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최용규,김원철,정창규,이민희,김태훈 한국지반환경공학회 2002 한국지반환경공학회논문집 Vol.3 No.3
Based from the results of various field and laboratory tests, it was determined that VCCP(Vibrated Crushed-stone Compaction Pile) Method is more effective compared to SCP(Sand Compaction Pile) Method. VCCP method effectively increases soil bearing capacity and reinforces soil and slopes, prevents liquefaction, enhances drainage. But when it comes to the engineering design these factors are not considered, instead designs are performed using practical methods and equations. Furthermore, this method is very economical since crushed stone can be used instead of sand and it can be also used in off-shore construction. In this paper, it will be synthetically considered technical state at the present time, research object after this and necessity of research for VCCP Method. 여러 가지 현장 시험과 실내 시험 결과 진동쇄석말뚝공법은 기존의 모래말뚝공법에 비해 지지력증대, 지반보강, 사면보강, 액상화 방지억제 그리고 배수촉진 등의 효과를 극대화할 수 있는 공법으로 알려져 있으나, 설계실무에서는 경험적인 방법이나 공식에만 의존하여 설계가 이루어지고 있는 상태이다. 또한, 이 공법은 경제성을 갖춘 대체재료(즉, 쇄석)의 활용이 가능한 공법으로 해안 구조물의 시공에 적극적으로 활용가능한 공법이다. 본 연구에서는 쇄석말뚝에 대한 현 단계에서의 기술적 수준과 향후 연구방향 및 연구의 필요성에 대하여 고찰하였다.
최용규 한국사회과교육연구회 1998 사회과교육 Vol.- No.31
This paper aims to consider the plan for succeed task - i.e. a textbook development, the strategy for grouping Learners according to their ability, and the teaching and learning Method in open class etc. - after the 7th curriculum development which stands for the 'Differentiated Curriculum centered on Learner'. For this purpose, First, the theoretical Backgrounds of the "Differentiated Curriculum centered on Learner' is studies in connection with 'Self-directed learning', 'Open education', 'Constructivism', 'Cooperative learning'. Second, The study shows The characteristics of Enrichment and Supplement Differentiated Curriculum', adopted in Social studies as Nation Common Basic Subject, and examines the spirit of 'Differentiated Curriculum based on Learner' presented in the content of The Section 'characteristics', 'Purpose', 'Teaching-learning method', 'Evaluation' in the 7th Social Studies curriculum document. Finally, On the basis of the previous discussion, the plan for Textbook Development and the implementation of Differentiated Curriculum is proposed as follow: 1) the differential construction of basic course and enrichment course in textbook 2) a promotion of self-directed learning ability, a localization of Curriculum, and a integrated approach based on problems or topics, 3) The provision of textbook in relation to various learning materials, 4) the embodiment of open education spirit, 5) the transformation of evaluation system, 6) reconsideration of teacher's professionalism.
현장검증시험에 의한 선단변형 PHC말뚝들의 연직하중 지지특성에 관한 연구
최용규,김명학 한국지반공학회 2018 한국지반공학회논문집 Vol.34 No.11
PHC piles, extension-plate attached PHC piles, and steel pipe attached PHC piles were installed in field test site. Axial compressive static load tests including load distribution test and Pile Driving Analyzer (after driving) were done on the tip-transformed PHC piles and the grouted tip-transformed PHC piles. Load-displacement curves of three different type of PHC piles, which are PHC pile (TP-1), extension plate attached PHC pile (TP-2) and steel pipe attached PHC pile (TP-3), showed almost the same behavior. Thus bearing capacity increase effect of the tip-transformed PHC piles was negligible. Share ratio of side resistance and end bearing resistance for PHC pile, extension plate attached PHC pile, and steel pipe attached PHC pile were 95.8% vs. 4.2%, 95.6% vs. 4.4%, and 97.8% vs. 2.2% respectively.