(1 北京市建筑设计研究院，100045； 2 北京交通大学，100044)

［提要］北京芦城自行车馆平面近似椭圆形，屋盖形状为双曲面。屋盖及屋盖支承为整体钢结构，看台、附属用房采用混凝土结构。对混凝土抗裂采用新型纤维混凝土，取得了很好的抗裂效果。对空腹刚架的平面内稳定做了较为细致的分析，给出了空腹刚架弦杆及节间计算长度的计算方法，比较了不同的钢结构下部支撑刚度对钢结构构件内力和位移的影响，得出环向桁架的刚度是影响环向支承结构刚度的决定因素，空间支承钢柱的刚度对环向支承结构的刚度影响非常小，基本可以忽略。考虑了上部膜结构参与工作对计算结果的影响，进行了结构验算，保证了结构安全可靠。

［关键词］空腹网壳；膜结构；环形支承结构；稳定；温度内力

Structural Design of Beijing Lucheng Ti Xiao Bicycle Training Centre/Fan Qiang¹,Zhu Zhongyi¹,Wang Yi¹,Qin Kai¹,Chang Jianwei¹,Li Yun² (1 Beijing Institute of Architectural Design, Beijing 100045, China;2 Beijing University of Jiaotong, Beijing 100044,China)

Abstract: Beijing Lucheng Ti Xiao bicycle training centre has an ellipse plan and a hyperbolic roof shape with maximum height as 32.5m. The roof and supporting members are all steel structure, meanwhile the bleachers and subsidiary space are made of reinforced concrete. It mainly introduces the design and application characteristics of the key technical used in the project. Utilizing new type fiber concrete to deal with concrete cracking is effective. In addition, the in plane stability of the fasting frame has been researched accurately. The method to calculate chord and the internode length of the frame has been provide, the influence of different stiffness within lower steel supports on the internal forces and displacements of structure members has been compared, and that the stiffness of circle truss is the key element to determine the stiffness of supporting members has been concluded. Since the influence due to the stiffness of space supporting steel column is not obvious, this factor can be ignored. Considering the work done by upper membrane structure, and double checking, this method guarantees the structural safety and reliability well.

Keywords: hollow web latticed shell; membrane structure; tension ring; stability; temperature inforce