欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
为了研究GFRP筋—钢筋混合配筋混凝土板的耐久性及抗弯性能，以混凝土碳化深度到达钢筋表面为标志，结合钢筋表面去钝化时间最小均值计算公式，对比分析6组不同配筋布置的GFRP筋—钢筋混合配筋混凝土板的耐久性。推导GFRP筋—钢筋混合配筋混凝土板适筋破坏的正截面受弯承载力计算公式，利用推导的受弯承载力计算公式对7组具有相同整体配筋率、不同GFRP筋与钢筋面积比的混合配筋板的抗弯承载力进行计算。研究结果表明：GFRP筋与钢筋合理混合布置，可较大程度地提高混凝土结构的耐久性和抗弯承载力。将钢筋布置于远离迎风面、角区的中间位置时，构件耐久寿命比传统的截面单一钢筋配筋方式延长1.19倍，耐久性达到最佳效果；随GFRP筋与钢筋面积比的增加，构件抗弯承载力提高的百分比最大可达到52.7%，且抗弯承载力随面积比的增加而增大。
英文摘要：
In order to study the durability and flexural behavior of concrete slabs with hybrid reinforcement of GFRP bars and steel bars,by taking the concrete carbonation depth as a symble,combining with calculating formula of the minimum average of depassivation time on the surface of steel bar,the durability performance of concrete slabs with hybrid reinforced of GFRP bars and steel bars in six groups were compared and analyzed.The flexural capacities simplified calculation formula of appropriate hybrid reinforcement slabs is also proposed,based on the flexural capacities simplified calculation formula,the flexural capacity of the seven groups with the same integral reinforcement ratio,different GFRP reinforcement and steel area ratio is calculated.The researches show that Rational mixed reinforcement can greatly improve the durability and flexural capacity of concrete structure.When the steel bars are arranged in the middle position,which is away from the windward side and corner area,the durability life of the component is1.19times longer than that of the traditional one,and the durability performance reach the best result;with the increase of area radio of GFRP bars to steel bars,the percentage of flexural bearing capacity of the component can be increased by52.7%,and the flexural capacity increases with the increase of the area ratio.
同期刊论文项目
同项目期刊论文
期刊信息
位置：