As a kind of economical and efficient steel structure system, the staggered truss steel structure emphasizes the column-free characteristics of the structure and enables the structure to have a large bay with double column spacing. It can be arranged flexibly according to needs in building, so it is favored in the construction of hospitals and hotels. In this paper, the finite element analysis software SAP2000 was used to establish the three types of staggered-truss steel structure system models, which are the Vallon, Palmer and hybrid. The response spectrum and time-history method combined with the steel amount are used for comparative analysis, and considering the economical benefit and safety, it is concluded that staggered truss steel structure system should be adopted in practical projects.%交错桁架钢结构作为一种经济、高效的钢结构体系,突显其结构内无柱特性,使结构内部获得两倍柱距的大开间,建筑内可据需灵活布置,被人们在酒店、医院等建筑所推崇.文章利用有限元分析软件SAP2000建立华伦式、帕式、混合式三种形式的交错桁架钢结构体系模型,对其分别运用反应谱和时程方法并结合用钢量作对比分析,从安全、经济合理综合考虑,得出在实际工程中宜采用交错桁架钢结构体系.
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