【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。更多还原

【Abstract】 In order to achieve the cable damage identification of long-span cable-stayed bridges,this paper 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 detection mechanisms based on flexibility difference matrix was analyzed.Finally,the proposed method applicability was studied for a domestic cable-stayed bridge.The experiment results of model cablestayed bridges show that the proposed method is effective for cable damage identification of cable-stayed bridges.更多还原