複数回連続で地震を受ける耐震補強された鋼製橋脚の耐震性能に関する解析的研究

Abstract

Steel bridge piers are used for the expressway or railroad viaducts in the city area. Once infrastructure Had been a chainstructure which if they are damaged the whole bridge will be influenced. Earthquake motions, where principal motion last for a long time, long-period earthquake ground motion that occur multiple sequential earthquakes have caused damage. I am not considered about these earthquake external force in the current earthquake-resistant design standard and it Has not been examined. In this study, I set to target the seismic retrofitted steel bridge piers and the steel bridge piers designed by a current standard. The evaluate the earthquake proofing performance of the steel bridge piers the case of multiple sequential earthquakes by the dynamic analysis.