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Deformable segment joint for tunnel seismic resistance

A segment joint and tunnel technology, which is applied in the field of deformable segment joints, can solve the problems of lack of seismic performance and single form of tunnel segment joints, so as to improve the shock absorption and disaster prevention performance, reduce the vibration situation, and achieve a reasonable structure. Effect

Pending Publication Date: 2019-05-10
TIANJIN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The magnitude 6.4 earthquake in San Fernando, USA in 1971 caused damage to many tunnels to varying degrees. Currently, the segment joints used in tunnel construction are in a single form and do not have seismic performance

Method used

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  • Deformable segment joint for tunnel seismic resistance
  • Deformable segment joint for tunnel seismic resistance
  • Deformable segment joint for tunnel seismic resistance

Examples

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Embodiment Construction

[0020] In order to make the objects and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the present invention.

[0021] The design concept of the present invention provides a deformable segment joint for tunnel isolation. Self-resetting bolts are used as the shock-absorbing structure at the segment joint of the tunnel, which has the effect of absorbing wave propagation, so that the joint of the segment It has the ability to absorb seismic waves, thereby protecting the tunnel structure from damage.

[0022] Such as figure 1 As mentioned above, the present invention proposes a deformable segment joint for tunnel anti-seismic, including a gasket 30 and two connecting bolts arranged between two segments 10, the gasket 30 is used to prevent th...

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Abstract

The invention discloses a deformable segment joint for tunnel seismic resistance, comprising a sealing gasket arranged between two segments and two connecting bolts, the connecting bolts are self-resetting bolts, each bolt comprises a bolt column, and each bolt column comprises a middle nickel-titanium alloy material section and low-carbon alloy steel sections at two ends; the nickel-titanium alloy material section is connected with the low-carbon alloy steel sections at the two ends through embedding structures; the nickel-titanium alloy material section is an arc cylinder section or a cylinder section with a same diameter as the bolts; and the low-carbon alloy steel sections are cylindrical sections with a diameter the same as that of the bolts, and one end of each low-carbon alloy steelsection is connected with the nickel-titanium alloy material section through an embedded structure. The self-resetting bolts are used as shock insulation structures with a buffering effect, so that the shock insulation segment joint has a certain absorption effect on propagation of seismic waves. The seismic isolation segment joint is used for replacing an original traditional segment joint, thetunnel structure can be protected from being damaged to a great extent, and the safety and personal safety of the tunnel structure are guaranteed.

Description

technical field [0001] The invention relates to the field of underground structure construction, in particular to a deformable segment joint used for seismic isolation of tunnels. Background technique [0002] With the needs of the national strategy, more and more places have carried out tunnel construction, and the expansion of the construction area has made the tunnel face more and more complex construction requirements. Therefore, the seismic problem of the tunnel is an important problem that needs to be solved. In a series of major earthquakes that have occurred around the world for more than a century, many underground structures have been damaged. For example, the Great Kanto Earthquake in Japan in 1923, with a magnitude of M=7.8, damaged a railway tunnel near the epicenter. In 1930, the Izu earthquake in Japan, with magnitude M=7.0, dislocated the drainage tunnel of Shitanna Railway Tunnel under construction by 2.39m horizontally and 0.6m vertically, and several crac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/08
Inventor 郑刚周海祚朱世友魏玉省杨鹏博郭知一
Owner TIANJIN UNIV
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