연약지반상 고성토 교대구간의 지반거동 특성

허열(Heo Yol),송석철(Song Seokcheol),안광국(Ahn Kwangkuk),오승탁(Oh Seungtak),서상구(Seo Sanggu) 한국지반환경공학회 2008 한국지반환경공학회논문집 Vol.9 No.7

본 연구에서는 모래다짐말뚝으로 개량된 점성토 지반에 고성토시 발생될 수 있는 측방유동과 교대의 안정성을 파악하기 위하여 원심모형실험과 수치해석을 수행하였다.원심모형실험과 수치해석은 교대 배면구간을EPS로 성토한 경우(Case 1)와 토사로 성토한 경우(Case 2)에 대하여 수행하였으며, 모형실험시 교대와 성토체에 potentiometer를 설치하여 교대상부의 수직변위와 수평변위 및 성토체의 수직변위를 측정하였다.원심모형실험결과Case 1에서 교대의 수평변위는 1.4cm 정도로 해석결과와 거의 일치하며, 허용기준을 만족하는 것으로 나타났다. 반면, Case 2에서 교대의 수평변위는 12cm 정도로 해석결과에 비해 18% 정도 크게 평가되었으며, 허용기준을 초과하는 것으로 나타났다. 해석결과 Case 1에서 말뚝의 최대수평변위는 1.26cm로 허용 수평변위 기준(1.5cm)을 만족하는 것으로 나타난 반면, Case 2에서 말뚝의 최대 수평변위는 1.005m로 허용기준을 크게 초과하는 것으로 나타났다. In this study, the centrifuge tests and numerical analyses were performed to investigate the lateral flow behavior and stability of abutment when high filling was applied on the soft ground improved by SCP. The centrifuge model tests and numerical analyses were fulfilled in the case of the back of abutment filled by EPS (case 1) and soil (case 2), and the potentiometer was installed on the abutment and fill to measure the vertical and horizontal displacement at the top of abutment. As a result of the centrifugal tests, the horizontal displacement of abutment in the case 1 was 1.4cm that is almost coincide with the results of numerical and satisfy the allowable standard. On the other hand, the horizontal displacement of abutment in the case 2 was 12 cm that is 18% greater than that of numerical analysis and exceed the allowable standard. As a result of analysis, the maximum horizontal displacement of pile was 1.26 cm in case 1 that satisfies the criterion of allowable horizontal displacement (1.5 cm). In contrast, the maximum horizontal displacement of pile was 1.005 m in case 2 that greatly exceeds the allowable horizontal displacement.

삼위일체 이콘과 삼신불 탱화의 도상학적 비교 연구

조현미(Jo, Hyeon Mi),송석철(Song, Suk Chol) 한국디지털디자인협의회 2015 디지털디자인학연구 Vol.15 No.3

이콘과 탱화는 각각 그리스도교와 불교를 대표하는 종교화로써 단순히 예술적 의미뿐 아니라 예배와 교리 교육 등 신앙생활과 밀접한 관련을 갖고 있다. 이콘과 탱화의 작가들은 그들의 창의적 영감보다는 종교의 의미와 교리를 상징적으로 표현하는 일련의 규칙에 따라 도식화한다. 이런 면에서 이콘과 탱화는 내면적 혹은 외향적 유사성의 공통점을 갖기도 하지만 반면, 각 종교가 표방하는 목적에 따라 도상의 상징과 해석에서 차이점을 갖기도 한다. 본 연구는 ‘초월자-하느님, 부처님’에 대해 유사하게 표현하고 있는 ‘삼위일체’와 ‘삼신불’ 교리를 배경으로 제작된 이콘과 탱화 중 ‘삼위일체’와 ‘청도운문사 비로자나 삼신불’을 중심으로 도상학적 관점에서 비교·분석하였다. 이에 대한 비교·분석은 구도를 비롯해 상징으로써 이미지와 색상이 갖는 의미를 중심으로 이루어졌다. 결론적으로 이콘과 탱화는 종교에서 목적하는 바에 따라 교리나 예배용, 종교 행사 및 신앙생활에 사용될 뿐만 아니라 표현성에 있어서도 평면성, 무원근성, 정면성 등의 외형적 유사성을 비롯해 상징적 표현과 성상 표현의 근거 등 내용적인 면에서도 공통점을 갖고 있었다. 그러나 무엇보다 주목할 것은 삼위일체 성자의 육화와 화신 석가모니불의 존재에 의해 이콘과 탱화가 탄생되었다는 점이다. 즉, 종교화는 단순히 그림이 아닌 이미지로써 ‘상징’과 이미지로 표현하기 위한 기호로써의 ‘상징’을 통해 초월자를 만나는 통로라는 것이다. Icon and Taenghwa are religious paintings that represent The Christian and Buddhism respectively. They have not only artistic meaning but are closely related to religious life such as religious dogma and worship. The artists paint them in diagram form by expressing religious meaning and religious dogma rather than expressing their creative inspiration. In this respect, Icon and Taenghwa have internal and outgoing similarities. But they are different in the symbol and interpretation for a painting considering the purpose of each religion. This study compared and analyzed ‘Trinity’ and Cheongdo Unmunsa "Vairosana Samsinbulhoedo’ that were made with the background of the ideas of trinity and samsinbul that express transcendental God and the Buddha respectively with iconographical viewpoint. The comparison and analysis for it is mainly done for the meanings of images and colors as symbols including the composition. Consequently icon and taenghwa were used for doctrines, prayers and religious ceremonies. They are in common in the appearance similarity of its flatness, no distance characteristics and frontality and internal aspects such as symbolic expression and sacred images. But the most outstanding aspect is that icon and taenghwa were born with the incarnation of the holy trinity and holy Sakyamuni Buddha. It means that religious paintings are not just paintings but the paths to meet the transcendental being through its symbol to express the images.

動壓密공법을 이용한 都市 廢棄物 埋立地盤의 物理的 改良을 위한 方案

宋錫哲,李大澈,金英默 大田産業大學校 1994 한밭대학교 논문집 Vol.11 No.0201

In this paper, a application mehtod for physical improvement of municipal waste landfill is presented. It is called dynamic consolidation. To this end, a case of improvement project for construction site by dynamic consolidation to the waste landfill which was formed open dumping is studied. Field tests of project area is conducted, and the results of field tests is analised. From the results of the field measurements, the municipal waste landfill was compressed considerbily, and the geotechnical properties of the waste ground was improved. The pounder was penetrated below the ground level about 1.2~2.5m depth and the volume of the crater was 7.893~ 18.255m_3 when 1st step impect was finished. The coefficient of improvement depth α is 0.34~0.4. Thus, it was founded that the dynamic consolidation was sucessful for physical improvement of municipal waste landfill.

土留壁에서 뒷채움 흙의 密度特性에 따른 水平 主動土壓 및 파괴模樣 豫測

송석철,윤원섭 한밭대학교 산업과학기술연구소 1993 논문집 Vol.1 No.-

It is very important the magnitude and distribution of backfill earth pressure in retaining wall are estimated before desining a retaining wall. When the density of backfill consisted of sand is changed, the magnitude and distribution of horizontal active earth pressure due to the changes of inclined backfill and wall friction angle and the failure surface caused due to the deformation taken place by active earteh pressure are predicted by KEM(Kinematical Element method).

大田市 下水道計劃에 關한 硏究

宋錫哲,李鍾珏 大田工業高等專門學校 1968 論文集 Vol.3 No.-

This thesis is, as the first step in establishing the sewerage plan, the report of studying the problems and devices on the sewerage planning in future by means of investigating and analysing these streams, through which the filthy water flows. In Taejon stream, flowing through the center of the city, and Dae Dong stream which flows front the east of it, the centaminating of them is so extreme that I am going to present the following devices in a respect that we should consider a counter-measure of purifying these streams in order to prevent it. The problems and devices of a sewerage planning are like these: 1. To make the draining smooth by means of completing the sewerage systems in the whole city. 2. To eliminate the filthy water by establishing the intercepting sewer on stream street. 3. To set up a treatment division of industrial waste water. 4. To make designers replace the water carrage toilets with flush ones in constructing of them, when they received permission for building houses. 5. To protect the region of the downstream from the damage of filthy water, by establishing sewerage treatment plants. By carrying out the above mentioned five projects urgently, I think that we are able to obtain the cheerfulness and the sound sanitation of the city.

京釜高速電鐵의 大田驛舍立地와 運繫交通體系에 관한 硏究

宋錫哲,金明洙 大田産業大學校 1994 한밭대학교 논문집 Vol.11 No.0201

This study is to suggest an idea on the comfortable location of Taejon Station in the Kyong-bu Rapid Rail Transit. We know very well there were some problems such as traffic congestion, lack of master plans in the technical and economic side, and disadvantage of failing to play a role as the center of Taejon city in the now Taejon Station location. So, to solve these problems and also to make a plan to build connection traffic system connected with Taejon Station in the Kyong-bu Rapid Rail Transit, this study is to show up one suggestion. It is necessary that the budget, demand, and pursuit for profit in the construction of the Kyong-bu Rapid Rail Transit, be planned very carefully related with the prospect of city's development and city's traffic problem in the future. That is to say, to decide efficient Taejon Station location is to think over the future development of city, the main direction of city's development, and the appropriate utilization of limited space from the many-sided viewpoints.

SUMT 法에 의한 鐵筋콘크리트 아치構造의 最適設計에 關한 硏究

宋錫哲 大田工業大學 1990 한밭대학교 논문집 Vol.7 No.1

This study is to analyze the properties of concrete according to the shapes of aggregate. The result of the test was that the rounder the shape of aggregates was the more the value of slump was increased and compressive strength of concrete was increased also.

鐵筋콘크리트 部材斷面의 最適設計에 關한 硏究

宋錫哲 大田開放大學 1986 論文集 Vol.5 No.-

本 硏究는 鐵筋콘크리트 構造物의 最小經費設計를 위한 콘크리트 斷面의 最適化를 許容應 力設計法( W.S.D ) 및 極限强度設計法( U.S.D ) 의해 試圖한다. 目的函數는 構造物의 建物經費를 最小化하기 위한 經費函數로서 鐵筋콘크리트 및 거푸집 費用과 建物의 層高 增加에 따르는 追加 費用을 모두 內包하고 있다. 本 硏究에서는 非線形計劃 問題를 SUMT로 變換한 후 SUMT를 Modified Newton Raphson method을 利用하여 解析함으로서 鐵筋큰크리트 構造最適化를 試圖하였다. 本 硏究를 通하여 本 硏究에서 採擇한 알고리즘이 鐵筋콘크리트 構造物의 最適設計에 適合하다는 것을 알았다. This study is concerned with the optimum proportioning of reinforced concrete sections for the minimum cost design of reinforced concrete structures using working stress design theory. Cost objective function for the minimum cost design is obtained by considering the building height. The optimization of reinforced concrete structures is achieved by the transforming the nonlinear programing problem with constraints into SUMT, and solving SUMT utilizing the Modified Newton-Raphson method. It has been observed that algorithm adopted in this study may be recommended to achieve the minimum cost design of reinforced concrete structures.

洪水追迹法에 의한 河道變移豫測(Ⅱ)(適用)

이종석,李大澈,宋錫哲 大田産業大學校 1996 한밭대학교 논문집 Vol.13 No.0201

본 연구는 한강 상류에서 지속기간이 8시간인 강우에 대한 유출 수문곡선을 수위-유량 관계식으로부터 유도하여 최대 홍수량과 지하수 유출시의 유사이송에 따른 흐름특성과 하상변화를 비교 검토하였다. 수치모형은 침식성 하천에서의 흐름 및 유사량에 관한 기본 방정식을 검사체적 개념으로 유도하고, 그 지배 방정식을 유한 차분법에 의한 홍수추적을 통해 하도변이를 예측할 수 있도록 개발하였다. 그 결과 직선구간의 종점과 만곡구간의 시점이 교차하는 수로구간에서는 삼각형 단면형의 하상이 발달하는 것으로 나타났고, 수로구간의 중앙부 지점에서는 제형단면에 가까운 하상형상이 발달하는 것으로 나타났다. 이는 하상변화의 계산에서 수로 중심선을 기준으로 하는 이론적인 경우와 실제의 유체 흐름에 의한 유심선의 발달이 서로 다르기 때문인 것으로 확인되었다. 따라서 본 연구결과는 인공 및 자연하천의 미계측 하천에서 하도변이를 예측하는데 활용할 수 있을 뿐만 아니라 하도의 설계 보수에도 유용한 정보를 제공할 수 있을 것이다. This study was compared with the flow characteristics and the topographic variation by sediment transport for the maximum flood and the runoff for study reaches in the duration 8hrs precipitation at the upper area of Han River. And those were developed in order to evaluate for the topographic variation by the flood routing method derived from stage-discharge relationship in alluvial channels of the erodibility, and the basic equations in natural open channel induced from the control volume for the governing equations with the continuity and the momentum in water and sediment, and the solution for these equations worked out by the finite difference method in numerical analysis. As the result showed with topographic variation of the triangular section at an intersecting point of the end point in straight reaches and the start point in curved reaches, and showed trapezoidal at the middle point section. The reason identified that due to differ from between in the case of theoretic calculate for the channel center line and in the case of water flow for the thalwag center line in the criteria of flow and bed variation computations. Thus, the results can be used river channel alignment and repairment as well as prediction of the topographic variation in canal and natural river of unmeasured.

교통사고에 미치는 도로 기하구조의 특성분석

신봉호,엄재구,안영태,윤철규,송석철 충북대학교 건설기술연구소 1999 建設技術論文集 Vol.18 No.1

The purpose of this study is to analyze through linear regression model the road geometric characteristics to effect on traffic accidents. These model were used the linear regression and had been analyze to have statistical properties. The analysis on object is restriction on the 36th national road and the dependent variables are the death rates about traffic accidents. And independent variables are used traffic accident position, radius curve, vertical slope, and road characteristics. This study results, proposed according to separating characteristic condition of road confidence was TA=0.2003L+11.0006.