長継続時間地震波入力を考慮した鋼製橋脚の繰り返し耐荷性状実験  [in Japanese] Cyclic load bearing capacity of steel bridge piers subjected to long duration time motions  [in Japanese]

Recently,long-period and long-duration time seismic waves have been observed,such as Tokachi-Oki Earthquake and Niigataken-Chuetu Earthquake,and so on.However,seismic performances of structures subjected to long-period seismic waves are not clear.Therefore,in this study,the cyclic load carrying test was carried out in order to investigate the cyclic load bearing capacity of steel bridge piers.Consequently,it is found that the load bearing capacity after the maximum load is decrease about 10%.