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시화지구 연약점토의 광물학적 특성과 공학적 특성의 상관관계
김낙경,박종식,주용선,Kim Nak-Kyung,Park Jong-Sik,Joo Yong-Sun 한국지반공학회 2004 한국지반공학회논문집 Vol.20 No.9
국내 연약지반 활용을 위한 효율적이고 경제적인 안정처리 공법의 선정과 설계 및 시공을 위해서는 대상지반의 특성을 파악하는 것이 대단히 중요하다. 본 연구는 시화지구 연약점토의 물리적, 역학적 특성과 광물학적 특성을 파악하여 연약점토의 물리적, 역학적 특성과 광물학적 특성과의 상관관계를 알아보는 데 그 목적이 있다. 본 연구에서 는 연약점토의 광물학적 특성을 파악하기 위하여 X선 형광분석, X선 회절분석, 주사전자현미경분석과 에너지분산미분석 실험을 실시하였으며 시화지구 연약지반의 시추조사결과, 실내시험 및 현장시험결과와의 상관관계를 알아보았다. 또한 시화지구 연약점토의 특성을 양산과 군산 지역 연약점토의 특성과 비교하였다. The characteristics of soft clays are very important for the land development plan. This study is to investigate correlations between the engineering properties and the characteristics of clay minerals of the undisturbed clay samples obtained from Sihwa area. This study included X-Ray diffraction analysis, X-Ray fluorescence spectrometer analysis, scanning electron microscopy analysis and energy dispersive X-Ray spectrometer analysis. The correlations between the clay mineral properties and the laboratory and field testing results were investigated. The characteristics of soft clay in Sihwa area were compared with those in Yangsan and Kunsan area.
김낙경 ( Kim Nak Kyung ),김성규 ( Kim Sung Kyu ),서효균 ( Seo Hyo Kyun ) 한국구조물진단유지관리공학회 2007 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.11 No.1
A laboratory model tests has been carried out to measure the ultimate load of vertically embedded cylindrical anchors in sand. For the model test, a dimensional analysis of a general anchors was performed. Details of the dimensional analysis of in-situ anchors were presented in this paper. Based on the results of the dimensional analysis, the model-scaled anchorage system was simulated. Anchor model tests were performed on two types of model anchors. One has been shaft and end plate, called composite anchors, the other has been only shaft. Due to the extended plate of the anchor shaft end, both the shaft friction and the end resistance have substantial contribution to the pullout capacity. The pullout load was applied to the bottom of the model anchor through a high strength steel rod of 4mm diameter. Each ultimate loads were measured and compared with the design load.
헬리컬 앵커의 관입토크와 극한인발력 상관관계 도출 시 극한인발력 평가법의 영향
김낙경(Nak-Kyung Kim),나종열(Jong-Yeol Na),김영욱(Young-Uk Kim) 한국산학기술학회 2015 한국산학기술학회 학술대회 Vol.2015 No.1
This study investigated corelation of installation torque and the ultimate uplift capacity of the helical anchor. The investigation involved a seriese of soil chamber tests. Two different methods for determining the ultimated uplift capacity of the anchors were used. The results of the study show that Davisson method illustrated clearer relationship between installation torque and the ultimate uplift capacity of the helical anchor than BS method.