Multi-functional test-bed for load identification and damage identification of plate-girder structure

A load identification and damage identification technology, applied in the field of structural dynamics, can solve problems such as inability to determine the location and degree of damage, incomplete vibration data, and difficulty in accurate measurement, so as to facilitate basic research, easy installation, and strong operability Effect
CN106092479AInactive Publication Date: 2016-11-09SOUTHWEST JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SOUTHWEST JIAOTONG UNIV
Publication Date
2016-11-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a multi-functional test-bed for the load identification and damage identification of a plate-girder structure. The multi-functional test-bed comprises a T-type groove platform, a supporting device and a movable lifting stage; the supporting device comprises supporting upright columns; the bottoms of the supporting upright columns are installed on the T-type groove platform; four supporting upright columns are adopted; and the four supporting upright columns are distributed in two rows and two columns; the movable lifting stage is detachably installed on the T-type groove platform; and the top surface of the movable lifting stage is provided with an exciter A. The multi-functional test-bed of the invention can be applied to the load identification and damage identification research of a plate-girder structure test piece. With the multi-functional test-bed adopted, a foundation can be provided for the theoretical application research of structural dynamic characteristic parameter identification, structural optimization and the like.
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Description

technical field

[0001] The invention relates to the field of structural dynamics, in particular to a multifunctional test bench for plate girder structure load identification and damage identification. Background technique

[0002] Structural load identification and damage identification belong to the second category of inverse problems in structural dynamics.

[0003] Payload identification technology is also called payload reconstruction or payload deconvolution. It is a technology to reverse the dynamic load of the structure based on the known dynamic characteristics of the structure and the measured dynamic response. Load identification is used as an indirect method to calculate loads in harsh environments or loads that cannot be directly acquired by sensors. In order to solve the inverse identification problem, the structural model must be known. In most practical situations, the load identification problem is ill-conditioned because not all state variables or initia...

Claims

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