(中国建筑西南设计研究院有限公司，成都 610081)

［摘要］   重庆南岸体育中心体育馆屋盖采用两向钢管桁架结构，体育馆及平台混凝土部分分为A，B，C，D四个区。介绍了结构分缝和补偿混凝土的使用，柱网的特殊排列，转换地梁的设置以保护市政涵洞，大跨度预应力梁的使用，三层弦杆形式的钢管桁架和环向桁架(腰部环箍)的设计分析过程。最终确定了合理的结构方案并在工程中实施。
［关键词］   三层弦杆形式钢管桁架；   环向桁架(腰部环箍)；   补偿混凝土；   转换地梁；   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
作者简介：郭赤，高级工程师，一级注册结构工程师，Email：cdxngc@163.com。