Abstract:

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.

Key words: planted bar, ultimate load carrying capacity, anchor group effect