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(1 同濟大學土木工程學院建筑工程系 上海 200092；2 同濟大學建筑設(shè)計研究院 上海 200092)
【提要】 吉林省速滑館是2007年第六屆亞冬會的主場館，其屋蓋是一個預張力懸索拱體系，懸索跨度近95m，懸索與拱梁之間設(shè)置“之”字狀的吊索。懸索水平拉力的平衡體系由桅桿外側(cè)的背拉索、接地索、水平撐桿、斜撐桿或屋頂錨固索組成。這種組合結(jié)合了懸索結(jié)構(gòu)和拱結(jié)構(gòu)的優(yōu)點，懸索增加了拱的平面內(nèi)穩(wěn)定性能，同時減小了拱腳水平推力；拱提高了懸索的面內(nèi)剛度，有效減小荷載作用下特別是非對稱荷載作用下的結(jié)構(gòu)變形。介紹了該體系的結(jié)構(gòu)特點、初始預張力確定、動力特性、荷載作用下的力學性能，以及主要
節(jié)點構(gòu)造等。
【關(guān)鍵詞】 懸索拱結(jié)構(gòu) 找形分析 設(shè)計計算 節(jié)點構(gòu)造
Suspension Cablearch Roof Structure Design of Jilin Speedskating Gymnasium/
Zhang Qilin１，Wang Hongjun１，Gu Mingjian１，He Zhijun２(1 Building Engineering Dept.of Civil Engineering School,Tongji University,Shanghai 200092,China;2 Architecture Design & Research Institute of Tongji University,Shanghai 200092,China)
Abstract:The roof of Jilin speekskating gymnasium is a pretension cablearch system
with the suspension cable spanning approximately 95 meters,so far it is the longest in
 buildings nationwide.A zigzag hanger is distributed between the suspension cable and the arch beam.The horizontal force of the suspension cable is balanced by the baokstay,anchored cable,horizontal brace,tilted brace or anchored cable on the roof at the extrnal side of the mast.The combination integrates the strengths of both structures.The suspension cable enhances the stability of arch in plane and reduces the horizontal push of arch foot.The arch improves the vertical rigidity of suspension cable,thus markedly reducing the structural distortion under load,especially nonsymmetrical load.The structural features of the system,determination of initial pretension,dynamic functions,mechanical behaviors under load and the construction of main nodes,are introduced.
Keywords:suspension cablearch structure; formfinding analysis; design computation; node construction