Damage or change detection in a small scale model of steel bridge deck under static loading by extensometery

9th International Symposium on Steel Bridges

材料科学;运输工程

Iglouli, S.^1 ; Boumechra, N.^1 ; Hamdaoui, K.^1

Civil Engineering Department, EOLE Laboratory, University of Tlemcen, Algeria^1

关键词: Damage Identification;    Displacement and stress;    extonsometry;    Identification method;    Inverse analysis;    Inverse analysis methods;    Operational conditions;    static;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/419/1/012024/pdf
DOI  :  10.1088/1757-899X/419/1/012024

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

In order to monitor the health state of a bridge structure and to ensure that it still fulfills its functions, an identification method for possible changes or damages has been developed by their locations and the assessment of the damage or change rate. The method is based on a comparison between two structural responses (displacements or stresses) under static loadings. The first is obtained by numerical modeling of the healthy structure, where the second by experimental measurements on the real structure under its operational conditions using sensors placed on structural elements. The two responses are analyzed by an algorithm (IAFEM) based on the inverse analysis method by computing the structure's eventual change or damage factors. The method was initially tested experimentally on a small scale model of a steel bridge deck, built in laboratory, and by analyzing the displacement and stress responses of the structure.