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2013 Vol.12, Issue 3 Preview Page
Characteristics of Stress-Strain for Pocheon stone sludge

포천석분의 응력-변형률 거동특성

Chan-Kee Kim1
,
Gueon-Jun Bak2
,
Won-Beom Cho3
,
Jong-Cheon Lee4*
김 찬기1
,
박 권준2
,
조 원범3
,
이 종천4*
1Professor, Dept. of Civil Engineering, Daejin University
2 Manager, Hanshin Engineering and Construction Co.
3Korea Institute of Construction Technology,
4Assistant Professor, Dept. of Civil Engineering & Landscape Architecture, Dongkang College
*교신저자. *Corresponding Author. 
30 September 2013. pp. 55-64
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Abstract

In this study, a series of the isotropic compression-expansion tests and the Undrained triaxial tests were performed on low-plastic silt of Pocheon stone sludge. Using the tests results the characteristic of the parameters of Lade's single hardening constitutive model were investigated. We also observed that predicted values from the Lade's single hardening constitutive model were well consistent with the observed data. In experimental results the deviator stress showed the work hardening behaviour after reaching its yield stress. Therefore practically useful failure criterion for low-plastic silt were required. The stress-strain behavior predicted by 11 soil parameters are compared with the results obtained 9 parameters by correlation between h and and constant . They are poor matched each other.

Keywords
Single Work-Hardening Constitutive Model
Pocheon Waste Stone Sludge
Drained Traxial Test

본 연구는 포천석분을 재성형하여 등방압축-팽창시험과 구속압력을 달리한 일련의 비배수삼축압축시험을 실시하여 Lade 단일항복면 구성모델의 토질매개변수를 결정하였으며, 실험결과의 역해석을 통하여 단일항복면 구성모델의 적용성과 포천석분의 거동특성을 확인하였다. 그 결과 포천석분은 축변형률이 증가함에 따라 축차응력이 증가하는 경화현상을 보이고 있으며 큰 축변형률에서 파괴되므로 실용적인 파괴기준을 검토할 필요성을 확인하였으며, 구성모델의 11개 토질매개변수를 이용하여 시험치를 역해석한 결과 응력-변형거동을 양호하게 예측하지만 항복함수에 관련된 토질매개변수를 파괴규준에 관련한 상관식과 상수로 역해석한 경우는 다소 상이한 양상을 보이고 있다.

References
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Information
  • Publisher :Korean Geosythetics Society
  • Publisher(Ko) :한국지반신소재학회
  • Journal Title :Journal of the Korean Geosynthetics Society
  • Journal Title(Ko) :한국지반신소재학회 논문집
  • Volume : 12
  • No :3
  • Pages :55-64
  • Received Date : 2013-08-30
  • Revised Date : 2013-09-24
  • Accepted Date : 2013-09-25
  • DOI :https://doi.org/10.12814/jkgss.2013.12.3.055
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