【摘要】 根据纤维增强塑料筋(FRP筋)及其混凝土梁的力学性能,建立了纤维增强塑料筋混凝土梁达到纤维增强塑料筋名义屈服强度的截面曲率和梁最终破坏的截面曲率的表达式.以此为基础,探讨了纤维增强塑料筋混凝土梁截面曲率延性的计算方法.结果表明,纤维增强塑料筋混凝土梁截面曲率延性系数分别随纤维增强塑料筋配筋率的减小和混凝土强度的提高而增大.更多还原

【Abstract】 Based on the mechanical properties of fiber reinforced plastic rebar (FRP) and concrete beam, the expressions of cross section curvature at specified yield point of FRP and at failure of beam are established. On this basis, the calculating method of cross sectional ductility is studied and the consequent results indicate that, according to two kinds of calculating methods in the thesis, the curvature ductility coefficients increase with the decrease of FRP reinforcement ratio and increase of concrete strength.更多还原