基于优化分析法的类张弦结构找力分析

Optimization-based Force-finding Analysis for Analogical String Structures

在杂交结构理论基础上讨论了索、杆、梁混合体系的一种新型结构体系,类张弦结构即为张弦柱面巨型网格结构.在平衡矩阵理论基础上提出索、杆、梁混合体系的初始态预应力分布的确定方法为优化分析法,并用此方法计算了类张弦柱面巨型网格结构的初始态预拉力最优组合.此外,此方法还可通过现有的有限元分析软件分析结构整体预应力分布,无需再进行自我编程求解,为结构的分析设计提供了方便。

Based on the hybrid structure theory, discussed in this paper is a new type of structures mixed with cables, rods, and beams. As stated in the paper, string cylindrical is namely reticulated mega-structure. On the basis of equilibrium matrix theory, a new method is introduced for determining the initial pre-stress distribution for cable-bar-beam hybrid structures, that is, the optimization analysis. The proposed method can analyze structure overall pre-stress distribution using the existing finite element analysis software without programming for solution, and thus offer helpful means for structural analysis.