设置分体柱地铁车站抗震韧性数值模拟  

Numerical Study on Seismic Resilience of Split Column in Subway Station

作　　者：王海东[1,2] 龚益龙 蒋德松 谭文正 WANG Haidong;GONG Yilong;JIANG Desong;TAN Wenzheng(College of Civil Engineering,Ministry of Education,Hunan University,Changsha 410082,China;Key Laboratory of Building Safety and Energy Efficiency,Ministry of Education,Hunan University,Changsha 410082,China;Hunan Huda Civil Construction Engineering Testing Company,Changsha 410006,China;China CEC Engineering Corporation,Changsha 410114,China)

机构地区：[1]湖南大学土木工程学院,湖南长沙410082 [2]湖南大学建筑安全与节能教育部重点实验室,湖南长沙410082 [3]湖南湖大土木建筑工程检测有限公司,湖南长沙410006 [4]中国轻工业长沙工程有限公司,湖南长沙410114

出　　处：《土木工程与管理学报》2023年第2期1-6,共6页Journal of Civil Engineering and Management

基　　金：国家自然科学基金(52090082)。

摘　　要：本文提出一种适用于地铁车站的新型分体柱,运用ABAQUS软件从构件、结构两个层面对新型分体柱的延性以及可恢复性能进行了系统的分析。从构件层面,通过低周往复荷载试验模拟,得到构件的滞回曲线并提取骨架曲线,确定构件的极限位移;从结构层面,分析了传力的相关机理,与试验结果进行对比,验证分体柱数值分析的准确性。建立地铁车站结构模型,并输入了1条基岩地震波,对新型分体柱结构和整体柱结构在该地震波作用下的抗震韧性进行对比分析。计算结果表明,较地铁站中更为常见的整体柱结构,新型分体柱在地震作用下的位移响应会略有增加,剪力响应会大幅降低,能够达到预设的“中震不坏,大震可快速修复”的抗震性能目标,使构件具备功能可恢复性。A new type of splitcolumn member applied to underground structure was proposed in this paper.The ductility and seismic resilience of the new splitcolumn were analyzed systematically from component and structure by using ABAQUS software.From the component level,through the low-cycle reciprocating load test simulation,the hysteresis curve of the component was obtained and the skeleton curve was extracted to determine the limit displacement of the component;from the structural level,the relevant mechanism of force transmission was analyzed,and the test results were compared to verify the split accuracy of column numerical analysis.A structural model of the subway station was established and a bedrock seismic wave was input to compare and analyze the seismic resilience of the new split column and the general column.The calculation results show that,compared with the common monolithic column structure in subway stations,the displacement response of the new split column under the action of earthquake will be increased slightly,and the shear force response will be greatly reduced,which can achieve the seismic performance objective of“no damage under moderate earthquake,efficiently repair under severe earthquake”,and make the components have rapidly recoverable function.

关 键 词：抗震韧性 地下结构 数值模拟 分体柱 

分 类 号：TU352.11[建筑科学—结构工程]