索穹顶结构杆件内力分析

Analysis on the Internal Force of the Member Bars of Cable Dome

索穹顶结构(Cable Dome)是目前能够最好体现张拉整体体系特点的空间铰接杆系结构,对于索穹顶结构而言,最重要的是对其受力杆件内力变化的研究,杆件内力随着外部条件的改变,造成了不同程度的变形,而结构体系在施工过程中造成的变形偏差对结构造成了一定的影响,会加大位移偏差。本文以某煤炭交易所工程为工程实例,分析结构体系各类杆件变形所引起的位移变化,以确保结构安全。

Abstract： Cable Dome is the space trusses that can best reflect the characteristics of tensegrity system at present. For Cable Dome, the most important thing is to study the changes of internal force of the stress member bar. Along with the change of the external conditions, the internal force has different degrees of deformation. The distortion deviation caused by structural system in the construction process causes a certain effect on the structure, which will increase the displacement deviation. This paper takes project of a coal exchange as an example to analyze the displacement changes caused by the deformation of various members of the structural system to ensure the safety of the structure.