铁道科学与工程学报2018，Vol.15Issue(3)：660-667,8.
GFRP-钢混合配筋混凝土结构使用寿命预测方法研究
Research on the service life prediction method of concrete structure with hybrid reinforcement of GFRP bars and steel bars
摘要
Abstract
In order to study the service life prediction method of concrete structure with hybrid reinforcement of GFRP bars and steel bars, based on the service life prediction feature of plain concrete and reinforced bars, GFRP bars in concrete environment, the structure service life prediction method under the influence of concrete durability and GFRP and steel bars area ratio was discussed and the service life prediction model of hybrid reinforced concrete structure was proposed. The proposed prediction model was used to analyze the service life of the hybrid reinforced T beams. Results show: the service life of the hybrid reinforced concrete structure is determined by three kinds of materials of the concrete, steel bar and GFRP bar, and with the difference of the concrete durability and reinforcement ratio, the service life of the overall structure is also different. When the concrete durability is poor, the structure service life is decided by the concrete durability; When the durability of concrete is better, the structure service life is determined by the different area ratios and the service life of the steel bars and GFRP bars in the concrete environment; The prediction model can be used to evaluate the residual service life of the hybrid reinforced concrete structures and the decision making of maintenance and reinforcement.关键词
GFRP筋/混合配筋/使用寿命/结构性能/预测/混凝土结构Key words
GFRP bars/hybrid reinforcement/service life/structural performance/prediction/concrete structures分类
建筑与水利引用本文复制引用
李星,蔺鹏臻,孙理想,杨子江..GFRP-钢混合配筋混凝土结构使用寿命预测方法研究[J].铁道科学与工程学报,2018,15(3):660-667,8.基金项目
国家自然科学基金资助项目(51368031) （51368031）
中国铁路总公司科技研发计划资助项目(2017G010-C) （2017G010-C）
甘肃省基础研究创新群体资助项目(1506RJIA029) （1506RJIA029）
