Comparison of MCC and SSC Models Based on Numerical Analysis of Consolidation Test

Byenghae Kwon; Sunghoon Eam

doi:10.5389/KSAE.2024.66.2.001

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2024 Vol.66, Issue 2 Next Page

Comparison of MCC and SSC Models Based on Numerical Analysis of Consolidation Test 압밀시험의 수치해석에 의한 MCC 모델과 SSC 모델 비교

2024. pp. 1-12

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Abstract

In order to integrate two consolidation theories of Terzaghi’s consolidation theory and Mesri’s secondary compression theory and to identify a model suitable for analyzing stress-strain behavior over time, numerical analysis on consolidation tests were conducted using a modified cam-clay model and a soft soil creep model and the following conclusions were obtained. The results of numerical analysis applying the theory that a linear proportional relationship is established between the void ratio at logarithmic scale and the permeability coefficient at logarithmic scale is better agreement with the result of oedometer test than the results of applying constant hydraulic conductivity. The modified cam-clay model is a model that does not include secondary compression, but the slope of the normal consolidation line corresponding to the compression index of the standard consolidation test includes secondary compression, so the actual settlement curve over time is lower than the predicted value through numerical analysis. It always gets smaller. Other previous studies that applied Terzaghi’s consolidation theory to consolidation test analysis showed the same results and were cross-confirmed. The soft soil creep model, which includes secondary compression in the theory, showed good agreement in all sections including secondary compression in the consolidation test results. It was judged appropriate to use a soft soil creep model when performing numerical analysis of soft clay ground.

Keywords

Consolidation

oedometer test

numerical analysis

modified cam-clay model

soft soil creep model

References

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Information

Publisher :The Korean Society of Agricultural Engineers
Publisher(Ko) :한국농공학회
Journal Title :Journal of Korean Society of Agricultural Engineers
Journal Title(Ko) :한국농공학회논문집
Volume : 66
No :2
Pages :1-12
Received Date : 2023-11-11
Revised Date : 2024-01-17
Accepted Date : 2024-01-17
DOI :https://doi.org/10.5389/KSAE.2024.66.2.001

Journal of Korean Society of Agricultural Engineers ISSN:1738-3692(Print) 2093-7709(Online) 한국농공학회논문집

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