Device and method for accurately and visually testing soil displacement in seismic piping destroy

Abstract

The invention discloses a device and method for accurately and visually testing soil displacement in seismic piping destroy. The device comprises a water supply device and a transparent model box. Thetransparent model box is lower than the water supply device. The bottom of the transparent model box is provided with an interface communicated with the water supply device. A plurality of pore pressure measuring devices are equidistantly disposed in the transparent model box. The device also comprises a shaking platform for storing the transparent model box, a water head adjustment mechanism foradjusting water head height of the water supply device, and a digital observing system. Through combination of saturated transparent soil samples and a particle image processing technology, the problem that the soil internal deformation and displacement field cannot be continuously measured and are invisible in soil piping destroy under action of earthquake is solved so that the piping destroy process visualization is realized under action of earthquake.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering visualization tests, in particular to an accurate visualization test device and test method for soil displacement when earthquake piping damages. Background technique [0002] Geotechnical engineering is a branch of civil engineering. It is a discipline involving soil mechanics, rock mechanics, engineering geology, etc. to solve engineering technical problems related to rock and soil in various practical projects, and is closely connected with people's lives. Earthquake refers to the vibration caused by the rapid release of energy from the earth's crust, and a natural phenomenon in which seismic waves are generated during the vibration process. Earthquakes can cause the collapse of various buildings and structures, damage to equipment and facilities, and interruption of transportation and communication. Direct disasters such as landslides, debris flows, piping and other secondary ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the above-mentioned deficiencies and defects, and propose a test device and test method for accurate visualization of soil displacement during earthquake piping damage, which solves the problems of soil internal deformation and displacement field measurement when soil piping damage occurs under earthquakes Discontinuity and invisible problems, thus realizing the purpose of accurate visualization model test of piping failure process under earthquake

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