HRB500级钢筋RPC简支梁受剪抗裂强度试验研究

Research on the Shear Crack Strength of Reactive Power Concrete Simply Supported Beams with HRB500 Grade Steel

为研究高强钢筋活性粉末混凝土简支梁的受剪抗裂性能,以纵筋率、配箍率、钢筋等级和剪跨比等为参数,对6根不同高强钢筋活性粉末混凝土简支梁进行受剪抗裂性能试验研究,分析纵筋率、配箍率、钢筋等级、剪跨比、混凝土抗拉强度等参数对高强钢筋活性粉末混凝土简支梁斜截面抗裂强度的影响规律。在试验数据和前人研究的基础上,提出了高强钢筋活性粉末混凝土简支梁的斜截面抗裂计算模型和抗裂强度计算公式。

In order to study the shear crack resistance performance of with reactive power concrete and high strength reinforcement, with the longitu ly di supported beams nal reinforcement ratio, stirrup ratio, shear span ratio, steel grade and so on as the parameters,the research on shear crack resistance performance was carried out by 6 different simply supported beams with reactive power concrete and high strength reinforcement. The influence law of inclined section crack resistance strength was studied by the longitudinal reinforcement ratio, stirrup ratio, steel grade, shear span ratio, tensile strength of concrete, steel fiber volume content and other factors of simply supported beams with reactive power concrete and high strength reinforcement. On the basis of experimental data and previous research ,the inclined section crack calculation model and the shearing strength calculation formula of simply supported beams with reactive power concrete and high strength reinforcement are put forward.