玻璃钢/复合材料Issue(6)：12-17,6.
长期腐蚀环境影响下GFRP筋混凝土构件的老化机理及抗弯性能研究
STUDY ON THE AGING MECHANISM AND FLEXURAL BEHAVIOR OF GFRP REINFORCED CONCRETE MEMBERS UNDER LONG-TERM CORROSION ENVIRONMENT
摘要
Abstract
In order to study the aging mechanism and flexural behavior of GFRP reinforced concrete members under long-term corrosion environment,the effects of moisture,temperature and alkali environment on the tensile strength,effective tensile area and bond strength of GFRP bar were analyzed separately.Based on the change of the relationship between the material aging and cooperative work with concrete,the calculating formula of the flexural capacity of the normal section of the aging GFRP bar is derived by constructing the new geometrical condition,and using the derived formula to analyze the influence of aging rate on the bearing capacity of the component.The researches show that GFRP reinforced concrete member under the 1ong-term effect of the corrosion environment,GFRP tendons aging,its tensile strength,effective tensile area and bond properties have different degrees of reduction.As the aging rate of GFRP reinforced materials increases,the loss rate of flexural capacity of the component is also increasing.When the aging rate is 27％,the flexural capacity of the component is also lost by 25.97％.关键词
GFRP筋/老化机理/混凝土构件/抗弯承载力Key words
GFRP bars/aging mechanism/concrete component/flexural capacity分类
通用工业技术引用本文复制引用
李星,孙理想,蔺鹏臻,杨子江..长期腐蚀环境影响下GFRP筋混凝土构件的老化机理及抗弯性能研究[J].玻璃钢/复合材料,2017,(6):12-17,6.基金项目
国家自然科学基金资助(51168030,51208242,51368031) （51168030,51208242,51368031）
甘肃省基础研究创新群体项目资助(1506RJIA029) （1506RJIA029）
