Controlled rocking pile foundation system with replaceable bar fuses for seismic resilience

作     者：Cheng Zhao Li Shuai Wang Jingquan Cheng Zhao;Li Shuai;Wang Jingquan

作者机构：Bridge Engineering Research Center of Southeast UniversitySchool of Civil EngineeringSoutheast UniversityNanjing 210096China 

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

年 卷 期：2022年第21卷第3期

页      面：683-696页

核心收录：

学科分类：081406[工学-桥梁与隧道工程] 08[工学] 0814[工学-土木工程] 082301[工学-道路与铁道工程] 0823[工学-交通运输工程] 

基　　金：Supported by:National Natural Science Foundation of China under Grant Nos.52008092,U1934205,51908123 the China Postdoctoral Science Foundation under Grant No.2021M690034 the International Postdoctoral Exchange Fellowship Program of China the Zhishan Postdoctoral Fellowship Program 

主　　题：seismic resilience bridges pier controlled rocking pile foundation repairable bar fuse 

摘      要：Bridges designed following a conventional approach minimize the risk of collapse,but often require challenging,costly,and time-consuming restoration after an earthquake *** new seismic design philosophy requires bridges to maintain functionality even after severe *** this context,this paper proposes a controlled rocking pile foundation(CRPF)system and numerically evaluates bridges′degree of seismic *** CRPF system allows a pile cap to rock on a pile foundation and dissipate seismic energy through inelastic deformations of replaceable bar fuses that connect a pile cap and *** the conceptual design of the CRPF system,two analytical models were developed for a bridge pier utilizing the CRPF system and a pier designed to develop a plastic hinge in its *** analytical results indicate that,after experiencing a severe earthquake,a conventionally designed bridge pier sustained substantial damage in its column and exhibited significant residual *** contrast,a pier using the CRPF system showed negligible residual displacement and maintained elastic behavior except,as expected,for bar *** damaged fuses can be rapidly replaced to recover bridge seismic resistance following an ***,the CRPF system helps to achieve the desired postearthquake performance objectives.