Abstract
This paper reports the RC piles with the damage reducing system which have the cylindrical joint between the pile cap and pile head(the RC Pile with Hinge Isolated Structure System as follows). The main steel bars absorbing the seismic energy are un-bonded in order to mitigate damage of concrete at hinge region of the joint and pile head, and supplementary main steel bars which are not anchored into pile cap are arranged to resist bending moment and shear. The cross section area of the joint is half size of pile to reduce bending moment of pile head. The static loading tests are carried out to examine structure performance of the RC in high axial stress. The results showed that the piles proposed in this paper had excellent structural performance.
