Dynamic response testing device and testing method for simulating lateral impact load subjected to by side slope of meizoseismal region

Abstract

The invention discloses a dynamic response testing device for simulating a lateral impact load subjected to by side slope of a meizoseismal region, which comprises a counter force frame, a test box, aspring, a chute and a bracket, wherein a side slope model is arranged in the test box; the slope model comprises an embankment placed at the bottom of the test box and a side slope placed on the embankment; the section of the side slope is in a shape of a right trapezoid; the upper part of the test box corresponding to the inclined plane of the side slope and the embankment is open; an observingwindow is arranged on the front wall of the test box; and one side of the inclined plane of the side slope model is towards the observing window. The dynamic response testing device for simulating thelateral impact load subjected to by side slope of the meizoseismal region in the invention truly represents the dynamic action response process and response manner of the side slope of the meizoseismal region subjected to the lateral impact load and provides accurate and reliable suggestions for engineering structure design, geological disaster prediction, etc. The structure of the invention is simple and easy to manufacture and easy to operate; and the test method is simple, economical and repeatable.

Description

technical field [0001] The invention belongs to the technical field of geotechnical engineering, in particular to a dynamic response testing device and a testing method for slopes in extremely seismic regions. Background technique [0002] An earthquake is a natural phenomenon in which seismic waves are generated during the vibration caused by the rapid release of energy from the earth's crust. Seismic waves are divided into three types according to the propagation mode: longitudinal wave, shear wave and surface wave. The longitudinal wave is a propulsive wave, and the propagation speed in the crust is 5.5-7 km / s. It reaches the epicenter first, also known as P wave, which makes the ground vibrate up and down, and is less destructive. The shear wave is a shear wave, and its propagation speed in the crust is 3.2-4.0 km / s. The second one reaches the epicenter, also known as the S wave, which makes the ground shake back and forth, left and right, and is more destructive. Surf...

AI Technical Summary

Problems solved by technology

Traditional engineering seismology summarizes the earthquake dynamics into the intensity, frequency and duration of the earthquake, which is the so-called "three elements of earthquake motion". Not thinking enough

[0004] Earthquake dynamics are very complex. Numerical methods are often used for simulation in current research. At the same time, large-scale model tests such as shaking table tests and dynamic centrifugal model tests are often used to simulate earthquake effects. However, there are few test devices involving simple earthquake dynamics simulations that can reproduce Responses of Slopes Under Different Intensities of Seismic Waves and Shear Waves

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