叠合装配式地铁车站结构地震动力响应及减震措施研究  

Study on seismic dynamic responses and damping measures of the superimposed prefabricated subway station structure

作　　者：于仲洋 张静堃 邱艳佳 张鸿儒[2] 李昊[2] YU Zhongyang;ZHANG Jingkun;QIU Yanjia;ZHANG Hongru;LI Hao(The First Construction Engineering Company Ltd.of China Construction Second Engineering Bureau,Beijing 100176,China;School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China;Changjiang Institute of Survey,Planning,Design and Research,Wuhan 430010,China)

机构地区：[1]中建二局第一建筑工程有限公司,北京100176 [2]北京交通大学土木建筑工程学院,北京100044 [3]长江勘察规划设计研究院,湖北武汉430010

出　　处：《地震工程与工程振动》2023年第4期235-244,共10页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金项目(51678042,52078033)。

摘　　要：地铁车站结构的减隔震技术目前仍处于起步阶段,缺少针对各类车站减隔震技术机理的系统性研究,故在“双碳”背景下开展装配式地铁车站的减隔震技术研究具有重要科学意义。以新型的“预制+现浇”的地铁车站为背景,建立叠合装配式地铁车站结构的有限元模型;以提升结构中柱抗震性能为目的,在中柱端部设置弹性滑移支座;利用动力时程分析法对比分析不同减隔震措施对叠合装配式车站结构地震响应特性的影响。结果表明:隔震支座的设置改善了车站结构的传力机制,抗震性能更好的侧墙承受了更多的地震荷载,有效地削弱了结构中柱的地震损伤程度;当隔震支座设置在柱顶时,整体隔震效果最为合理;隔震支座的摩擦系数对叠合装配式车站的抗震性能影响明显,且摩擦系数越小,对提高结构中柱的抗震性能越有利。研究结果可为类似地铁车站结构的减隔震工程提供参考。The shock isolation technology for subway station structures is still in its infancy,which is currently lack of systematic research on the mechanism of shock isolation technology for various stations.Therefore,it is of great scientific significance to discuss the shock isolation technology for prefabricated subway stations under the background of“carbon peak and carbon neutrality”.A finite element model of the superimposed prefabricated subway station structure was established based on the new“prefabricated and cast-in-place”subway station.In order to improve the seismic resistance of the column,the elastic sliding support was provided at the end of the interior column.The influence of different shock absorption measures on seismic response characteristics of superimposed prefabricated station structures was compared and analyzed by dynamic time history analysis.Results showed that the isolation bearings improved the force transmission mechanism of the station structure.The sidewalls with better seismic performance bore more seismic loads,which effectively reduced the seismic damage of the interior column.The overall isolation effect was the most reasonable when the isolation bearing was set at the top of the interior column.The friction coefficient of isolation bearings had an obvious effect on the seismic resistance of superimposed prefabricated stations.The smaller the friction coefficient is,the better the seismic resistance of the interior column is.The above conclusions can provide a reference for the shock isolation engineering similar to subway station structures.

关 键 词：装配式车站 地下结构 地震动力响应 减震措施 隔震支座 

分 类 号：TU921[建筑科学—建筑设计及理论] TU435