Numerical Simulation of Liquefaction Mitigation by Using Grout Under Existing Building

Myat Myat Phyo Phyo, Hemanta Hazarika, Hiroaki Kaneko, Tadashi Akagawa

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

抄録

Ground improvement using jet grout columns is a well-known technique to mitigate liquefaction hazard in sand stratum under existing building. However, the performance of conventional jet grout reinforcement technique has not achieved the sufficient level yet in terms of reducing shear strains and excess pore water pressure generated within the liquefiable soil layer. Therefore, a new countermeasure method, using small diameter jet grout column with additional horizontal slab, is introduced to control the shear deformation and excess pore pressure more effectively. To determine the efficiency of the new countermeasure method, numerical studies on unimproved and improved ground were separately performed in this study. The effectiveness of jet grout column with horizontal slab was evaluated by comparing the changes in excess pore water pressure, acceleration as well as distribution of shear stress and shear strain in the liquefiable soil before and after improvement. The results showed that the new liquefaction mitigation method offers positive effect on control of excess pore water pressure and shear deformation.

本文言語英語
ホスト出版物のタイトルProceedings of the Indian Geotechnical Conference 2019 - IGC-2019
編集者Satyajit Patel, C. H. Solanki, Krishna R. Reddy, Sanjay Kumar Shukla
出版社Springer Science and Business Media Deutschland GmbH
ページ557-568
ページ数12
ISBN(印刷版)9789813364431
DOI
出版ステータス出版済み - 2021
イベントIndian Geotechnical Conference, IGC 2019 - Surat, インド
継続期間: 12 19 201912 21 2019

出版物シリーズ

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

会議

会議Indian Geotechnical Conference, IGC 2019
国/地域インド
CitySurat
Period12/19/1912/21/19

All Science Journal Classification (ASJC) codes

  • 土木構造工学

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