Seismic responses of an intensively constructed metro station-passageway-shaft structure system  

作　　者：Ruohan LI Yong YUAN Hong CHEN Xinxing LI Emilio BILOTTA 

机构地区：[1]Department of Geotechnical Engineering,Tongji University,Shanghai 200092,China [2]Department of Civil,Architectural and Environmental Engineering,University of Naples Federico II,Naples 80125,Italy [3]State Key Laboratory of Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,China [4]Shanghai Tunnel Engineering&Rail Transit Design and Research Institute,Shanghai 200235,China

出　　处：《Frontiers of Structural and Civil Engineering》2024年第5期760-775,共16页结构与土木工程前沿（英文版）

基　　金：The authors are grateful for the financial support from National Natural Science Foundation of China(Grant Nos.52061135112 and U1934210);the National Key Research and Development Program of China(No.2021YFE0114100);the China Scholarship Council(No.202206260188).

摘　　要：Intensive construction methods offer benefits for metro station development,yet they present challenges for seismic design due to the spatially asymmetric configuration of passageway-shaft structures.In this study,a detailed numerical model of a station-passageway-shaft structure system built using intensive construction methods was developed and the deformation and damage modes under seismic loadings were analyzed.The results indicate that inconsistent deformation between the shaft and the station generates interaction through the connecting passageway,leading to damage near the opening of the station structure and both ends of the connecting passageway Damage is more severe under longitudinal excitation.Compared with the opening plan that spans four segments,the opening plan that spans five segments exacerbates the overall degree of damage to the structure system.Under transverse excitation,the presence of interior structures intensifies the damage to the station and connecting passageway,while with such internal structure in place the impact is relatively minor under longitudinal excitation.Reinforcement with steel segments near the station opening can appreciably attenuate the damage.In contrast,introducing flexible joints at both ends of the connecting passageway intensifies the damage.Hence,reinforcement using steel segments emerges as an optimal seismic mitigation strategy.

关 键 词：EARTHQUAKE intensive construction metro station numerical simulation 

分 类 号：TU311.3[建筑科学—结构工程]