混凝土植筋群锚效应试验分析

文章通过植筋试件的拉拔试验,研究了混凝土植单筋与植群筋在拉拔力作用下的破坏形态、极限荷载、植筋滑移、群锚效应和刚度延性分析,讨论了多根植筋组合效应对混凝土植筋锚固极限承载力的影响。结果表明:随着植筋数量的增加,群锚效应越加明显,植筋初始滑移量明显减少,当植筋数量为两根或三根时,表现效果最好。

Experiment Analysis of Anchor Group Effect of Concrete Anchorage

In this paper, the experimental results of pulling resistance of plant bar are given. The failure mode, ultimate load, anchorage slip, anchor group effect, stiffness and ductility of single bonded bars and group bonded bars in concrete subjected to tension have been investigated . The influence of group bars on the bond behavior has been discussed. The results show that the anchor group effect becomes increasingly obvious with the increase in the number of anchorage, and the anchorage initial slip is significantly reduced. The anchorage with the number of two or three has the best performance.