백석 문학의 전체성에 대하여

최동호(Choi, Dong?ho) 한국비평문학회 2012 批評文學 Vol.- No.46

This paper aims to have a bird’s?eye view on Baek, Seok’s works who has reached the 100th anniversary and avoid the mistake of looking into the parts and not the whole. Paek, Seok was born at Jeong?ju, Pyeong?buk on July 1912 and lived a life of extreme ups and downs. He made his literary debut through annual spring literary contest of Chosun Daily newspaper on January 1930 when he was 19 and finished his publication of works with ‘Naruteo’(Ferry) on May 1962. After he went to a cooperative in Gwanpyong?ri, Samsoo?gun leaving the central literary circle on January 1959, he lived as a shepherd for more than 30 years of his later part of life. Having been brought into sudden prominence in the literary circle with his poem book Saseum(Deer) in 1936, Paek, Seok kept his literary reputation as a writer of juvenile stories by publishing fairy poem book Jipgene Ne Hyongje(Four Brothers of the Hermit Crabs, 1957) in the North Korea. However, he had to focus on children’s literature without the freedom of writing and he could not be reinstated to Pyongyang after he had received the ‘Red Letter’ in 1959. Referred as a genius poet, however, his life was ended tragically without beingable to write what he wanted to and criticized for his lack of loyalty and ‘vestige of bourgeois.’ Total unearthed poems of Paek, Seok are 148 including recent ones discovered by Song, Joon. More of his unearthed works will be included later. His proses are total 44 with the variety of novel, essay, review, political comment, translation, etc. He focused more on translation in the North Korea and they are 197 works of translated modern poems and 11 works of fairy poems. He translated 4 long novels including Silent Don 1, Silent Don 2 and 1 collected short novel and 2 short novels. Silent Don recently discovered with the help of professor Yoon, Hae?yeon is more than 1,000 pages and has an importance as the first direct translation fro Russian into Korean by Bake, Seok. More works of him will be unearthed as time goes on. However, with those newly unearthed works, the study on Baek, Seok’s literature has already reached a new phase. Now researchers have to include those works written in the North Korea. Unearthing the texts of important poets such as Baek, Seok is very meaningful for the study of modern Korean poetry. Considering the process of unearthing his works until now, more of his translated works will be found. However, his own creation has less possibility of being included in the list. Though there will be the difficulties such as the division of Korea into south and north, researchers should be able to get over them to continue the study of Baek, Seok.

일축압축을 받는 직교로 보강된 판의 좌굴강도

최동호,장동일,최항용,Choi, Dong Ho,Chang, Dong Il,Choi, Hang Yong 한국강구조학회 1998 韓國鋼構造學會 論文集 Vol.10 No.4

직교로 보강된 판은 효율적인 하중분배능력과 좌굴안정성 때문에 장대교량의 강상판으로 사용되고 있다. 본 연구에서는 일축압축을 받는 직교로 보강된 판의 좌굴강도를 해석적 방법으로 추정하였다. 판이론을 사용하여 전체좌굴 및 부분좌굴과 같은 여러 모드에서의 좌굴응력식을 유도하고, 좌굴강도에 대한 횡리브와 종리브의 강성과 개수 등의 효과를 보이기 위하여 매개변수해석을 수행하였다. 정량적인 해석을 통해 종리브와 횡리브의 강성과 간격의 영향을 보였다. Orthogonally stiffened steel plates are used for orthotropic steel decks of long-span bridges because of high degree of flexural and torsional resistances and good load-distribution behavior. An analytic study is presented for evaluating the buckling strength of orthogonally stiffened plates subjected to uniaxial compression. By using the plate theory, the buckling stress under overall and partial buckling modes, is derived. Parametric studies are performed to show the effects of the stiffness and the number of transverse and longitudinal ribs on the buckling strength. The results show quantitatively strong influence of stiffness and spacing of longitudinal and transverse ribs.

강바닥판 종리브와 횡리브 교차부의 피로거동에 대한 종리브내 다이아프램의 영향

최동호,최항용,최준혁,Choi, Dong Ho,Choi, Hang Yong,Choi, Jun Hyeok 한국강구조학회 2000 韓國鋼構造學會 論文集 Vol.12 No.3

본 연구에서는 강바닥판의 실물 대형시험체를 제작하여 정적시험 및 피로시험을 실시하였다. 정적 및 영향면 재하시험 결과를 통하여 다이아프램의 유무에 따른 강바닥판 슬릿부의 면내와 면외응력을 검토하였으며, 피로시험결과로부터는 강바닥판의 피로거동, 피로균열의 발생과 진전에 대한 연구를 수행하였다. 다이아프램이 설치된 상세는 설치되지 않은 상세에 비하여 지점조건에 상관없이, 종리브 횡리브 교착부의 종리브측으로는 약 50%의 응력경감효과가 있으나, 횡리브측 하단부에는 오히려 상당히 큰 응력을 야기함을 알 수 있었으며, 피로균열 진전해석결과로부터는 슬릿부의 노치에 의한 초기균열길이가 피로균열성장에 상당한 영향을 끼치고 있음을 알 수 있었다. 측정자료와 FEM 해석을 통하여 공칭응력과 핫스폿응력에 의한 피로강도를 추정한 결과, 다이아프램이 설치되지 않은 상세는 규정된 피로등급에서 안전한 것으로 판단되나 다이아프램이 설치된 상세는 피로등급이하의 거동을 보였다. This study investigates the mechanical behavior on trough rib to crossbeam joint in orthotropic steel plate decks, specially emphasizing on the effect of diaphragm inside trough rib on the fatigue behavior of slit by static and fatigue tests. In particular, the effects of diaphragm on in-plane stress and out-of-plane stress, stress concentration, propagation of fatigue cracks at the silt are studied. With the result of experiment and numerical analysis, we have estimated the fatigue strength using the nominal stress and hot-sport stress. The details with diaphragm have occurred about 50% stress reduction at trough rib part of trough rib to crossbeam joint than the detail without diaphragm, however, the lower parts of crossbeam have occurred much more stress. Initial crack size or slit have an considerable influence on the propagation of fatigue cracks due to V-notch. The fatigue strength category of the details without diaphragm has higher value than fatigue limit, whereas that of the details with diaphragm is estimated lower than fatigue limit.

제주지역 호텔의 에너지 소비실태에 관한 연구

최동호,고영훈,박효순,Choi Dong-Ho,Ko Young-Hoon,Park Hyo-Soon 대한기계설비건설협회 2001 기계설비 Vol.127 No.-

The study focused on the analysis of energy consumption of hotel in Jeju. For this study, we regionally investigated the energy consumption in Jeju and Seogwipo by questionnaires. Based on the fundamental data, we classified the energy consumption accordi

단자유도 시스템의 선형응답과 비탄성응답에 미치는 PSD함수의 영향

최동호,이상훈,김용식,고정훈,Choi,Dong-Ho,Lee,Sang-Hoon,Kim,Yong-Sik,Koh,Jung-Hoon 한국방재학회 2008 한국방재학회 학술발표대회논문집 Vol.2008 No.1

Acceleration time history (ATH) used in the seismic analysis should envelop a target power spectral density (PSD) function in addition to the design response spectrum in order to have sufficient energy at each frequency for the purpose of ensuring adequate load. Even though design regulations require the ATH used in seismic analysis to meet a target PSD function, the reason that ATHs meet to a target PSD function is not described. Thus, artificial ATHs for high PSD function and artificial ATHs for low PSD function are generated. And then elastic and inelastic single-degree-of-freedom (SDOF) systems are loaded with these artificial time histories as the earthquake load. As a result, linear response and inelastic response of SDOF systems are affected by PSD function.

충돌하중을 받는 U-채널 교량 측보의 구조적 안정성에 관한 연구

최동호,나호성,이광원,Choi,Dong-Ho,Na,Ho-Sung,Lee,Kwang-Won 한국방재학회 2008 한국방재학회 학술발표대회논문집 Vol.2008 No.1

U-Channel Bridge is effective bridge type, because its edge beam performs role of barrier and enables to reduce additional dead loads. Nevertheless, there is possibility of bridge collapse under impact load due to car crash. Also, edge beam must have ability to induce safe driving and prevent falling accidents. Therefore, this study carries out analysis of behavior of edge beam and slab and evaluation of structural stability under impact loads, based on Korean Highway Bridge Design Specifications and AASHTO LRFD Bridge Design Specification. According to analysis result, the maximum stress of edge beam and slab satisfies specification of allowable stress.

장대레일 궤도의 온도좌굴 거동에 미치는 열차하중의 영향

최동호,김호배,Choi, Dong Ho,Kim, Ho Bae 한국강구조학회 2000 韓國鋼構造學會 論文集 Vol.12 No.6

The present study investigates the influences of vehicle induced loads on the thermal buckling behavior of straight and curved continuous welded rail (CWR) tracks. Quasi-static loads model is assumed to determine the uplift region, which occurs due to the vertical track deflection induced by wheel loads of vehicle. The lateral loads of vehicle induced by weight, the speed, the superelevation and curvature of track, and other dynamic vehicle track interaction, are included in the ratio of lateral to vertical vehicle load. Parametric numerical analyses are perfomed to calculate the upper and lower critical buckling temperatures of CWR tracks, and the comparison between the results of this work and the previous results without vehicle is also included. 본 연구에서는 궤도의 좌굴해석 및 그 결과를 통해 열차하중이 직선 및 곡선 장대레일 궤도의 온도좌굴 거동에 미치는 영향에 대해 평가하였다. 차량을 고려한 온도좌굴 해석은 바퀴하중하에서 장대레일 궤도의 수직 처짐에 기인한 상향처짐을 결정하기 위해 유사정적 하중모델을 가정하였으며, 차량의 무게와 속도, 궤도의 곡률, 캔트, 그외의 열차와 궤도의 동적인 상호작용으로 인한 횡방향하중은 열차의 수직하중에 대한 수평하중 비에 포함하여 수행하였다. 수치적 해석을 통해 장대레일의 상부 및 하부좌굴온도를 구하였고, 이런 해석결과들을 기존의 열차하중을 포함하지 않은 정적 좌굴해석결과들과 비교하였다.

다경간 현수교 주탑 설계를 위한 등가 현수교 모델

최동호,나호성,이지엽,권순길,Choi, Dong-Ho,Na, Ho-Sung,Yi, Ji-Yop,Gwon, Sun-Gil 한국강구조학회 2011 韓國鋼構造學會 論文集 Vol.23 No.6

다경간 현수교란 3개 이상의 주탑을 가지는 현수교로 중앙부에 주 경간을 2개 이상 가지는 현수교이다. 다경간 현수교 설계시 중앙주탑과 측주탑의 적절한 강성비를 가지도록 설계하는 것이 경제성이나 구조적인 효율성 측면에서 중요하다. 본 연구는 다경간 현수교의 중앙주탑과 측주탑의 적절한 강성비를 찾기 위해 다경간 현수교의 거동을 용이하게 파악할 수 있는 간편한 방법을 제안하는 것을 목적으로 하고 있다. 그 방법으로 다경간 현수교의 주케이블을 등가의 케이블 스프링으로 이상화하고, 주케이블에 작용하는 장력을 주탑상단에 수평력과 수직력의 외력으로 치환시키는 방법으로 다경간 현수교를 등가 다경간 현수교 모델로 치환하였다. 등가 다경간 현수교 모델에 대한 평형방정식을 유도하고 비선형해석을 통해 방정식의 해를 구하였다. 중앙지간장 3,000m의 4경간 현수교의 FEM 해석을 통해 각 주탑에서 발생하는 변위와 모멘트 반력을 계산하고, 이 결과를 등가 4경간 현수교 모델의 해석결과와 비교하여 본 연구의 연구결과를 검증하였다. 검증 결과, 본 연구의 제안방법은 FEM 해석결과와 비슷한 경향을 나타내었다. The multi-span suspension bridge generally has more than three towers and two main spans. To economically and effectively design a multi-span suspension bridge, the proper stiffness ratio of the center tower to the side tower must be determined. This study was conducted to propose a method of figuring out briefly the structural behavior of the towers in a multi-span suspension bridge. In the equivalent suspension bridge model, the main cable of the multi-span suspension bridge is idealized as an equivalent cable spring, and the external loads of horizontal and vertical forces that were calculated using the tensile forces of the main cable were applied on top of the towers. The equilibrium equations of the equivalent multi-span suspension bridge model were derived and the equations were solved via nonlinear analysis. To verify the proposed method, a sample four-span suspension bridge with a main span length of 3,000 m was analyzed using thefinite element method. The displacements and moment reactions of each tower in the proposed method were compared with the FEM analysis results. Consequently, the results of the analysis of the equivalent suspension bridge model tended to be consistent with the results of the FEM analysis.

시론: '선의 집'과 "악의 꽃"

최동호,Choi, Dong-Ho 대한건축사협회 2011 建築士 Vol.2011 No.5

100작품 - 개념의 건축화된 4카테고리 스케치 (우주.내용과 형식. 미메시스. 별자리)

최동호,Choi, Dong-Ho 대한건축사협회 2012 建築士 Vol.2012 No.2