A METHOD OF SEEPAGE-DEFORMATION COUPLED ANALYSIS OF UNSATURATED GROUND AND ITS APPLICATION TO RIVER EMBANKMENT

• KATO Ryosuke

  株式会社日建設計シビル 地盤調査設計部

• OKA Fusao

  京都大学大学院 工学研究科

• KIMOTO Sayuri

  京都大学大学院 工学研究科

• KODAKA Takeshi

  名城大学 理工学部

• SUNAMI Susumu

  株式会社日建設計シビル 土質研究室

Bibliographic Information

Other Title

• 不飽和浸透－変形連成解析手法と河川堤防への適用

Abstract

In the present paper, a water-soil coupled elasto-plastic finite element analysis method has been proposed for unsaturated river embankment by incorporating unsaturated soil-water characteristics. The simplified three-phase method has been developed based on the multi-phase porous theory by assuming that the compressibility of pore air is very high. It is shown that the proposed soil deformation-seepage flow coupled analysis method is applicable for simulating the behavior of river embankments during seepage flow. The method has been verified by simulating experimental results of seepage flow and one-dimensional flow problem. Then, using the proposed method behaviors of river embankments with different initial saturations and different permeability coefficients during the high river water level have been numerically analyzed. From the numerical work, seepage-deformation characteristics of river embankment, the effects of permeability, and the initial saturation have been clarified.

Journal

• Doboku Gakkai Ronbunshuu C

  Doboku Gakkai Ronbunshuu C 65 (1), 226-240, 2009

  Japan Society of Civil Engineers

Keywords

• multiphase coupled analysis
• unsaturation
• seepage
• river embankment
• finite element method

Details

• CRID: 1390001205255025920
• NII Article ID: 130004468326
• DOI: 10.2208/jscejc.65.226
• ISSN: 1880604X
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed