复杂形体钢框架-钢板核心筒结构的抗震性能研究

李春祥 尹文汉 汪英俊

振动与冲击 ›› 2014, Vol. 33 ›› Issue (13) : 176-182.

PDF(2335 KB)
PDF(2335 KB)
振动与冲击 ›› 2014, Vol. 33 ›› Issue (13) : 176-182.
论文

复杂形体钢框架-钢板核心筒结构的抗震性能研究

  • 李春祥 尹文汉 汪英俊
作者信息 +

Seismic performance of a complex shape steel frame-steel plate shear wall core tube structure

  • Li Chun-xiang YIN Wen-han Wang Ying-jun
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摘要

首先,使用ABAQUS软件,分析研究了超高层钢框架-钢板核心筒结构(宁夏电视塔方案III)的动力特性。数值结果表明:结构方案III的侧向刚度比钢框架-支撑核心筒结构(方案I)大,扭¬平周期比减小,扭转效应相应地减弱。钢板剪力墙的条带模型(Strip Model, SM)不仅能准确地模拟出钢板的屈曲后行为,而且能明显地节省计算资源。因此,接着,基于开发出的抗震钢板剪力墙条带模型用户单元子程序(称为UEL for SM),进行9度罕遇地震(620cm/s2)作用下结构的弹塑性动力时程分析,以检查结构的变形指标和塑性发展情况。数值结果表明:结构的最大层间位移角出现在中部楼层段,结构构件的屈服机制合理体现多道抗震防线。

Abstract

The dynamic characteristics of the super high-rise steel frame-steel plate shear wall (SPSW) core (scheme III) are studied with resorting to ABAQUS code. Numerical results indicate that with respect to the super high-rise steel frame-concentrically braced frame(CBF) core (scheme I),the scheme III has larger lateral resistant stiffness, thus with the smaller ratio of the first torsional period to the first translational one (referred here to as FTFTR) and less torsional effect. Strip model (SM) for steel plate shear walls (SPSWs) using tension-only strips not only can accurately capture (satisfactorily predict) their post-buckling behaviors, can save also costs of computation. Based on the commercially available finite-element software package ABAQUS, including a user subroutine, referred to as UEL for SM, the seismic responses of the structure under the 9 degree (620cm/s2) rare earthquakes are analyzed using the dynamic elasto-plastic time-history analysis to check the deformation indices and development of the plastic zones of the structure. Numerical results demonstrate that the inelastic deformation meet the requirements of code for seismic design of buildings. Likewise the middle story segments is the weaker part, which is right the slender-waist of the structure. Therefore, the Ningxia TV tower can meet the requirement of no damage under frequent earthquake, repairable damages under basic earthquake and no collapse under rare earthquakes.

关键词

抗震性能 / 钢板核心筒 / ABAQUS / 动力特性 / 弹塑性动力时程分析

Key words

Seismic performance / Steel plate shear wall core / ABAQUS code / Dynamic characteristics / Elasto-plastic dynamic time-history analysis

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导出引用
李春祥 尹文汉 汪英俊. 复杂形体钢框架-钢板核心筒结构的抗震性能研究[J]. 振动与冲击, 2014, 33(13): 176-182
Li Chun-xiang YIN Wen-han Wang Ying-jun. Seismic performance of a complex shape steel frame-steel plate shear wall core tube structure[J]. Journal of Vibration and Shock, 2014, 33(13): 176-182

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