文献类型：期刊文献

英文题名：An Improved Static Residual Force Algorithm and Its Application in Cable Damage Identification for Cable-Stayed Bridges

作者：Fang, Rui[1,2];Wu, Yanting[1];Wei, Wang[1];Na, Li[1];Biao, Qian[2];Jiang, Ping[1];Yang, Qiuwei[3]

机构：[1]Shaoxing Univ, Sch Civil Engn, Shaoxing 312000, Peoples R China;[2]Tongchuang Engn Design Co Ltd, Shaoxing 312000, Peoples R China;[3]Ningbo Univ Technol, Sch Civil & Transportat Engn, Ningbo 315211, Peoples R China

年份：2022

卷号：12

期号：6

外文期刊名：APPLIED SCIENCES-BASEL

收录：SCI-EXPANDED(收录号：WOS:000775981400001)、、Scopus(收录号：2-s2.0-85127008328)、WOS

语种：英文

外文关键词：damage identification; residual force vector; static load; displacement; single tower cable-stayed bridge

外文摘要：For cable-stayed bridges, cables are very important components to maintain the safety of the whole bridge structure. It is well-known that change in cable force reflects the health of the cable-stayed bridge. Therefore, it is necessary to detect and quantify local damage in cables prior to the occurrence of a failure. To this end, an improved residual force algorithm independent of static load vector was proposed in this study. The proposed method mainly makes use of the particularity that only a few coefficients in the residual force and static load vectors are nonzero. By combining two different static loading modes, a new damage indicator vector was defined in the method for damage localization and quantification. Compared with existing static residual force methods, the significant advantage of the proposed algorithm is that the specific value and loading position of the static load are not required in the damage identification process. This special advantage causes this method to not require special static loading, but instead uses any load vehicle. This advantage can make the operation process of structural damage identification based on static tests easier and faster. A single tower cable-stayed bridge structure was used to verify the feasibility of the proposed method in cable damage identification. It was shown that the proposed method successfully identified cable damage, even if the value and loading point of the static load were uncertain.