Elastoplastic bridge deck response spectra of high-speed railway simply-supported girder bridge with CRTS Ⅱ track system

作     者：LIU Bo-lun HE Chang LAI Zhi-peng JIANG Li-zhong LI Dong-ping 刘博伦;何畅;赖智鹏;蒋丽忠;李东平

作者机构：School of Civil EngineeringCentral South UniversityChangsha 410075China National Engineering Research Center of High-Speed Railway Construction TechnologyChangsha 410075China Hunan Tieyuan Civil Engineering Testing Co.Ltd.Changsha 410075China 

出 版 物：《Journal of Central South University》 (中南大学学报(英文版))

年 卷 期：2024年第31卷第11期

页      面：4174-4186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：Project(HNTY2022K03)supported by the Hunan Tieyuan Civil Engineering Testing Co.,Ltd.,China Project(52478573)supported by the National Natural Science Foundation of China 

主　　题：high-speed railway CRT SⅡtrack-bridge system bridge deck acceleration response spectra overhead contact line seismic amplification effect 

摘      要：The seismic damage to ancillary facilities on high-speed railway(HSR)bridges can affect the normal movement of *** propose the bridge deck acceleration response spectra of the typical HSR simply-supported girder bridge for simplifying the seismic responses analysis of the facilities on bridges,the finite element models of the HSR multi-span simply-supported girder bridges with CRTSII track were established,and the numerical model was validated by ***,the effects of the span number,peak ground acceleration(PGA),pier height on the seismic acceleration and response spectra of the bridge deck were ***,the bridge acceleration amplification factor curves and bridge deck response spectra with different PGAs and pier heights were *** formula for bridge deck acceleration amplification factor,with a 95%guarantee rate,was ***,the finite element models of the overhead contact lines(OCL)mounted on rigid base and bridges were established to validate the fitted *** results indicated that the maximum seismic acceleration response is in the midspan of the *** proposed formula for the bridge deck acceleration response spectra can be used to analyze the earthquake response of the OCL and other ancillary facilities on HSR simply-supported girder *** bridge deck acceleration response spectra are conservative in terms of structural safety and can significantly improving the analysis efficiency.