통합 검색 | Korea Science

한국상하수도협회
- 한국상하수도협회지
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- 통권27호
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- pp.18-19
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- 2009
기술력에 대한 신뢰를 바탕으로 가장 효율적이고 경제적인 솔루션을 찾아내는 것' 현대엔지니어링이 말하는 엔지니어링에 대한 생각이다. 거대한 비즈니스 신대륙을 발견하기 위해 보낸 지난 35년 간의 시간, 그것이 현대엔지니어링의 미래이다.
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오상진;채명훈;이현;이영환;정은경;이현식
- 플랜트 저널
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- 제16권4호
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- pp.33-39
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- 2020
For several decades, productivity in construction industry has been regressed and it is inevitable to improve productivity for major EPC players. One of challenges to achieve this goal is automatically extracting information from imaged drawings. Although computer vision technique has been advanced rapidly, it is still a problem to detect pipe lines in a drawing. Earlier works for line detection have problems that detected line elements be broken into small pieces and accuracy of detection is not enough for engineers. Thus, we adopted Contour and Hough Transform algorithm and reinforced these to improve detection results. First, Contour algorithm is used with Ramer Douglas Peucker algorithm(RDP). Weakness of contour algorithm is that some blank spaces are occasionally found in the middle of lines and RDP covers them around 17%. Second, HEC Hough Transform algorithm, we propose on this paper, is improved version of Hough Transform. It adopted iteration of Hough Transform and merged detected lines by conventional Hough Transform based on Euclidean Distance. As a result, performance of Our proposed method improved by 30% than previous.
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권해원;공민호;이창용;정갑철
- 한국건축시공학회:학술대회논문집
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- 한국건축시공학회 2020년도 봄 학술논문 발표대회
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- pp.54-55
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- 2020
Recently, "The rules on the standards of evacuation and fire protection of buildings" require that non-burnable materials such as non-combustible and semi-non-combustible materials be used as the materials applied to the building's exterior walls, but styrofoam, which is a combustible material, has been applied a lot and became a social issue. In this study, we developed a non-combustible outer wall molding to secure construction and economic feasibility and free expression using CLC(CLC: Cellular Light-weight Concrete).
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백영운;육태원;박동수;김한솔;이한승
- 한국건축시공학회:학술대회논문집
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- 한국건축시공학회 2023년도 가을학술발표대회논문집
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- pp.41-42
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- 2023
The physical performance of high-strength concrete deteriorates when exposed to high temperatures such as fire. In particular, in the case of ultra-high-strength concrete, there is a high possibility of explosion due to internal water pressure and thermal expansion due to the tight internal structure. In this paper, a fire resistance certification test was conducted for field application of ultra-high-strength fire-resistant concrete, and the fire resistance performance (temperature rise of main rebar) was compared according to the structural concrete cover thickness. As a result, when the covering thickness was 40 mm, three structures did not meet the certification standards, and when the covering thickness was 50 mm, all structures met the fire resistance certification standards.
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장종민;백영운;육태원;박동수;이한승
- 한국건축시공학회:학술대회논문집
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- 한국건축시공학회 2023년도 봄 학술논문 발표대회
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- pp.177-178
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- 2023
In this study, the mass production process was simulated using a 1m³ batcher plant to evaluate the application of high-strength fire resistance concrete. The strength ranges of concrete were set to 50, 60, 70, and 80 MPa, and each concrete mix proportions was selected through preliminary experiments in the laboratory. For the selected concrete mix proportions, after the mixer load value was stabilized in the batcher plant, the slump flow and air content of the fresh concrete were evaluated, and the compressive strength was evaluated up to 56 days. As a result of the experiment, both the slump flow and air content of the fresh concrete satisfied the target performance, and in the case of compressive strength, 50 and 60 MPa satisfied the target performance at 28 days and 70 and 80 MPa at 56 days.
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