赤峰市体育中心体育馆结构设计

Structural design of the gymnasium in Chifeng Sport Center

赤峰市体育中心体育馆是一座设有8千个坐席的综合性体育馆。体育馆的主体结构采用钢筋混凝土框架结构,屋盖的最大跨度为103.2m,采用大跨度钢网架结构。体育馆内设有24.9m×45m的大空间训练厅,训练厅的顶板作为小球训练厅楼板,楼盖采用跨度为24.9m和27m跨的大跨度预应力钢筋混凝土梁。大跨度楼板结构的竖向刚度弱,在人群荷载激励下容易产生较大的动力响应,引起人群的不舒适感。根据使用功能对小球训练厅楼板进行舒适度分析,保证楼盖结构满足舒适度要求。由于体育中心建筑形体复杂,对整体建筑进行了风洞试验,确保可靠的设计风荷载。通过针对性的分析,项目投入使用多年,结构运行良好,满足实际使用需求。

The gymnasium in Chifeng Sports Center is a complex gymnasium and has eight thousand seats.The main structure of the gymnasium is reinforced concrete frame.The structure of the roof which has a maximum span of 103.2 m is large-span steel grid structure.There is a large space training hall of 24.9 m×45 m in the gymnasium and the top of the training hall serves as the floor of the badminton and ping-pong training field.The 24.9 m-span and 27 m-span prestressed reinforced concrete beams are used for the floor.As the vertical stiffness of the large-span floor structure is weak,it is easy to produce large dynamic response under the excitation of crowd load,which may lead to the uncomfort of the crowd.According to the use function,the comfort analysis of the floor of badminton and ping-pong training field was carried out to ensure that the floor structure meets the comfort requirements.Wind tunnel test was carried out to determine the reliable design wind load on the structure because of the unusual form of the gymnasium.Under specific analysis,the project is in good status and meets the demand of usage after the gymnasium put into service.