition member 21 and the waterproof plate member 26. The internal structure of the support seismic isolation component group 03 uses the steel bone ring plate 33, rubber sealing cylinder 35 and support column 36 to ensure the stability of the structure of the support seismic isolation component group 03. The rubber shock-absorbing ring plate 34 staggered with the steel bone ring plate 33 is used to absorb the seismic force. The rubber isolation pad member 23 is connected between the outer partition member 21 and the waterproof plate member 26 and is also used to absorb the seismic force. When an earthquake occurs externally, the seismic force will first be conducted to the primary support 11 through the soil mass, and then the seismic force will be absorbed and reduced by the rubber isolation pad member 23 and the support seismic isolation component group 03. Although both the rubber isolation pad member 23 and the support seismic isolation component group 03 are shock-absorbing structures, the difference is that the support seismic isolation component group 03 can absorb heavy seismic forces, ensure the absorption of seismic forces, and play a supporting role at the same time, ensuring the stability of the structure between the primary support 11 and the secondary lining 12. The rubber isolation pad member 23 is used in cooperation with the support seismic isolation component group 03 to play an auxiliary shock-absorbing role and can effectively absorb the seismic force. Through the design of the shock-absorbing component group 02 and the support seismic isolation component group 03, the impact of earthquake seismic forces on the invert can be effectively reduced, the stability of the structure is enhanced, and the occurrence of problems such as arching deformation can be prevented.

Claims

1. A tunnel invert seismic isolation bearing, comprising a main component group, the main component group including primary support and secondary lining, characterized in that: An earthquake-absorbing component group and a support seismic isolation component group are arranged between the primary support and the secondary lining. The earthquake-absorbing component group includes an outer partition member, an expansion bolt I is arranged inside the outer partition member, a rubber seismic isolation pad member is arranged on one side of the outer partition member, a bolt I is arranged inside the rubber seismic isolation pad member, a fiber cloth is arranged on one side of the rubber seismic isolation pad member, a waterproof plate member is arranged on one side of the fiber cloth, and an expansion bolt II is arranged inside the waterproof plate member; The support seismic isolation component group includes an end plate, a sealing ring is arranged on one side of the end plate, a steel bone ring plate is arranged on one side of the sealing ring, a rubber earthquake-absorbing ring plate is arranged on one side of the steel bone ring plate, a rubber sealing cylinder is arranged outside the rubber earthquake-absorbing ring plate, a support column is arranged inside the rubber earthquake-absorbing ring plate, a bolt II is arranged inside the end plate, and a bolt III is arranged inside the end plate.

2. The seismic isolation bearing for the invert of a tunnel according to claim 1, wherein: Multiple groups of the earthquake-absorbing component group and the support seismic isolation component group are provided, and the multiple groups of earthquake-absorbing component group and support seismic isolation component group are evenly distributed between the primary support and the secondary lining.

3. The seismic isolation bearing for the invert of a tunnel according to claim 1, characterized in that: Six groups of the expansion bolt I are provided, and the six groups of expansion bolt I are symmetrically distributed on both sides of the outer partition member. The outer partition member is connected to the primary support through the expansion bolt I. Two groups of the rubber seismic isolation pad members are provided, and the two groups of rubber seismic isolation pad members are symmetrically distributed on both sides of the support seismic isolation component group.

4. The seismic isolation bearing for the invert of a tunnel according to claim 1, wherein: The rubber seismic isolation pad member is connected to the outer partition member through the bolt I. One side of the fiber cloth contacts the rubber seismic isolation pad member. The waterproof plate member and the fiber cloth are connected to the rubber seismic isolation pad member through the expansion bolt II. The waterproof plate member is connected to the secondary lining.

5. The seismic isolation bearing for tunnel inverted arch according to claim 1, characterized in that: Two groups of the end plates are provided, and the two groups of end plates are symmetrically distributed at both ends of the support column. Multiple groups of the steel bone ring plates and the rubber earthquake-absorbing ring plates are provided, and the multiple groups of steel bone ring plates and rubber earthquake-absorbing ring plates are staggered and arranged inside the rubber sealing cylinder.

6. The seismic isolation bearing for the invert of a tunnel according to claim 1, characterized in that: Both ends of the rubber sealing cylinder are connected to the two groups of end plates.

7. The seismic isolation bearing for the invert of a tunnel according to claim 1, wherein: The sealing ring is connected to the rubber sealing cylinder, and the sealing ring is connected to the end plate through the bolt II.

8. The seismic isolation bearing for the invert of a tunnel according to claim 1, characterized in that: One group of the end plates is connected to the outer partition member through the bolt III, and the other group of the end plates is connected to the waterproof plate member through the bolt III.

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