One-Dimensional Soil Column Simulation on Water Film Formation During Earthquake

Divyesh Rohit, Hemanta Hazarika, Chengjiong Qin, Tsubasa Maeda, Takaji Kokusho, Yuichi Yahiro

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

抄録

The 2018 Sulawesi earthquake of magnitude Mw 7.5 triggered large-scale flow slides and ground liquefaction in the Palu Valley at multiple locations on a ground of very gentle gradient. Findings of the post event forensic geotechnical investigation conducted by the authors of this research highlighted the presence of silty clay or sandy clay layers sandwiched between sandy or sandy gravel layers at multiple locations in the flow slide zones. These sandwiched layers tend to have low permeability as compared to overlying and underlying layers sandy strata. To study the contribution of these sandwiched layers on the triggering of flow slides, a preliminary research was conducted using 1D soil column with clay and non-plastic fines sandwiched between sand layers. The findings highlighted that the excess pore water pressure reached its peak value by an instant shock. A thin interlayer water called water film is easily formed below the clay and non-plastic fines seam on impact. The influence of water film on pore pressure dissipation and overall soil settlement was studied. Water film formed beneath the clay and non-plastic seam permits the soil layer above it to float, with continuous deformation in soil due to change in equilibrium condition.

本文言語英語
ホスト出版物のタイトルAdvances in Sustainable Construction and Resource Management
編集者Hemanta Hazarika, Gopal Santana Madabhushi, Kazuya Yasuhara, Dennes T. Bergado
出版社Springer Science and Business Media Deutschland GmbH
ページ693-703
ページ数11
ISBN(印刷版)9789811600760
DOI
出版ステータス出版済み - 2021
イベント1st International Symposium on Construction Resources for Environmentally Sustainable Technologies, CREST 2020 - Fukuoka, 日本
継続期間: 3 9 20213 11 2021

出版物シリーズ

名前Lecture Notes in Civil Engineering
144 LNCE
ISSN(印刷版)2366-2557
ISSN(電子版)2366-2565

会議

会議1st International Symposium on Construction Resources for Environmentally Sustainable Technologies, CREST 2020
国/地域日本
CityFukuoka
Period3/9/213/11/21

All Science Journal Classification (ASJC) codes

  • 土木構造工学

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