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Experimental and Numerical Studies for Sedimentation and Consolidation Characteristics of Dredged Soil in Songdo Area, Incheon
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인천 송도지역 준설토의 침강 및 압밀특성에 대한 실험 및 해석적 연구

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Type
Academic journal
Author
Chung-Won Lee (국민안전처) Hangseok Choi (Korea University)
Journal
Korean Geo-Environmental Society Journal of the Korean Geo-Environmental Society Vol.17 No.2 KCI Accredited Journals
Published
2016.2
Pages
13 - 22 (10page)

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Experimental and Numerical Studies for Sedimentation and Consolidation Characteristics of Dredged Soil in Songdo Area, Incheon
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Accurate settlement estimation of dredged soft soil deposits is significantly important to prevent potential disasters during land reclamation. An application of the non-linear finite strain consolidation theory is inevitable in dealing with a very soft ground formation such as dredged fill. In this paper, a series of the sedimentation-consolidation test, self-weight consolidation test and CRS test were conducted to clarify sedimentation and consolidation characteristics of dredged fill in the Songdo area, Incheon. In addition, the settlement of dredged fill was numerically simulated using the PSDDF program. The dredged soil obtained from the Songdo area was classified as low-compressible silt (ML) based on USCS (Unified Soil Classification System), and the final bulking factors were estimated to be 1.56 and 1.17 by Yano’s method and the numerical simulation, respectively. This difference is attributable to relatively high reclaimed height and large permeability of dredged soil in this region.
#Dredged soil #Non-linearity #Finite strain consolidation theory #Sedimentation-consolidation #Self-weight consolidation #Numerical simulation #준설토 #비선형성 #유한변형 압밀이론 #침강압밀 #자중압밀 #수치해석

Contents

ABSTRACT
요지
1. 서론
2. 이론적 배경
3. 실험내용 및 방법
4. 시험결과 및 분석
5. 수치해석
6. 결론
References

References (12)

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Cargill, K. W. (1982), Consolidation of soft layers by finite strain analysis (No. WES/MP/GL-82-3), Army Engineer Waterways Experiment Station Vicksburg MS Geotechnical Lab. google schola Cargill, K. W. (1984), Prediction of consolidation of very soft soil, Journal of Geotechnical Engineering, Vol. 110, No. 6, pp. 775~795. google schola Carrier, W. D. and Beckman, J. F. (1984), Correlations between index tests and the properties of remoulded clays, Geotechnique, Vol. 34, No. 2, pp. 211~228. google schola Gibson, R. E., England, G. L. and Hussey, M. J. L. (1967), The theory of one-dimensional consolidation of saturated clays, Geotechnique, Vol. 17, No. 3, pp. 261~273. google schola Gibson, R. E., Schiffman, R. L. and Cargill, K. W. (1981), The theory of one-dimensional consolidation of saturated clays, II. Finite nonlinear consolidation of thick homogeneous layers, Canadian Geotechnical Journal, Vol. 18, No. 2, pp. 280~293. google schola

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UCI(KEPA) : I410-ECN-0101-2016-532-002503846