以某大跨钢框架结构项目为例,针对该项目施工中屋盖悬挑钢梁时出现扭转、弯曲变形的情况,采用原设计PKPM模型与SAP2000模型进行整体结构对比验算,并运用ANSYS对相关构件进行应力分析,对比分析表明,结构整体计算基本正确,悬挑梁的应力满足材料强度要求,但整体变形不满足规范要求.%Taking the project of large-span steel frame structure for example, according to the situation of reverse and bending occurs when canti-levered roof girder construction process, compare the original design PKPM model with the overall structure SAP2000 model, and using ANSYS stress analysis of the relevant member, comparison shows that the overall structure model is basically correct, stress of cantilevered beams meet material strength requirements, but overall deformation does not meet specifications.
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