This paper presents the results of the experimental studies of the prefabricated high-strength concrete (PHC) pile, which suffered brittle failure at the pile head during the 1995 Hyougoken-Nanbu earthquake. The specimens, which were representative of typical pile heads, were tested under reverse cyclic loading and a constant axial load. The conclusions of this study are: (1) when properly reinforced with longitudinal deformed bars and lateral reinforcement, PHC pile can exhibit stable hysteretic behavior and significant ductility, (2) the deformation capacity can be evaluated using the section analysis, in which the concrete confinement provided by the lateral reinforcement is incorporated.
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