钢筋混凝土植钢锚固的拉拔性能试验研究

EXPERIMENTAL RESEARCH ON THE DRAWING BEHAVIOR OF EMBEDDED STEEL L-BAR IN REINFORCED CONCETE

通过在不同强度的钢筋混凝土中植入不同型号角钢的单向拉拔试验研究,得到影响型钢锚固强度的3个因素,且主次顺序是:角钢型号,锚固深度,混凝土强度。通过观察试件受力破坏过程,总结出型钢锚固的3种破坏模式,分析得到黏结切应力的分布规律,在角钢屈服时出现最大黏结切应力。

The experiment of embedded steel L-bar in reinforced concrete under tensile load was carried out .The first important factor was the section steel model of the reinforcing L-bar, next was the depth of the embedded steel L-bar, and the third was the strength of the concrete .Through observing the failure process of the specimens , the failure model, the bond mechanism and the distribution of shear stress were discussed .The maximum value of binding shear stress appeared when the steel L-bar entered into the state of yielding .