大跨径网架屋顶设计与施工实践

某物资仓库拟采用框架结构和40 m跨网架屋顶。首先根据规范确定了屋顶荷载，并根据该建筑物位于台风区的实际，着重研究了风荷载的取值情况。该网架采用螺栓球节点，形式为正放四角锥形，施工采用分段整体吊装和高空散装的安装方式。实际使用情况表明，该物资库采用网架结构可靠耐用，且缩短了施工工期，取得了较好的经济效益。

Design and construction of large-span roof truss

The frame structure with large-span roof truss of 40m is adopted for a material warehouse. The load on roof is determined according to the standard, and then the determination of the wind load is studied according to the fact that the structure is located in typhoon area. The truss adopts bolt-sphere joints in the form of a rectangular pyramid, and a combination of sectional whole lifting-up and overhead scattered assembling was adopted in construction. The application practice of the warehouse showed that the truss structure was reliable and durable, and effectively shortened the construction period, so its economic benefit was notable.