Abstract
This study is to investigate the rupture mechanism of compressive rupture in circular reinforced concrete bridge piers caused by the Hyogoken-Nanbu-Earthquake of 1995. Impact loading tests were done to examine the possibility of producing compressive rupture in circular reinforced concrete specimens by axial impulsive force. Four types of RC specimens with circular cross section were employed for tests. Axial impulsive load was input to a specimen by means of the horizontal impact loading machine.