基于Abaqus的CFRP布加固钢筋混凝土短梁的抗弯性能  

Flexural performance of reinforced concrete short beam strengthened by carbon fiber reinforced polymer/plastics sheet based on Abaqus

作　　者：曲爽 梁晨 QU Shuang;LIANG Chen(Key Laboratory of Reinforcement and Transformation of Building Structure&Underground Space Engineering(Ministry of Education),School of Civil Engineering,Shandong Jianzhu University,Jinan 250101,China)

机构地区：[1]山东建筑大学土木工程学院建筑结构加固改造与地下空间工程教育部重点试验室,济南250101

出　　处：《计算机辅助工程》2022年第4期50-54,61,共6页Computer Aided Engineering

摘　　要：为分析碳纤维复合材料(carbon fibre reinforced polymer/plastics,CFRP)布加固钢筋混凝土(reinforced concrete,RC)短梁的抗弯性能,利用Abaqus软件对1根RC短梁试件和7根CFRP布加固RC短梁试件进行有限元分析,研究CFRP层数和混凝土强度对RC短梁抗弯性能的影响。结果显示,CFRP层数和混凝土强度对CFRP加固试件的承载能力和刚度有很大的影响:随着CFRP层数的增加,CFRP加固试件的极限载荷可提高17.2%~94.9%;随着混凝土强度的增加,CFRP加固试件的极限载荷可提高5.4%~17.1%。To analyze the flexural performance of reinforced concrete(RC)short beams strengthened with carbon fiber reinforced polymer/plastics(CFRP)sheet,the finite element analysis of one RC short beam specimen and seven RC short beam specimens strengthened with CFRP sheets is carried out using Abaqus software,and the effects of CFRP sheet and concrete strength on the flexural performance of RC short beams are studied.The results show that the layer number of CFRP sheets and the concrete strength have great influence on the bearing capacity and stiffness of CFRP sheet strengthened specimens.With the increase of the layer number of CFRP sheets,the ultimate load of CFRP sheet strengthened specimen can be increased by 17.2%~94.9%;with the increase of concrete strength,the ultimate load of CFRP sheet strengthened specimen can be increased by 5.4%~17.1%.

关 键 词：碳纤维复合材料 钢筋混凝土 加固 短梁 抗弯性能 承载能力 有限元 

分 类 号：TU375.[建筑科学—结构工程]