基于柔度矩阵的斜拉桥拉索损伤识别研究  

Cable Damage Identification Research on Cable-Stayed Bridges Based on Flexibility Matrix

作　　者：董晓马[1] 岳鹏威[1] 

机构地区：[1]郑州航空工业管理学院土木建筑工程学院,河南郑州450015

出　　处：《中国海洋大学学报（自然科学版）》2013年第9期102-105,120,共5页Periodical of Ocean University of China

基　　金：国家自然科学基金项目(50508040);航空科学基金项目(2008ZA55004)资助

摘　　要：为实现对大跨度斜拉桥拉索损伤识别以及实际测试时结构高阶模态难以准确获取特点,提出了基于柔度差矩阵斜拉桥拉索损伤识别方法。本文首先给出柔度矩阵定义,然后阐述了基于柔度差矩阵的损伤识别机理,并以润扬大桥为试验对象模拟4种不同的损伤工况研究该方法的适用性。试验研究结果表明,该法能有效的识别出斜拉桥拉索损伤位置。In order to achieve the cable damage identification of long-span cable-stayed bridges, this pa- per proposed a new method for cable damage identification based on flexibility difference matrix theory analysis. The flexibility matrix definition was firstly advanced in this paper, and then the damage detec- tion mechanisms based on flexibility difference matrix was analyzed. Finally, the proposed method ap- plicability was studied for a domestic cable-stayed bridge. The experiment results of model cable-stayed bridges show that the proposed method is effective for cable damage identification of cable-stayed bridg- es.

关 键 词：拉索损伤 斜拉桥 柔度矩阵 

分 类 号：TB381[一般工业技术—材料科学与工程]