Structural damage identification using additional virtual supports
HOU Jilin1, OU Jinping2, Łukasz JANKOWSKI3
1. School of Civil Engineering, Dalian University of Technology, Dalian, 116024, P. R. of China;2.School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, P. R. of China;3. Smart-Tech Centre, Institute of Fundamental Technological Research, Polish Academy of Sciences, 02-106, Warsaw, Poland
Abstract：Usually only some lower modes are identified in civil engineering, so it is hard to estimate the damage of large structure accurately. Aim to this problem, the method of adding virtual supports on the structure is proposed for structure damage identification. The virtual supports can be constructed by substructure isolation method using the linear combination of the responses. The structure with additional support is call virtual structure. The styles of the virtual structure are increased largely by adding virtual support on different places of the structure, and then the natural frequencies of all the virtual structures are collected and used for damage identification. A 3-D frame model is built for the verification of the proposed method additional virtual supports.
2013, Vol. 32 
