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Tunnel axial damping and energy absorbing device and tunnel lining structure with same

An energy-absorbing device and tunnel technology, which is applied in the field of geotechnical engineering, can solve problems such as inability to play a shock-absorbing role, absorbing no effect, and expansion joints unable to absorb energy, etc., to achieve good shock-absorbing effect, easy Ease of replacement and installation

Inactive Publication Date: 2017-04-26
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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  • Tunnel axial damping and energy absorbing device and tunnel lining structure with same
  • Tunnel axial damping and energy absorbing device and tunnel lining structure with same
  • Tunnel axial damping and energy absorbing device and tunnel lining structure with same

Examples

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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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Abstract

The invention relates to a tunnel axial damping and energy absorbing device and a tunnel lining structure with the same. The tunnel axial damping and energy absorbing device comprises two connecting pieces, wherein the two connecting pieces are used for being connected with an energy absorbing body and adjacent lining body structures divided in the axial direction of a tunnel, and the energy absorbing body is arranged to be rigid in the radial direction of the tunnel and can generate relative displacement for absorbing the axial energy in the axial direction of the tunnel. According to the tunnel axial damping and energy absorbing device provided by the invention, due to the rigid characteristics in the radial direction of the tunnel, the capacity of bearing static loads of the whole tunnel lining is not damaged, the tunnel has certain flexibility in the axial direction, the anti-seismic capacity of the axial tension and compression deformation of the tunnel can be improved, the phase derivative stress and relative displacement generated by an earthquake can be absorbed, a good earthquake resistance and absorption effect is achieved, and the safety of the tunnel lining structure during the earthquake is guaranteed; and in addition, the device is convenient 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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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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