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带支撑的钢框架结构是小高层建筑中常见的一种抗侧力体系。针对一幢12层的钢框架结构,利用PKPM软件设计了具有X型、V型和人字型3种不同支撑形式的结构体系,提供了主要构件的尺寸和结构的振动特性,然后利用有限元软件SAP 2000建立了3种支撑形式的三维有限元分析模型,进行了多遇和罕遇地震作用下的反应谱分析和Pushover的弹塑性分析,探讨了不同支撑形式对该结构动力特性和地震响应的影响。分析结果表明,3种支撑形式对结构刚度提高的效果比较接近,而V型和人字型的计算结果基本一致,小高层钢框架结构通过设置支撑体系,能够保证结构满足多遇和罕遇地震作用下我国抗震设计规范的要求,分析结果可供工程设计人员在结构选型时参考。
Steel frame structure with support is a common anti-side force system in small high-rise buildings. For a 12-story steel frame structure, PKPM software was used to design a structural system with three types of X-type, V-type and herringbone support structures, and to provide the dimension and structure vibration characteristics of the main components. Then, The software SAP2000 has established three kinds of support three-dimensional finite element analysis models, conducted response spectrum analysis and Pushover elasto-plastic analysis under frequent and rare earthquakes, and discussed the influence of different support forms on the dynamic characteristics and seismic response of the structure Impact. The results show that the three kinds of support forms have similar effects on the structural stiffness improvement, while the V-shaped and herringbone shapes are basically the same. The support structure of the high-rise steel frame structure can ensure the structure to meet the occasional and rare earthquakes Under the action of China’s seismic design code requirements, the analysis results for engineering design personnel in the selection of the structure of reference.