弯剪型悬臂结构损伤识别的柔度法  

A Deflection Approach for Damage ldentification of Cantilever-type Structures With Bending and Shear Deformation

作　　者：李国强[1] 郝坤超[1] 陆烨[1] 

机构地区：[1]同济大学,中国上海200092

出　　处：《地震工程与工程振动》1999年第1期31-37,共7页Earthquake Engineering and Engineering Dynamics

基　　金：国家攀登计划项目"重大土木及水利工程安全性与耐久性的基础研究"

摘　　要：本文将高层建筑、烟囱等高柔结构当作弯剪型悬臂结构，提出了一种利用结构动力模态数据识别结构损伤的柔度方法。本文方法的特点是所需模态阶数少，便于实际应用。算例和试验分析表明，本文方法是可行的。Flexible structures such as tall buildings and chimneys can be regarded as cantilevers withbending and shear deformation. A deflection approach for damage identification of cantilev-er-type structures by using the vibration modes is proposed in this paper. An important ad-vantage of the approach is that the number of modes required is small, so it is easy for practi-cal application. The effectiveness of the approach is verified by numerical and experimental ex-amples .

关 键 词：悬臂结构 损伤 柔度 高层建筑 烟囱 

分 类 号：TU973.31[建筑科学—结构工程] TU323.501