论文部分内容阅读
为研究型钢轻骨料混凝土梁的受剪承载力,进行了15根型钢轻骨料混凝土梁和2根型钢普通混凝土梁的受剪性能试验。基于对于型钢普通混凝土梁斜截面受剪承载力计算公式的分析结论,提出了型钢轻骨料混凝土梁斜截面受剪承载力的计算公式模型,并利用该计算模型对17根试验梁的斜截面受剪承载力进行了分析,当计算模型中的参数ω1=ω2=ω3=1.76时,该模型可作为型钢轻骨料混凝土梁受剪承载力的平均值计算公式,此时试验实测值与公式计算值之比的平均值为1.000,标准差为0.093;当计算模型中的参数ω1=ω2=ω3=1.0时,该计算公式模型可作为型钢轻骨料混凝土梁受剪承载力的设计计算公式。而且两种情况下试验实测值与公式计算值的比值随剪跨比λ的变化平缓,说明随λ的变化,公式的可靠度基本不变。
In order to study the shear capacity of SRC beams, the shear performance of 15 SRC beams and 2 SRC beams was tested. Based on the analysis of the formula for calculating the shear strength of the section beam of normal section steel beam, the formula of the formula for calculating the shear strength of inclined section of SRC beam is proposed. By using this calculation model, When the parameter ω1 = ω2 = ω3 = 1.76 in the calculation model, the model can be used as the average formula for calculating the shear capacity of SRC beam. At this time, the measured value and formula The calculated value of the ratio of the average of 1.000, the standard deviation of 0.093; when the calculation model parameters ω1 = ω2 = ω3 = 1.0, the formula can be used as a model steel beam aggregate concrete beam shear capacity of the design formula . In both cases, the ratio of the measured value of the test to the calculated value of the formula changes gently with the change of the shear span ratio λ, indicating that the reliability of the formula is basically unchanged with the change of λ.