Japan Society of Civil Engineers 2019 Annual Meeting

Presentation information

第I部門

免震構造・デバイス (1)

Wed. Sep 4, 2019 8:40 AM - 10:10 AM I-5 (幸町北3号館 322講義室)

座長:豊岡 亮洋(鉄道総合技術研究所)

[I-240] Cumulative inelastic deformation (CID) and Cumulative fatigue damage (D) of hysteretic-type seismic dampers

*宇佐美 勉1 (1. 名城大学総合研究所)

Keywords:Buckling-restrained barace, Performace verification method, Lowcycle fatigue, Loading protocol of CID

One of the most effective ways for seismic performance upgrading of steel bridges is now to install seismic dampers in bridges. For hysteretic-type seismic dampers high performance deformation as well as low-cycle fatigue capacities are required. Two methods exist now for evaluating low-cycle fatigue capacity, i.e. Cumulative Inelastic Deformation (CID) and Cumulative Fatigue Damage (D) methods. However the relation between those two methods is not clear yet. The purpose of this study is to clarify the relation and propose a rational loading protocol for CID.

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