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정지성(Jeong, Ji-Seong),유용신(Yu, Yong-Sin),윤호빈(Yoon, Ho-Bin),정인수(Jung, In-Su),이찬식(Lee, Chan-Sik) 대한건축학회 2012 大韓建築學會論文集 : 構造系 Vol.28 No.11
The number of apartment housing increased rapidly due to housing supply promotion policy carried out at the late 1980’s. The disputes over defect of apartment building and accrued lawsuits also increase due to the various causes including quality of apartment and they incurs the social and economic problem. Crack defect is the most popular type of defect for the reinforced concrete works. The defect repair cost for the reinforced concrete work occupies about 50% of them for whole works. Lawsuits without any negotiation and arbitration for the defect spread throughout the country as there is not any judgement standard for the defect. Minimizing disputes and lawsuits caused by defect of concrete crack, defect judgement standard should be established. To suggest the standard of tolerable crack defect, this study examined the related standards, legal judgement cases, judgement standard alternatives, and expert interviews, questionaire survey. As the result, the tolerable crack range for the structural safety and the durability as 0.3㎜~0.4㎜ and the watertightness tolerable crack width as 0.1㎜, and the appearance tolerable crack width as 0.2㎜ are suggested.
안정민,정인수,이찬식,Ahn, Jeong-Min,Jung, In-Su,Lee, Chan-Sik 한국건설관리학회 2011 한국건설관리학회 논문집 Vol.12 No.4
주택재개발사업에는 다수의 이해관계자들이 참여하기 때문에 사업기간 동안 분쟁의 발생은 필연적이라고 볼 수 있으며, 이들의 의견조율이 매우 중요하다. 본 논문은 주택재개발사업을 효율적으로 추진하기 위하여 조합이 직접적으로 참여하는 시행단계의 위험요인을 분석하였다. 주택재개발사업 시행단계에서 발생했던 분쟁사례와 관련 연구를 검토 및 분석하여 50개의 단계별 위험요인을 식별하였으며, 전문가 면담을 통하여 총 26개의 최종 위험요인을 선별하였다. 위험요인의 정량적인 분석을 위해 설문조사를 실시하여 AHP기법을 이용한 각 위험요인의 중요도를 산출하였으며, 각 단계의 중요도를 합산하여 최종 중요도와 우선순위를 나타내었다. 분석 결과 관리처분계획단계의 '관리처분계획의 부적정성'과 사업시행인가단계의 '사업시행계획의 부적정성'이 가장 중요한 요인으로 나타났다. 분석된 위험요인의 활용도를 높이기 위해, 사전에 위험요인을 인지하여 이를 예방할 수 있는 체크리스트를 제안하였다. 본 연구의 결과를 토대로 주택재개발사업의 시행단계 위험요인을 적극 관리한다면 사업을 더욱 효율적으로 추진할 수 있을 것으로 기대된다. As many stakeholders are taking part in the Housing Redevelopment Project, their opinion mediation is considering very important issues. Thus disputes on projects are inevitable due to complexity of interest. To effectively progress the project, this paper analyze the risk factors by phase in implementation phase that the association participates in person. We identify 50 of risk factors in implementation phase by reviewing and analyzing related studies and actual cases of disputes, then we present 26 of risk factors through experts interview. Also, we calculate weights of risk factors by using AHP for quantitatively analyzing them and present final weights and priorities of risk factors by summing weights of risk factors by phase. In results, it is found that 'the inappropriateness of the Management Disposal Plan' in management disposal plan phase and 'the inappropriateness of the Project Implementation Plan' are the most significant risk factors. To maximize the utilization of risk factors analyzed, we present the checklists that can be aware of these risks in advance and prevent these risks. Based on these findings, if risk factors in implementation phase are managed actively, the housing redevelopment project will be performed more effectively.
이동규,박제호,정인수,김태만,윤정현,Lee, Dong-Gyu,Park, Jae-Ho,Jung, In-Su,Kim, Tae-Man,Yoon, Jeong-Hyun 한국방사성폐기물학회 2011 방사성폐기물학회지 Vol.9 No.3
사용후핵연료 운반용기 표면온도가 $85^{\circ}C$를 초과할 경우, 대인용 보호막(Personnel Barrier) 또는 운반용 덮개(Transport Hood)를 설치하여 운반 중 운반용기 표면에 사람이 직접 접근할 수 없도록 하여야 한다. 운반용 덮개가 설치된 경우, 열적 안전성 평가의 한 가지 경우인 정상조건 열해석 시, 외부환경 경계조건(환경온도 및 외부복사온도)으로 적용하기 위해서 운반용 덮개 내부 열 환경 조건(내부 공기온도 및 운반용 덮개 표면온도)을 계산해야 한다. 따라서 본 연구에서는 운반용 덮개 내부 공기온도 및 표면온도를 계산하기 위한 해석적 방법 및 열전달 특성에 대한 분석을 수행하였고 CFD 해석 결과와 비교를 통해 타당성을 검증하였다. In case that the maximum temperature of any surface readily accessible during transport of a spent nuclear fuel (SNF) transport cask exceeds $85^{\circ}C$ in the absence of insolation under the ambient temperature of $38^{\circ}C$, personnel barriers or transport hood shall be used to prevent people from casual contact with the transport cask surface. Usually the air temperature within the hood and the hood surface temperature are calculated and further utilized as boundary conditions(free stream temperature and external radiation temperature) for thermal evaluation under normal conditions of transport. In this study, these temperatures are derived using the analytical method based on the heat transfer mechanism around the transport cask under transport hood assuming the thermal equilibrium. By comparing the analytical solutions with the results from the detailed calculations with CFD-computer-code FLUENT 12.1 it is verified that the analytical method is still efficient tool to estimate the temperatures and these temperatures can be further used as boundary conditions for thermal evaluation under normal conditions of transport.