十字门喜来登酒店转换桁架设计

The Transfer Truss Design of Shizhimen Sheraton Hotel

十字门喜来登酒店的中庭转换跨度为37.8m,上部承载17层的客房层荷载,属于特大跨重载转换。采用大跨箱式钢桁架进行转换,主桁架与次桁架交叉布置,同时在上下弦杆水平面内设置交叉支撑,形成箱式转换层。文中对转换桁架的布置原则、桁架形式、杆件截面选型及节点设计做了详细介绍,并以柱头节点为例说明了有限元节点验算的方法。

The atrium conversion span is 37.8m of Shizhimen Sheraton hotel. It bears 17 layer hotel room of load,belonging to extra long-span overloaded conversion. This project adopts box-type steel truss conversion,using two direction truss cross layout,and set the cross brace in upper and lower chords in the horizontal plane,so as to form the box transfer story. The truss layout principle,bar section selection and node design are introduced in detail,and the top of column nodes as an example to illustrate the method of the finite element calculation.