An extended multiple-support response spectrum method incorporating fluid-structure interaction for seismic analysis of deep-water bridges

作     者：Wu Kun Li Ning Li Zhongxian Wu Kun;Li Ning;Li Zhongxian

作者机构：School of Transportation Science and EngineeringCivil Aviation University of ChinaTianjin 300300China Key Laboratory of Coast Civil Structures Safety of the Ministry of EducationTianjin UniversityTianjin 300350China 

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

年 卷 期：2023年第22卷第1期

页      面：211-223页

核心收录：

学科分类：070801[理学-固体地球物理学] 07[理学] 0818[工学-地质资源与地质工程] 0708[理学-地球物理学] 0837[工学-安全科学与工程] 0814[工学-土木工程] 

基　　金：National Natural Science Foundation of China under Grant Nos.51427901 and 51678407 Tianjin Municipal Education Commission under Grant No.2021KJ055 Fundamental Research Funds for the Central Universities of China under Grant No.2000560616 

主　　题：response spectrum method seismic response of bridge ground motion spatial variability fluid-structure interaction rdiation wave theory 

摘      要：The effects of ground motion spatial variability(GMSV)or fluid-structure interaction(FSI)on the seismic responses of deep-water bridges have been extensively ***,there are few studies on the seismic performance of bridges considering GMSV and FSI effects *** this study,the original multiple-support response spectrum(MSRS)method is extended to consider FSI effect for seismic analysis of deep-water *** solution of hydrodynamic pressure on a pier is obtained using the radiation wave theory,and the FSI-MSRS formulation is derived according to the random vibration *** influence of FSI effect on the related coefficients is analyzed.A five-span steel-concrete continuous beam bridge is adopted to conduct the numerical *** load conditions are designed to investigate the variation of the bridge responses when considering the GMSV and FSI *** results indicate that the incoherence effect and wave passage effect decrease the bridge responses with a maximum percentage of 86%,while the FSI effect increases the responses with a maximum percentage of 26%.The GMSV and FSI effects should be included in the seismic design of deep-water bridges.