闽投运营中心主体结构动力弹塑性分析
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摘要
为保证结构逆作法的施工质量和地铁车站施工安全,闽投运营中心采用框架-支撑核心筒结构体系。该结构是指将框筒结构的钢筋混凝土核心筒替换成支撑框架筒的结构体系。为检验该结构体系的抗震性能,采用PERFORM-3D软件建立结构三维空间模型,输入7组地震波进行弹塑性时程分析,得到结构的变形、内力及能量情况。结果表明:支撑核心筒和外框架可组成有效的多道抗震防线。钢支撑和框架梁是结构的主要抗侧力构件和耗能构件。同时,框架-支撑核心筒结构表现出与框筒结构一致的内力、变形特征。结构的弹性和弹塑性层间位移角均满足框筒结构水平位移限值要求。可见,框架-支撑核心筒结构体系具有良好的抗震性能,可用于其他类似工程。
To ensure structural construction quality of the top-down method and construction safety of subway station,the frame-bracing core tube,which is the structural system that replaces core-tube of frame-core wall structure with brace frame-cube,is adopted in Mintou Operation Center.A 3-D finite element model is established by employing the FEM package PERFORM-3 D.Seven earthquake waves are inducted to the FEM model.Elastic and elasto-plastic analysis conducted to get the structural displacements,member forces and energy.The results show that:The bracing core tube and frame could form effective multiple seismic fortification lines.Braces and frame beams are the main force resistance members and energy dissipation members.Meanwhile,the frame-bracing core tube structure and the frame-corewall structure are the same in internal force and deformation.The maximum story drift ratio could conform to the relevant code requirement.The frame-bracing core tube structure has an excellent seismic performance and is able to apply to other similar projects.
To ensure structural construction quality of the top-down method and construction safety of subway station,the frame-bracing core tube,which is the structural system that replaces core-tube of frame-core wall structure with brace frame-cube,is adopted in Mintou Operation Center.A 3-D finite element model is established by employing the FEM package PERFORM-3 D.Seven earthquake waves are inducted to the FEM model.Elastic and elasto-plastic analysis conducted to get the structural displacements,member forces and energy.The results show that:The bracing core tube and frame could form effective multiple seismic fortification lines.Braces and frame beams are the main force resistance members and energy dissipation members.Meanwhile,the frame-bracing core tube structure and the frame-corewall structure are the same in internal force and deformation.The maximum story drift ratio could conform to the relevant code requirement.The frame-bracing core tube structure has an excellent seismic performance and is able to apply to other similar projects.
引文
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[10] 韦锋,陈文科,傅剑平,等.8度区框-剪结构中框架在罕遇地震下的反应性态[J].土木建筑与环境工程,2009,31(6):60-65.(in Chinese) Wei Feng,Chen Wenke,Fu Jianping,et al.Seismic behaviors of frames inFrame-wall structures under rare earthquakes on the zone of fortification intensity 8 in China[J].Journal of Civil,Architectural & Environmental Engineering,2009,31(6):60-65.(in Chinese)
[11] 缪志伟,吴耀辉,马千里,等.框架-核心筒高层混合结构的三维空间弹塑性抗震分析[J].建筑结构学报,2009,30(4):119-129. Miao Zhiwei,Wu Yaohui,Ma Qianli,et al.Seismic performance evaluation using nonlinear time history analysis with three-dimensional structural model for a hybrid frame-core tube structure[J].Journal of Building Structures,2009,30(4):119-129.(in Chinese)
[12] 尚春雨,丰茂东.PERFORM-3D快速精确建模及实例详解[M].北京:中国建筑工业出版社,2015.
[13] 杨溥,赖明.结构时程分析法输入地震波的选择控制指标[J].土木工程学报,2000,33(6):33-37.
[2] 傅学怡.实用高层建筑结构设计[M].北京:中国建筑工业出版社,2010. Fu Xueyi.Applied structural design of tall building[M].Beijing:China Architecture & Building Press,2010.(in Chinese)
[3] 万怡秀,严开涛,吴昭华,等.超高层建筑地下工程逆作法方案优选[J].建筑结构,2013(11):1-6. Wan Yixiu,Yan Kaitao,Wu Zhaohua,et al.Scheme optimization of top-down construction method for underground engineering of super high-rise buildings[J].Building Structure,2013(11):1-6.(in Chinese)
[4] 姜向红,丁义平,张庆福.复杂环境中高层建筑双向同步施工设计研究[J].地下空间与工程学报,2011,7(5):919-925. Jiang Xianghong,Ding Yiping,Zhang Qingfu.Study of bidirectional synchronization construction design for high-rise buildings in complex geological environment[J].Chinses Journal of Underground Space and Engineering,2011,7(5):919-925.(in Chinese)
[5] 韩林海.钢管混凝土结构——理论与实践 [M].北京:科学出版社,2007. Han Linhai.Steel tube concrete:theory and practice[M].Beijing:Science Press,2007.(in Chinese)
[6] FEMA 356.Pre-standard and commentary for the seismic rehabilitation of buildings [S].Report FEMA356,Federal Emergency Management Agency,Washington DC,2000.
[7] 中华人民共和国住房和城乡建设部.GB 50011—2010 建筑抗震设计规范[S].北京:中国建筑工业出版社,2010. Ministry of Housing and Urban-Rural Development of People’s Republic of China.GB 50011—2010 Code for seismic design of buildings [S].Beijing:Building Industry Press of China,2010.(in Chinese)
[8] 中华人民共和国住房和城乡建设部.JGJ 3—2010.高层建筑混凝土结构技术规程[S].北京:中国建筑工业出版社,2010. Ministry of Housing and Urban-Rural Development of People’s Republic of China.JGJ 3—2010 Technical specification for concrete structures of tall building[S].Beijing:Building Industry Press of China,2010.(in Chinese)
[9] 黄忠海,刘付钧,李盛勇,等.深圳湾总部大楼罕遇地震作用弹塑性分析[J].建筑结构学报,2016,37(2):19-25. Huang Zhonghai,Liu Fujun,Li Shengyong,et al.Elasto-plastic time-history analysis of the Shenzhen Bay Headquarters under rare earthquake[J].Journal of Building Structures,2016,37(2):19-25.(in Chinese)
[10] 韦锋,陈文科,傅剑平,等.8度区框-剪结构中框架在罕遇地震下的反应性态[J].土木建筑与环境工程,2009,31(6):60-65.(in Chinese) Wei Feng,Chen Wenke,Fu Jianping,et al.Seismic behaviors of frames inFrame-wall structures under rare earthquakes on the zone of fortification intensity 8 in China[J].Journal of Civil,Architectural & Environmental Engineering,2009,31(6):60-65.(in Chinese)
[11] 缪志伟,吴耀辉,马千里,等.框架-核心筒高层混合结构的三维空间弹塑性抗震分析[J].建筑结构学报,2009,30(4):119-129. Miao Zhiwei,Wu Yaohui,Ma Qianli,et al.Seismic performance evaluation using nonlinear time history analysis with three-dimensional structural model for a hybrid frame-core tube structure[J].Journal of Building Structures,2009,30(4):119-129.(in Chinese)
[12] 尚春雨,丰茂东.PERFORM-3D快速精确建模及实例详解[M].北京:中国建筑工业出版社,2015.
[13] 杨溥,赖明.结构时程分析法输入地震波的选择控制指标[J].土木工程学报,2000,33(6):33-37.