• 대한안전경영과학회지
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• 제18권3호
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• pp.71-80
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• 2016

This study is on safety improvement measures through analysis of accident cases during plant storage tank construction. Storage tank is a general term for artificial ground facility constructed to store oil, water, gas, and other chemicals. Some companies have clustered storage tanks (tank farm). The construction methods vary according to the component and types of fluids. Because most of the construction procedures include lifting heavy weight materials using heavy construction equipment and are carried out at high places, storage tank construction contains more risk factors than normal aerial construction. Recently, major accidents such as storage tank collapse have occurred often, and cost many lives due to the characteristics of the structure. In this study we would like to analyze the cause of these accidents and propose measures to improve safety.

• 한국전산유체공학회:학술대회논문집
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• 한국전산유체공학회 2003년도 The Fifth Asian Computational Fluid Dynamics Conference
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• pp.225-226
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• 2003

• 한국농촌건축학회논문집
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• 제13권4호
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• pp.99-106
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• 2011

Since 1982, schools have been closed down by urbanization in rural areas. 3,386 schools had been closed down by March 2010. The average 300 schools was closed down every year. 55.7% closed schools were sold, 14.5% closed schools were rented. 6.3% closed schools have been utilized as education facilities. First, the closed school should be utilized as education facilities. And it should be utilized as public facilities as well as welfare facilities for local residents. This paper presents a case of the welfare facility remodeled using Don-Yi middle school in Okcheon-Gun, Chungcheongbuk-Do and propose the unit care composition. The main contents is composed of posts, beams floors, stairs. Masonry infill walls and windows ware improved. Corridors were placed. A classroom were divided into 2 rooms with the Korean traditional heating system(on-dol) for four. Other conveniences were designed for a cafeteria, recreation, a restroom as space required. It is effective to utilize the closed school that has magnificent views and orientation, space construction. The Unit-care system is proposed by 4 types developments.

• 교육시설 논문지
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• 제22권1호
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• pp.3-12
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• 2015

The user participatory design process collects users' opinions efficiently through a feedback process such as various user workshops and conferences. When users who actually participated in a design process use the facility in which they were a participant, their satisfaction with the design quality of the facility they use may be enhanced; therefore, user participatory design methods in school construction are deemed to enlarge consistently the interest in a school of students, parents, teachers, and local residents. This paper selected the most appropriate user participatory design methods through an analysis of actually applied cases, and applied them to the empirical exploration process. Also, problems incurred through the empirical exploration process were solved by various user participatory design methods based on actually experienced cases and the results of workshops performed. As such, this paper deduced problems by applying user participatory design methods in practice, and solved problems by executing the empirical exploration process again. Through this, the paper proposed a variety of user participatory design methods for improving school design and raising user satisfaction.

• 국제학술발표논문집
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• The 5th International Conference on Construction Engineering and Project Management
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• pp.616-623
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• 2013

One of the oldest, most common engineering problems is measuring the dimensions of different objects and the distances between locations. In AEC/FM, related uses vary from large-scale applications such as measuring distances between cities to small-scale applications such as measuring the depth of a crack or the width of a welded joint. Within the last few years, advances in applying new technologies have prompted the development of new measuring devices such as ultrasound and laser-based measurers. Because of wide varieties in type, associated costs, and levels of accuracy, the selection of an optimal measuring technology is challenging for construction engineers and facility managers. To tackle this issue, we present an overview of various measuring technologies adopted by experts in the area of AEC/FM. As the next step, to evaluate the performance of these technologies, we select one indoor and one outdoor case and measure several dimensions using six categories of technologies: tapes, total stations, laser measurers, ultrasound devices, laser scanners, and image-based technologies. Then we evaluate the results according to various metrics such as accuracy, ease of use, operation time, associated costs, compare these results, and recommend optimal technologies for specific applications. The results also revealed that in most applications, computer vision-based technologies outperform traditional devices in terms of ease of use, associated costs, and accuracy.

• 한국건축시공학회지
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• 제22권1호
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• pp.1-10
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• 2022

최근 이상 기후에 의한 국지성 집중호우, 폭염 등의 빈번한 발생으로 통합적인 빗물관리 시스템의 도입이 필요하다. 따라서, 빗물침투와 저류를 동시에 구현함으로써 집중강우에 대한 홍수방지 뿐 아니라, 빗물침투를 통한 지하수위를 확보할 수 있는 경제적이며 친환경적인 빗물침투저류시설의 개발이 요구되고 있다. 본 연구에서는 황토를 포함한 친환경 무기질 결합재를 이용하여 만들어진 친환경 빗물침투저류시설의 구조적 안전성에 대해 검토했다. 상시하중과 부가적인 수직하중을 고려한 정적해석과 지진 스펙트럼을 고려한 동적해석을 수행했다. 그 결과, 본 연구에서 개발한 친환경 조립식 빗물 침투형 저류시설은 기존의 PE 블록 빗물저류시설과 비교하여 동일 하중조건 및 지진조건 하에서 발생되는 최대응력은 약 68.1% ~ 75.4%, 최대변위는 약 0.9% ~ 9.6% 수준으로서 우수한 구조적 안정성을 확보하는 것을 확인할 수 있었다.

• 플랜트 저널
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• 제5권4호
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• pp.73-79
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• 2009

Increase of consumption in limited coal reserves leads prices surging. As a result, iron works which produce products with coal are in difficulties. Accordingly, it is required a lot of research of using non-caking coal that is relatively low cost and has abundant reserves. Direct drying and indirect drying are two major methods of drying the coal. Recently, to minimize the needed calories and to save energy, using fluidbed or fluidizing method is a recent main trend of minimizing the size of the facility and maximizing energy efficiency. However there is also disadvantage such as increasing facility investment because of installing additional facilities in the latter part. In this study, we will have theoretical researches on the indirect drying method with heat exchange system which have been traditionally used. As a result it is expected to increase the efficiency of the facility operation.

• 교육녹색환경연구
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• 제22권1호
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• pp.13-27
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• 2023

본 연구는 학교공사의 공사기간을 산정할 때 공사 목적물의 품질 및 공사의 안전성과 경제성을 확보하며 공사의 규모와 학사의 일정, 지역여건(민원발생) 등을 고려한 해당 지역 또는 교육청에 최적화된 공사유형별 적정 공사기간 산정을 위해 A교육청의 학교시설 환경개선 공사사례를 바탕으로 공사기간 연장 사유 등의 사례를 분석하였다. 공사기간 사례 분석을 위해 A교육청 관할의 학교공사 분석 기상자료개방포털 자료 분석, 2단계 통계분석을 종합적으로 검토하여 학교시설 적정공사기간을 산정하는 것으로 설정하였다. 향후 학교시설 적정공사기간 산정을 다양한 사례 분석을 통해 합리적이고 체계적인 방법으로 산정하여 공사기간을 설정하는 것이 필요하다.

• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.781-787
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• 2009

Training and process analysis in the construction industry has not taken full advantage of new technologies such as building information modeling(BIM). The purpose of this research is to develop a framework for the virtual interactive construction education system using three dimensional technologies. The modules will simulate the construction process for a facility from start to finish using information drawn from real projects in the built environment. These modules can be used as training tools for new employees where they attempt to optimize time and cost in a virtual environment given a limited number of equipment, time and employee options. They can also be used as a process analysis tool for new construction where a number of situational variables can change leading to exposure of potential risk. These modules would be particularly useful for repetitive construction where the initial project is analyzed for optimization and risk mitigation. This paper describes the framework and shows a residential construction example using a 900 square foot wood frame single family house designed for the United States.

• 한국지열·수열에너지학회논문집
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• 제7권1호
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• pp.17-22
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• 2011

Renewable energy is growing based on low-carbon green energy government policies. According to this policy, geothermal energy is highly efficient and environmental friendly energy which is being recently expanded. However, construction companies are generated disorderly but their ability has not been verified due to the poor geothermal facility which was reported in the media. In the this paper introduce on Busan region's largest geothermal facility, it was confirmed that thermal efficiency of the underground is close to heat exchanger performance. Therefore the study improving the efficiency of underground heat exchange found progressed. The results showed voids between borehole and ground heat exchanger should not be raised. And then geothermal facilities were installed very successfully through the principle grouting operation. As compared to the energy consumption on the basis of operating results energy usage was less than any other heat sources.