A tunnel axial shock-absorbing energy-absorbing device and a tunnel lining structure with the device

An energy-absorbing device and tunnel technology, which is applied in the field of geotechnical engineering, can solve the problems that expansion joints cannot absorb energy, cannot play a role in shock absorption, and can not play any role in absorption and dispersion, and achieve good anti-shock effect, easy to use. Replacing and improving the effect of earthquake resistance

Inactive Publication Date: 2019-05-21
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, the anti-seismic method of tunnels is generally adopted in the anti-seismic design of tunnels, but this method cannot well prevent the occurrence of axial earthquake damage in tunnels; the expansion joint design adopted in the axial design of tunnels is to prevent the Expansion, cold contraction), to cause cracks or damage to the structure and set a structural joint along the appropriate part of the lining construction joint direction, and the above-mentioned tunnel expansion joints can only enable the tunnel to withstand sliding in the axial direction, for energy such as seismic waves The absorption does not play any role, that is, the expansion joint cannot absorb energy and cannot play a good shock absorption effect

Method used

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  • A tunnel axial shock-absorbing energy-absorbing device and a tunnel lining structure with the device
  • A tunnel axial shock-absorbing energy-absorbing device and a tunnel lining structure with the device
  • A tunnel axial shock-absorbing energy-absorbing device and a tunnel lining structure with the device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The tunnel axial damping and energy-absorbing device is directly connected to the main structure of the tunnel lining, and multiple sets of devices are distributed circumferentially within the cross-section of the tunnel lining at certain angular intervals; the tunnel axial shock-absorbing and energy-absorbing device includes energy absorbing modules and rigid connecting plates ;The energy absorbing module is a rubber composite shear type, which is composed of thin layers of rubber and steel plates alternately stacked; the rigid connecting plate is an L-shaped reinforced concrete plate, a total of two; the rubber composite shear type energy absorption module passes two L-shaped Rigid connecting plates are bolted at both ends of the stacking direction to the end face of the tunnel lining; when installed, the stacking direction is consistent with the radial direction of the tunnel and perpendicular to the axial direction of the tunnel.

[0035] Specifically: the energy abs...

Embodiment 2

[0041] The honeycomb-core shock-absorbing and energy-absorbing device is directly connected to the main structure of the tunnel lining, and multiple sets of devices are distributed circumferentially within the cross-section of the tunnel lining at certain angular intervals. The energy absorbing module of the honeycomb core type shock absorbing and energy absorbing device is a honeycomb core type. like Figure 5 As shown, the honeycomb core type shock absorbing and energy absorbing device is composed of a honeycomb core type energy absorbing module 4B and a rigid connecting plate. The honeycomb core type energy absorbing module 4B is in the shape of a honeycomb core, and the ports of multiple sets of hexagonal metal tubes 43 face the same side, back to back Symmetrically arranged and combined; the honeycomb core type energy absorbing module 4B is connected to the end faces 21, 22 of the tunnel lining unit 2A through the side of the length direction of the hexagonal metal tube 4...

Embodiment 3

[0044] The spring plate type shock-absorbing and energy-absorbing device is directly connected to the main structure of the tunnel lining, and multiple sets of devices are distributed circumferentially in the cross-section of the tunnel lining at certain angular intervals; the shock-absorbing and energy-absorbing device is composed of energy absorbing modules and rigid connecting plates, and the The absorption module is in the form of a spring plate; the rigid connecting plate is a flat reinforced concrete slab, and there are two in total; the two ends of the spring plate energy absorbing module in the expansion and contraction direction are bolted to the end face of the tunnel lining through two rigid connecting plates; The direction is consistent with the tunnel axis.

[0045] The energy absorbing module of the shock absorbing and energy absorbing device is a spring plate type energy absorbing module 4C. like Image 6 , Figure 7 As shown, the spring plate type shock absor...

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PUM

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Abstract

The invention relates to a tunnel axial shock absorption and energy absorption device and a tunnel lining structure having the device. The tunnel axial shock absorption and energy absorption device comprises: a lining for connecting an energy absorption body and a lining divided into adjacent ones along the tunnel axial direction Two connecting pieces of the main structure; wherein, the energy absorbing body is set to be rigid along the tunnel radial direction, and can generate relative displacement along the tunnel axial direction for absorbing axial energy. The tunnel axial shock absorption and energy absorption device provided by the invention does not impair the overall ability of the tunnel lining to bear static load due to the rigidity of the tunnel in the radial direction; the tunnel has certain flexibility in the axial direction, which can improve the axial tension and compression of the tunnel The seismic capacity of deformation, and can absorb the phase-derived stress and relative displacement generated by the earthquake, and has a good anti-shock effect, thus ensuring the safety of the tunnel lining structure during the earthquake; and the device is easy to install and easy to replace.

Description

technical field [0001] The invention belongs to the technical field of geotechnical engineering, and in particular relates to an axial vibration-absorbing energy-absorbing device for a tunnel and a tunnel lining structure provided with the device. Background technique [0002] Compared with surface structures such as bridges or high-rise buildings, the relative movement between the tunnel structure and the surrounding rock during an earthquake is not obvious for mountain tunnels. As a result, previous engineering circles did not pay much attention to their seismic behavior and seismic design. However, this traditional view has been proved to be one-sided by several major earthquakes in recent decades, such as the Great Hanshin Earthquake in Japan in 1995, the Chiji Earthquake in Taiwan in 1999, the Wenchuan Earthquake in Sichuan in 2008, and the Kumamoto Earthquake in 2016. In recent years, the anti-seismic method of tunnels is generally adopted in the anti-seismic design of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/00E21D11/15
CPCE21D11/00E21D11/155
Inventor 蒋宇静张学朋
Owner SHANDONG UNIV OF SCI & TECH
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