盛  平  陆承康  程懋堏
    （北京市建筑设计研究院  100045）

[提要]  北京植物园展览温室为北京市重点工程，建筑造型奇特，外部全部采用钢结构，早流线型放射布置。各榀钢桁架的跨度、高度、弧线曲率各不相同，节点连续相贯，钢材为国产Q345C圆钢管。屋面采用点式无框超白中空双层玻璃。结合风洞试验，对风压基本值重新计算取值。结构分析使用了计算较精确的SAP84软件。文中还介绍了钢结构节点形式以及玻璃划分等内容。
[关键词]  展览温室  钢结构  风洞试验  玻璃划分

The Grccnhouse of Bcijing Botanical Gardcn is a major projcct in Bcijing. The bcautiful building is framcd with stccl structurc, the radiatcd trusscs arc laid out from the cUipsoid to the fanshapcd to show a strcamline shapc. The span, hcight and curvature among the trusscs arc diffcrcnt. The stccl pipe matcrial is Q345C. The insulation glass unit is uscd in the shcll. According to the tunncl tcst, we calculate the basic wind load. The SAP 84 software is uscd to analyse the structurc. The joints typcs and glass unit division arc dcscripcd also.
Keywords:  cxhibition grccnhousc; stccl structurc; tunncl tcst; glass unit division