Structural damage identification based on modal indices and data fusion for an arch bridge of concrete-filled steel tube
Jiang Shao-Fei1;Hu Chun-Ming2
1. College of Civil Engineering, Fuzhou University, Fuzhou, Fujian 350108, China; 2. School of Civil Engineering, Shenyang Jianzhu University, Shenyang, Liaoning 110168, China
Abstract：In order to improve the diagnosis rate，a structural damage identification method based on modal indices and data fusion was proposed in this paper. In this method, multi-damage indices are used to initially diagnose damage on basis of structural vibration response. Then the weighted-average algorithm is used to fuze the multi-damage indices, and thus the fusion decision-making and damage location are made based on the peak value method. To verify the feasibility and efficiency, both single- and multi-damage patterns were simulated to identify for a two-span arch bridge of concrete-filled steel tube, and the effect of noise on identification accuracy was also taken into account. A comparison was made among the fusion method and single damage index. The results show that the proposed method can not only locate both sinle- and multi-damage patterns, but also excel single damage indices.
姜绍飞;胡春明. 基于模态指标与数据融合的钢管混凝土拱桥损伤识别[J]. , 2009, 28(12): 91-95.
Jiang Shao-Fei;Hu Chun-Ming. Structural damage identification based on modal indices and data fusion for an arch bridge of concrete-filled steel tube. , 2009, 28(12): 91-95.
2009, Vol. 28 
