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介绍一种截面为三角形的轻型空间格构式刚架体系及其受力特点。由于其突出屋面的上弦杆无支撑相连 ,该体系的平面外整体稳定方面的研究就成为一个刻不容缓的问题。基于用MATLAB软件编制的一个桁元几何非线性计算程序 ,对该种结构进行了全过程分析。为了验证该程序的可靠性 ,将其与SAP91中的非线性桁元程序APAK0H进行了对比 ,并和试验结果作了对比 ,吻合情况都很好。通过大量的计算机分析 ,对这种结构体系的平面外整体稳定承载力进行了研究 ,并得出一些实用结论。
A lightweight lattice lattice frame system with triangular cross section and its force characteristics are introduced. Because of its prominent roof winding rod without support connected, the overall stability of the system out of plane research has become an urgent issue. Based on a geometric nonlinear calculation program of truss fabricated by MATLAB software, the whole process of the structure was analyzed. In order to verify the reliability of the program, it is compared with APAK0H, a non-linear truss program in SAP91, and compared with the experimental results. The agreement is good. Through a great deal of computer analysis, the overall out-of-plane stability of this kind of structural system is studied and some practical conclusions are drawn.