钢板加固受火后混凝土梁力学性能分析  

Analysis of mechanical properties of concrete beams strengthened by steel plate after fire

作　　者：段文峰[1] 卞博 DUAN Wen-feng;BIAN Bo(School of civil engineering,Jilin Jianzhu university,Changchun 130118,China)

机构地区：[1]吉林建筑大学土木工程学院,长春130118

出　　处：《吉林建筑大学学报》2021年第2期11-16,共6页Journal of Jilin Jianzhu University

基　　金：吉林省教育厅“十三五”科学技术项目(JJKH20200279KJ).

摘　　要：为研究粘结钢板加固受火后混凝土梁的抗弯性能,应用ABAQUS有限元程序对钢板加固受火后混凝土梁进行了非线性有限元模拟计算,通过建立7个分析模型,对比分析受火时间、粘接层厚度、钢板粘结长度对钢板加固受火后混凝土梁抗弯承载力的影响.研究结果表明,受火时间、钢板粘结长度对构件的抗弯承载力影响较大,而胶结层厚度对构件的抗弯承载力几乎没有影响.分析结果为钢板加固受火后混凝土梁力学性能研究提供参考.In order to study the flexural behavior of concrete beams strengthened with bonded steel plates after fire,the ABAQUS finite element program is used to perform nonlinear finite element simulation calculations on concrete beams strengthened by steel plates after fire,through the establishment of seven analysis model.The effects of fire duration,bonding layer thickness,steel plate bonding length on the flexural bearing capacity of reinforced concrete beams after fire are comparedand analyzed.Research indicates:fire duration,steel plate bonding length have a greater impact on the flexural bearing capacity of components,the thickness of cemented layer has little effect on the bearing capacity of members.The analysis results provide a reference for the study of the mechanical properties of steel reinforced concrete beams after fire.

关 键 词：受火 温度 有限元分析 加固 

分 类 号：TU375.1[建筑科学—结构工程]