温度影响下结构损伤识别研究现状及展望  

A Summary Review and Advantages of Damage Identification Methods under Temperature Variation

作　　者：张涛[1] 李腾腾[1] 李阳光 

机构地区：[1]大连交通大学土木与安全工程学院,辽宁大连116028 [2]河南高速公路试验检测有限公司,河南郑州450000

出　　处：《公路工程》2014年第1期44-49,62,共7页Highway Engineering

基　　金：国家自然基金项目(51078051);大连市科学技术基金计划项目(2011J21DW006)

摘　　要：对结构健康监测研究中温度影响下结构损伤识别方法及其特点进行了介绍。近年来,温度对结构频率的影响受到越来越多的关注,一些情况下甚至达到了中等程度损伤的影响。研究人员利用这一特点,发展多种结构损伤识别方法。介绍了基于结构振动的损伤识别方法和去除温度的影响后进行损伤识别的方法。其中基于动力观察的损伤识别方法中分别总结了基于频率的方法、基于统计模式的方法、神经网络方法。文章最后对损伤识别方法将来发展需要重点解决的问题进行了综述。This paper discusses the current approaches of damage identification in structural health monitoring （SHM）and their respective features under temperature.In the actual monitoring,modal pa-rameters are affected by not only damage in structure but also temperature.Compared to changes in mo-dal parameters induced by temperature,those by local damage in structure may be much smaller.In this paper,the structural damage identification methods based on dynamic characteristics and eliminate effect of environmental algorithms is presented,and their advantages and shortcomings are analyzed.Finally, some topics which are worth studying further and the future trends for damage identification of civil engi-neering structures are proposed.

关 键 词：温度 频率 损伤识别 

分 类 号：U446.3[建筑科学—桥梁与隧道工程]