赵壁荣  朱思荣  冯  远
    （中国建筑西南设计研究院 成都 610081）

[提要]  德阳市体育馆根据建筑造型及功能要求，屋盖采用了双曲抛物面双层钢网壳结构。屋盖投影平面呈菱形，边长74. 67m，对角线长105. 60m。通过对双层网壳结构的受力特点，杆件布置形式，网壳厚度的确定及嗍壳与悬索结构对边缘构件的影响等方西的论述，阐明了结构设计方案的确定原则。另外进行了结构内力分析，并介绍了支座构迸，钢材{商标等。
[关键词]  双曲抛物面 网壳 曲西方程 边缘构件

Deyany Stadium of Sichuan Province, having a plan of lozonge with the side of 74. 67m long and with the diagonal of 105. 60m long, adopts double-curved and double-layered parabola steel roof structure, based on its architectural form and functions. The theme, from the force-bearing double-layered network structure, layout of members, thickness of network anci network roof structure and suspended cable are affecting on side members, embodies the rules of deciding structure scheme in addtion to analysize the inner structural forces and to introduce the support strcture and steel specifications.
Keywords: double-curved parabola roof; network roof; orthogonality; curved surface equation;
chord members