摘要
肇庆火车站站前广场钢结构雨棚为长悬臂结构,最大悬挑尺寸为43.760m。通过对比分析,确定了该结构竖向支撑体系采用斜交网格钢管柱体系,长悬臂结构采用平面桁架,为有效减小结构挠度,桁架的平面支撑采用预应力拉索。综合考虑大悬臂结构的力学特点,对结构进行内力和变形分析,并对屋面进行张拉膜结构设计。结果表明该结构安全可靠,可供同类结构设计参考。
Steel structure awning in Zhaoqing Railway Station Square is a large-cantilever structure with the maximum cantilever size of 43. 760 m. Through the comparative analysis,the vertical support system of the structure adopts oblique grid steel tubular column system. Large-cantilever structure adopts plane truss in order to effectively reduce the structural deflection. The plane support of the truss adopts pre-stressed cable. Considering the mechanical characteristics of large-cantilever structure,the internal force and deformation of the structure were analyzed,and the membrane structural design was conducted on the roof. The results show that the structure is safe and reliable,and can provide reference for design of similar structures.
出处
《建筑结构》
CSCD
北大核心
2017年第6期19-23,共5页
Building Structure
关键词
肇庆火车站
长悬臂钢结构
钢桁架
钢管柱
膜结构
Zhaoqing Railway Station
large-cantilever steel structure
steel truss
steel tubular column
membrane structure
