广州新客站雨棚钢结构设计及索拱实验
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(1 北京市建筑设计研究院, 北京 100045; 2 东南大学土木工程学院,南京 210096)[摘要]广州新客站雨棚屋盖平面尺寸单侧421.8m×189.6m,总的建筑投影面积约为11.3万m2,空间关系复杂,采用了索拱、桁架、异形分叉柱、梭形柱等结构体系。介绍了结构体系和设计标准,通过预应力优化设计,使截面利用率和结构对支座的作用达到了最优化的效果。雨棚屋盖的静力分析、动力特性和抗震性能研究表明雨棚结构具有可靠的受力性能。对索拱拱脚节点、斜柱柱脚节点的设计研究保证了关键节点的安全。索拱结构静力试验研究了索拱结构的张拉方法、承载性能和极限承载力,试验结果验证了理论分析的可靠性。[关键词]火车站;雨棚;索拱结构;预应力;节点设计;模型试验Cable\|arc struture test and design on canopy of New Guangzhou Railway StationZhen Wei1, Feng Jian2, Sheng Ping1 (1 Beijing Institute of Architectural Design, Beijing 100045, China;2 School of Civil Engineering, Southeast University, Nanjing 210096, China)Abstract:The canopy of New Guangzhou Railway Station has a 421.8m×189.6m projection dimension. Prestressed cable-arc structure, truss structure, bifurcated column, shuttle-shaped column are used. The structure system and design standard are introduced. Optimization is used on the section utilization and support reaction design. Static analysis, dynamic analysis and aseismic analysis on the canopy roof proved the reliabity of the structure. The analysis of cable-arc supporting node and inclined brace supporting node insured the safety of critical joints. The cable-arc static experiment studied the construction method, load bearing performance and ultimate load-bearing capacity, which proved the realiabity of theoretical analysis.Keywords:railway station; canopy; cable-arc structure; prestress; joint design; model test作者简介:甄伟,硕士,高级工程师,Email:zhenw@biad.com.cn。参考文献[1]盛平,柯长华,甄伟,等.一种新型预应力索拱结构设计及工程应用[J].建筑结构,2008,38(1).[2]盛平,柯长华,甄伟,等. 广州新客站总体结构设计[J]. 建筑结构, 2009,39(12).[3]中国建筑科学研究院.广州新客站风荷载与风环境试验研究报告[R].2008.[4]王国周, 瞿履谦. 钢结构——原理与设计[M]. 北京: 清华大学出版社, 1993.[5]陈骥. 钢结构稳定理论与设计[M]. 北京:科学出版社,2001.[6]MIDAS技术手册:结构分析与设计[M].北京迈达斯技术有限公司,2002.
[7]徐福江,甄伟,赵明,等. 车站大跨度索拱钢结构雨棚弹塑性时程分析[J]. 建筑结构,2009,39(12).