武汉国博会议中心钢屋盖结构设计

STRUCTURE DESIGN OF THE STEEL ROOF OF WUHAN INTERNATIONAL EXHIBITION CENTER’S CONFERENCE CENTER

针对武汉国博会议中心屋顶不同的空间形状及受力特点,采取不同的设计思路。主体结构上部钢结构采用双向钢桁架(100.8m×64.8m)转换屋盖的结构方式,通过比较不同的桁架结构形式,选用了桁架两端与钢骨柱刚接,斜腹杆在支座附近受拉的布置方式。屋盖的尾部结构呈现不规则的牛角形,采用变截面倒三角形与四边形相结合的钢管桁架结构体系,实现了建筑与结构的有机结合。

According to the roof’s different structure shape and mechanical characteristics of Wuhan International Exhibition Center’s conference center, different design ideas were adopted. The two-way steel truss was used to transfer roof in the design of the main structure’s upper steel structure. The span achieved at 100.8 m×64.8 m. By comparing different truss structures, the layout went as follows： the main span truss ends with the combined steel and concrete column adopted rigid connection, and diagonal web members were in tension near the bearings. The roof rear structure taked on irregular horn-type. To form the common mechanical structure system, variable cross-section inverted triangular steel pipe truss and quadrilateral steel pipe truss were used, the structure selection and architectural design were united organically.