FREQUENCY AND SPATIAL DOMAIN DECOMPOSITION FOR IDENTIFYING OPERATIONAL MODAL PARAMETERS OF BRIDGE

摘要：

For the operational excitation of bridge was difficult to be detected in practice, a frequency and spatial domain decomposition method was presented in this paper to identify modal parameters. Responding signal excited by traveling vehicle was utilized to estimate non-partial spectrum density. Then singular value decomposition technology was adopted to separate the signal space from the noise space, and modal indicator function was obtained to discern near, even overlapped modal parameters. A real bridge modal experiment was employed to validate this method.

关键词： Bridge modal identification frequency and spatial domain decomposition operational modal

作者: J. Wang S. Xu L. M. Zhang

作者单位: College of Civil Engineering, Nanjing University of Technology, Nanjing, China Jiangsu Transportation Research Institute, Nanjing, China Institute of Vibration Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, Chi

会议类型: 国际会议

会议名称: 2007年土木工程结构创新与可持续发展国际会议(The International Symposium on Innovation & Sustainability of Structures in Civil Engineering)

会议地点: 上海

会议语种:英文

页码: 1394-1401

在线出版日期: 2007-11-28（万方平台首次上网日期，不代表论文的发表时间）