BFRP筋混凝土梁受弯性能的试验研究∗

摘要

通过3个BFRP(Basalt Fiber Reinforced Polymer)筋混凝土简支梁和3个普通钢筋混凝土简支梁的受弯性能试验，研究了其在不同配筋率下受弯性能的差异，得到了BFRP筋混凝土梁的裂缝分布特征、极限荷载、荷载-挠度和荷载-应变关系，分析了其极限承载力和延性，并通过对BFRP筋混凝土梁受弯承载力理论值与试验值的对比，分析了BFRP筋混凝土梁的破坏特征以及不同配筋率对其影响，并且验证了BFRP筋混凝土简支梁平截面假定的准确性。%Through test on flexural behavior of 3 BFRP bar reinforced concrete beams and 3 RC beams, we study the differences in the different ratio of reinforcement under flexural properties. Distribution char-acteristics of the fracture, the ultimate load, the load-deflection and load-strain relationship of BFRP bar reinforced concrete beams were studied, and of the ultimate bearing capacity and ductility were analyzed. Through the comparison of theoretical value and test value of the bearing capacity of BFRP reinforced concrete beams, analyzing the failure characteristics of BFRP reinforced concrete beams and different rein-forcement ratio on the impact, and the accuracy of BFRP reinforced concrete simply supported beam section assumption was verified.