安阳地区计委设计室在宾馆食堂工程的圆形建筑上采用了门式刚架。实践证明,这种结构型式对施工条件要求不高,技术经济指标较好,工程进展较快。一、概况:该工程为直径25米圆形餐厅,曾作过多种结构设计方案比较。例如板梁体系,虽然是常用的结构型式。但用于25米跨度,其主梁高度可 The Anyang Area Planning Commission’s design office adopted a portal frame on the round building of the hotel canteen project. Practice has proved that this type of structure requires less construction conditions, better technical and economic indicators, and rapid progress in the project. I. Overview: The project is a 25-meter-diameter circular restaurant, and has been compared with various structural design schemes. For example, the plate girder system is a commonly used structural type. But for a span of 25 meters, the height of the main beam can be