摘要
内嵌CFRP板条加固钢筋混凝土梁在结构加固中是一种新兴的、经济有效的方法。以5根CFRP嵌入法加固RC梁的抗弯性能试验为依据,采用ABAQUS有限元分析软件模拟嵌帖长度对RC梁破坏模式及承载能力的影响。模拟结果在构件破坏模式、承载力、混凝土应变等指标上均与试验结果能较好吻合,且由模拟结果能够看出,随着嵌条长度的增大,CFRP的贡献会持续存在,钢筋屈服后挠度增大的情况得以改善。
The near surfaced mounted （NSM） method of CFRP strips is a new effective method used to strengthen structural components. Based on the tests carried on 5 beams strengthened with the NSM method, this paper investigates the effect of CFRP embeded length on failure modes and the ultimate bearing capacity of strengthened RC beams with the help of ABAQUS. The comparing results show that the ABAQUS can simulate accurately the failure mode, ultimate bearing capacity, concrete strain of the actual RC beams. From the simulation, It is also found that CFRP strips can maintain useful in preventing the growing of deflection after steel yielding with the increasing of CFRP strips＇ length.
出处
《结构工程师》
北大核心
2012年第5期154-158,F0004,共6页
Structural Engineers
基金
国家自然科学基金(51008235)
关键词
CFRP
嵌入法
抗夸陛能
ABAQUS
CFRP, near-surface mounted method, bending resistance, ABAQUS
