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(中國建筑西南設計研究院有限公司，成都 610081)

［摘要］   重慶南岸體育中心體育館屋蓋采用兩向鋼管桁架結構，體育館及平臺混凝土部分分為A，B，C，D四個區(qū)。介紹了結構分縫和補償混凝土的使用，柱網的特殊排列，轉換地梁的設置以保護市政涵洞，大跨度預應力梁的使用，三層弦桿形式的鋼管桁架和環(huán)向桁架(腰部環(huán)箍)的設計分析過程。最終確定了合理的結構方案并在工程中實施。
［關鍵詞］   三層弦桿形式鋼管桁架；   環(huán)向桁架(腰部環(huán)箍)；   補償混凝土；   轉換地梁；   市政涵洞；   市政道路

Structural design on the gymnasium of Chongqing Nanan Sports Center
Guo Chi, Luo Qianyue
(China Southwest Architectural Design and Research Institute Co.,  Ltd.， Chengdu 610081， China)
Abstract:The roof of the gymnasium of Chongqing Nanan Sports Center is made of ambiequal steel tube trusses. The gymnasium and the concrete platform are divided into four areas. The use of seismic joints and compensating concrete, the special arrangement of columns, the setup of ground beams to protect the municipal culvert, the use of large span prestressed girder, and the design process of three-layer chordes tube trusses and hoop trusses were introduced. At last, a reasonable structure scheme was determined and carried out in the engineering.
Keywords:three-layer chordes tube truss;hoop truss;compensating concrete;transfer ground beam;municipal culvert;municipal road
作者簡介：郭赤，高級工程師，一級注冊結構工程師，Email：cdxngc@163.com。