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An upper and lower cross tunnel shock absorption structure and construction method thereof

A technology for crossing tunnels and tunnel construction, applied in tunnels, tunnel linings, underground chambers, etc., can solve the problem of weakened seismic performance of tunnel structures, complex stress on surrounding rock stability and supporting structures, and affecting the safety of underground traffic systems, etc. problem, to achieve the effect of improving the overall waterproof performance, reducing mutual influence, and increasing the length

Active Publication Date: 2017-10-27
NANJING GEOTECHNICAL & UNDERGROUND SPACE TECH CO LTD
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Problems solved by technology

However, due to the small distance between the crossing tunnels, they will be disturbed many times during the construction process, making the stability of the surrounding rock and the force of the supporting structure more complicated, and due to the interaction between the upper and lower tunnels, the seismic resistance of the tunnel structure Weakened performance, affecting the safety of the underground transit system

Method used

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  • An upper and lower cross tunnel shock absorption structure and construction method thereof
  • An upper and lower cross tunnel shock absorption structure and construction method thereof
  • An upper and lower cross tunnel shock absorption structure and construction method thereof

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Embodiment Construction

[0030] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0031] A shock-absorbing structure for an up and down intersecting tunnel according to the present invention, which includes a lining segment structure 1 surrounding the inner layer of the tunnel under construction, and the lining segment structure 1 is composed of a low Z-shaped segment 11, a high Z-shaped segment 12 and T-shaped transfer segments 13 are stacked. The high Z-shaped segment 12 is stacked at a certain distance from the tunnel under construction to the original tunnel to make the tunnel under construction produce a small inclination angle, and to increase the distance between the tunnel under construction and the original tunnel. There is a clear height difference between the tunnels to reduce the mutual influence between the upper tunnel and the lower tunnel, and the shock absorbing layer 3 is set on the side close to the original...

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Abstract

The invention discloses a shock-absorbing structure for an up and down crossing tunnel, which includes a lining segment structure surrounding the inner layer of the tunnel under construction, and the lining segment structure consists of a short Z-shaped segment, a tall Z-shaped segment and a T The tunnel under construction is stacked at a certain distance from the original tunnel, and the high Z-shaped segment is stacked to make the tunnel under construction produce a small inclination angle and increase the distance between the tunnel under construction and the original tunnel. Clear height difference, a shock-absorbing layer is set on the side close to the original tunnel at a certain distance from the construction of the tunnel under construction to the original tunnel. The invention has the advantages of strong anti-seismic performance, high safety, and can reduce the vibration influence of traffic vehicles on the tunnel structure.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to an upper and lower intersection tunnel damping structure and a construction method thereof. Background technique [0002] The cross tunnel is a special type of tunnel structure, in which two tunnel structures cross each other at a certain angle. Since it is not restricted by terrain conditions and the overall line shape, it is especially suitable for tunnel structures in urban subway cross-line rail transit. However, due to the small distance between the crossing tunnels, they will be disturbed many times during the construction process, making the stability of the surrounding rock and the force of the supporting structure more complicated, and due to the interaction between the upper and lower tunnels, the seismic resistance of the tunnel structure The performance is weakened, which affects the safety of the underground transportation system. Contents of the inven...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/00E21D11/08
Inventor 左熹倪红顾荣蓉周桂云
Owner NANJING GEOTECHNICAL & UNDERGROUND SPACE TECH CO LTD
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