地震応答解析

[CS12-49] Analytical Study on the Seismic Response of a Langer Arch Bridge during the Nankai Trough Earthquakes

*洪 子涵¹、小野 潔¹、片岡 正次郎²、馬越 一也³ (1. 早稲田大学、2. 国土技術政策総合研究所、3. 耐震解析研究所)

キーワード：鋼ランガー橋、地震応答、南海トラフ地震

In Japan, it was estimated that the probability of a magnitude 8 or 9 earthquake occurring in the Nankai Trough is 70 to 80 percent within 30 years. Therefore, it is important to verify the safety of the structures by conducting the dynamic analyses using Nankai Trough earthquakes simulated ground motions. However, limited studies have been performed focusing on the seismic response of arch bridges subjected to the Nankai Trough earthquakes. For this reason, the dynamic analyses of a Langer arch bridge were carried out in this study. Based on the analytical results, the characteristic of the seismic response of the arch bridge is investigated.