利用梁柱大变形理论对充气拱结构进行简化计算

充气构件结构是膜结构的一种,其计算十分复杂。为此,介绍一种利用梁柱大变形理论进行充气结构计算的较为简化的方法。由于充气拱结构属于高压体系,在初始内压下,薄膜内的初始应力较高(相对于低压体系),其变形基本上属于整体变形。因此,可以将充气拱分为若干段杆件,并根据梁柱大变形理论分析充气拱结构在荷载作用下的特性。

CALCULATING PNEUMATIC STRUCTURES BY LARGE DEFORMATION THEORY OF GIRDERS AND POLES

Pneumatic Structure is one of membrane structures,whose calculation is very complicated Pneumatic Structures are often calculated by non linearity analysis methodIn this article,a new simplified method is introduced which uses large deformation theory of beam and columnWith initial air pressure,the structure′s deformation is basically as an integral deformationSo we can divide the arch into some sections,and analyze the pneumatic structure by large deformation theory of beam and column as a whole structure