Model Updating of Earthquake-Ezcited Building Structures with Friction Dampers

摘要：

The parameter identification and model updating of building structures with friction dampers are actively carried out in this study. A new approach is proposed for identifying the structural stiffness parameters and updating analytical model by using the modal information of structures without/with friction dampers. An identification algorithm for stiffness parameters is first developed based on the full measurement information of natural frequencies and mode shapes. Then, the approach is improved by taking account of the sparsity properties of structural stiffness matrix for constructing a new model updating approach based on added friction dampers. The relationship between dynamic degree-of-freedom (DOF) and the number of modal shapes utilized in analysis is also established. The observations from numerical investigation demonstrate that the performance for parameter identification and model updating are satisfactory because the underdetermining identification problem is transformed into the overdetermining problem by using the proposed approach.

关键词： Parameter identification Model updating Modal information Friction damper

作者: Bo Chen Jin Zheng Jianping Wang

作者单位: Key laboratory of Roadway Bridge and Structural Engineering, Wuhan University of Technology, Wuhan, Design Institute of Wuhan University of Technology, Wuhan, China Guizhou University for Nationalities, Guiyang, China

会议类型: 国际会议

会议名称: The First Anniversary of Wenchuan Earthquake(纪念汶川地震一周年国际学术会议)

会议地点: 成都

会议语种:英文

页码: 174-178

在线出版日期: 2009-05-10（万方平台首次上网日期，不代表论文的发表时间）