基于动静结合的桁架结构损伤识别研究

徐典; 杨佑发; 邓燕华

doi:10.13204/j.gyjz201107005

基于动静结合的桁架结构损伤识别研究

doi: 10.13204/j.gyjz201107005

1.
1. 重庆大学土木工程学院,重庆400045;
2.
2. 江西建设职业技术学院土木工程系,南昌330038

基金项目:

重庆市科技攻关计划项目(CSTC2009AB0040)

详细信息

作者简介:
徐典, 男, 1978年出生, 博士. E－mail:xudian2000@126.com

中图分类号: TU323.4;TU312.3
计量
- 文章访问数: 90
- HTML全文浏览量: 10
- PDF下载量: 84
- 被引次数: 0
出版历程
- 收稿日期: 2011-01-17
- 刊出日期: 2011-07-20

STUDY ON TRUSS DAMAGES DETECTION BASED ON DYNAMIC AND STATIC COMBINING METHOD

1.
1. School of Civil Engineering,Chongqing University,Chongqing 400045,China;
2.
2. Department of Civil Egineering,Jiangxi Vocational Technologic College of Construction,Nanchang 330038,China

摘要

摘要: 相对位移模态而言应变模态在桁架结构损伤识别方面更具优势。基于动态和静态损伤识别指标,提出动静相结合的新识别指标。新指标具有动测法和静测法的优点,能够在一定程度上过滤掉非损伤单元的干扰,较单独使用动态指标和静态指标更准确、更具优势。通过对一桁架结构的单处损伤和多处损伤进行数值模拟,并分别使用动态、静态和动静结合的三种指标进行损伤识别效果的比较,表明新指标更具优越性。针对算例中不同类型的构件同时损伤时,应变差较小的构件不易识别的不足,提出了二次识别或多次识别的解决方法。
- 动静结合 /
- 动态指标 /
- 静态指标 /
- 损伤识别 /
- 桁架 /
- 应变模态 /
- 应变差
Abstract: Compared with displacement mode,strain mode is better in steel truss damage detection.A new structural nondestructive detection indictor,a dynamic and static combining indictor is presented,which is based on dynamic indictor and static indictor.The new indictor has advantages of method of dynamic and static.It can filter much effect of non-damaged elements.It is much exact than only used dynamic and static indictor for damage detection.Then its availability is verified through a steel truss numerical simulation,and by comparing with dynamic and static detection indictors.The result shows that new indictor is the best.Furthermore,the second-detection and repeated detection methods are presented to solve shortcoming of little strain is difficult to detect in different kinds of components' damage in numerical example.
- dynamic and static combining /
- dynamic indictor /
- static indictor /
- damage detection /
- steel truss /
- strain mode /
- difference of strain mode

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参考文献(9)

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