Resilience-incorporated seismic risk assessment of precast concrete frames with“dry”connections

作     者：Wu Chenhao Tang Yuchuan Cao Xuyang Wu Gang Wu Chenhao;Tang Yuchuan;Cao Xuyang;Wu Gang

作者机构：Key Laboratory of Concrete and Prestressed Concrete Structures of the Ministry of EducationNanjing 211102China Department of Civil and Environmental EngineeringUniversity of CaliforniaLos AngelesCA 90095USA School of Civil EngineeringSoutheast UniversityNanjing 211102China College of Civil and Transportation EngineeringHohai UniversityNanjing 210024China 

出 版 物：《Earthquake Engineering and Engineering Vibration》 (地震工程与工程振动（英文刊）)

年 卷 期：2024年第23卷第2期

页      面：403-425页

核心收录：

学科分类：081405[工学-防灾减灾工程及防护工程] 08[工学] 0818[工学-地质资源与地质工程] 081402[工学-结构工程] 081304[工学-建筑技术科学] 0813[工学-建筑学] 0814[工学-土木工程] 

基　　金：National Key Research and Development Program of China under Grant No.2022YFC3803004 Postgraduate Research&Practice Innovation Program of Jiangsu Province under Grant No.SJCX20_0031 Fundamental Research Funds for the Central Universities under Grant No.3205002108D 

主　　题：precast concrete frame non-emulative precast system seismic resilience seismic risk functional recovery 

摘      要：A resilience-incorporated risk assessment framework is proposed and demonstrated in this study to manifest the advantageous seismic resilience of precast concrete frame(PCF)structures with“dryconnections in terms of their low damage and rapid *** framework integrates various uncertainties in the seismic hazard,fragility,capacity,demand,loss functions,and post-earthquake *** this study,the PCF structures are distinguished from ordinary reinforced concrete frame(RCF)structures by characterizing multiple limit states for the PCF based on its unique damage ***,probabilistic story-wise pushover analyses are performed to yield story-wise capacities for the predefined limit *** the seismic resilience analysis,a step-wise recovery model is proposed to idealize the functionality recovery process,with separate considerations of the repair and non-repair *** recovery model leverages the economic loss and downtime to delineate the stochastic post-earthquake recovery curves for the resilience loss *** such,contingencies in the probabilistic post-earthquake repairs are incorporated and the empirical judgments on the recovery parameters are largely *** proposed framework is demonstrated through a comparative study between two“dryconnected PCFs and one RCF designed as alternative structural systems for a prototype *** results from the risk quantification indicate that the PCFs show reduced loss hazards and lower expected losses relative to the ***,the PCF equipped with energy dissipation devices at the“dryconnections largely reduces the expected economic loss,downtime,and resilience loss by 29%,56%,and 60%,respectively,compared to the RCF.