損傷した矩形断面鋼製橋脚の補修に関する研究

Abstract

Since Hyogoken-nanbu earthquake in 1995，many studies about strength and ductiity of steel piers have been conducted, However，the repair method of damaged steel piers which have buckling and crack is not standardized. It is not also specifcally how much the reaction force has remained in damaged steel piers. In this study, repair methods sere proposed that is early retrofit for damaged steel pier after severe earthquakes. Five test specimens which have bucking damages at the bottom of columns are repaired. Additionally，cyclic loading tests have performed which is same as previous tests. Moreover, it is important to evaluate exact remain reaction force for a steel pier，in order to investigate the damge levels and the necessity of repair. It is shown that, the fndamental data about the repair method of the square cross section steel pier.