[1]孙增寿,韩建刚,任伟新..基于曲率模态和小波变换的简支梁桥损伤识别方法[J].郑州大学学报(工学版),2005,26(03):24-27,31.[doi:10.3969/j.issn.1671-6833.2005.03.007]
　Sun Zengshou,Han Jiangang,Ren Weixin.Damage recognition method of simple supported girder bridge based on curvature mode and wavelet transform[J].Journal of Zhengzhou University (Engineering Science),2005,26(03):24-27,31.[doi:10.3969/j.issn.1671-6833.2005.03.007]
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基于曲率模态和小波变换的简支梁桥损伤识别方法()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
26
期数:
2005年03期
页码:
24-27,31
栏目:
出版日期:
1900-01-01

文章信息/Info

Title:
Damage recognition method of simple supported girder bridge based on curvature mode and wavelet transform
作者:
孙增寿; 韩建刚; 任伟新.
福州大学土木建筑工程学院,福建,福州,350002;州大学土木工程学院,河南,郑州,450002, 福州大学土木建筑工程学院,福建,福州,350002
Author(s):
Sun Zengshou; Han Jiangang; Ren Weixin
关键词:
小波变换;  曲率模态;  损伤识别
Keywords:
DOI:
10.3969/j.issn.1671-6833.2005.03.007
文献标志码:
A
摘要:
小波变换具有在时域和频域内表征信号局部特性的能力,能够在不同尺度下对结构响应中的突变信号进行放大和识别.本文在曲率模态基础上,提出了一种基于小波变换的梁式结构损伤识别方法.利用双正交小波函数对损伤前后结构的曲率模态进行小波变换,通过小波变换系数的变化和分布情况建立了结构损伤指标,可判定损伤存在,确定损伤位置和估计损伤程度.并通过一简支梁桥中T形截面梁的数值模拟对该方法进行了验证.
Abstract:
Wavelet transform has the ability to characterize the local characteristics of signals in the time and frequency domains, and can amplify and identify abrupt signals in structural responses at different scales. Based on the curvature mode, a beam structure damage recognition method based on wavelet transform is proposed. The wavelet transform of the curvature mode of the structure before and after injury is carried out by using the biorthogonal wavelet function, and the structural damage index is established through the change and distribution of the wavelet transform coefficient, which can determine the existence of damage, determine the damage location and estimate the degree of damage. The method is verified by numerical simulation of T-shaped cross-section beam in a simple supported beam bridge.

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更新日期/Last Update: 1900-01-01