Fundamental study on liquefaction strength of volcanic ash soil during the 2016 kumamoto earthquake

K. Ogo, H. Hazarika, M. M.P. Phyo, T. Kokusho, S. Ishibashi, S. Yamamoto, D. Matsumoto

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

抜粋

In April, 2016, two consecutive earthquakes registering 7 on Japanese scale occurred within 28 hours during the 2016 Kumamoto Earthquake, and caused liquefaction in many places around Kumamoto Plain. However, considering the magnitude and the distance from the hypocenter, the liquefaction-induced damage was not serious. Most of sand boiling was observed in places with higher likelihood of liquefaction such as near waterfront and on old river channels. In addition, black sand which seems to be of volcanic origin was observed as ejecta of liquefaction in many places. Therefore, cyclic triaxial tests were conducted to understand the relatively low liquefaction susceptibility on volcanic ash soil from Kumamoto by borehole sampling. Intact specimens were tested to evaluate the ageing effect in comparison with corresponding reconstituted specimens. Dissipated energy during cyclic loading was focused here as well as CRR to highlight the difference of liquefaction strength between the two kinds of specimens.

元の言語英語
ホスト出版物のタイトルEarthquake Geotechnical Engineering for Protection and Development of Environment and Constructions- Proceedings of the 7th International Conference on Earthquake Geotechnical Engineering, 2019
編集者Francesco Silvestri, Nicola Moraci
出版者CRC Press/Balkema
ページ4187-4194
ページ数8
ISBN(印刷物)9780367143282
出版物ステータス出版済み - 1 1 2019
イベント7th International Conference on Earthquake Geotechnical Engineering, ICEGE 2019 - Rome, イタリア
継続期間: 1 17 20191 20 2019

出版物シリーズ

名前Earthquake Geotechnical Engineering for Protection and Development of Environment and Constructions- Proceedings of the 7th International Conference on Earthquake Geotechnical Engineering, 2019

会議

会議7th International Conference on Earthquake Geotechnical Engineering, ICEGE 2019
イタリア
Rome
期間1/17/191/20/19

All Science Journal Classification (ASJC) codes

  • Environmental Science(all)
  • Earth and Planetary Sciences(all)

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  • これを引用

    Ogo, K., Hazarika, H., Phyo, M. M. P., Kokusho, T., Ishibashi, S., Yamamoto, S., & Matsumoto, D. (2019). Fundamental study on liquefaction strength of volcanic ash soil during the 2016 kumamoto earthquake. : F. Silvestri, & N. Moraci (版), Earthquake Geotechnical Engineering for Protection and Development of Environment and Constructions- Proceedings of the 7th International Conference on Earthquake Geotechnical Engineering, 2019 (pp. 4187-4194). (Earthquake Geotechnical Engineering for Protection and Development of Environment and Constructions- Proceedings of the 7th International Conference on Earthquake Geotechnical Engineering, 2019). CRC Press/Balkema.