碳纤维编织网增强混凝土梁正截面承载力计算  

Calculation of the Ultimate Bearing Moment of Textile Reinforced Concrete Beam with Carbon Fiber

作　　者：陈雷[1] 卢小雨[1] 

机构地区：[1]安徽理工大学能源与安全学院,淮南232001

出　　处：《结构工程师》2015年第1期182-185,共4页Structural Engineers

基　　金：淮南市科技计划项目(2011A07918);安徽理工大学大学生创新创业训练计划支持项目(201210361108)

摘　　要：碳纤维具有高抗拉强度、耐腐蚀、抗磁化的优点,纤维束可以沿混凝土中的主拉应力方向布置,因此碳纤维编织网增强混凝土得到了越来越多的应用。当受压边缘混凝土应变大于混凝土峰值压应变时,对混凝土压应力采用等效矩形计算方法;反之,则将其近似为三角形分布,然后利用平截面假定推导得到了纤维拉断控制破坏、混凝土压碎控制破坏及平衡破坏三种破坏模式下的碳纤维编织网增强混凝土梁正截面承载力计算公式。最后,结合试验数据,验证了计算公式的精确性。The carbon fiber has advantages of high tensile strength,corrosion resistance and anti-magnetization.It can also be placed in the direction of the principle tensile stress; therefore the textile reinforced concrete with carbon fiber has gained more and more applications.When the concrete strain at the compressive side is larger than the peak strain of concrete,the compressive stress figure can be equated with rectangle;otherwise,it can be approximately looked as triangle.Based on the plane section assumption,the formulas of the normal section bearing capacity of textile reinforced concrete beam at three different failure modes were presented.The calculated results agreed well with the test results.

关 键 词：纤维编织网增强混凝土 矩形梁 等效矩形计算方法 正截面承载力 

分 类 号：TU375.1[建筑科学—结构工程]