钢管桁架屋盖结构的极限承载力分析

对某体育馆的钢管桁架屋盖结构进行极限承载力分析，取用两种不同的模型，同时考虑几何非线性及材料非线性，采用逐步加载的方法，得到了荷载一位移全过程曲线。分析结果表明，该屋盖结构具有一定的安全储备，对结构的局部进行优化设计，既能满足承载力要求，又能取得较好的经济效益。

Analysis of Ultimate Load-Bearing Capacity of Roof Structure with Steel Tubular Truss

Two different types of models of roof structure with steel tubular truss in one stadium are used for ultimate load-bearing capacity analysis,the curves of load-displacement have been obtained by loading step by step,which allowing for geometric nonlinear and material nonlinear at the same time.The analysis results indicate that this roof structure has some emergency capacity,optimum design proceed for partial structure can not only obtain economy benefit,but also meet the requirements of load-bearing capacity.