义马体育馆双向斜交管桁架结构分析
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（北京清城华筑建筑设计研究院， 北京 100083）[摘要] 义马体育馆罩棚设计平面近似为相互咬合的两个平行四边形。为满足建筑外观及室内感官的要求，屋面罩棚结构形式采用支撑于三角形格构柱上双向斜交管桁架结构。结构形式新颖美观，通过分析结构强度及刚度可以满足规范的要求，结构稳定性较好。本文介绍该结构体系设计的难点及解决方案，通过两种有限元软件进行分析对比，其计算结构基本一致，主要参数的差值均小于5%。[关键词] 双向斜交管桁架; 钢管混凝土柱; 特征值屈曲分析; 非线性屈曲分析中图分类号：TU391 文献标识码：A 文章编号：1002-848X（2013）S2-0457-05作者简介：田立强，本科，结构工程师，Email：tianliqiang80@126.com。Structure analysis of bidirectional bias pipe truss of YiMa stadiumTian Liqiang，Wang Changxing，Xu Ke（Beijing THCA Architectural Design & Consulting Institute, Beijing 100083, China）Abstract：The construction plane of Yima stadium canopy is similar with two occlusal parallelograms. To meet the construction requirements of exterior and interior senses, the bidirectional bias pipe truss supported on the triangular lattice column is applied into the roof design. The structural form is fashionable and attractive. By analyzing, the structural strength and stiffness could meet the specification requirements, and the construction has good structural stability. This article describes the difficulties in the design of structural systems and solutions, the analysis and comparison is completed with two type finite element software, the results are consistent, and the main parameters were less than 5% difference.Keywords: bidirectional bias pipe truss; concrete-filled steel tubular column; buckling analysis; nonlinear bucking analysis
