双塔连体结构的模拟地震振动台模型试验研究
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摘要
双塔连体结构是在两塔楼上部设置连体而形成的一种复杂的高层建筑结构形式,在我国实际工程中的应用越来越多,但目前对此类结构的抗震性能研究还不够全面和深入。针对一双塔连体高层建筑,进行了模拟地震振动台模型试验,并利用大型通用有限元分析软件ANSYS进行了结构动力特性和动力反应分析。结果表明,连体刚性连接节点及墙体采取的内设型钢的加强措施可以满足结构抗震要求;连体结构的连体部分对竖向振动效应的放大十分明显;应进一步加强连体桁架构件的整体和局部稳定性;开有较大洞口的楼层应采取改善延性的措施。
Multi-tower connected structure(MTCS) is applied widely as a new structure system of tall buildings in China,although the seismic behaviors of such complex structure are not studied systemically.In this paper,a scaled model of MTCS was fabricated and tested on a shaking table to study its dynamic characteristics and seismic responses under different seismic levels.A 3-D numerical analysis using ANSYS was conducted to evaluate the structural seismic performance.It is found that the rigid joints and the shear walls reinforced by steel meet the seismic design requirements.The amplification effect of the connecting trusses is significant when the MTCS is subjected to vertical vibration.Design measures to increase the global and local stability of the connecting truss elements are necessary.The stories with large openings are suggested to increase the ductility.
Multi-tower connected structure(MTCS) is applied widely as a new structure system of tall buildings in China,although the seismic behaviors of such complex structure are not studied systemically.In this paper,a scaled model of MTCS was fabricated and tested on a shaking table to study its dynamic characteristics and seismic responses under different seismic levels.A 3-D numerical analysis using ANSYS was conducted to evaluate the structural seismic performance.It is found that the rigid joints and the shear walls reinforced by steel meet the seismic design requirements.The amplification effect of the connecting trusses is significant when the MTCS is subjected to vertical vibration.Design measures to increase the global and local stability of the connecting truss elements are necessary.The stories with large openings are suggested to increase the ductility.
引文
[1]徐培福.复杂高层建筑结构设计[M].北京:中国建筑工业出版社,2005.(XU Peifu.Design ofcomplex high-rise structures[M].Beijing:ChinaArchitecture&Building Press,2005.(in Chinese))
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[3]聂建国,魏捷,陈戈.钢-混叠合板组合梁在连体结构工程中的应用[J].建筑结构,2002,32(4):17-18.(Nie Jianguo,Wei Jie,Chen Ge.Application ofcomposite steel-concrete beams in connecting structurebetween the buildings[J].Building Structure,2002,32(4):17-18.(in Chinese))
[4]侯家健,容柏生,韩小雷,等.双塔连体建筑的竖向抗震实用设计方法[J].建筑结构,2007,37(9):6-9.(Hou Jiajian,Rong Baisheng,Han Xiaolei,et al.Practical design method for large span corridor structurein twin-tower tall building[J].Building Structure,2007,37(9):6-9.(in Chinese))
[5]陈朝辉,傅学怡,杨想兵,等.型钢混凝土空腹桁架连体结构研究应用:深圳大学科技楼连体结构解析[J].建筑结构学报,2004,25(2):64-71.(CHENChaohui,FU Xueyi,YANG Xiangbin,et al.Study onsteel reinforced concrete vierendeel portal structure:Portal structure design of Shenzhen University Scienceand Technology Building[J].Journal of BuildingStructures,2004,25(2):64-71.(in Chinese))
[6]JGJ 3—2002高层建筑混凝土结构技术规程[S].(JGJ 3—2002 Technical specification for concretestructures of tall building[S].(in Chinese))
[7]GB 50011—2001建筑抗震设计规范[S].(GB50011—2001 Code for seismic design of buildings[S].(in Chinese))
[8]吕西林.复杂高层建筑抗震理论与应用[M].北京:科学出版社,2007.(LU Xilin.Seismic theory ofcomplex high-rise buildings with application[M].Beijing:Science Press,2007.(in Chinese))
[9]同济大学土木工程防灾国家重点实验室.舟山市普陀区东港商务中心1、2#楼结构模型模拟地震振动台试验研究报告[R].上海:同济大学,2008.(StateKey Laboratory of Disaster Reduction in CivilEngineering,Tongji University.Shaking table modeltest of Donggang Business Center Tower 1&2 in PutuoDistrict of Zhoushan City[R].Shanghai:TongjiUniversity,2008.(in Chinese))
[2]卞朝东,李爱群,娄宇,等.高层连体结构振型及其参与系数的分析[J].建筑科学,2002,18(4):20-24.(BIAN Chaodong,LI Aiqun,LOU Yu,et al.Analysis of vibration modes and participatingcoefficients for high-rise connecting structure[J].Building Science,2002,18(4):20-24.(inChinese))
[3]聂建国,魏捷,陈戈.钢-混叠合板组合梁在连体结构工程中的应用[J].建筑结构,2002,32(4):17-18.(Nie Jianguo,Wei Jie,Chen Ge.Application ofcomposite steel-concrete beams in connecting structurebetween the buildings[J].Building Structure,2002,32(4):17-18.(in Chinese))
[4]侯家健,容柏生,韩小雷,等.双塔连体建筑的竖向抗震实用设计方法[J].建筑结构,2007,37(9):6-9.(Hou Jiajian,Rong Baisheng,Han Xiaolei,et al.Practical design method for large span corridor structurein twin-tower tall building[J].Building Structure,2007,37(9):6-9.(in Chinese))
[5]陈朝辉,傅学怡,杨想兵,等.型钢混凝土空腹桁架连体结构研究应用:深圳大学科技楼连体结构解析[J].建筑结构学报,2004,25(2):64-71.(CHENChaohui,FU Xueyi,YANG Xiangbin,et al.Study onsteel reinforced concrete vierendeel portal structure:Portal structure design of Shenzhen University Scienceand Technology Building[J].Journal of BuildingStructures,2004,25(2):64-71.(in Chinese))
[6]JGJ 3—2002高层建筑混凝土结构技术规程[S].(JGJ 3—2002 Technical specification for concretestructures of tall building[S].(in Chinese))
[7]GB 50011—2001建筑抗震设计规范[S].(GB50011—2001 Code for seismic design of buildings[S].(in Chinese))
[8]吕西林.复杂高层建筑抗震理论与应用[M].北京:科学出版社,2007.(LU Xilin.Seismic theory ofcomplex high-rise buildings with application[M].Beijing:Science Press,2007.(in Chinese))
[9]同济大学土木工程防灾国家重点实验室.舟山市普陀区东港商务中心1、2#楼结构模型模拟地震振动台试验研究报告[R].上海:同济大学,2008.(StateKey Laboratory of Disaster Reduction in CivilEngineering,Tongji University.Shaking table modeltest of Donggang Business Center Tower 1&2 in PutuoDistrict of Zhoushan City[R].Shanghai:TongjiUniversity,2008.(in Chinese))
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