Semi-active isolation of an existing Italian highway bridge using seismic early warning information

摘要：

　　A hybrid control strategy based on the use of friction pendulum isolators(FPS)and magnetorheological dampers(MR)driven by a seismic early warning system(SEWS)is employed to retrofit a case study highway bridge,really existing and not able to resist seismic actions.An Italian regional control algorithm has been adopted to calibrate the MR devices according to the preliminary information of the incoming earthquake given by the SEWS.In order to reduce transmission of forces between decks and piers,FPS isolators have been interposed.The use of adaptive MR devices provided further(smart passive)source of damping to the structure,so strongly limiting demand of bending to piers,of deformation to isolators and also solving pounding problems.This work shows how semi-active control can exploit SEWS information so as to strongly reduce the seismic demand to a real case study structure.

关键词： Hybrid control Seismic early warning Magnetorheological damper Friction pendulum Seismic protection of bridges

作者: I.Nuzzo N.Caterino G.Maddaloni A.Occhiuzzi

作者单位: Department of Civil Engineering,University of Naples Parthenope,Naples,Italy Department of Civil Engineering,University of Naples Parthenope,Naples,Italy;Construction Technolo Construction Technologies Institute,National Research Council(CNR),San Giuliano Milanese,Milan,Italy

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: 735-744

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）