2022年北京冬奥会国家雪车雪橇中心遮阳棚结构体系设计研究

Design and research on awning structure system of National Sliding Centre for Beijing 2022 Olympic

国家雪车雪橇中心是中国首次设计建造的雪车雪橇项目场馆,是2022年北京冬奥会设计难度最高、施工难度最大的项目之一,是世界上首个设置于山体南坡的雪车雪橇场馆。国家雪车雪橇中心由遮阳棚、赛道、基础三部分组成,遮阳棚为整个赛道的遮阳系统,也是一个主要设计亮点。为解决山体南坡太阳辐射的问题,实现建筑外观、功能与结构的有机统一,首次采用了新型大悬挑钢木组合遮阳棚结构。对该新型结构体系的选型、构造、受力机理及设计流程进行了研究,并通过整体数值分析及局部精细有限元分析,探究了该新型结构在不同设计工况下的受力响应,并验证了该新型结构体系的可行性。

National Sliding Centre is the first snowmobile venue designed and built in China,one of the most difficult projects in design and construction for the Beijing 2022 Olympic Winter Games,and the first snowmobile venue to be set on the south slope of the mountain in the world.National Sledding Centre consists of three parts:the awning,the track,and the foundation.The awning is the shading system for the entire track and is a major design highlight.In order to solve the problem of solar radiation on the south slope of the mountain and realize the organic unity of the appearance,function and structure of the building,a new type of large cantilevered steel-wood combination awning structure is first adopted.The type selection,structure,force mechanism and design process of the new structural system were studied,and through the overall numerical analysis and local fine finite element analysis,the force response of the new structure under different design conditions was explored,and the feasibility of the new structural system was verified.