廣州新客站雨棚鋼結(jié)構(gòu)設(shè)計及索拱實驗
甄偉1,馮健2,盛平1
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(1 北京市建筑設(shè)計研究院, 北京 100045; 2 東南大學土木工程學院,南京 210096)[摘要]廣州新客站雨棚屋蓋平面尺寸單側(cè)421.8m×189.6m,總的建筑投影面積約為11.3萬m2,空間關(guān)系復雜,采用了索拱、桁架、異形分叉柱、梭形柱等結(jié)構(gòu)體系。介紹了結(jié)構(gòu)體系和設(shè)計標準,通過預(yù)應(yīng)力優(yōu)化設(shè)計,使截面利用率和結(jié)構(gòu)對支座的作用達到了最優(yōu)化的效果。雨棚屋蓋的靜力分析、動力特性和抗震性能研究表明雨棚結(jié)構(gòu)具有可靠的受力性能。對索拱拱腳節(jié)點、斜柱柱腳節(jié)點的設(shè)計研究保證了關(guān)鍵節(jié)點的安全。索拱結(jié)構(gòu)靜力試驗研究了索拱結(jié)構(gòu)的張拉方法、承載性能和極限承載力,試驗結(jié)果驗證了理論分析的可靠性。[關(guān)鍵詞]火車站;雨棚;索拱結(jié)構(gòu);預(yù)應(yīng)力;節(jié)點設(shè)計;模型試驗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作者簡介:甄偉,碩士,高級工程師,Email:zhenw@biad.com.cn。參考文獻[1]盛平,柯長華,甄偉,等.一種新型預(yù)應(yīng)力索拱結(jié)構(gòu)設(shè)計及工程應(yīng)用[J].建筑結(jié)構(gòu),2008,38(1).[2]盛平,柯長華,甄偉,等. 廣州新客站總體結(jié)構(gòu)設(shè)計[J]. 建筑結(jié)構(gòu), 2009,39(12).[3]中國建筑科學研究院.廣州新客站風荷載與風環(huán)境試驗研究報告[R].2008.[4]王國周, 瞿履謙. 鋼結(jié)構(gòu)——原理與設(shè)計[M]. 北京: 清華大學出版社, 1993.[5]陳驥. 鋼結(jié)構(gòu)穩(wěn)定理論與設(shè)計[M]. 北京:科學出版社,2001.[6]MIDAS技術(shù)手冊:結(jié)構(gòu)分析與設(shè)計[M].北京邁達斯技術(shù)有限公司,2002.
[7]徐福江,甄偉,趙明,等. 車站大跨度索拱鋼結(jié)構(gòu)雨棚彈塑性時程分析[J]. 建筑結(jié)構(gòu),2009,39(12).