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Vibration device for structure collapse test

A technology of a vibration device and a driving device, which is applied in the field of civil engineering, can solve the problems of unpublished similar patent applications, no vibration excitation method, etc., and achieves the effect of simple and reliable structure and avoiding twisting.

Inactive Publication Date: 2017-04-26
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, after searching, the State Intellectual Property Office has not yet published similar patents or similar patent applications, and there is no similar excitation method in foreign literature.

Method used

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  • Vibration device for structure collapse test
  • Vibration device for structure collapse test
  • Vibration device for structure collapse test

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] As shown in references 1 and 2, the present invention provides a vibration device for structural collapse tests, including a trolley 3, a spring set 5, a driving device 6, a limiting device 2 and a fixed pedestal 1. Among them, the trolley 3 can vibrate along the horizontal direction, and the test model 4 can be fixedly installed; The driving device includes a jack 6, which drives the trolley 3 to the set position, controls the amplitude of the test model 4, and inputs the energy required for the collapse of the structure; the limit device 2 adopts a steel wire rope that can be cut off quickly, and fixes the trolley 3 on the ground through the steel wire rope. After setting the position and cutting the wire rope, the trolley 3 vibrates horizontally under the action of the spring group 5 . According to the needs of the test, two pairs of springs of the same specification are selected in parallel to form the spring group 5, and are installed symmetrically on both sides of...

Embodiment 2

[0047] Such as figure 1 , 2 As shown, this embodiment provides a vibrating device for structural collapse test, the structure of the vibrating device is basically the same as that of Embodiment 1, the difference is that the limiting device 2 adopts a steel screw that can be quickly released and the length can be adjusted by a nut .

[0048]This embodiment also provides a method for performing a collapse test using the vibrating device in this embodiment, the method comprising the following steps:

[0049] (1) Connect the trolley 3 and the spring group 5 with the fixed pedestal 1 by using turnbuckle screws 7;

[0050] (2) Relying on the fixed pedestal 1, use the jack 6 to adjust the turnbuckle 7 so that the trolley 3 can vibrate in the horizontal direction, and the tightening distance of the turnbuckle 7 exceeds the set amplitude of the trolley;

[0051] (3) The test model 4 is fixedly installed on the dolly 3;

[0052] (4) Apply an initial displacement to the trolley 3 wit...

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Abstract

The invention relates to a vibration device for structure collapse test. The vibration device comprises a dolly, a spring group, a driver, a limiting device and a fixed pedestal, the dolly is arranged on the fixed pedestal, the two sides of the dolly are connected to the fixed pedestal via the spring group, the driver drives the dolly to a set position and generate an initial displacement, the limiting device fixes the dolly in the set position, after that the limiting device is released, the dolly vibrations in a reciprocating manner in the horizontal direction under the effect of the spring group, the tensile rigid of the spring group and the initial displacement of the dolly are changed to adjust the vibration frequency and amplitude of the dolly, and power reactions of a test model fixed on the dolly under different simulation conditions are obtained. Compared with the prior art, the vibration device is simple and reliable in structure, and can satisfy requirements for structure collapse test of full-size houses.

Description

technical field [0001] The invention belongs to the field of civil engineering, and in particular relates to a vibration device used for a structure collapse test. Background technique [0002] my country is an earthquake-prone country. Historically, earthquake disasters have occurred frequently, causing heavy casualties and severe damage to buildings. This also makes it urgent to analyze the mechanism of earthquake damage and improve the seismic performance of buildings. Due to the complexity of the two, the performance, reaction process and failure mechanism of the structure under the action of earthquake cannot be fully understood only by the method of theoretical analysis, and the seismic performance of the structure needs to be studied through experiments. [0003] Under the existing technical conditions, there are mainly three methods to study the seismic performance of structures through experiments: the first is quasi-static tests. At present, electro-hydraulic servo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M7/02G01M7/04
CPCG01M7/04G01M7/022
Inventor 李翔顾祥林侯永俊杨纪芒唐文豪
Owner TONGJI UNIV
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