“工字型”平面不规则钢结构的弹塑性时程分析研究  

Elastoplastic Time History Analysis of“I-shaped”Plane Irregular Steel Structure

作　　者：石若利 李其伦 SHI Ruoli;LI Qilun(School of Architecture and Planning,Yunnan University,Kunming 650500,China)

机构地区：[1]云南大学建筑与规划学院,昆明650500

出　　处：《华南地震》2021年第2期142-148,共7页South China Journal of Seismology

基　　金：国家自然科学基金项目“西南高寒地区冰积土坝料流固耦合宏细观渗流变形本构关系研究”(11862024);国家自然科学基金项目“高地震烈度高寒地区尾矿坝水力耦合作用下动力失稳机制研究”(51264037);云南大理白族新型社区建筑城镇适应性研究(2020226)联合资助。

摘　　要：为了研究“工字型”平面不规则钢框架体系结构,分析房屋的抗震技术性能影响以及此种不规则建筑的薄弱位置,应用Abaqus有限元软件建立一个三维杆系模型对“工字型”平面不规则钢框架进行模拟。通过对钢框架结构在3种不同地震波作用下进行动力弹塑性时程分析,对产生的结构顶层位移、最大层间位移、层间位移角和底部剪力进行对比研究,以及对钢结构的薄弱环节进行了分析。最后从计算结果得出结论,“工字型”不规则钢架结构的抗震性能良好,主要控制指标符合规范要求。In order to study the structure of“I-shaped”plane irregular steel frame,analyze the impact of seismic performance of buildings and the weak position of such irregular buildings,a three-dimensional bar model was established by using the finite element software ABAQUS to simulate the“I-shaped”irregular steel frame.In this paper,dynamic elastoplastic time-history analysis of steel frame structures subjected to three different kinds of seismic waves is carried out.The top displacement,the maximum interlayer displacement,the interlayer displacement angle and the bottom shear force of the structure are compared,and the weak links of the steel structure are analyzed.It is concluded from the calculation results that the“I-shaped”irregular steel frame structure has good seismic performance,and the main control indexes meet the requirements of the code.

关 键 词：钢结构 地震波 弹塑性时程分析 抗震性能 地震响应 

分 类 号：TU391[建筑科学—结构工程]