摘要
节点刚度是影响单层球面网壳内力的重要因素之一。采用空间梁单元有限元法,对凯威特型单层球面网壳进行杆件内力计算分析,引入α系数模拟球节点的刚性反应,得出了单层球面网壳由刚性连接到趋于柔性连接整个过程的内力变化规律;同时,针对不同的矢高、荷载,研究其对单层球面网壳杆件内力的影响,可为单层球面网壳的优化设计提供一定的参考。
The stiffness of joints is one of the most important factors which affects the internal force of single-layered spherical shells. Here, using finite beam element method, the internal forces of the poles in Kiewitt single-layered spherical shells are evaluated and analyzed and, introducing a coefficient α to simulate rigidity reaction of spherical joints, the changing law of internal forces during the transformation from rigid joint to flexible one is obtained. At the same time, the effects of different rises and loads, on the internal forces of the shell are also studied, which provides a reference for optimization design of single-layered spherical shell.
出处
《钢结构》
2005年第4期15-17,28,共4页
Steel Construction
作者简介
徐菁 女 1976年2月出生 讲师 博士 研究生
