Continuous test device suitable for simulating multi-point seismic input boundary

A test device and continuous technology, which is applied in the field of discrete multi-point input to simulate the actual continuous input of ground motion, can solve the problems of high price, complex structure, unrealistic test, etc., achieve multi-directional damping coefficient, low production cost, simple effect design

Active Publication Date: 2018-12-18
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And for the multi-point input of earthquake motion, it is often necessary to use multiple shaking table equipment. The existing earthquake simulation device is a comprehensive high-tech product, which is expensive, complex and large-scale. unrealistic

Method used

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  • Continuous test device suitable for simulating multi-point seismic input boundary
  • Continuous test device suitable for simulating multi-point seismic input boundary
  • Continuous test device suitable for simulating multi-point seismic input boundary

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Embodiment 1: Based on the viscoelastic artificial boundary theory, a single vibration unit can be directly used when simulating the consistent excitation of structural ground motion, and the test can be carried out by directly installing the test object on the active platform a on the vibration unit.

Embodiment 2

[0055] Embodiment 2: Based on the viscoelastic artificial boundary theory, when performing multi-point earthquake test simulations of structures, such as long-span bridges and multiple transmission towers, such a discrete multi-point input mode can use multiple vibration units The test can be carried out by installing the input points of the test object on different active table a, and the distance between the vibration units is selected according to the test plan.

Embodiment 3

[0056]Embodiment 3: Based on the viscoelastic artificial boundary theory, when performing multi-point earthquake test simulations of structures, such as large concrete gravity dams, such structures need to convert discrete multi-point input modes into continuous input of actual earthquake motions, then Arrange the vibration unit at the desired input point position, and connect different vibration units with a servo table, and the size of the table surface of the servo table is designed according to the test plan.

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PUM

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Abstract

The invention provides a continuous test device suitable for simulating a multi-point seismic input boundary. The continuous test device comprises at least two vibration units; an active platform is fixed on each vibration unit; follow-up platforms are arranged between at least a pair of adjacent active platforms, wherein each vibration unit comprises a force applying device, a foundation structure, a force guiding device, an electrorheological fluid, a stiffness control device, a damping control device, a positive plate, a negative plate, an anti-seepage tarpaulin, a connecting member for connecting the force applying device and the stiffness control device, the active platforms and the follow-up platforms; follow-up columns are fixed to one side, close to the follow-up platforms, of a supporting platform, and the two ends of the follow-up platforms are respectively connected with one follow-up column through a double-head elastic spherical hinge; the double-head elastic spherical hinge comprises two spherical hinges; the inside of a hinge rod of one spherical hinge is hollow, the diameter is slightly large, and a telescopic hole is formed at the end of the rod; and the diameter of a hinged rod of the other spherical hinge is slightly smaller, and slides in the hinge rod with the larger diameter through the telescopic hole. The continuous test device suitable for simulating the multi-point seismic input boundary provided by the invention can be applied to continuous simulation of artificial boundaries in a multi-point ground earthquake motion test.

Description

technical field [0001] The invention relates to a structural earthquake simulation device, specifically, a simulation based on the viscoelastic artificial boundary theory suitable for multi-point ground motion tests, especially discrete multi-point input to simulate the actual continuous input of ground motion. Background technique [0002] Due to the development of engineering technology, building structures tend to be large-scale, and they all undertake this important social function. In addition, my country is located between the Pacific Ocean seismic zone and the Eurasian seismic zone, and earthquakes occur frequently. Therefore, for this type of The earthquake resistance of the structure should be given great attention. For the seismic response analysis of long-span structures, it is necessary to take into account the traveling wave effect, coherence effect and local site effect in the process of earthquake propagation, so the time and space changes of ground motion must...

Claims

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Application Information

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IPC IPC(8): G01M7/06
Inventor 柳国环黄伟纬
Owner TIANJIN UNIV
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