采用装配式钢管混凝土柱的地下车站结构抗震性能研究  

Study on seismic behavior of underground station structure with prefabricated concrete-filled steel tube central column

作　　者：邬歆 许紫刚 庄海洋 李晟 WU Xin;XU Zigang;ZHUANG Haiyang;LI Sheng(Nanchang Railway Survey and Design Institute Co.,Ltd.,Nanchang 330002,China;School of Civil Engineering and Architecture,East China Jiaotong University,Nanchang 330013,China;Institute of Geotechnical Engineering,Nanjing Tech University,Nanjing 210009,China)

机构地区：[1]南昌铁路勘测设计院有限责任公司,江西南昌330002 [2]华东交通大学土木建筑学院,江西南昌330013 [3]南京工业大学岩土工程研究所,江苏南京210009

出　　处：《世界地震工程》2023年第4期107-115,共9页World Earthquake Engineering

基　　金：国家自然科学基金(52108453,51978333);江西省自然科学基金(20212BAB214014,20232BAB204084)。

摘　　要：采用钢管混凝土中柱可明显提升地下车站结构中柱的抗震性能,其中梁柱之间采用快速连接装置的装配式中柱又可进一步减小中柱的地震损伤。基于上述已有的研究结果,本文选取某单层双跨地下车站结构,分别建立了传统现浇中柱和装配式中柱的土-地下结构非线性静动力耦合相互作用的三维有限元分析模型,对比分析了快速连接装置壁厚对地下车站结构整体抗震性能的影响规律。结果表明:在保证结构整体安全性能和经济效益的同时,连接装置壁厚取为30~40 mm可最大程度地发挥预制钢管混凝土柱及其快速连接装置的减震效能。The use of concrete-filled steel tube(CFST)central columns can significantly improve the seismic performance of the columns of underground station structures,and the prefabricated columns with quick connection devices between beams and columns can further reduce the seismic damage of the central columns.Based on the previous research results,three dimensional finite element analysis models of nonlinear static and dynamic coupling interaction between soil and underground structure of traditional cast-in-place central column and prefabricated central column are established respectively by selecting a single storey and double span underground station structure,and the influence of wall thickness of rapid connection device on the overall seismic performance of the station is analyzed.The results show that,while ensuring the overall safety and economic benefits of the structure,the wall thickness of the connection device is 30~40 mm,which can maximize the seismic mitigation efficiency of the prefabricated CFST column and its rapid connection device.

关 键 词：地下车站结构 钢管混凝土柱 装配式 抗震性能 地震损伤 

分 类 号：TU317.1[建筑科学—结构工程]