Practical seismic fragility estimation of Japanese railway embankments using three seismic intensity measures
This study proposes a practical fragility estimation equation for Japanese standard models of railway embankments using the peak ground acceleration, peak ground velocity, and Arias intensity. The analytical models were implemented as unreinforced and geosynthetic-reinforced embankment models. A sen...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-08-01
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| Series: | Soils and Foundations |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0038080622000683 |
| _version_ | 1798032917978415104 |
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| author | Masahiro Shinoda Susumu Nakajima Kenji Watanabe Susumu Nakamura Ikumasa Yoshida Yoshihisa Miyata |
| author_facet | Masahiro Shinoda Susumu Nakajima Kenji Watanabe Susumu Nakamura Ikumasa Yoshida Yoshihisa Miyata |
| author_sort | Masahiro Shinoda |
| collection | DOAJ |
| description | This study proposes a practical fragility estimation equation for Japanese standard models of railway embankments using the peak ground acceleration, peak ground velocity, and Arias intensity. The analytical models were implemented as unreinforced and geosynthetic-reinforced embankment models. A sensitivity analysis of the seismic fragility estimation of the embankment models was conducted on various embankment heights, average values of friction angles in the backfill soil, and tensile strengths of the primary reinforcement. Consequently, a unique formula for the fragility function in the presence of different seismic intensities was successfully presented. The parameters of the fragility function were successfully estimated using commonly used design parameters, such as the embankment height, average value of the friction angle of the backfill soil, and average value of the tensile strength. Additionally, another sensitivity analysis using different seismic databases was conducted to explore the effect of the seismic database on the fragility curve estimation of railway embankments. As a result, using different seismic databases, different fragility curves were obtained. These results highlight the importance of checking the sensitivity of the seismic database when developing the fragility curve. |
| first_indexed | 2024-04-11T20:21:51Z |
| format | Article |
| id | doaj.art-9aae7e116f614ffb85dc0cbf5abf4531 |
| institution | Directory Open Access Journal |
| issn | 2524-1788 |
| language | English |
| last_indexed | 2024-04-11T20:21:51Z |
| publishDate | 2022-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Soils and Foundations |
| spelling | doaj.art-9aae7e116f614ffb85dc0cbf5abf45312022-12-22T04:04:48ZengElsevierSoils and Foundations2524-17882022-08-01624101160Practical seismic fragility estimation of Japanese railway embankments using three seismic intensity measuresMasahiro Shinoda0Susumu Nakajima1Kenji Watanabe2Susumu Nakamura3Ikumasa Yoshida4Yoshihisa Miyata5Department of Civil and Environmental Engineering, National Defense Academy, 1-10-20 Hashirimizu, Yokosuka, Kanagawa 239-8686, Japan; Corresponding author.Structures Technology Division, Railway Technical Research Institute, 2-8-38, Hikari-cho, Kokubunji, Tokyo 185-8540, JapanDepartment of Civil Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-8656, JapanCollege of Engineering, Nihon University, Nakagawara 1, Tokusada, Tamura Koriyama, Fukushima 963-86420, JapanDepartment of Urban and Civil Engineering, Disaster Mitigation, Tokyo City University, 1-28-1 Tamazutsumi, Setagaya, Tokyo 158-8557, JapanDepartment of Civil and Environmental Engineering, National Defense Academy, 1-10-20 Hashirimizu, Yokosuka, Kanagawa 239-8686, JapanThis study proposes a practical fragility estimation equation for Japanese standard models of railway embankments using the peak ground acceleration, peak ground velocity, and Arias intensity. The analytical models were implemented as unreinforced and geosynthetic-reinforced embankment models. A sensitivity analysis of the seismic fragility estimation of the embankment models was conducted on various embankment heights, average values of friction angles in the backfill soil, and tensile strengths of the primary reinforcement. Consequently, a unique formula for the fragility function in the presence of different seismic intensities was successfully presented. The parameters of the fragility function were successfully estimated using commonly used design parameters, such as the embankment height, average value of the friction angle of the backfill soil, and average value of the tensile strength. Additionally, another sensitivity analysis using different seismic databases was conducted to explore the effect of the seismic database on the fragility curve estimation of railway embankments. As a result, using different seismic databases, different fragility curves were obtained. These results highlight the importance of checking the sensitivity of the seismic database when developing the fragility curve.http://www.sciencedirect.com/science/article/pii/S0038080622000683GeosyntheticsEmbankmentReinforced soilSeismic risk assessmentFragilityNewmark method |
| spellingShingle | Masahiro Shinoda Susumu Nakajima Kenji Watanabe Susumu Nakamura Ikumasa Yoshida Yoshihisa Miyata Practical seismic fragility estimation of Japanese railway embankments using three seismic intensity measures Soils and Foundations Geosynthetics Embankment Reinforced soil Seismic risk assessment Fragility Newmark method |
| title | Practical seismic fragility estimation of Japanese railway embankments using three seismic intensity measures |
| title_full | Practical seismic fragility estimation of Japanese railway embankments using three seismic intensity measures |
| title_fullStr | Practical seismic fragility estimation of Japanese railway embankments using three seismic intensity measures |
| title_full_unstemmed | Practical seismic fragility estimation of Japanese railway embankments using three seismic intensity measures |
| title_short | Practical seismic fragility estimation of Japanese railway embankments using three seismic intensity measures |
| title_sort | practical seismic fragility estimation of japanese railway embankments using three seismic intensity measures |
| topic | Geosynthetics Embankment Reinforced soil Seismic risk assessment Fragility Newmark method |
| url | http://www.sciencedirect.com/science/article/pii/S0038080622000683 |
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