PARAMETER IDENTIFICATION OF A MODEL CONCRETE FRAME STRUCTURE

摘要：

Frame structure is an ordinary type of building structures and also a primary research objective in structural damage diagnosis. This paper presents a identification method of physics parameters in a model reinforced concrete frame structure based on the sensitivity analysis and measured natural frequencies and modal shape. In finite element analysis the rotation of joints in the frame structure is considered,then the rotation variables are eliminated by the static condensation method and the total stiffness matrix is obtained. From parameter identification results it is shown that modal characteristics of the frame structure can be accurately computed by the analytical model used in this paper. The physics parameters identified may change with the variable combination of measured information. Based on the assumed probability distribution,using Monte Carlo simulation method,the randomness of modal parameters are transferred to the physics parameters,then the randomness of physics parameters can be calculated.

关键词： Frame structures Parameter identification Modal parameters Sensitivity analysis Monte carlo simulation method

作者: Gao-Lie Wu Wei-Jian Yi Li Xu

作者单位: Hunan University Civil Engineering College,Changsha 410082 P.R.China Hunan University Civil Engineering College,Changsha 410082 P.R. China Guangzhou University Earthquake Engineering Research Test Center,Guangzhou 510405 P.R. China

会议类型: 国际会议

会议名称: The Eleventh International Symposium on Structural Engineering(第十一届结构工程国际研讨会)

会议地点: 广州

会议语种:英文

页码: 563-568

在线出版日期: 2010-12-01（万方平台首次上网日期，不代表论文的发表时间）