武威市体育馆结构设计

Structural design of Wuwei Gymnasium

武威市体育馆是一个较为典型的综合性体育场馆。根据主体结构形式以及地质情况,经方案比选,基础采用了承载力较大的人工挖孔扩头桩,明显节约了工程造价。大跨屋盖采用了结构形式简洁、美观的张弦梁结构体系,并采取设计与施工方法相结合的思路,以释放大跨钢结构屋盖对主体结构产生的大部分水平力。整体结构布置结合建筑使用功能在8处设置了剪力墙,以提高结构的整体抗侧力刚度,尽可能减小其侧移。设计中对关键部位的竖向构件进行了中震弹性分析。对超长主体结构进行了温度作用计算,并采取加强楼板配筋等措施,以防止可能产生的混凝土收缩及温度裂缝。

Wuwei Gymnasium is a typical comprehensive sports facility. According to the structural system as well as the geological conditions, the manual hole digging piles were adopted by scheme comparision, which had larger bearing capacity and less cost. Beam string structure system was adopted in large span steel roof. Combination of design and construction helped re]ease most lateral forces of the main concrete structure caused by large span steel roof. In order to reduce the roof drift and increase the lateral stiffness of the main structure, 8 shear walls were added, which fulfilled the architectural requirements as well. Some key vertical members were designed as elastic elements under fortification earthquake. Temperature stress was calculated for super long structure under the temperature load. The enlargement of the reinforcement ratio of floor slab helped reduce the temperature stress in the concrete as well as the shrinkage cracking.