Study on Two-Dimensional Damage Identification of T-Beam Based on
Gaussian Curvature Mode Difference

doi:10.3969/j.issn.1674-0696.2012.04.03

Journal of Chongqing Jiaotong University(Natural Science) ›› 2012, Vol. 31 ›› Issue (4): 747-750.DOI: 10.3969/j.issn.1674-0696.2012.04.03

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Study on Two-Dimensional Damage Identification of T-Beam Based on Gaussian Curvature Mode Difference

Han Xi¹，Li Qing-da¹，Zhong Li²，Yang Ke¹

1.School of Civil Engineering ＆ Architecture,Chongqing Jiaotong University,Chongqing 400074,China; 2.School of Mechatronics ＆ Automotive Engineering,Chongqing Jiaotong University,Chongqing 400074,China

Received:2011-12-14 Revised:2011-12-26 Online:2012-08-15 Published:2015-03-12

基于高斯曲率模态差的T 梁结构二维损伤识别研究

韩西¹，李庆达¹，钟厉²，杨科¹

1. 重庆交通大学土木建筑学院，重庆400074; 2. 重庆交通大学机电与汽车工程学院，重庆400074

作者简介:韩西( 1964—) ，男，重庆人，教授，博士，主要从事结构力学、振动工程方面的研究。E-mail：xihan@cquc。Edu.cn.
基金资助:
重庆市交通委员会科技项目( 701487)

Abstract

Abstract: Curvature mode is a sensitive indicator to identify damage． Most researches on damage identification based on curvature mode are limited to one-dimensional structure． Damage identification based on Gaussian curvature mode was presented to extend curvature mode into two-dimensional structure，considering the degree of bending about two-dimensional structure of acceleration mode shape in the vertical level and horizontal level and locating the position of damage by calculating the Gaussian curvature difference of acceleration mode of structural damage on before and after． Mode test of the combination of T-beam structure and its results analysis show the feasibility of the proposed method．

Key words: Gaussian curvature, combination of T-beam structure, damage identification, two-dimensional identification

摘要： 曲率模态是识别损伤的敏感指标，基于曲率模态的损伤识别研究大多局限于一维结构。为将曲率模态的损伤识别方法推广到二维结构，提出了基于高斯曲率模态的损伤识别方法，综合考虑二维结构的加速度振型曲面在纵向和横向上的弯曲程度，通过计算结构损伤前后加速度振型的高斯曲率差来判断结构损伤的位置。T梁组合结构的模态试验及试验分析结果验证了该方法的可行性。

关键词: 高斯曲率, T梁组合结构, 损伤识别, 二维识别

CLC Number:

U441⁺.4

Han Xi,Li Qing-da,Zhong Li,Yang Ke. Study on Two-Dimensional Damage Identification of T-Beam Based on Gaussian Curvature Mode Difference[J]. Journal of Chongqing Jiaotong University(Natural Science), 2012, 31(4): 747-750.

韩西,李庆达,钟厉,杨科. 基于高斯曲率模态差的T 梁结构二维损伤识别研究[J]. 重庆交通大学学报（自然科学版）, 2012, 31(4): 747-750.

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Study on Two-Dimensional Damage Identification of T-Beam Based on Gaussian Curvature Mode Difference

基于高斯曲率模态差的T 梁结构二维损伤识别研究

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