某钢屋架质量鉴定分析

Analysis of Qualification of a Steel Roof Truss

以某梭形轻钢屋架事故为背景,对事故原因进行了进一步分析;并从受压腹杆的稳定计算长度、矩形箍筋对受压与受拉腹杆的作用以及腹杆的可能变形形态等角度进行了理论分析﹒应用大型结构计算软件ANSYS进行了多种情况下的计算,明确了事故原因,提出了预防类似事故发生的方法,以及此类梭形钢屋架的改进型式﹒

The paper analyzes the reasons of collapse of the light steel roof with shuttle shape on second thoughts. It presents a theoretical analysis of the effect between the compressive and drew members and possible curving forms, with the analysis software of ANSYS, the genuine reasons are ascertained. Some recommendations for avoiding such accidents and improved shape of the roof are presented.