援孟加拉孟中友谊展览中心结构设计

Structural design of Sino-Bangladesh Friendship Exhibition Centre

援孟加拉孟中友谊展览中心地上部分总长度为228m,总宽度为78.5m,设置两道伸缩缝将主体结构分为三部分,其中两侧为展厅,中间为登陆厅。展览中心采用框架结构体系,屋顶为空间钢桁架。主要介绍该工程的项目概况、屋顶钢桁架布置和结构分析计算,着重阐述孟加拉当地地震参数的确定、特殊风荷载的确定、钢桁架屋顶采取的抗风吸措施,以及桁架下分叉柱节点设计等,并介绍了设计中关于场址选择、建筑材料选用等其他关键问题。

The total size of aboveground part of Sino-Bangladesh Friendship Exhibition Centre is 228 m in length and 78. 5m in width. The main structure,which is divided into three parts by two expand joints,consists of two exhibition halls located on both sides and a landing hall located in the middle. This building adopts frame structural system and the roof adopts spatial steel truss. The overview of this project was introduced as well as the layout of steel truss roof and structural analysis. The identification of local seismic parameters in Bangladesh was focused on as well as the identification of special wind loads,wind resistance measures for steel truss roof,and bifurcated column node design under the truss. Some other key issues during the design process were also introduced,such as site selection,construction materials selection and so on.