营口市奥体中心体育馆屋盖结构优化选型

Optimization design of the gymnasium roof structure in Olympic center of Yingkou

为得到营口市奥体中心比赛用馆屋盖结构的合理形式,基于通用有限元软件ANSYS及自主开发的辅助接口程序,对双层网壳及弦支网壳的两种结构形式进行了细致的受力分析,通过结构位移、支座反力、杆件内力及用钢量等参数的对比,确定了屋盖结构采用下层索在同一斜平面内的弦支网壳形式;同时对此结构形式进行更全面更具体的优化设计,从结构的总体变形、内力响应、用钢量等方面验证了此结构形式的合理性及可行性.

In order to obtain the rational roof structure of the gymnasium in Olympic center of Yingkou, by utilizing the universal finite element software ANSYS and the self-developed assistant interface programs, systematical structure analyses between the double-layer latticed shell and the suspend-reticular shell were carried out on three schemes of the roof structure. Based on comparisons of the structure displacements, the force of reactions, the stresses and the volume of steel, the suspend-reticular shell of the underlayer cable in the inclined plane for the roof structure was adopted, and the more comprehensive and specific optimizationat design was performed for it. It is proved to be feasible and reasonable for the design by analyses on the deformation of the structure, the internal force response and the volume of steel.