鄱阳湖模型试验大厅交叉张弦桁架设计

Design of intersecting truss string structure for modal test hall of Poyang lake

鄱阳湖模型试验大厅为单层110m单跨屋盖建筑,采用张弦桁架结构。为了改善常规张弦桁架平面外的稳定性及建筑效果,提出了交叉张弦桁架结构形式。重点阐述了大跨交叉张弦桁架体系的结构特点和设计中参数的选择,应用SAP2000软件分析了交叉张弦桁架的整体稳定性,另外介绍了特殊节点设计。

The building structure form for modal test hall of Poyang lake is truss string structure.The intersecting truss string structure was proposed to improve out-plane stability and architectural effect of norm truss string structure.The selection of design parameters of the large-span steel structure of the modal test hall was presented.By utilizing the software SAP2000,overall stability analysis of the intersecting truss string structure was carried out.In addition,the design of special joints was introduced.