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空心管截面材料以其独特的优点,越来越受到设计师们的青睐,被大量应用于各式各样的现代建筑中。伴随着社会经济的发展,及分析理论和计算手段的日益完善,立体桁架拱在大跨建筑结构中得到更为广泛的应用,前景非常广阔。文章利用ANSYS有限元程序对立体桁架式拱进行了几何非线性分析,并通过荷载-位移曲线考察该结构平面外稳定问题的基本规律。
Hollow cross-section of the material for its unique advantages, more and more designers of all ages, is widely used in a wide range of modern buildings. With the development of society and economy, as well as the increasingly perfect analytical theory and calculation methods, the three-dimensional truss arch has been widely used in the construction of large-span buildings and has a bright future. In this paper, ANSYS finite element program is used to analyze the geometrical nonlinearity of the three-dimensional truss arch, and the basic law of out-of-plane stability of the structure is investigated through the load-displacement curve.