TY - GEN
T1 - Methodology for determining optimal countermeasure for bridges under seismic and tsunami hazards
AU - Ishibashi, H.
AU - Akiyama, M.
AU - Koshimura, S.
N1 - Publisher Copyright:
© 2023 The Author(s).
PY - 2023
Y1 - 2023
N2 - A methodology for determining the optimal countermeasure for bridges subjected to ground motion and tsunami is proposed. Seismic and tsunami fragility curves of a bridge pier and bearing are developed considering the effects of seismic damage prior to tsunami action. The structural vulnerabilities against horizontal and vertical forces are investigated separately in this paper. Seismic and tsunami hazard curves are obtained assuming the occurrence of an earthquake. Uncertainties associated with fault movement, hazard intensity and structural vulnerability are considered based on Monte Carlo simulation. The expected recovery time of bridges (i.e. risk) is estimated based on the failure probabilities of bridge piers and bearings, and used to determine the optimal countermeasure for bridges. As an illustrative example, the proposed methodology is applied to bridges which would be affected by the anticipated Nankai Trough earthquake.
AB - A methodology for determining the optimal countermeasure for bridges subjected to ground motion and tsunami is proposed. Seismic and tsunami fragility curves of a bridge pier and bearing are developed considering the effects of seismic damage prior to tsunami action. The structural vulnerabilities against horizontal and vertical forces are investigated separately in this paper. Seismic and tsunami hazard curves are obtained assuming the occurrence of an earthquake. Uncertainties associated with fault movement, hazard intensity and structural vulnerability are considered based on Monte Carlo simulation. The expected recovery time of bridges (i.e. risk) is estimated based on the failure probabilities of bridge piers and bearings, and used to determine the optimal countermeasure for bridges. As an illustrative example, the proposed methodology is applied to bridges which would be affected by the anticipated Nankai Trough earthquake.
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U2 - 10.1201/9781003323020-109
DO - 10.1201/9781003323020-109
M3 - Conference contribution
AN - SCOPUS:85186667086
SN - 9781003323020
T3 - Life-Cycle of Structures and Infrastructure Systems - Proceedings of the 8th International Symposium on Life-Cycle Civil Engineering, IALCCE 2023
SP - 899
EP - 905
BT - Life-Cycle of Structures and Infrastructure Systems - Proceedings of the 8th International Symposium on Life-Cycle Civil Engineering, IALCCE 2023
A2 - Biondini, Fabio
A2 - Frangopol, Dan M.
PB - CRC Press/Balkema
T2 - 8th International Symposium on Life-Cycle Civil Engineering, IALCCE 2023
Y2 - 2 July 2023 through 6 July 2023
ER -