某双塔大底盘超限高层动力弹塑性分析
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摘要
文章采用动力弹塑性时程分析方法评估某对称双塔大底盘超限高层结构在罕遇地震作用下的抗震性能和能力,了解其动力特性、屈服机制和破坏特征,并检验了关键薄弱部位的抗震安全性。计算结果显示该结构具有较强的抗震承载力,呈核心筒剪力墙连梁的"梁铰破坏"特征,达到了"大震不倒"的抗震设防目标。
Seismic performance and capacity of a large-base-slab and twin-tower tall building is assessed in this pape,by the way of dynamic elastic-plastic history analysis.The dynamic characteristics、yield mechaniand and destroyed form of the structure are learned,and the anti-seismic security of the key weak positions ane tested.The resultes show that the earthquake resistant abilities of the structure are good,plastic hinges formed at coupling beams of shear walls.It can fulfill the seismic fortification criterion "no collapse under severe earthquake".
Seismic performance and capacity of a large-base-slab and twin-tower tall building is assessed in this pape,by the way of dynamic elastic-plastic history analysis.The dynamic characteristics、yield mechaniand and destroyed form of the structure are learned,and the anti-seismic security of the key weak positions ane tested.The resultes show that the earthquake resistant abilities of the structure are good,plastic hinges formed at coupling beams of shear walls.It can fulfill the seismic fortification criterion "no collapse under severe earthquake".
引文
[1]白国良,李红星,张淑云.混合结构体系在超高层建筑中的应用及问题[J].建筑结构.2006,36(8):64～68.
[2]闫锋,周建龙,汪大绥,等.南京绿地紫峰大厦超高层混合结构设计[J].建筑结构,2007,37(5):20～24.
[3]薛彦涛,魏琏.底部整体裙房上部多塔结构地震反应分析[J].建筑结构学报,1989,10(6):21-29.
[4]JGJ3-2002高层建筑混凝土结构技术规程[S].中国建筑工业出版社,2002.
[5]MIDAS BUILDING用户手册(非线性分析).
[2]闫锋,周建龙,汪大绥,等.南京绿地紫峰大厦超高层混合结构设计[J].建筑结构,2007,37(5):20～24.
[3]薛彦涛,魏琏.底部整体裙房上部多塔结构地震反应分析[J].建筑结构学报,1989,10(6):21-29.
[4]JGJ3-2002高层建筑混凝土结构技术规程[S].中国建筑工业出版社,2002.
[5]MIDAS BUILDING用户手册(非线性分析).
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