Journal of The Korean Society of Agricultural Engineers (한국농공학회논문집)

The Korean Society of Agricultural Engineers (한국농공학회)
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Creep Characteristics of Weathered Soils and Application of Singh-Mitchell's Creep Formula

풍화토의 크리프 특성 및 Singh-Mitchell 크리프 방정식 적용성 검토

  • 봉태호 (서울대학교 지역시스템공학과) ;
  • 손영환 (위스콘신주립대학교 토목및환경공학과) ;
  • 김성필 (한국농촌공사 농어촌연구원) ;
  • 허준 (한국농촌공사 농어촌연구원) ;
  • 장병욱 (서울대학교 지역시스템공학과)
  • Published : 2009.11.30
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Abstract

Soils exhibit creep behavior in which deformation and movement proceed under a state of constant stress or load. In Korea, weathered soil is abundant and occupies around one-third of the country. Weathered soil is visually described as a sandy or gravelley soil, but the behavior is quite different from the behavior of usual sand and gravel. In particular, the permeability of weathered soil is similar to sand, but the durability of settlement is similar to clay. Therefore analysis of time-dependent behavior of weathered soil is very important. In this study, Creep tests with weathered soils were carried out under constant principal stress differences of various stress levels which were experimentally obtained by triaxial compression test. The results of these tests showed the creep behavior for which the deformation increased with time, and the results are consistent with phenomenological model by creep equation of Singh-Mitchell.

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References

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