北京体育学院体育馆双曲抛物面网壳屋盖结构

ROOF STRUCTURE OF HYPERBOLIC PARABOLOID RETICULATED SHELLS FOR THE GYMNASIUM OF BEIJING INSTITUTE OF PHYSICAL EDUCATION

北京体育学院体育馆屋盖结构采用四块组合型双曲抛物面双层网壳,其平面尺寸为59.2×59.2m。结构方案的特点是网壳在周边支承并在四角设立落地斜撑。竖向荷载由周边柱与斜撑共同承受,水平力则主要由斜撑承受。本文介绍了结构方案的确定、网壳的结构分析与设计、支座的构造以及制作与安装等。工程实践表明:本工程所采用的网壳方案具有传力明确、受力合理、施工简便、造型新颖等优点,其耗钢量与工程造价与新近建造的类似工程相比都是比较经济的。从设计与使用上均获得满意的效果。

The roof structure for the Gymnasium of Beijing Institute of Physical Education is composed of four hyperbolic paraboloid double layer reticulated shellswith an overall dimension of 59.2 x 59.2m. The unique feature of structurallayout is that the reticulated shells are supported along perimeters and also onfour inclined latticed struts at corners. The vertical loads are taken by the pe-ripheral columns and inclined struts while the horizontal forces are mainly re-sisted by the inclined struts. In the paper, the derivation of structural scheme,the analysis and design of shell structure, the details of support, as wellas the fabrication and erection of roof structure are presented.It is shown fromengineering practice that the structure used for the gymnasium has the advan-tages of explicitness of force transferring, rationality in load resisting, con-venince in construction and novelty in shape.Comparing with similar projectsbuilt recently, the steel consumption and cost of the project are more econo-ical. Satisfactory effect has been achieved both in design and in service.