曲靖体育场钢屋盖为大跨悬挑管桁架结构,采用“地面拼装成段、跨外分段吊装、高空对接合龙”的施工工艺。钢屋盖结构受安装路径效应影响较大,故采用SAP2000非线性施工模块按实际逐榀安装平面桁架模拟安装过程。研究表明,大部分构件应力比集中在0~0.1,具有富足的施工安全储备;钢屋盖的“X”形单元在安装过程中的相对独立性较好,冬季降温对体育场施工影响不大。 Qujing Stadium steel roof is a long span cantilevered pipe truss structure, using “ground assembled into sections, cross-section sub-lifting, high-altitude docking dragon ” construction process. The steel roof structure is greatly affected by the installation path effect. Therefore, the SAP2000 non-linear construction module is used to simulate the installation process according to the actual installation of the plane truss. The research shows that the stress ratio of most components is concentrated in 0 ~ 0.1, which is rich in construction safety reserve. The relative independence of the “X” -shaped unit of steel roof during installation is better, and the effect of winter cooling on stadium construction is not affected Big.