不锈钢网架极限承载力的追踪分析

A Tracing Analysis of Ultimale Load-bearing Capacity of Stainless Steel Space Trusses

不锈钢材料可用于各类装饰网架和承重网架结构中，并在实际中得以推广应用。由于不锈钢材料没有明显的屈服点，而是由比例变形阶段直接进入强化阶段，本文据此建立了不锈钢压杆的单杆受力模型，利用荷载增量法对网架的极限承载力进行了追踪分析，得到了不锈钢网架的荷载位移曲线，结果表明不锈钢网架用于中小跨度的承重结构是可行的。

ln this paper, a mechanical model of stainlesa steel members under compression was established according to the curve of stainless steel materials. The load-displacement curve (P- curve) of stainless space trusses was derived and analyzed with the method of load increment. Results of analysis of the ultimate load-bearing capacity hy the method given in this paper showed that the stainless steel space trusses could be used in middlet space structures.