6-DOF earthquake simulation vibrating device

Abstract

Provided is a 6-DOF earthquake simulation vibrating device, comprising a support platform; the support platform comprises a table top supporting an earthquake model; the table top is jointed by a plurality of motion units of a same structure; each motion unit can be independently perpendicular to the table top and move up and move; the support platform is supported on a second platform framework through a first platform framework and moves in a horizontal surface. The method employs the table top jointed by a plurality of motion units to provide local splitting up and down motion in a vertical direction, thereby directly performing local motion on the soil body of an earthquake model; through performing separation continuous motion on the model soil body, the model soil body can generate real cutting effects; in addition, the first platform framework and the second platform framework provide front, rear, left and right motion in a horizontal direction, thereby forming 6-DOF omnibearing earthquake simulation.

Description

technical field [0001] The invention relates to a test device for simulating earthquakes, in particular to a test device capable of simulating seismic vibration with six degrees of freedom, and the test device can especially be used for simulating the relative motion of a local area of ​​an earthquake. Background technique [0002] Earthquake simulation vibration devices are widely used in aerospace, earthquake simulation, product reliability, geotechnical engineering and other fields. Among them, earthquake simulation is a very important application field of earthquake simulation vibration devices. [0003] The propagation of seismic waves in the interior of the earth is divided into longitudinal waves and transverse waves. The wave whose vibration direction is consistent with the propagation direction is a longitudinal wave (P wave), and the longitudinal wave from the underground causes the ground to vibrate up and down. The wave whose vibration direction is perpendicular...

AI Technical Summary

Problems solved by technology

Due to the limited volume of the experimental platform, the largest table of a single experimental platform rarely exceeds 20m×15m, so the overall size of the seismic model is not too large, so such an experiment can only be obtained through simulation. The entire model is subject to severe vibration In the subsequent overall seismic data, the slight vibration of low magnitude has little influence on the entire model in the scale range of the model due to the small size of the model, and because the seismic model moves as a whole, it cannot simulate the relative motion of the local area. coming earthquake impact

[0006] Moreover, similar to the six-degree-of-freedom earthquake simulation vibration device disclosed in Chinese patent application CN201310491139.6, the structural height of the double-layer table provided by it is too high, the stability of the high center of gravity is not good, and the model is easy to overturn in the environment such as centrifugal gravity test , and too many drive device settings lead to poor reliability of the equipment, complicated control, and low practicability

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