机构地区: 中南建筑设计院股份有限公司
出 处: 《建筑结构》 2012年第12期26-31,共6页
摘 要: 针对哥斯达黎加国家体育场位于高烈度地震区、钢罩棚超大跨度拱倾斜放置、罩棚造型复杂等特点,介绍了结构相关技术问题的处理措施。在罩棚拱基础中利用预应力拉索平衡拱竖向荷载下的水平推力,采用长桩+短桩的方式承担地震和风下的水平推力。在看台基础之间加设水平支撑,使基础梁和支撑形成一水平桁架,工程桩共同承担地震水平作用,解决了剪力墙下因水平剪力过大而无法布桩的难题。根据罩棚建筑造型,采用拱支网架结构,暗置节点板的相贯焊接节点、双向斜交桁架构成的菱形网格使结构机理符合建筑造型要求。 The measures are described in the progress of structure design and analysis of National Stadium of Costa Rica,which is in the high intensity seismic region.The structure has a complex shape canopy and an inclined large span arch.It is used prestressed cable,long pile and short pile to balance the level thrust at the arch foundation.A truss added on the level of pile caps to dispersing the shear under structural wall.Arch supported space latticed structure adopt on the canopy.Welding concurrent line joint with internaly plate,two-way oblique truss consisting of the diamond space truss meet the architecture requirements.