门式钢刚架局部火灾下三维整体结构性能的响应分析  

ANALYSIS OF RESPONSE ON BEHAVION OF 3D INTEGRAL STRUCTURE OF STEEL PORTAL FRAME UNDER LOCAL FIRE

作　　者：张卓[1] 魏金科[1] 王杨[1] 

机构地区：[1]天津城市建设学院土木工程系,天津300384

出　　处：《工业建筑》2009年第S1期569-571,586,共4页Industrial Construction

基　　金：天津建设系统科技发展项目(2006-44)

摘　　要：建立了单跨门式钢刚架整体结构的模型。基于大空间局部火灾下的升温曲线,采用有限元方法对结构进行了数值模拟,分别得到了整体结构在不同防火保护方式下的变形云图以及檩条和斜梁构件的挠度随时间变化的曲线。最后对该类结构的实用抗火设计提出建议。The model of singe-span portal steel frame of 3-D integral structure is built.Based on heating cures in large space,finite element method is used to perform numerical simulation of structures in fire.As a result,the deformation contours of structures under different protection measures,and the cures of change in deflection of purlins and sloped beams with time are obtained.And it is put forward the proposal on the practical fire-resistant design of this kind of structure.

关 键 词：整体分析 门式刚架 局部火灾 抗火设计 有限元 

分 类 号：TU392.5[建筑科学—结构工程]