• KSCE Journal of Civil and Environmental Engineering Research
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• v.9 no.2
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• pp.115-123
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• 1989

A computer program evaluating the pile downdrag is developed using the conventional elastic solid method. Modification of the conventional method has been performed by introducing the concept of critical relative displacement. A simple transfer function method which employes the critical relative displacement as a pile-soil slip criterion and calculates downdrag by Mohr-Coulomb equation, has also been developed. The results of three methods are all found to be in good agreement with field observations. When they are applied to a centrifuge modeling problem of pile downdrag to predict its result, however, diverse answers are obtained. Overall, the simple transfer function method developed in this study seems to be the most effective in the evaluation of pile downdrag, considering the quality of its result and its efficiency in computation.

• Cement
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• s.83
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• pp.17-21
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• 1981

• Geotechnical Engineering
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• v.5 no.1
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• pp.61-68
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• 1989

• The Korean Journal of Archival Studies
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• no.73
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• pp.125-159
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• 2022

This study reviewed the archival collecting methodology so that the documentation method such as collecting about missing archives in BUMA Democratic uprising is prepared for and it progressed the pre-analysis by applying to working models of 'documentation strategy' that Larry Hackman and Joan Warnow-Blewett suggested. First of all, I generally examined BUMA Democratic Uprising and narrowed the scope into MASAN Uprising in order to deduce the effective documentation method, performing the pre-analysis centering on MASAN Uprising. In succession, by analyzing the type and activity of an action group of MASAN Uprising, I organized the area of MASAN Uprising documentation. Finally, by selecting some action groups of MASAN Uprising, I investigated archives in person. Based on this, I suggested the investigation and analysis of the present-condition of missing archives, the preparation for collecting policies, active collecting, the establishment of management policy of collecting archives and the detailed management strategy about integrated management.

• Korea and Global Affairs
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• v.1 no.2
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• pp.33-84
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• 2017

This study deals with President Park Chung-hee's greed for dominance and oppression during the Yushin Regime in the 1970's and consists of case studies related to anti-democracy of the National Council for Unification Subject, illegality of President's emergency rule and oppression in the process of putting down Buma Uprising. The National Council for Unification Subject was an organization for presidential selection and institutionalized by the enactment of Yushin constitution. Emergency rule was carried into effect as a means to repressing college students and forces out of office for the president's long-term seizure of power. And Buma Uprising rose against violence in resistance to the Yushin regime and president Park Chung-hee's greed for dominance and oppression. These case analyses applied the aspects of causal relationship(birth and fall of Yushin Regime), legal system(Yushin constitution and president's emergency rule) and behavior(President Park's greed for dominance and oppression) for this study. The National Council for Unification Subject institutionalized through Yushin constitution and the Yushin regime formed by emergency rule enabled President Park to cling to long-term seizure of power by means of greed for dominance and oppression. After all, his failure to keep the spirit of the time and stepping stone for democratic constitutional government triggered Buma Uprising, a kind of anti-Establishment movement, and caused the fall of the Yushin regime.

• Geotechnical Engineering
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• v.19 no.5
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• pp.28-34
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• 2003

• Proceedings of the Korean Geotechical Society Conference
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• 1997.10a
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• pp.373-382
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• 1997

• Proceedings of the Korean Geotechical Society Conference
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• 1996.03a
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• pp.145-154
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• 1996

• 한국도로학회지:도로
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• v.13 no.3
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• pp.37-43
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• 2011

• Journal of the Korean Geotechnical Society
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• v.25 no.9
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• pp.5-17
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• 2009

The microcomputer program PileNSF (Pile Negative Skin Friction) is developed by the authors in a graphical user interface (GUI) environment using $MATLAB^{(R)}$ for predicting the bearing capacity of a pile embedded in a consolidating ground by surcharge loading. The proposed method extends the one-dimensional soil-pile model based on the nonlinear load transfer method in OpenSees to perform an advanced one-dimensional consolidation settlement analysis based on finite strain. The developed program has significant features of incorporating Mikasa's finite strain consolidation theory that accounts for reduction in the thickness of the clay layer as well as the change of the soil-pile interface length during the progress of consolidation. In addition, the consolidating situation of the ground by surcharge filling after the time of pile installation can also be considered in the analysis. The program analysis by the presented method has been verified and validated with several case studies of long-term test on single piles subjected to negative skin friction. Predicted results of negative skin friction (downdrag and dragload) as a result of long from consolidation settlement are shown to be in good agreement with measured and observed case data.