Under the premise of the weight of the entire truss structure satisfying certain constraints, it achieved the minimum flexibility by optimizing the cross-sectional area of the bar.

采用的力学准则为满应变设计准则； 在整个桁架结构重量满足一定约束的前提下，通过优化各杆件截面积，达到整体柔度最小。

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The main parameters considered are height of the cable truss, area of cross section of tensile bar, pre-tension of tensile bar and thickness of glass panel.

通过有限元程序对点支式玻璃幕墙索桁架支承体系中索桁架结构高度、拉杆截面积、拉杆预拉力和玻璃面板厚度对其受力性能的影响进行了研究。

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The type of bar can be selected according to cross section area, performance of the member.

型钢可以根据构件截面的大小、受力特点，灵活地选用。

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