PVA-FRCC与钢筋锚固特性研究

Research on Anchorage Characteristics Between PVA-FRCC and Rebar

通过PVA-FRCC(聚乙烯醇-纤维水泥基复合材料)与钢筋黏结锚固构件的中心拉拔试验,对钢筋应力和黏结应力进行了分析.通过回归分析提出了PVA-FRCC与钢筋的黏结强度计算公式,其计算结果与试验结果吻合良好.在可靠度分析的基础上提出了PVA-FRCC与钢筋锚固长度设计建议.结果表明:钢筋锚固长度可按现行的GB 50010—2010《混凝土结构设计规范》规定的公式计算.

Pull-out test were carried out on bond anchorage specimens of PVA-FRCC（fiber reinforcement cement composite）and rebar to investigate the bond anchorage performance.Rebar stress and bond stress were analyzed.The established calculation formula of bond strength between PVA-FRCC and rebar are consistent with the experimental results.In addition,the design of anchoring length by way of reliability analysis between PVA-FRCC and rebar was proposed.The result is that the anchoring length can be designed with the formula in GB 50010—2010《Code for design of concrete structure》.