Bridge Damage Identification from Moving Load Induced Deflection Based on Wavelet Transform and Lipschitz Exponent

被引：35

作者：

Yu, Zhu ^{[1
,2
,3
]}

Xia, He ^{[1
,4
]}

Maria Goicolea, Jose ^{[2
]}

Xia, Chaoyi ^{[1
,4
]}

机构：

[1] Beijing Jiaotong Univ, Sch Civil Engn, Beijing 100044, Peoples R China

[2] Tech Univ Madrid, Sch Civil Engn, Madrid 28040, Spain

[3] Anhui Expressway Holding Grp Co Ltd, Hefei 230088, Peoples R China

[4] Beijing Key Lab Struct Wind Engn & Urban Wind Env, Beijing 100044, Peoples R China

来源：

INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS | 2016年 / 16卷 / 05期

关键词：

Wavelet transform; Lipschitz exponent; moving load; damage identification; experiment; CRACK IDENTIFICATION; DYNAMIC-RESPONSE; BEAM; SUBJECT; PLATES;

D O I：

10.1142/S0219455415500030

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The wavelet transform and Lipschitz exponent perform well in detecting signal singularity. With the bridge crack damage modeled as rotational springs based on fracture mechanics, the deflection time history of the beam under the moving load is determined with a numerical method. The continuous wavelet transformation (CWT) is applied to the deflection of the beam to identify the location of the damage, and the Lipschitz exponent is used to evaluate the damage degree. The influence of different damage degrees, multiple damage, different sensor locations, load velocity and load magnitude are studied. Besides, the feasibility of this method is verified by a model experiment.

引用

页数：22

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