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应用MIDAS/Gen软件以平面系数为变量进行计算分析,得出椭圆形弦支穹顶力学性能随平面系数变化的规律。针对常用布索方式的椭圆形弦支穹顶存在的内力分布及节点竖向位移等具体问题,提出一种结构环索布置上的改进形式,即分块布置环索的弦支穹顶结构,并初步研究了其力学性能及稳定性能。通过对两种弦支穹顶结构形式力学性能的对比,提出了新型布索方式的优点,并提出了今后的研究方向及需要解决的主要技术问题。
With the software MIDAS / Gen, the plane coefficient is taken as the variable to calculate and analyze, and the law of the mechanical property of elliptical suspen-dome with the change of plane coefficient is obtained. Aiming at the problems existing in internal force distribution and vertical displacement of elliptical suspen-dome, the improved form of structural loop is put forward, that is, Its mechanical properties and stability are studied. By comparing the mechanical properties of two kinds of suspen-dome structures, the advantages of the new cloth-making method are put forward and the future research directions and the main technical problems to be solved are put forward.