大跨度碟型螺旋管桁架钢结构屋盖设计  

Steel Structural Roof Design with Large Span Saucer Spiral Pipe Truss

作　　者：赵楠[1,2] 胡正平[1] 李婷[1] 

机构地区：[1]北京市建筑设计研究院有限公司,北京100045 [2]北京三磊建筑设计有限公司,北京100048

出　　处：《结构工程师》2016年第2期9-14,共6页Structural Engineers

摘　　要：中国(太原)煤炭交易中心屋盖采用葵花型曲面造型,结构体系采用大跨度螺旋管桁架形式。通过建立整体有限元模型,运用风洞试验及地震安全性评价报告结果,对大跨度钢结构屋盖在地震、风、温度等各类工况下的性能进行详细分析,并对节点进行精细模型验证。分析结果表明,结构杆件的形式和布置方式满足安全性和经济性的要求,结构在罕遇地震、极端温差及不利风荷载下均具有良好的安全性能,并根据结构分析结果对节点进行了详细设计。A sunflower type surface model was adopted for the roof of China （Taiyan） coal trading center. Its structural system is spiral pipe truss. Finite element analyses and wind tunnel testing were performed to study structural safety under various working conditions, such as earthquakes, wind and temperature loads. Detailed numerical analyses were conducted for large span steel structure roof and the joints. Analytical results show that this structure meet safety and economic requirements. It has good performance under rare earthquakes, temperature difference, and extreme wind loads. The joints were designed in detail based on structural analysis results.

关 键 词：管桁架 有限元 温度效应 节点 

分 类 号：TU393.3[建筑科学—结构工程]