Top-Down 공법이 적용된 지중연속벽의 설계시 측방토압의 적합성 평가

홍원표(Hong Won-Pyo),강철중(Kang Chul-Joong),윤중만(Yun Jung-Mann) 한국토목섬유학회 2012 한국지반신소재학회 논문집 Vol.11 No.1

본 연구에서는 지중연속벽 설계시 사용되는 범용 해석프로그램에 Rankin(1857)의 이론토압과 홍원표와 윤중만(1995a)의 경험 토압을 각각 적용하여 Top-Down 공법에 적용된 지중연속벽의 수평변위를 분석하였다. 그리고 이들 해석 프로그램에서 산정된 예측변위량과 지중경사계로 측정된 실측변위량을 비교 검토하였다. 현재 지중연속벽 설계에 적용되는 해석프로그램에는 Rankine의 토압이 주로 적용되고 있다. 검토결과, 지중연속벽의 예측수평변위는 적용되는 토압에 따라 상당히 큰 차이를 나타내고 있다. Rankine의 토압을 적용하여 산정된 예측수평변위 형상은 실측결과와 큰 차이를 보이고 있으며 벽체의 하부에서 예측치가 실측치보다 과다하게 산정되었다. 반면, 홍원표·윤중만의 토압을 적용하여 얻은 예측수평변위 형상과 최대수평변위 량은 실측결과와 유사하게 나타났다. 따라서 Top-Down 공법이 적용된 지중연속벽의 설계시 Rankine의 토압보다는 홍원표·윤중만의 경험토압을 적용하는 것이 적합함을 알 수 있다. The Rankine(1857)'s earth pressure and the Hong and Yun(1995a)'s earth pressure was applied to analyze the lateral displacement of diaphragm wall applied to the Top-Down construction method using the computer program, which is a common design program for diaphragm wall. The lateral displacement estimated by the computer program was compared with the lateral displacement measured by inclinometer. The Rankine's earth pressure has been widely used to design the diaphragm wall in the analysis of computer program. As the result of comparison, the lateral displacement of diaphragm wall was predicted differently according to the applied earth pressures. The behavior of lateral displacement predicted by the Rankine's earth pressure was different with displacement measured by inclinometer and the lateral displacement at the bottom part was overestimated. However, the lateral displacement predicted by the Hong and Yun's earth pressure is similar to the behavior and maximum value of real displacement. Therefore, the Hong and Yun's earth pressure is more suitable than the Rankine' earth pressure to design the diaphragm walls applied to the Top-Down Construction Method.

논문 : Top-Down 공법이 적용된 흙막이벽의 역해석을 이용한 거동분석

홍원표 ( Won Pyo Hong ),강철중 ( Chul Joong Kang ),윤중만 ( Jung Mann Yun ) 대한지질공학회 2012 지질공학 Vol.22 No.1

본 연구에서는 흙막이벽 설계시 널리 사용되고 있는 SUNEX 프로그램을 이용하여 Top-Down 공법이 적용된 지중연 속벽, 주열식 흙막이벽 (CIP벽, SCW벽)의 변형거동을 분석하였다. 해석프로그램에 Rankine의 토압(l857), Terzaghi and Peck의 토압(1967), Tschebotarioff의 토압(1973), 홍원표·윤중만의 토압(1995a)을 적용하여 흙막이벽의 수평변위를 예측하였다. 프로그램 해석결과, 흙막이벽의 수평변위량은 토압의 종류에 따라 큰 차이를 나타내고 있다. 홍원표·윤중만의 토압(I995a)을 적용하여 얻은 흙막이벽의 예측수평변위량이 실측수평변위량과 가장 유사하게 나타났다. 따라서 프로 그램 해석시 홍원표·윤중만의 경험토압(l995a)을 적용하면, Top-Down 공법이 적용된 흙막이벽의 변형거동을 비교적 정확히 예측할 수 있다. Abstract: The behaviors of a diaphragm wall and a contiguous pile wall such as CIP (Case-in-place pile) and SCW (Soil-cement wall), applied to the top-down construction method, were analyzed using the SUNEX program, which is widely used to design earth retaining walls. Four types of earth pressures, as described by Rankine (1857), Terzaghi and Peck (1967), Tchbotarioff (1973), and Hong and Yun (1995a), were applied to the analysis program to predict the lateral displacement of walls, The results show that the displacements of an earth retaining walls vary with the applied earth pressure. The predicted lateral displacement based on Hong & Yun`s (1995a) earth pressure is similar to the measured displacement. Therefore, the actual lateral displacement of an earth retaining wall, as applied to top-down construction method, can be accurately predicted by using an analysis program considering Hong and Yun`s (1995a) earth pressure.

Oil Contents and Fatty Acid Composition of Korean Perilla (Perilla ocimoides L.) Collections

Hong,Seong-Taek,Son,Suk-Yeong,Jong,Seung-keun,Rho,Chang-Woo,Yun,Jong-Sun 한국자원식물학회 2003 Plant Resources Vol.6 No.3

This study was carried out to obtain informations on the variations of oil content and fatty acid composition among 90 Korean perilla collections. Average oil content of 90 perilla collections was 44.2% with a range from 29.7% to 61.9%. Perilla collections with late-maturing, super-large seed and gray seed coat showed higher oil content than other types in general. Average saturated fatty acid content in perilla oil was 9.0% with a range from 8.2% to 10.7%, while average unsaturated fatty acid content varied from 89.3% to 91.8% with a mean of 91.0%. Contents of saturated and unsaturated fatty acids were not related to maturity. There were no differences in the contents of saturated and unsaturated fatty acids according to maturity. Linoleic acid and linolenic acid contents were the highest in the super large-sized group(15.5%) and in the large-sized seed group(61.4%), respectively, while contents of fatty acids among the perilla collections were variable with different seed coat colors. Most of the traits studied were not significantly correlated with oil content, but linoleic acid($\omega$ 수식 이미지-6) content was negatively correlated (r=-0.217*) with linolenic acid(ω-3) content.

KAL기 추락에 의한 대량재해의 개인식별

강신몽,이원태,고영창,최상규,김윤희,이홍석,서재관,윤중진,이혜경,최득린,김종열,윤창육,변명식,이장홍 大韓法醫學會 1991 대한법의학회지 Vol.15 No.2

Individual identification is an important part in medicolegal field especially in mass disaster. At July, 27, 1989, KAL KE-803 was crashed on landing at Tripoli International Airport, Liba. The plane was caught in fire and sixty eight Koreans were sacrified. The majority of victims were severely charred and injured. The authors examed all dead bodies and successfully identified all the cases through visual, anthropological, odontological, radiological and pathological methods including fingerprint and blood typing.

Calcium Oxide의 Hydration Resistance에 關한 硏究

洪允命 연세대학교 대학원 1974 延世論叢 Vol.11 No.1

This study was performed to investigate the hydration resistance of calcia which was sintered below 1,400℃. In this study, the effects by the additives, maturing conditions, hinder addition, compacting pressure, relative humidity, etc., have been studied with a measurement of hydration ratio. Hydration ratio was measured by TGA, X-ray diffraction analysis and weight gain information. Fe2O3, Cr2O3, TiO2 were used as additives and organic compounds such as methanol, toluene, petroleum ether, oleic acid, as binders. As a result, maturing temperature and additive variations are presented as the evidence for the reducing the hydration ratio. Especially, hydration resistance of calcic can be increased by the formation of protective layer of calcium carbonate on the surface. The experiments were operated in a carbon dioxide atmosphere in 700˚∼750℃ On the basis of this study, the optimum conditions were presented when the addition of TiO2 is 0.6∼0.8%, maturing conditions are 1,300℃, 2hr and the addition of petroleum ether+oleic acid as binder.

揷木發根에 對한 考察

尹弘泰 서울 敎育大學校 1969 論文集 Vol.2 No.-

민주적 공론장에서의 담론적 실천으로서 `진보-보수-관계`의 작동과 그 한국적 상황

홍윤기 사회와 철학 연구회 2002 사회와 철학 Vol.0 No.4

동종이식골의 탈회정도가 이소성 골형성유도에 미치는 영향

윤홍식 慶北大學校 齒科大學 1997 慶北齒大論文集 Vol.14 No.-

동종이식골내의 탈회정도에 따른 잔존 칼슘피가 이소성 골형성능에 미치는 영향을 파악하고자 Sprague-dawley계 백서에서 채취한 경골및 대최골의골간부를 0.5cm크기로 절단하여 부착 연조직은 제거한 다음 초음파 세척장치를 이용하여 60℃ 0.6N HCI용액 5분, 10분, 15분, 20분, 25분, 30분, 35분, 40분간 각각 처리하여 탈회 동종이식골을 준비하였다. 이때 탈회시간에 따른 시편의 무게를 측정하였고, 각 탈회용 액으로부터 1cc를 취한 다음 Sigma사의 진단용 칼슘피 측정 kit를 이용하여 spectrophotometer의 600mm파장하에서 칼슘측정을 시행하였다. 그리고 탈회정도에 따른 이식골편의 골형성 유도능을 확인하기 위하여 24마리의 Sprague-Dawley계 백서를 탈회사간별로 8군으로 나누어 배부에 0.5cm크기로 4군데의 피하낭을 형성한후 각각의 처리된 탈회이식골편을 이식하였다. 매식된 동종이식골편들을 술후 1, 2, 3주째 채취하여 통법에 따라 H-E염색 표본을 제작하여 광학현미경으로 관찰하였다. 이상의 실험에서 다음과 같은 결과를 얻었다. 1. 탈회30분가지의 용출되는 칼슘농도변화가 평균 15.91mg/ml로, 탈회20분 이후에 평균 99.65%의 탈회정도를 보였다. 2. 동종골 무게변화량은 탈회시작 25분까지 뚜렷한 무게변화를 보였으나, 그 이후에는 변화정도가 미약하였다. 3. 탈회된 이식동종골에 의한 이소성골형성 유도능 비교에서 20분에서 30분간 탈회된군에서 가장 양호하였고 그 외의 군에서는 그 정도가 열등하였다. 이상의 결과는 탈회된 동종골에 있어 골형성 유도능을 극대화하기 위해서는 골기질내의 무기성분의 완전한 탈회가 선행되어야 하며 탈회골기질의 변성이 최소화되어야 함을 시사한다.

중국지역의 청동기시대 주거유형 : 商시대를 중심으로

尹弘澤 建國大學校 附設 産業技術硏究所 1988 논문집 Vol.13 No.-

Ⅰ. Objectives of Research: The objectives of this study are to research the environmental conditions, the settlement patterns and the architectural style of Shang China in Bronze Age. Ⅱ. Scope and Method: 1. Initially, in order to understand the life of early mankind, following items are analyzed. 1) Landscape and climate conditions 2) Plants, wild and domestic animals 3) Socio-economic patterns 4) Ruling apparatus of Shang 5) Building materials and tools 2. Then, their architectural remains are analyzed in close relationships with above items. 3. Although emphasis is laid on Shang period of China in Bronze Age, a comparison of the Shang and Neolithic period are made intentionally. Ⅲ. Fact Findings: The Bronze Age in China(1900 B.C.∼ 770B.C.) includes Hsia, Shang and Chou civilization. In this period, the socio-economic characteristics emerging from the Upper Neolithic period (3400B.C∼1900B.C.: chiefdom society) had crystalized into a concrete form in quantity and quality. And this characteristics influenced directly to the residential architecture in Bronze Age: they are the utilization of land-use, settlement patterns, and a style and technique of the architecture.

지베렐린과 Putrescine이 대두 절간의 세포 신장과 분열에 미치는 영향

윤상숙,박홍덕 효성여자대학교 부설 한국환경위생연구소 1991 환경위생연구 Vol.1 No.1

대두 제1절간에 지벨렌린, putrescine, MGBG 및 지베벨린과 'Put 혼합 물질을 농도 및시간에 따라 처리하여, 각 피층의 유조직 세포 크기를 측정하고 세포신장과 분열부위를 관찰하였다. 세포 신장은10^-6M지베렐린의 경우 Ⅱ부위, 10^-2MPut은 I부위,10^-2M MGBG는 I부위이며,처리시간은 모두 60시간에서 세포신장이 가장 활발하였다. 지베렐린과 Put을 섞어 처리한 경우는 단독으로 처리하였을 때 보다 세포 신장에서 큰 효과가나타났으나, 세포분열에는 나타나지 않았다. 대두 첫번째 절간에서 세포 신장 부위와 분열부위는 일치하지 않았다. The zone of cell elongation and cell division was observed in the parenchyma cell of cortex in Glycine max when it was treated with Gibberellin(GA),Putrescine (Put), methylglyoxal-bis(guanylhydrazone) (MGBG) and GA+ Put. The cell elongation was observed in all parts and specially enhanced in Ⅱ,I and I zone of internode treated with GA, Put and MGBG, respectively. Theoptimal concentration was 10^-6M GA, 10mM Put and 10mM MGBG. The cellelongation was enhanced in 60hrs. The cell division was prospered in Ⅲ zone of internode treated with GA,Put and MGBG and the optimal concentration was 10-4M,10mM and 10mM indi-vidually. The cell division was enhanced in 60 hrs. The cell elongation was enhan-ced more GA+ Put than GA and Put independently, but it was not effectivelyin the cell division. The cell elongation zone was not consistent with cell division zone in thefirst internode of soybean.