Mechanical Properties and Localization of Displacements in Soil Sampled on Farmlands in Landslides

• KAWAMOTO Osamu

  National Institute of Rural Engineering

• MIYAZAKI Tsuyoshi

  Graduate School of Agricultural and Life Sciences, the University of Tokyo

• NAKANO Masashi

  Emeritus Professor, the University of Tokyo

Bibliographic Information

Other Title

• 地すべり崩土の力学特性と変形の局所化
• ジスベリホウド ノ リキガク トクセイ ト ヘンケイ ノ キョクショカ

Abstract

Regarding the issue of the long-term stability of slopes in farmlands composed of clayey materials, experimental results of tests on mechanical properties and localization of displacements were presented, with special reference to first-time failures. Shear band width at the medium strain range (up to about 15 percent of axial strain) observed in a consolidated and drained triaxial compression test of an undisturbed sample seemed to be appropriate as the width of the displaced zone composed of soil masses between discontinuities such as fissures, and this was different from granular materials for which particle size had great importance. <br>Based on this result, parameters of Tanaka's finite element model were evaluated and a simulation of a triaxial compression test was performed. The result of finite element analysis of an elastic and strain-softening plastic model showed that the finite element solution matched the experimental results in the sense that it matched the average value of specimens which showed various behaviors owing to their stress history in landslides.

Journal

• Transactions of The Japanese Society of Irrigation, Drainage and Rural Engineering

  Transactions of The Japanese Society of Irrigation, Drainage and Rural Engineering 77 (4), 385-393, 2009

  The Japanese Society of Irrigation, Drainage and Rural Engineering

Keywords

• Landslide
• Displacement localization
• Strain-softening
• Shear band
• Finite element method

Details

• CRID: 1390001205285335936
• NII Article ID: 10025641591
• NII Book ID: AA12240517
• DOI: 10.11408/jsidre.77.385
• ISSN: 18847242
• ISSN: 18822789
• NDL BIB ID: 10423364
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I10423364
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed