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.

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.

부산시 고령자의 통행행태에 관한 연구

오윤표,안영종,김은정 東亞大學校 建設技術硏究所 2005 硏究論文集 Vol.29 No.1

The purpose of this study os to analyze the elderly's travel behavior and to measure the factors affecting their travel mode choice. Questionnaire survey was conducted for this study. It is assumed that the elderly is over 65 years old for this study. The major results of this study are as follows:(1) Because driving alone is very expensive travel mode, bus is considered as main travel mode for the elderly over 65 years old. (2) The friendship, recreation, an medical treatment are significant travel purpose. It was showed that the elderly's travel pattern is irregular. (3) Going up and down of stairs are the most important restriction for the elderly's travel.

싱가폴의 Electronic Road Pricing System과 도입 효과

오윤표 東亞大學校 建設技術硏究所 1999 硏究論文集 Vol.23 No.1

ERP System(Electronic Road Pricing System) is recently introduced for the reduction of traffic congestion in urbanized area and main streets in Singapore as one of Intelligent Transport Systems. ERP System has been testified and proved very good in Singapore from the aspect of technology and legislative enforcement. The conclusion I suggested at this study is ERP System in Singapore should be introduced into Korea as soon as possible in order to rearrange traffic facilities, create investment fund for the resolution of traffic congestion and reduce traffic congestion resulted from rapid increase in cars. Furthermore, it’s the time for us to prepare the State-of-the-Art technology for the 21st century.

2004년도 도시별 교통문화지수 실태조사

오윤표,안영종 東亞大學校 建設技術硏究所 2005 硏究論文集 Vol.28 No.2

Self-etching primer를 이용하여 접착된 교정용 브라켓의 전단결합강도

안윤표,김효영,전영미,김정기 대한치과교정학회 2003 대한치과교정학회지 Vol.33 No.1

본 연구는 6세대 교정용 접착 시스템인 Transbond Plus Self-Etching Primer(3M/Unitek Dental Products, Monrovia, Calif)를 이용하여 법랑질면에 브라켓을 접착하는 방법과, 통상적인 산부식 방법에 의해 브라켓을 접착한 경우의 전단결합강도 차이를 비교·평가하고, self etching primer를 이용하여 브라켓을 접착할 때 치면에 존재하는 수분이 브라켓의 전단결합강도에 미치는 영향에 관하여 조사하였다. 37% 인산용액과 Self-Etching Primer를 잉용하여 법랑질을 표면 처리하고 Transbond XT를 이용하여 브라켓을 치면에 부착하였다. 또한 수분의 존재에 따른 전단결합강도의 차이를 평가하기 위해 인공타액을 치면에 도포후 Self-Etching Primer를 사용하여 브라켓을 부착한 후 30분과 24시간에 따른 전단결합강도를 비교 평가하여 다음과 같은 결론을 얻었다. 1. Self-etching primer군에서 건조군과 습윤군의 전단결합강도는 37%인산처리군의 결합강도보다 낮았다(p<0.05). 그러나 Self-etching primer군의 전단결합강도는 임상적으로 유용한 수준의 이상이었다. 2. 모든군에서 24시간군의 전단결합강도가 30분군의 전단결합강도보다 높았으며(p<0.05), 이는 브라켓 접착후 일정시간의 경과가 결합강도를 증가시켜 줌을 알 수 있었다. 3. Self-etching primer군에서 습윤군의 전단결합강도는 건조군보다 높은 경향이었으나 통계적 유의성은 인정되지 않았다(p<0.05). 4. ARI 점수의 비교결과 인산처리군에서는 0점과 1점의 빈도가 높았으며, Self-etching primer 건조군과 습윤군에서는 2점과 3점의 빈도가 높아(p<0.05) Self-etching primer군이 인산처리군보다 법랑질-레진 접착계면부위에서의 파절이 많이 일어남을 알 수 있었다. The purpose of this study was to evcaluate the effects of a self-etching primer on the shear bond strength of orthodontic brackets and on the failure pattern of bracket-adhesive interfaces in dry or wet condition. Brackets were bonded to extracted human teeth according to one of three experimental protocols. In the Group P, teeth were etched with 37% phosphoric acid. After the Transbond XT Primer was applied onto the etched surfaces, the brackets were bonded with Transbond XT(3M, Unitek, Monrovia, Calif) and light cured for 40 seconds. In the Group SD, a self-etching primer(3M, Unitek, Monrovia, Calif) was placed on the enamel for 3 seconds and gently evaporated with air, as suggested by the manufacturer. The brackets were then bonded with Transbond XT as in the Group P. In the Group SW, artificial saliva was applied to the enamel surface for 10 seconds to allow complete hydration of the surface before application self-etching primer. The brackets were then bonded following the procedures of Group SD. Each group was divided into 2 sub-groups(0.5h, 24h) according to debonding time shear bond strengths were measured by Instron universal testing machine. After debonding, the teeth and brackets were examined under scanning electron microscope and assessed with the adhesive remnant index. The result obtained were summarized as follows ; 1. The shear bond strengths were high enough to use clinically in all testing groups, but the shear bond strengths of group SD and SW were significantly lower than Group P(p<0.05). 2. With respect to comparison of debonding time, 24h debonding samples exhibited heigher shear bond strength than 0.5h debonding samples in Group P, SD and SW(p<0.05). 3. In the self etching primer groups(Group SD and Group SW), there was no significant difference in mean shear bond stredifference in mean shear bond strength between under dry and wet state(p>0.05). 4. There was a greater frequency of ARI score of 0 and 1 with the Group P. On the other hand, there was a higher frequency of ARI scores of 2 and 3 with Group SD and Group SW(p<0.05).,

오사카 지하철의 특징과 부산 지하철의 방향

오윤표 동아대학교 법학연구소 1999 硏究報告 Vol.22 No.2

The transportation policy of Osaka city is maintained and improved based on the concept of putting all the relevant transport facilities into one systems, which avoids maintaining railway, subway and bus separately and enables to provide the citizen with the best service. The city government continues pursuing the maintenance and improvement plan of the subway intensively because it is expected to play the most important role of transportation among the transport means such as railway, subway, buses in the 21th century. The subway is regarded as the best means in the aspects of speed, safety and mass transport with minimum adverse environmental effect. Herein, it is Intended to suggest the direction of the transportation policy of Pusan city in the light of the subway policy of Osaka city after studying it.

주차정책전환을 위한 제도 개선방안

오윤표 동아대학교 건설기술연구소 1998 硏究報告 Vol.22 No.1

At the present time, Pusan is suffering from parking problem seriously, because the rate of increase in car is overwhelming that of parking place. Therefore, this study investigates parking policy being carried out in developed countries and wants to present concretely an introducing program of new ABC parking policy desirable to Pusan.

국어학 연구 업적 평가의 제문제

홍윤표 국어국문학회 2003 국어국문학 Vol.- No.134

We cannot take off the academic evaluation in these modem days. But we should not judge reports of our research by the purpose of external conditions of academy, i.e, arrangement of a research grant, the promotion of a professor, etc. If a valuation basis of the academic evaluation sticks too much to formalities, Korean studies can not developed.

횡단보도 보행 잔여시간제공에 의한 보행행태의 변화에 관한 연구

오윤표,안영종,정순현 東亞大學校 建設技術硏究所 2005 硏究論文集 Vol.29 No.1

Recently, the countdown signal was introduced to enhance the pedestrian environment of crosswalk. However, research is still insufficient as to how comfortable and safe it is compared to existing signals as well as the most suitable location for installment. The statistical significance of the extent of change of pedestrian moving time on the graph was analyzed through a paired t-test, a before-after study on pedestrian crossing patterns and χ^(2)-test of both groups. Results form the application of the proposed analysis of the study showed that on introduction of the countdown signal, pedestrians will cross more amiably and comfortably than before.