BFRP筋再生混凝土无腹筋深梁抗剪承载力

为了研究BFRP筋再生混凝土无腹筋深梁抗剪承载力，完成了9根集中荷载作用下的BFRP筋再生混凝土无腹筋深梁的抗剪试验，分析了深梁的破坏过程、破坏形态以及剪跨比、BFRP筋配筋率、再生混凝土抗压强度对梁抗剪承载力的影响，基于加拿大规范和试验数据拟合出BFRP筋再生混凝土无腹筋深梁抗剪承载力计算公式。研究结果表明：BFRP筋再生混凝土深梁主要发生剪切破坏，随剪跨比增大，破坏形式由剪切破坏向弯剪破坏转变；试验梁的抗剪承载力随剪跨比的增大而减小，随BFRP筋配筋率和再生混凝土抗压强度的提高而增加；采用本文提出公式的计算结果与试验值吻合较好，且具有一定安全度。

Shear Capacity of Basalt Fiber Reinforced Polymer Reinforced Recycled Concrete Deep Beam Without Web Reinforcement

In order to study the shear capacity of Basalt Fiber Reinforced Polymer reinforced recycled concrete deep beam without web reinforcement, 9 deep beams under 4 point bending test were conducted. The failure process and failure mode of the tested beam were analyzed. Relationship of shear strength between shear span ratio, reinforcement ratio of BFRP rebar and the compressive strength of recycled concrete was also discussed, respectively. A formula based on Canadian specification and data fitting for calculating the shearing capacity of the specimens was proposed. Results showed that the main failure mode of BFRP reinforced recycled concrete deep beam without web reinforcement was the shear failure and with the increase of shear span ratio, the shear failure transforms to flexural-shear failure; The shear capacity of experimental beams decreased with increasing of the shear span ratio, while increased with the increasing of the reinforcement ratio of BFRP reinforcement and compressive strength of recycled concrete; results predicted by the adopted calculation model fitted well with the test results and had a certain degree of safety.