Seismic Protection of Highway Bridges Using Performance
Based Design and Optimization

时间：2017年5月2日下午2:00

地点：地坤楼409

报告人：Jian Zhang副教授

主持人：    胡夏闽 教授

报告内容：Seismic protective devices, such as isolation and energy dissipation devices, have demonstrated great promise for seismic hazard mitigation of highway bridges. Their application has been slowed by two major challenges: (1) a comprehensive evaluation is required to assess the seismic performance of highway bridges that are equipped with protective devices, including consideration of the uncertainties inherent in ground motions and damage states of multiple critical components (e.g. columns and isolation bearings); (2) an effective design procedure that is able to consider nonlinearities in structures and protective devices, a wide choice of mechanical parameters for isolation devices, and conflicting responses of isolation bearings and piers is required to achieve the optimal design parameters of the protective devices. This presentation will summarize the research developments to facilitate the performance-based design and optimization of seismic protective devices. Through fragility functions, multi-objective optimization and the system-level performance index of repair cost ratio, a performance-based framework is developed to evaluate the effectiveness and optimal design of protective devices for seismic protection of bridges.

报告人简介：张简（Zhang, Jian），现美国加州大学洛杉矶分校（UCLA）副教授（终身职位）。2002年博士毕业于美国加州大学伯克利分校（2002年10月至2005年6月任美国伊利诺伊厄巴纳-香槟分校 UIUC，助理教授）；1994年硕士毕业于东南大学交通学院；1991年本科毕业于ylzzcom永利总站线路检测（前南京建筑工程学院）。主要研究领域：考虑液化和土—结构相互作用等因素下的桥梁基于性能抗震设计、基于被动和主动保护装置的结构防灾减灾等。发表近100篇学术论文，其中30多篇期刊论文SCI被引520多次，参加近10个大会的主题邀请报告（ICCE 2012等）。主持美国自然科学基金、美国太平洋地震工程研究中心（PEER）科研项目和中国海外及港澳学者合作研究基金项目10余项。美国土木工程学会ASCE、美国地震工程研究中心EERI、美国高校地震工程研究联盟CUREE等多个组织的会员；多个国际技术协会的主席.