(中国建筑西南设计研究院有限公司， 成都 610041)

［摘要］ 介绍了青少年户外培训基地综合体育馆的工程概况，阐述了跨度为105m的弦支穹顶结构体系优化设计及选定过程。将初设方案和施工图优化方案进行了对比分析研究，对比内容包括屈曲模态、几何非线性屈曲、双非线性屈曲等。除此之外进行了整体抗连续倒塌验算。研究成果表明将外侧网架与单层网壳弦支穹顶连接成整体，并通过悬挑桁架和环向桁架进行整体刚度加强后，结构整体稳定性得到较大提高，有效避免了单层网壳转折点受力集中，同时结构不会发生连续倒塌破坏，并节约了预应力索用量、支座数量以及整体用钢量，经济指标更为良好。 

［关键词］青少年户外培训基地；综合体育馆；弦支穹顶结构；屈曲分析；稳定性；抗连续倒塌 

中图分类号：TU394 文献标识码：A文章编号：1002-848X(2021)22-0056-05

Optimal design on complex gymnasium’s roof of Teenagers’ Training Base  

HE  Yunming,  XU  Liwen,  LI  Jinzhe,  GUO  Chi,  DENG  Kaiguo,  FENG  Zhongwei 

(China Southwest Architectural Design and Research Institute Co., Ltd., Chengdu 610041， China) 

Abstract: The project overview of complex gymnasium of Teenagers’ Training Base was summarized, the optimal design and selective process on structure system of suspend-dome spanning 105 meters. The comparative analysis between initial design and optimized construction drawing, including buckling mode, geometrical nonlinear buckling, geometrical-material nonlinear buckling and so on. Besides, the overall anti-continuous collapse check was carried out. The result shows that the stability of structure can be enhanced by integrating outer space truss with suspen-dome of single-layer reticulated shell into a whole, and strengthening the overall rigidity through cantilever truss and hoop truss. According to this method, it effectively avoids the concentrated stress on hinge of single-layer reticulated shell, prevents progressive collapse and damage, save prestressed cables, bearings and steel used, which is more economical. 

Keywords:Teenagers’ Training Base； complex gymnasium； suspend-dome structure； buckling analysis； stability； anti-continuous collapse

作者简介：何云明，硕士，高级工程师，一级注册结构工程师，Email：11431937@qq.com。