Earthquake simulation test device and method based on electro-hydraulic servo system

Abstract

The invention discloses a seismic simulation test device based on an electro-hydraulic servo system. The device comprises a vibration table foundation, a shear wall, a bearing guide rail supporting system, an exciter, a transmission part, a horizontal table and a model box. The bearing guide rail supporting system comprises a number of bearing units. Each bearing unit comprises a bottom plate, a positioning frame and a cover plate, wherein the bottom plate, the positioning frame and the cover plate are arranged in order from bottom to top. A roller is arranged in the positioning frame. The bearing guide rail supporting system is connected with the vibration table foundation through the bottom plate. The horizontal table is connected with the cover plate. The model box is placed on the horizontal table. The exciter is arranged on the shear wall. The transmission part is connected between the exciter and the horizontal table. The force generated by the exciter is transmitted to the horizontal table, goes down to successively pass through the cover plate, the roller and the bottom plate to the vibration table foundation, and is transmitted up to the model box. A control system collects and analyzes data to realize seismic simulation. The device has the advantages of easy installation and disassembly, low production cost and good integrity, and provides uniform multi-zone support to reduce stress concentration.

Description

technical field [0001] The invention relates to a structural model test device and method, in particular to an earthquake simulation test device and method based on an electro-hydraulic servo system. Background technique [0002] The earthquake simulation shaking table can not only generate regular vibrations of various frequencies and amplitudes, but also reproduce seismic waves very well, so it is an important equipment for seismic research. The construction of vibrating tables in our country began in the 1960s. Up to now, there have been nearly 50 vibrating table systems, most of which are imported from abroad. However, the structure of the vibrating table is complex, integrating precision machining, electro-hydraulic servo control technology and computer technology, and the price is expensive, so it is difficult to build in general colleges and research institutes. [0003] At present, there are few domestic tests on seismic simulation shaking tables based on electro-hy...

AI Technical Summary

Problems solved by technology

Its foundation and horizontal platform are all reinforced concrete structures, steel welded structures, aluminum alloy or magnesium aluminum alloy casting structures. Subject application

The structure of its supporting and operating mechanism is relatively complicated, basically a linear ball guide rail. This type of guide rail has high requirements for production and processing, high requirements for the flatness, straightness and friction coefficient of the guide rail, and the later maintenance costs are large. Supporting use with liquid servo system

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