(1 北京市建筑设计研究院有限公司， 北京 100045； 2 中国建筑科学研究院有限公司， 北京 100013；3 北京科技大学土木与资源工程学院， 北京 100083)

［摘要］三亚国际体育产业园体育场钢结构体系由外侧钢结构、轮辐式索桁架结构、屋顶膜结构组成。介绍了体育场钢结构各组成部分的结构体系、支承条件及连接关系，重点阐述了钢结构体系的设计难点及解决方案。设计了一种铰接柱支承的水平桁架结构，通过水平环桁架整体作用减小了环梁截面。设计了碳纤维增强复合材料拉索(CFRP索)组成的轮辐式索桁架结构，减轻了悬挑端自重，减小了交叉索对环索内力的影响，降低了索夹承受的不平衡力。对索膜结构形态进行了分析，实现了索桁架结构初始态位形与目标建筑几何相一致。研究了钢结构体系的整体稳定性能和各种荷载作用下的极限承载能力，结果表明钢结构整体稳定性能满足要求。研究了个别拉索发生偶然断索情况下钢结构体系的抗连续倒塌性能，结果表明断索不会引起连续断索导致结构倒塌。分析了不同施工安装次序对外侧钢结构内环梁稳定性的影响，通过屈曲分析得到内环梁计算长度，用于施工过程稳定验算。此外还介绍了关键节点设计。 

［关键词］轮辐式索桁架；铰接柱；极限承载力；断索分析；碳纤维索 

中图分类号：TU318 文献标识码：A文章编号：1002-848X(2021)19-0018-07

Steel structure design on the stadium of Sanya International Sports Industry Park 

LIANG  Chenyu1,  ZHU  Zhongyi1,  BAI  Guangbo1,  CHEN  Yi1,  WANG  Wei1,  SUN  Tonghai1,  XUE  Yuan2,  LIU  Xiaogang3 

(1 Beijing Institute of Architectural Design, Beijing 100045， China； 2 China Academy of Building Research, Beijing 100013， China； 3 School of Civil and Resources Engineering, University of Science and Technology Beijing, Beijing 100083， China) 

Abstract: The steel structure system of the stadium of Sanya International Sports Industry Park is composed of the outer steel structure, the wheel-spoke shaped cable-truss structure and the roof membrane structure. The structural system, supporting conditions and connection relations of the various components of the steel structure of the stadium were introduced, and the design difficulties and solutions of the steel structure system were emphasized. A kind of horizontal truss structure supported by hinged columns was designed. The section of the ring beam was reduced by the overall action of the horizontal ring truss. The spoke-type cable-truss structure composed of carbon fiber reinforced polymer(CFRP) composite cable was designed, which reduces the dead weight of the cantilever end, reduces the influence of the cross cable on the internal force of the loop cable, and reduces the unbalanced force borne by the cable clamp. The form of the cable-membrane structure was analyzed, and the initial configuration of the cable-truss structure was consistent with the target building geometry. The overall stability of the steel structure system and the ultimate bearing capacity under various loads were studied. The results show that the overall stability of the steel structure meets the requirements. The continuous collapse resistance of the steel structure system in the case of accidental cable break of individual cables was studied. The results show that the cable break will not cause the continuous cable break to cause the structure to collapse. The influence of different construction and installation sequences on the stability of the inner ring beam of the outer steel structure was analyzed, and the calculated length of the inner ring beam was obtained through buckling analysis, which was used for the stability check of the construction process. In addition, the design of key nodes was introduced. 

Keywords:wheel-spoke shaped cable-truss； hinged column； ultimate bearing capacity； cable break analysis； carbon fiber reinforced polymer composites cable

作者简介：梁宸宇，硕士，高级工程师，一级注册结构工程师，Email：liangchenyu@biad.com.cn。