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사질토지반에 설치된 소일네일 복합형 IER의 수평변위 억제효과에 관한 연구
박태건,임종철,유재원,김창영,강상균,이우제,Park, Tae-Keon,Im, Jong-Chul,Yoo, Jae-Won,Kim, Chang-Young,Kang, Sang-Kyun,Lee, Woo-Je 한국지반공학회 2017 한국지반공학회논문집 Vol.33 No.10
지주식 흙막이 공법(Inclined Earth Retaining Wall; 이하 IER)은 지반 조건과 상재하중 등의 영향에 따라 다르지만 일반적으로 6.0~7.0m의 굴착 심도에서 자립이 가능하다. 하지만 더 깊은 심도의 굴착과 이에 따른 안정성을 확보하기 위해서 다른 공법과 병행하여 적용 할 필요가 있다. 따라서 본 연구에서는 IER에 소일네일링 공법을 적용한 복합형 IER의 안정성을 확인하고 효율적인 설치방법을 제안하고자 실내모형실험과 3차원 유한요소해석을 실시하였다. 실내 모형실험 결과 소일네일을 설치하였을 때가 설치하지 않았을 때와 비교하여 수평변위가 약 92% 감소하는 것으로 분석되었고, 3차원 유한요소해석 결과 소일네일 간격은 수평방향${\times}$수직방향 간격이 $1.5m{\times}0.75m$이고, 길이는 굴착 심도의 86%일 때 경제성과 안정성이 최적인 결과가 나타나는 것으로 분석되었다. 또한, IER의 변위가 크게 증가하는 굴착 심도 이전의 굴착 단계에 소일네일을 설치하였을 때 최대 1.71배 더 굴착이 가능한 것으로 분석되었다. A self-supported temporary excavation method called IER is normally applicable to excavation depth ranging from 6.0 m to 7.0 m though the method depends on ground condition and overburden load. Combining IER with another method is required in deeper excavation depth in order to maintain the structural stability of the IER. In this study, we performed model tests and 3D FE analysis to check the stability of the IER adopting soil nailing method, and to propose its effective installation method. The lateral displacement of the IER using soil nailing decreased by 92% of that of IER without soil nailing. Optimum design is possible for both economic feasibility and stability when interval spacing and length of soil nails is $1.5m(S_h){\times}0.75m(S_v)$ and 86% of excavation depth, respectively. Excavation depth using IER increases 1.71 times by adopting soil nailing in increment of lateral displacement of IER right before the last excavation stage.
박태건(Park Taegun) 한국언어문학회 2008 한국언어문학 Vol.65 No.-
The purpose of this article is to investigate the meaning of ‘animal consciousness’ in the Shin Suk-Jung"s poetry. Nature is the best value in the utopia poetics. Animal is the member of utopia with human. Therefore, the change of consciousness for animal is seem to be antagonism with period. The theme is "Flying image" in the first and last poetry and "Animal image" in the second and third poetry. Utopia is the common point in the first and last poetry. ‘Bird’ is existence the symbol of Utopia. Especially, it is very interesting ‘a crow’ has a positive meaning in the early days but a negative meaning in the latter days. ‘Animal’ is the main theme of the second and third poetry. It was the rapid changes of society this period from Japanese colonization to 4.19 revolution. It is noticeable the meaning of animal have ‘Cute’ in the early days, more and more getting the meaning of ‘blind beast’ in the latter days. Shin Suk-Jung makes a progress ‘a world of actual feeling’ break from ‘a world of looking’. From thin point of view, ‘animal consciousness’ is seem to be appeared the change of self-conscious in Shin Suk-Jung poetry.
박태건(Tae-Geon Park),류지수(Ji-Su Ryu),이기상(Kee-Sang Lee) 전력전자학회 2002 전력전자학술대회 논문집 Vol.- No.-
In many high performance engineering systems such as automated production system and transportation systems, AC-servo drives are employed as the most Important driving parts And the faults of servo drives result In overall system performance deterioration or an unscheduled shutdown In cntical situations The real-time fault detection and isolation(FDO scheme is very useful to prevent them and to guarantee the desired reliability of the overall system. In this paper, the FDI schemes which can be applied to AC servo drives are Introduced and some new results are presented
박태건 ( Tae Geon Park ),반전호이 ( Kohji Iida ),김욱성 ( Wook Sung Kim ),김성기 ( Sung Ki Kim ),김석재 ( Seok Jae Kim ),류경진 ( Kyong Jin Ryu ),이유원 ( Yoo Won Lee ) 한국수산해양기술학회 2015 수산해양기술연구 Vol.51 No.2
Hundreds of Steller sea lions, Eumetopias jubatus, migrate from Sakhalin and the northern Kuril Islands to Hokkaido in Japan every winter. During this migration, they may use their roaring sounds to navigate and to maintain their groups. We recorded the roars of wild Steller sea lions that had landed on reefs on the west coast of Hokkaido, and those of captive sea lions, while making video recordings. The fundamental frequency (F0), Formant frequency (F1), pulse repetition rate (PRR), and duration of syllables (T) were analyzed using a sonagraph. F0, F1, and PRR of the roars emitted by captive sea lions increased in the order male, female. By contrast, the F1 of wild males was lower than that of females, while the F0 and PRR of wild males and females did not differ statistically. These results suggest regional differences between the five groups showed that.
박태건 ( Tae-geon Park ),김석재 ( Seok-jae Kim ),추영수 ( Yeong-su Chu ),박태선 ( Tae-sun Kim ),류경진 ( Kyung-jin Ryu ),이유원 ( Yoo-won Lee ) 한국어업기술학회 2018 수산해양기술연구 Vol.54 No.2
Marine casualties of small fishing vessels (SFV) of less than 20 tons are frequent in Korea. The analysis was conducted to identify the cause and then prepared reduction plan using the marine casualty statistics of fishing vessels for the last five years from 2012 to 2016 by the Korean Maritime Safety Tribunal to reduce the marine casualties of SFV. According to the analysis of the type of whole vessels occurring marine casualty, fishing vessels accounted for an average 68.0 %; moreover, except for 2014 when M/V SEWOL ferry capsizing occurred, the rate of death and missing due to marine casualties occurred from 68.3 % to 91.2 % in fishing vessels, and an average 79.5 % was found to be urgent need of a measure. Marine casualties occurrence depending on the gross tonnage of fishing vessel was found that the most occurred at less than 5 tons, followed by the order of 5 to 10 tons or less. However, crews who boarded on SFV do not have any training program for them, except for the fishing safety training of fisher who carry out fishing for shipowners and crew of the coastal and offshore fishing vessel in accordance with the safety regulations for fishing vessels in the Fisheries Cooperative Association. Therefore, it is necessary to revise the training program so as to improve the preventive action and then emergency response including the fishing safety compliance with each fishery, safe navigation, machinery inspection and emergency response. Also, an SFV of less than 5 tons of 56,000 vessels is boarded by unqualified fishers. It would also be possible to consider subdividing small boat operator’s certificate to enhance their qualifications. It is expected that marine casualties of SFV will be reduced if active efforts are made to improve the safety consciousness of fisher and shipowners as well as the reorganization of fishing safety training and the small boat operator’s certificate system.