火灾后陶粒混凝土梁受力性能试验与分析  

EXPERIMENT AND ANALYSIS ON MECHANICAL PROPERTIES OF REINFORCED CERAMSITE CONCRETE BEAM AFTER FIRE

作　　者：袁丽莉[1] 王建民[1] 赵亚军[2] 闫成文[1] 

机构地区：[1]宁波大学建筑工程与环境学院,浙江宁波315211 [2]北京铁路局天津西站至天津站地下直径线工程建设指挥部,天津300232

出　　处：《工业建筑》2011年第4期71-74,共4页Industrial Construction

基　　金：浙江省科技攻关资助项目(2007C31041);浙江省教育厅基金项目(Y200804041);宁波市自然科学基金资助项目(2009A610114)

摘　　要：为研究火灾后配筋陶粒混凝土结构的受力性能,对一组陶粒混凝土简支梁进行高温过火及火灾后的常温加载试验。与火灾前相同陶粒混凝土和普通混凝土构件进行对比,过火后试件的正截面受弯和斜截面受剪承载力均有不同程度的降低。同时,对陶粒混凝土试件的高温过火及过火后的加载试验进行有限元模拟,并将数值模拟结果与试验结果进行对比分析。To study the mechanical properties of reinforced ceramsite concrete structure after fire,experiments on fire resistance performance of a group of simple supported beams and static loading tests after fire were carried out.Comparing with the beams before fire,the bending and shear properties of ceramsite concrete beams after fire all reduced in different degrees.At the same time,the finite element analysis on the ceramsite concrete beams after fire was carried out,and the results were compared with the those of experiment.

关 键 词：火灾后 陶粒混凝土简支梁 正截面承载力 斜截面承载力 

分 类 号：TU375[建筑科学—结构工程]