Strain-based structural operational modal analysis

摘要：

　　This paper attempts to perform operational modal analysis of structures using the strain responses.The strain based vibration differential equation is derived according to the relationship between strain and displacement.Subsequently,the strain state equation is discretized from continuous time state model.The Covariance-driven stochastic subspace method is used to identify the system matrix and the observation matrix,and then the modal parameters of the structure are extracted using the strain responses under operational conditions.The feasibility of the proposed method is verified by the strain responses recorded from ambient vibration tests of a scale model of Binzhou Yellow River Bridge model in laboratory.

关键词： operational modal analysis strain-based time domain bridge model

作者: Dehui.Tang Wei-Hua.Hu Sebastian Th(o)ns Jun.Teng

作者单位: School of Civil and Environmental Engineering,Harbin Institute of Technology Shenzhen),Shenzhen,Chin Department of Civil Engineering,Technical University of Denmark,Lyngby,Denmark

会议类型: 国际会议

会议名称: The 7th World Conference on Structural Control and Monitoring(7WCSCM)(第七届结构控制与监测世界大会)

会议地点: 青岛

会议语种:英文

页码: 2735-2739

在线出版日期: 2018-07-22（万方平台首次上网日期，不代表论文的发表时间）