Self-loading device for test of simulating crustal stress of surrounding rock on rock tunnel shaking table

A technology of shaking table test and ground stress, which is applied in the direction of vibration test, measuring device, machine/structural component test, etc. It can solve the problems of test distortion and other problems, and achieve the effect of long-lasting loading, small mass and reduced weight

Inactive Publication Date: 2012-08-01
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Overcome the shortcomings of being unable to apply and severe distortion of the test at present, and solve the simulation problem of surrounding rock stress under earthquake conditions

Method used

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  • Self-loading device for test of simulating crustal stress of surrounding rock on rock tunnel shaking table
  • Self-loading device for test of simulating crustal stress of surrounding rock on rock tunnel shaking table
  • Self-loading device for test of simulating crustal stress of surrounding rock on rock tunnel shaking table

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Embodiment Construction

[0017] In order to make the above objects, features and advantages of the present invention more comprehensible, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0018] refer to figure 2 , figure 2 It is a cross-sectional view of the self-loading device for simulating the stress of the surrounding rock in the rock tunnel shaking table test of the present invention.

[0019] During the specific test, the specific operation method is described as follows:

[0020] 1. Preparatory work before the test and pouring of the test model: prepare similar materials, sensors and data collectors required for the test, and check whether the required equipment is normal, use the model box to pour the test model in layers, and maintain it to make the test The model is fully dry.

[0021] 2. Installation of the model box: first hoist the base to the shaking table, then pla...

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Abstract

The invention belongs to the technical field of civil engineering and relates to a self-loading device for a test of simulating crustal stress of a surrounding rock on a rock tunnel shaking table. The self-loading device comprises an airbag, an air compressor, a reducing valve and a model box which is provided with four side plates, a top cover and a base, wherein a left side plate is longitudinally and uniformly provided with at least two jacks; a built-in plate which is parallel with the left side plate and has four sides wrapped with rubber is arranged inside the mo0del box; the jacks drive the built-in plate to displace in a horizontal direction so as to realize lateral loading; the air compressor inflates the airbag, and the reducing valve controls the pressure of the airbag; and the airbag is arranged in the model box to realize vertical loading. The device is used for a test on a shaking table to stimulate different initial crustal stress states and provide convenience for researching dynamic response of a tunnel under different work conditions. By adopting an airbag loading way, the self-loading device, disclosed by the invention, can reduce mass of the model box per se to the maximum extent while realizing loading of the test on the shaking table.

Description

technical field [0001] The invention belongs to the technical field of underground engineering test instruments, and relates to a self-loading device used for rock tunnel shaking table tests to simulate surrounding rock stress. Background technique [0002] During the Wenchuan Earthquake, many tunnels were severely damaged, with cracks in the lining, heaving of the floor, exposed steel bars, and water seepage in the tunnels. With the large-scale construction of highway tunnels, researches on the seismic resistance and damping of underground structures are gradually gaining people's attention. Shaking table test is one of the effective means to research the seismic performance of tunnels. Because highway and railway tunnels are often buried deep, when an earthquake occurs, the tunnel structure will move together with the surrounding rock under high ground stress. However, due to the limitations of the current shaking table conditions, it is still impossible to simulate the ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M7/02
Inventor 陶连金侯森赵旭张波黄俊
Owner BEIJING UNIV OF TECH
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