Japan Society of Civil Engineers 2019 Annual Meeting

Presentation information

第I部門

港湾・盛土の耐震

Tue. Sep 3, 2019 8:40 AM - 10:10 AM I-2 (幸町北3号館 312講義室)

座長:一井 康二(関西大学)

[I-36] Dynamic analysis of air injected desaturation method adapted to foundation ground of embankment

渡邉 英2、石田 充2、楠 謙吾1、大谷 裕司1、梅田 和成1、*岡部 登1 (1. ニュージェック、2. 愛知県)

Keywords:desaturation, air injection, embankment, liquefaction counter measure, finite deformation analysis

Air injected desaturation method is a newly developed inexpensive liquefaction countermeasure. The authors carried out two-dimensional effective stress analysis using code FLIP to simulate the behavior of embankment during earthquake adapted the method to its foundation ground. This method can reduce settlement of top of the embankment for Level 1 earthquake ground motions. However, it was not effective for Level 2 earthquake ground motions under the conditions of this site. The effectiveness of this method depends on original liquefaction resistance of its foundation soil, which was very low of this site. It will be effective for the site having higher liquefaction resistance than this site.

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