深圳平安国际金融中心的罕遇地震弹塑性时程分析
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摘要
深圳平安国际金融中心为一栋结构高度达540m的复杂超高层建筑,设计采用了劲性钢筋混凝土核心筒+外围巨型框架+外围巨型支撑+钢伸臂桁架的结构抗侧体系。运用ABAQUS+BEPTA程序,将梁、柱和剪力墙的弹塑性在材料的应力-应变层次上精确模拟,同时考虑结构的几何非线性,采用显式积分的方法,对该结构进行了罕遇地震作用下的弹塑性时程分析,以检验结构在大震作用下的抗震性能。结果表明,计算工程的结构形式具有较高的抗震承载力和延性,基于塑性区模型的弹塑性时程分析是保证结构大震不倒的比较有效和可靠的方法。
PINGAN IFG is a 540 meters height composite structure.Its lateral loads resist system is consist of composite steel concrete shear wall core,perimeter giant brace-frame and belt truss.Without simplification,nonlinearities of the beam,column and shear wall element are modelled in stress-strain relation level.The explicit method was implemented to integrate the dynamic equations.ABAQUS and BEPTA were used to perform the elastic-plastic time-history analysis under the rare earthquake load.The seismic performance of the structure was studied.The results show that the structure has sufficient seismic capacity and ductility.The goal of collapse prevention under expected rare earthquake is achieved,and the proposed analysis is reliable and promising.
PINGAN IFG is a 540 meters height composite structure.Its lateral loads resist system is consist of composite steel concrete shear wall core,perimeter giant brace-frame and belt truss.Without simplification,nonlinearities of the beam,column and shear wall element are modelled in stress-strain relation level.The explicit method was implemented to integrate the dynamic equations.ABAQUS and BEPTA were used to perform the elastic-plastic time-history analysis under the rare earthquake load.The seismic performance of the structure was studied.The results show that the structure has sufficient seismic capacity and ductility.The goal of collapse prevention under expected rare earthquake is achieved,and the proposed analysis is reliable and promising.
引文
[1]深圳平安国际金融中心第三方罕遇地震弹塑性时程分析报告[R].广州数力工程顾问有限公司.
[2]李志山,容柏生.高层建筑结构在罕遇地震影响下的弹塑性时程分析研究[J].建筑结构,2006,36(S1):(2-142)-(2-149).
[3]黄忠海,廖耘,李志山,等.珠江新城J2-5地块框架-核心筒超高层结构的罕遇地震弹塑性时程分析[J].结构工程师,2009,25(2):91-97.
[4]黄忠海,廖耘,李志山,等.郑州会展宾馆超高层混合结构罕遇地震弹塑性时程分析[J].建筑结构,2010,40(11):54-58.
[5]黄忠海,廖耘,王远利,等.某复杂超高层结构的罕遇地震弹塑性时程分析[J].建筑结构,2011,41(3).
[6]JGJ3—2002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,2002.
[2]李志山,容柏生.高层建筑结构在罕遇地震影响下的弹塑性时程分析研究[J].建筑结构,2006,36(S1):(2-142)-(2-149).
[3]黄忠海,廖耘,李志山,等.珠江新城J2-5地块框架-核心筒超高层结构的罕遇地震弹塑性时程分析[J].结构工程师,2009,25(2):91-97.
[4]黄忠海,廖耘,李志山,等.郑州会展宾馆超高层混合结构罕遇地震弹塑性时程分析[J].建筑结构,2010,40(11):54-58.
[5]黄忠海,廖耘,王远利,等.某复杂超高层结构的罕遇地震弹塑性时程分析[J].建筑结构,2011,41(3).
[6]JGJ3—2002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,2002.
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