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Shock resisting and reducing structure spanning movable fault tunnel

A technology for active faults and tunnels, applied in tunnels, tunnel linings, shaft linings, etc., can solve problems such as difficulties in tunnel body repair, national economic losses, interruption of traffic, etc., achieve good shock-absorbing effects, absorb seismic energy, reduce effect of influence

Inactive Publication Date: 2011-09-07
SOUTHWEST JIAOTONG UNIV
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  • Summary
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the 20th century, it can be seen from the data of earthquake damage in the world that when the earthquake intensity reaches 7 degrees, there is a precedent for slight damage to the tunnel, and the repair of the tunnel body is extremely difficult, and even the traffic is interrupted, causing great losses to the national economy.

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  • Shock resisting and reducing structure spanning movable fault tunnel
  • Shock resisting and reducing structure spanning movable fault tunnel
  • Shock resisting and reducing structure spanning movable fault tunnel

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] refer to figure 1 and figure 2 , the anti-seismic structure of the tunnel across active faults of the present invention, the lining structure includes an inner lining 10 and an outer lining 11, the outer lining 11 is usually a shotcrete layer or a reinforced concrete layer, and the inner lining 10 is a reinforced concrete layer. refer to figure 1 and Figure 4 A damping zone extending longitudinally along the tunnel to both sides of the active fault is set at the active fault of the rock mass, and the damping zone is composed of a foam concrete layer 20 filled between the inner lining 10 and the outer lining 11. Since the foam concrete layer 20 has a considerable elastic modulus, when an earthquake occurs, the shock-absorbing area can effectively absorb the seismic energy and allow a certain amount of displacement of the active fault, so the ...

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Abstract

The invention discloses a shock resisting and reducing structure spanning movable fault tunnel, for reducing the influence of the movable fault on the tunnel and effectively improving the shock resisting and reducing performance of the tunnel. A lining structure of the tunnel comprises an inner liner (10) and an outer liner (11); a shock reducing area extending toward the two sides of the movablefault along the vertical direction of the tunnel is set at the rock movable fault part, and the shock reducing area is composed of a foam concrete layer (20) filled between the inner liner (10) and the outer liner (11). The shock resisting and reducing structure spanning movable fault tunnel can effectively absorb the earthquake energy, resist main earthquake load, stop the vertical transmission of the movable fault area load, and reduce the influence of the movable fault on the tunnel; thus, the invention has good shock resistance and reducing effect and can guarantee the safety of the liningstructure spanning the movable fault tunnel.

Description

technical field [0001] The invention relates to a tunnel structure, in particular to an anti-seismic structure for a tunnel spanning an active fault. Background technique [0002] Tunnels are surrounded by stratum media. When an earthquake occurs, underground structures move together with the surrounding rock. It is generally believed that earthquakes have little effect on underground structures (open and concealed tunnels, stations). It was not until after the Great Hanshin Earthquake in 1995 that people realized the possibility of earthquake damage in underground tunnels. Therefore, necessary measures should be taken in the design and construction of tunnels. [0003] Since the 20th century, it is known from the data of earthquake damage in the world that when the earthquake intensity reaches 7 degrees, there is a precedent for slight damage to the tunnel, and the repair of the tunnel body is extremely difficult, and even the traffic is interrupted, causing great losses to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/00E21D11/04
Inventor 王英学高波申玉生周佳媚全晓娟梁毅藏万军田尚志李海清林国进贺旭洲付业凡刘佩斯蒲佳韩华轩李丽
Owner SOUTHWEST JIAOTONG UNIV
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