建筑结构学报2012，Vol.33Issue(12)：147-152,6.
基于柔度曲率曲线的结构损伤识别方法
A method for structural damage detection based on intact flexibility-curvature curve
摘要
Abstract
The flexibility curvature method was modified and a new structural damage detection indictor based on the flexibility-curvature curve was presented.In addition,the author defined intact flexibility-curvature curve of undamaged structure and used the least squares method to fit this curve.On the basis of the above-mentioned work,degree of structural damage was studied and effective damaged area proposed to assess damage degree.At last,a numerical example of a simply supported beam with single damage and two damages was used to verify this method.The results show that without modal parameters of the intact structure the new method can locate single damage and two damages of the simply supported beam.It can estimate the damage degree of the structure.Damage degree is proportional to effective damaged area of structure.At the same damage degree,effective damaged area of element close to midspan is bigger than that of element far from midspan.关键词
柔度曲率/损伤识别/完好柔度曲率曲线/最小二乘法拟合/简支梁Key words
flexibility curvature/damage detection/intact flexibility-curvature curve/least squares fit/simply beam分类
建筑与水利引用本文复制引用
徐典,杨佑发..基于柔度曲率曲线的结构损伤识别方法[J].建筑结构学报,2012,33(12):147-152,6.基金项目
重庆市科技攻关计划项目 （）
