摘要
为研究重力-抗侧力可分钢框架体系的受力性能,以某个实际工程为建筑方案,利用ETABS和PKPM软件建立了15层的重力-抗侧力可分钢框架体系和刚接钢框架体系的结构模型,在地震作用下对2种体系进行弹性和弹塑性分析。经过对比分析后得到了以下结论:在用钢量基本相同的情况下,重力-抗侧力可分钢框架体系的抗侧刚度和结构性能与刚接钢框架体系的抗侧刚度和结构性能相近;重力-抗侧力可分钢框架体系的抗弯框架受力充分,塑性铰较少,能够更好地耗散地震能量;重力-抗侧力可分钢框架体系内侧梁柱的截面较小,能够有效解决钢结构建筑露梁露柱的问题;重力-抗侧力可分钢框架体系与刚接钢框架体系相比拥有大量的铰接节点,能够降低施工难度,大大缩短建设周期,具有更好的经济效益和社会效益。
The structural models of a 15-story separable gravity-lateral resistant steel frame system(SGLSF)and a rigid steel frame system(RSF)based on practical engineering are built by using ETABS and PKPM softwares in this paper,to study the mechanical performance of the separable gravity-lateral resistant steel frame system.Based on the completed elastic and elastic-plastic analysis of two systems under earthquake action,the conclusions are given as follows.The SGLSF can achieve similar lateral stiffness and seismic performance as that of RSF under the condition of same steel consumption.The moment-resisting frame of the SGLSF can take force fully with fewer plastic hinges so that it can dissipate more seismic energy.The internal beams and columns of the SGLSF can be designed with a smaller dimension to effectively solve the problem of exposed beams and columns in steel structural buildings.Compared to the RSF,the SGLSF has more amounts of hinged joints which can reduce construction difficulty.At the same time,it would shorten construction period greatly so as to bring more economic benefits and social benefits.
作者
张爱林
林海鹏
张艳霞
朱莉娜
文闻
ZHANG Ailin;LIN Haipeng;ZHANG Yanxia;ZHU Lina;WEN Wen(School of Civil and Transportation Engineering,Bejing University of Civil Engineering and Architeture,Beijing 100044,China;Beijing Advanced Innovation Center for Future Urban Design,Beijing University of Civil Engineering and Architecture,Beiing 100044,China;Beijing Engineering Research Center of High Rise and Large Span Prestressed Steel Structure,Beiing University of Technology,Beijing 100124,China)
出处
《建筑钢结构进展》
CSCD
北大核心
2020年第3期37-47,共11页
Progress in Steel Building Structures
基金
“十三五”国家重点研发计划(2017YFC0703806)
长江学者和创新团队发展计划(IRT_17R06)。
关键词
重力-抗侧力可分钢框架体系
受力性能
弹性分析
弹塑性分析
露梁露柱
separable gravity-lateral resistant steel frame system
mechanical performance
elastic analysis
elastic-plastic analysis
exposed beam and column
