Development of RC Piles with Hinge Isolated Structure System
By Hisahiro Hiraishi, Soya Bu, Tomoki Nanya and Taichi Hiraoka
Concrete Research and Technology
Vol.20, No.3, Sep. 2009 (Issue 51)
- Synopsis:
- This paper reports the RC piles with HIS (Hinge Isolated Structure System). At the Hinge region of pile head, main steel bars are un-bonded in order to mitigate damage of concrete, and supplementary main steel bars which are not anchored into pile cap are arranged to resist bending moment and shear. The main contents of the examination in this paper are the effect of shape of pile head (with or without taper processing) on structural performance, the effect of concrete strength particularly used at pile head on destruction property, and the effect of axial compression steel bars which are unevenly arranged in order to reduce axial stress acting on concrete. The results showed that the proposed piles with HIS have excellent structural performance.
- Keywords:
- RC Piles, Hinge Isolated Structure System, High Axial Stress, Taper of Pile Head, Rotation Capacity
