Seismic Protection of Highway Bridges Using Performance
Based Design and Optimization
時(shí)間：2017年5月2日下午2:00
地點(diǎn)：地坤樓409
報(bào)告人：Jian Zhang副教授
主持人： 胡夏閩 教授
報(bào)告內(nèi)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.
報(bào)告人簡(jiǎn)介：張簡(jiǎn)（Zhang, Jian），現(xiàn)美國(guó)加州大學(xué)洛杉磯分校（UCLA）副教授（終身職位）。2002年博士畢業(yè)于美國(guó)加州大學(xué)伯克利分校（2002年10月至2005年6月任美國(guó)伊利諾伊厄巴納-香檳分校 UIUC，助理教授）；1994年碩士畢業(yè)于東南大學(xué)交通學(xué)院；1991年本科畢業(yè)于必贏3003no1線路檢測(cè)中心（前南京建筑工程學(xué)院）。主要研究領(lǐng)域：考慮液化和土—結(jié)構(gòu)相互作用等因素下的橋梁基于性能抗震設(shè)計(jì)、基于被動(dòng)和主動(dòng)保護(hù)裝置的結(jié)構(gòu)防災(zāi)減災(zāi)等。發(fā)表近100篇學(xué)術(shù)論文，其中30多篇期刊論文SCI被引520多次，參加近10個(gè)大會(huì)的主題邀請(qǐng)報(bào)告（ICCE 2012等）。主持美國(guó)自然科學(xué)基金、美國(guó)太平洋地震工程研究中心（PEER）科研項(xiàng)目和中國(guó)海外及港澳學(xué)者合作研究基金項(xiàng)目10余項(xiàng)。美國(guó)土木工程學(xué)會(huì)ASCE、美國(guó)地震工程研究中心EERI、美國(guó)高校地震工程研究聯(lián)盟CUREE等多個(gè)組織的會(huì)員；多個(gè)國(guó)際技術(shù)協(xié)會(huì)的主席.