• Title/Summary/Keyword: 정문

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A Study of Permanent Form System by Thin Precast Concrete Panel (II) (박판 프리캐스트 콘크리트 영구거푸집 시스템 연구 (II))

  • 남기룡;정문영;정문열;서치호;김윤일
    • Proceedings of the Korea Concrete Institute Conference
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    • 1997.10a
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    • pp.749-754
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    • 1997

  • Nowadays domestic building market has undergone several changes. Labor costs are too high and materials are in short supply. These raised building costs and therefore lowered productivity. At this point it is the best way to reduce manual labor and find alternative materials that can improve productivity. In the building process form work take the most part of it. So many formwork systems were developed to reduce the construction period and labor cost. But their technical improvements just limited to adjust form shape-the role of form is not changed. This research developed a new formwork systems that can function to unify or minimze the unit process with cast-in-place type permanent form. In former study (reported in '97 spring seminar), we did the assembling test with column and beam clamps. Furthermore, In this paper, we examined the total systems of form erections and evaluated the structural performances.

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증기터빈의 성능향상 기술 동향

  • Jeong, Mun-Su
    • Journal of the KSME
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    • v.49 no.9
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    • pp.52-57
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    • 2009

  • 이 글에서는 차세대 증기터빈 개발에 대해서 먼저 소개하고 이에 따른 증기터빈의 고온 고압화, 긴 블레이드의 개발 그리고 이에 수반되는 내부효율 향상을 소개하고자 한다.

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