碳纤维布加固足尺混凝土柱偏压试验研究及有限元分析  

Experimental research and finite element analysis on full scale RC columns strengthened by CFRP under eccentric loading

作　　者：苗吉军[1] 毕文萍[1] 刘延春[1] 刘继明[1] 郝勇[2] 

机构地区：[1]青岛理工大学土木工程学院,山东青岛266033 [2]河北建筑工程学院土木工程系,河北张家口075024

出　　处：《建筑结构学报》2010年第S2期232-237,共6页Journal of Building Structures

摘　　要：在9根碳纤维布(CFRP)约束加固足尺混凝土柱偏压试验的基础上,研究了加固后混凝土柱破坏特征和受力性能,对碳纤维布应变、柱截面应变、柱侧向挠度以及极限承载力等进行了分析。分析结果表明:碳纤维布约束加固偏心受压混凝土柱效果明显,并采用ANSYS有限元分析程序模拟了加固混凝土偏压柱受力过程,研究成果可为工程应用碳纤维加固技术提供理论依据。In this paper,based on experiments of 9 full scale concrete columns strengthened by carbon fiber reinforced plastic(CFRP) under eccentric loadings,the behaviors of concrete columns and CFRP sheets were investigated,including the ultimate strength,the lateral deflection and the section strain distribution.The formulas for bearing capacity and lateral deflection of concrete columns strengthened by CFRP were given.The calculated results showed that the ultimate strength of concrete columns was enhanced and the ductility of concrete columns was improved obviously.The mechanical behavior of reinforced concrete columns strengthened by CFRP was simulated using finite element program ANSYS.The experiments and calculation results can provide theoretical reference for the engineering application.

关 键 词：混凝土偏压柱 碳纤维布加固 静力试验 有限元分析 受力性能 

分 类 号：TU375.3[建筑科学—结构工程]