鄂尔多斯东胜体育场是一座带有可开闭屋顶的大型体育建筑,结构体系新颖独特。体育场由巨拱+钢拉索、固定屋盖、活动屋盖、碗状看台结构以及裙房组成。看台由斜柱、楼层梁与看台梁形成的径向刚架作为径向抗侧力体系,由环向楼面梁连接各榀径向刚架形成环向框架。为了避免对开合屋盖产生的不利影响,体育场看台混凝土结构不设缝,采取了后浇带超长延迟封闭等综合措施,减小混凝土温度收缩应力的影响。巨拱高129m、跨度330m,与地面垂线倾斜6.1°,通过23组钢索将屋盖大部分重力荷载传给巨拱,水平荷载则由下部看台混凝土结构承担。体育场中部活动屋盖最大可开启面积为10 076.2m2,可以很好地满足全天候的使用需求。对活动屋盖考虑了处于完全打开或完全闭合状态时,屋盖结构能够承受各种最不利的荷载与作用进行混凝土看台结构设计。当活动屋盖处于运动状态时,荷载取值根据具体情况适当减小,这样既保证了整体结构的安全,又节省了造价。 Ordos Dongsheng Stadium is a large sports building with a roof that can be opened and closed. The structure system is novel and unique. The stadium consists of a giant arch + steel cable, fixed roof, movable roof, bowl-shaped stands and podium structure. The radial rigid frame formed by inclined columns, floor beams and grandstands acts as a radial anti-lateral force system and connects the radial frames to each other to form a ring-shaped frame. In order to avoid the unfavorable influence on the opening and closing of the roof, the concrete structure of the stadium bleachers is not sewed, and the comprehensive measures such as the extra long delayed closure of the post-pouring zone are taken to reduce the influence of the temperature shrinkage stress of the concrete. The giant arch has a height of 129m and a span of 330m and is inclined 6.1 ° to the vertical of the ground. Most of the gravity load of the roof is transferred to the giant arch by 23 sets of cables, and the horizontal load is borne by the lower stand concrete structure. Stadium activities in the central roof maximum open area of ​​10 076.2m2, can well meet the needs of all-weather use. The roof is considered to be fully open or fully closed state, the roof structure can withstand a variety of the most unfavorable load and the role of concrete stands structural design. When the movable roof is in the state of movement, the load value is appropriately reduced according to the specific conditions, thus ensuring the safety of the whole structure and saving the cost.