论文部分内容阅读
对大跨预应力双层组合扭网壳进行静力特征值屈曲分析,找到响应大的区域,对这些区域以及受力较大的杆件运用变换路径法找到结构的敏感性杆件。拆除其中的高敏感性杆件,通过考虑初始条件的等效荷载卸载法,运用动力时程分析研究其倒塌性能,发现拆除高敏感性杆件对于结构的影响不大,不会引起结构的连续性倒塌,只会对结构局部造成轻微的损坏,所以结构的整体性较好。
The static eigenvalue buckling analysis of large span prestressed double-layered twisted reticulated shell is carried out to find the area with large response. The sensitive component of the structure is found by using the change-path method in these regions and the stressed members. Demolition of the high-sensitivity members, through considering the initial conditions of the equivalent load unloading method, the use of dynamic time-history analysis of the collapse of the performance and found that demolition of high-sensitivity rod has little effect on the structure, will not cause the structure of continuous Sexual collapse, will only cause minor damage to the structure, so the overall structure of the better.