(中国建筑设计研究院有限公司， 北京 100044)

摘要: 中铁青岛世界博览城展廊平面呈十字形布置，东西向长 507m，南北向长 287m，最高点标高为 35m。 主次方向展廊屋盖矢跨比均为 1 ∶ 1. 6，属高矢跨比拱形。 对此屋盖结构进行了方案比选，主要对比了纯拱结构、拱桁架和索拱结构体系。 综合考虑建造成本和建筑效果等多种因素后，本工程屋盖方案最终采用索拱结构体系。 区别于传统采用三角形刚性撑杆的索拱结构，本项目创新性地提出了柔性撑杆的弦撑式索拱结构。 分析了结构的静力性能和稳定性，得到了结构在设计荷载组合下的应力和位移。 分析结果表明，构件承载力满足规范要求，且钢索索力在风荷载工况下未松弛；在考虑几何非线性情况下，结构的整体稳定性可满足规范要求。

关键词: 中铁青岛世界博览城；索拱结构；纯拱结构；拱桁架；高矢跨比；柔性撑杆

中图分类号:TU398. 7 文献标志码:A 文章编号:1002￣848X(2022)01￣0012￣05

DOI:10. 19701 / j. jzjg. 20200244

Structural system design of cable arch structure on exhibition gallery roof of ChinaRailway Qingdao World Expo City

DONG Yue， HUO Wenying， SUN Hailin

(China Architecture Design Group， Beijing 100044， China)

Abstract: The exhibition gallery of China Railway Qingdao World Expo City is arranged in a cross shape， with a length of507m in the east￣west direction， 287m in the north￣south direction， and the highest elevation of 35m. The rise￣span ratio ofthe main and secondary roof both are 1 ∶ 1. 6， which belongs to arch shape with high rise￣span ratio. The schemecomparison of the roof structure was carried out， mainly comparing the pure arch structure， arch truss and cable archstructural system. After considering the construction cost， construction effect and other factors， the cable arch structuresystem was finally adopted as roof scheme in this project. Different from the traditional cable arch structure with trianglerigid strut， this project innovatively proposed the stringed cable arch structure with flexible strut. The static performanceand stability of the structure were analyzed， and the stress and displacement under the design load combinations wereobtained. The analysis results show that the bearing capacity of the component meets the requirements of the code， and thesteel cable force is not relaxed under wind condition；the overall stability of the structure can meet the requirements of thecode when considering the geometric nonlinearity.

Keywords:China Railway Qingdao World Expo City；cable arch structure；pure arch structure；arch truss；high rise￣spanratio；flexible strut

第一作者:董越，硕士，高级工程师，一级注册结构工程师，主要从事特种异形结构设计，Email:dongyue729@ 163. com。

[引用本文] 董越，霍文营，孙海林. 中铁青岛世界博览城展廊屋盖索拱结构设计[ J]. 建筑结构，2022，52(1):12￣16. DONG Yue，HUO Wenying，SUN Hailin. Structural system design of cable arch structure on exhibition gallery roofof China Railway Qingdao World Expo City[J]. Building Structure，2022，52(1):12￣16.