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  1. 防災科研関係論文

Probabilistic liquefaction risk assessment using the ground settlement for the Japan-wide area

https://nied-repo.bosai.go.jp/records/7050
https://nied-repo.bosai.go.jp/records/7050
1b6d3ffd-4e5f-4ba2-ab33-d1f5642d9645
Item type researchmap(1)
公開日 2025-04-07
タイトル
言語 en
タイトル Probabilistic liquefaction risk assessment using the ground settlement for the Japan-wide area
言語
言語 eng
著者 Miyamoto Ryu

× Miyamoto Ryu

en Miyamoto Ryu

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Hayashi Takayuki

× Hayashi Takayuki

en Hayashi Takayuki

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Kishida Natsuki

× Kishida Natsuki

en Kishida Natsuki

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Iwanami Tatsuhiko

× Iwanami Tatsuhiko

en Iwanami Tatsuhiko

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Senna Shigeki

× Senna Shigeki

en Senna Shigeki

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Sato Haruka

× Sato Haruka

en Sato Haruka

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Matsukawa Hiroaki

× Matsukawa Hiroaki

en Matsukawa Hiroaki

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抄録
内容記述タイプ Other
内容記述 In recent years, there have been research cases where information on liquefaction points during earthquakes has been developed and the occurrence rate and area rate of liquefaction can be evaluated. On the other hand, when predicting damage to structures due to liquefaction, it is necessary to evaluate not only the probability of occurrence and area rate, but also the amount of settlement due to liquefaction as a measure of the severity of liquefaction. The probability of occurrence is also important in considering structural countermeasures, and it is necessary to construct a probabilistic settlement hazard assessment. In this study, we used the amount of settlement as an index to evaluate the severity of liquefaction and developed a model to predict the amount of settlement due to liquefaction. Specifically, an estimation model that predicts the amount of settlement due to liquefaction based on geographical information such as seismic intensity and microtopography classification was developed using borehole data from liquefaction sites that occurred in Japan in recent years. Furthermore, using this model, we constructed a liquefaction hazard model for all of Japan with a mesh size of 250 m based on probabilistic seismic motion prediction maps and geographic information such as microtopography classification. Using the modeled hazard and building fragility corresponding to the amount of settlement, we evaluated liquefaction damage for an arbitrary earthquake scenario as a deterministic risk assessment. In addition, liquefaction damage with arbitrary probability was evaluated as a probabilistic risk assessment. The developed method makes it possible to assess liquefaction risk in a wide area throughout Japan based on the amount of settlement.
言語 en
書誌情報 en : Japanese Geotechnical Society Special Publication

巻 10, 号 39, p. 1486-1490, 発行日 2024-05
出版者
言語 en
出版者 The Japanese Geotechnical Society
ISSN
収録物識別子タイプ EISSN
収録物識別子 2188-8027
DOI
関連識別子 10.3208/jgssp.v10.os-28-05
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