三连跨轻型门式刚架结构设计及关键技术研究

Design of a Three-Span Portal Frame and Researches of Key Technologies

基于河南尚品食品有限公司年产5万吨肉制品钢结构厂房工程,对三连跨轻型门式刚架结构进行了深入分析,重点对较大悬挂荷载(非吊车荷载)的处理方法、柱脚连接形式等问题进行了探讨,并以结构最小用钢量为目标对柱距合理取值进行了优化研究.分析结果表明,较大悬挂荷载宜按照活荷载形式施加,柱脚宜采用铰接连接,柱距约为8m时,结构用钢量最小.

Based on the project of the steel structure plant of Henan Shangpin food Co.LTD,with the annual production capacity of 50 000 t of meat,this paper analyzed the light-weight steel structure with three-span portal frame,and mainly discussed the disposing method of the large suspended load and the connections of column feet.The researches were carried out using the minimum steel quantity as the target to obtain the reasonable column spaces.The results show that the large suspension load should be imposed in the form of live load,the connections of column feet are fit of hinge supports and when the column space is about 8m,the steel quantity is the least.