西南交通大学学报Issue(3)：461-465,5.DOI:10.3969/j.issn.0258-2724.2015.03.012
负载下CFRP约束混凝土应力-应变关系分析型模型
Analysis-Oriented Stress-Strain Model of CFRP Confined Concrete with Preload
摘要
Abstract
In order to investigate the effect of preload ratio on the peak stress and peak strain of FRP (fiber reinforced plastics)confined concrete columns,based on the experimental analyses of 32 CFRP (carbon FRP)confined concrete circular columns and 16 CFRP confined square concrete columns,a preload factor was considered to modify the JG Teng's formulas of peak stress and peak strain of CFRP confined concrete column. Based on the above the axial-lateral strain relationship of CFRP confined concrete was analyzed,and an analysis-oriented stress-strain model was set up by considering the effect of preload and taking the constitutive model purposed by JG Teng as an active confined relation. The research results show that the stress-strain relationship is consistent with the experimental result,and modified peak stress and peak strain agree well with the test results,and the error margins for the circular column specimens and square column specimens are about 10% and 15%,respectively.关键词
CFRP(碳纤维增强复合材料)/约束混凝土柱/负载水平/应力-应变关系/分析型模型Key words
CFRP (carbon fiber reinforced plastics )/confined concrete column/preload ratio/stress-strain relationship/analysis-oriented model分类
建筑与水利引用本文复制引用
潘毅,万里,吴晓飞..负载下CFRP约束混凝土应力-应变关系分析型模型[J].西南交通大学学报,2015,(3):461-465,5.基金项目
国家自然科学基金资助项目 （）
