（1 混凝土及预应力混凝土结构教育部重点实验室， 南京 211189；2 东南大学土木工程学院， 南京 211189）

［摘要］对某高校体育馆大跨度钢结构屋盖进行了不同结构体系比选，最终采用空间桁架结构体系。采用SAP2000对体育馆整体结构进行建模，对比分析了两个屋盖结构布置方案的静力性能、动力特性和用钢量指标，结果表明：通过优化结构整体布置，在用钢量更低的情况下，明显提升了结构各项性能。采用ABAQUS软件对结构关键节点进行有限元分析，并基于分析结果对节点采取局部加强措施，保证了结构安全。

［关键词］钢屋盖； 空间桁架结构； 桁架受力性能； 节点分析

中图分类号：TU318, TU391文献标识码：A文章编号：1002-848X(2020)09-0037-07

Comparison and optimization of design schemes for steel structure roof of a university gymnasium

SHU Ganping1,2, YAN Xin1,2

(1 The Key Laboratory of Concrete and Prestressed Concrete Structures of the Ministry of Education, Nanjing 211189, China; 2 School of Civil Engineering, Southeast University, Nanjing 211189, China)

Abstract:Through the comparison of different structural systems, the large-span steel structure roof of a university gymnasium finally adopts the space truss structure system. The SAP2000 software was adopted to build the model of whole structure of the gymnasium, the static performance, dynamic characteristics and steel consumption of the two roof structure arrangements were compared and analyzed. The results show that the structural performance is significantly improved and the steel consumption is lower by optimizing the overall layout of the structure. ABAQUS software was used to analyze the mechanical behaviors of the key joints of the structure. Based on the analysis results, local strengthening measures were taken on the joints to ensure the structural safety.

Keywords:steel roof; space truss structure; mechanical performance of truss; joint analysis

作者简介：舒赣平，博士，教授，博士生导师，Email：sgp0818@vip.sina.com。