Update of control parameters of semi-actively controlled base-isolated building
The Sosokan university building has base isolation and a semi-active control system.The semi-active dampers damping coefficient is changed so as to best reproduce the optimal control force in linear-quadratic-Gaussian control.However,the implemented control gain was calculated based on the structural parameters at the design stage.In this study,we identify the buildings actual structural parameters by using observation records of the 2011 Tohoku earthquake.Dynamic response analysis is conducted by using the updated structural model and 1000 simulated ground motions.Then,the damage probability is evaluated using a fragility curve derived from the result of dynamic response analysis as well as a seismic hazard curve.Finally,the optimal control parameters are obtained to minimize the damage probability,and these parameters are implemented in the semi-active control system.
Base isolation Semi-active damper LQG control System identification
M.Kohiyama M.Omura M.Takahashi O.Yoshida K.Nakatsuka
Department of System Design Engineering,Keio University,Yokohama,Japan Graduate School of Science and Technology,Keio University,Yokohama,Japan Technical Research Institute,Obayashi Corp.,Kiyose,Japan Structural Department,Architectural and Engineering Division,Obayashi Corp.,Tokyo,Japan
国际会议
The 7th World Conference on Structural Control and Monitoring(7WCSCM)(第七届结构控制与监测世界大会)
青岛
英文
351-359
2018-07-22（万方平台首次上网日期，不代表论文的发表时间）