• 제목/요약/키워드: Constructibility

검색결과 52건 처리시간 0.024초

광양지역 지하수위 변화를 고려한 시공성에 관한 연구 (Study on Constructibility considering Changes of Groundwater Level in Kwang Yang port)

  • 김병호;양태선;이송
    • 한국지반공학회:학술대회논문집
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    • 한국지반공학회 2006년도 춘계 학술발표회 논문집
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    • pp.1120-1125
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    • 2006
  • Larger area will be constructed in a harbor land and container terminal which are constructed in reclaimed land using the dredged materials. Soil improvement work is to be carried out including constructibility, in which is monitoring devices, measuring frequency, installations etc. The ground water tables in the reclaimed area are affected by the several factors which are design reclamation level, consolidation settlement, remaining surcharge pressure and remaining excess pore water pressure. The plan wii be drawn up in which monitoring results for the ground water tables are capable to provide the reliable ground water table when designers and civil engineers construct the harbor structures considering constructibility.

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삼차방정식 해의 작도(불)가능성에 대한 학습 자료 개발 (Development of Learning Materials on Constructibility of Roots of Cubic Polynomials)

  • 신현용;한인기
    • 한국수학교육학회지시리즈E:수학교육논문집
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    • 제30권4호
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    • pp.469-497
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    • 2016
  • 본 연구에서는 추상대수학의 체, 벡터공간, 최소다항식 등의 개념을 중심으로 삼차방정식 해의 작도(불)가능성을 학습할 수 있는 학습 자료와 초등수학적 접근을 구현한 학습 자료를 각각 개발하였다. 그리고 개발된 자료들에 대해 타당성, 학습 가능성, 장점 및 단점을 실험적으로 확인하였다. 본 연구에서 개발된 자료들은 중등학교의 수학 우수학생들, 수학을 배우는 대학생들, 수학교사들에게 유익할 것으로 기대되며, 3대 작도불능문제의 해결, 다양한 3차방정식의 해의 작도(불)가능성을 학습하는데 활용될 수 있을 것으로 기대된다.

건축물 시공 자동화 시스템을 위한 자립형 철골 접합부의 시공성 분석 (Constructibility Analysis of Self-supported Steel Joint for Automated Construction System)

  • 김동건;양성우;김태훈;신윤석;조훈희;강경인
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2009년도 춘계 학술논문 발표대회 학계
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    • pp.1-4
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    • 2009
  • Construction automation and robotics are being introduced as an efficient alternative to overcome troubles caused by lack of skilled labors. To accomplish effective automated construction system, design for automation(DFA) should be performed in parallel with the development of core technologies such as control and sensing of robots. In Korea, the development of robotic crane-based construction automation(RCA) system is progressing, and the research group has recently developed newly designed steel joint to improve the efficiency of the system. However, performance of the new system should be examined prior to its application on construction sites. Therefore, This study analyzed performance of the new steel frame focused on its constructibility by carrying out mock-up test. As a result, the steel frame satisfied the standards of allowable stress and deflection. It also enables to reduce the time for installation.

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수평하중에 대한 목조프레임의 결구공법에 대한 연구 - 봉정사(鳳停寺) 극락전(極樂殿)을 대상으로 - (Constructibility Characteristice of Wood Frames of Lateral Cyclic Load - Geungnakjeon Hall of Bongjeongsa Temple -)

  • 이호;이택운
    • 한국산업융합학회 논문집
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    • 제10권4호
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    • pp.255-262
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    • 2007
  • The main purpose of this study is to figure out of seismic structural behaviour of Gukrakjeon of Bongjung-Temple which is the oldest wooden architecture in Korea, and to evaluate in engineering aspect of seismic records. The non-lineal analysis is essential for accurate evaluation of wooden architecture in seismic behaviour. Based on the experimental test with applying cycle forces in joint specimens is focusing on not only to prove the structural characteristics, but also to evaluate damping ratio, As the result of this test, damping ratio is affected not the joint methods but the frame variations. The average damping ratio was 26%.

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설문조사를 통한 장수명주택의 경량벽체 시공성 사후평가 (Post Evaluation on the Constructibility of the Lightweight Wall in Long Life Housing through Interview Survey)

  • 이학주
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2014년도 춘계 학술논문 발표대회
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    • pp.188-189
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    • 2014
  • Recently, structural system of apartment building is changing from wall type to column type to accommodate various life styles of residents in Korea. Reinforced-concrete bearing wall structures have been mainly used in apartment construction since 1980's. It is impossible to remove the bearing wall in case of remodeling a house, so that the lightweight wall is needed to apply to the column type structure of the Long Life Housing. Therefore, the purpose of this study is to evaluate the construction performance of the wall. Constructibility reviews are performed throughout interview survey from builders who charge with managing the construction of the lightweight wall in field. This paper present that constructor prefer the bearing wall rather than the lightweight wall because of the schedule delay, difficulty of management, and lack of skilled labor. The results indicate what we should improve on the lightweight wall from now on.

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무소음.무진동 스크류 PHC 말뚝공법에 관한 기술적 수준 고찰 (A State of the Art on a Noise & Vibration - Free PHC Screw Pile Method)

  • 하영민;정호영;김영필;김성수;최용규
    • 한국지반공학회:학술대회논문집
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    • 한국지반공학회 2009년도 춘계 학술발표회
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    • pp.496-506
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    • 2009
  • Various the low noise & vibration pile methods were developed and used in many construction sites. Low noise & vibration pile methods must be used essentially from the sites where popular complints would be expected. In this paper, low noise & vibration pile methods and screw pile methods were investigated, noise & vibration-free screw PHC pile method, also, was studied and its constructibility and applicability were analyzed.

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시멘트계 모르타르 매트릭스를 활용한 섬유복합재료 ECC(Engineered Cementitious Composite)의 설계와 시공 성능 (Design and Constructibility of an Engineered Cementitious Composite Produced with Cement-based Mortar Matrix and Synthetic Fibers)

  • 김윤용
    • Composites Research
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    • 제20권2호
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    • pp.21-26
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    • 2007
  • 이 논문은 합성섬유를 이용하여 포틀랜드 시멘트 모르타르를 보강한 복합재료인 ECC(Engineered Cementitious Composite)의 설계 과정과 건설현장에 이 복합재료를 적용할 수 있도록 시공성을 부여한 연구 내용을 정리하였다. 이 연구에서는 다양한 시공성, 즉 자기충전(self·consolidating)과 스프레이 시공성을 갖는 ECC를 제작하기 위하여 단계적인 재료 개발 방법론을 채택하였다. 우선 마이크로역학(micromechanics)과 안정상태균열이론(steady-state cracking theory)을 이용하여 골재와 섬유를 선정한 후, 굳기 전 재료의 레올로지를 제어하는 방법으로 시공성을 구현하였다. 여기서, 굳기 전 재료의 레올로지를 제어하기 위하여 화학첨가제(chemical admixtures)와 광물첨가재(mineral admixtures)의 양을 소량으로 조절하는 방법을 사용하였다. 이러한 방법을 활용함으로써 굳기 전에는 다양한 시공성을 나타내면서, 굳은 후에는 높은 연성(인장변형경화 거동)을 나타내는 실용적인 ECC 복합재료를 개발하였다.

고강도 강관버팀보 현장적용 및 경제성 평가 (Evaluation of Cost-Effectiveness on High-Strength Steel Pipe Strut and Its Application)

  • 나승민;이종구;이용주
    • 한국지반공학회:학술대회논문집
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    • 한국지반공학회 2008년도 춘계 학술발표회 초청강연 및 논문집
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    • pp.511-520
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    • 2008
  • The steel pipe strut for a means of the retaining structure has been used generally in North America, Europe and China so far. However, Korea and Japan, two countries are much familiar with H-shape steel strut having its anisotropic strength on two different axes(named as strong and weak axes), even though they recognize the steel pipe's excellence of structural function associated with its compressive ability. This trend is mainly due to a number of its field application, accumulated know-hows and workmanship etc. This paper introduces particular features of a high-strength steel pipe strut in comparison with the H-shape steel strut and its application for two excavation sites in Seoul. As a result of field verification, the high-strength pipe steel strut is more effective than the H-shape steel strut in terms of construction costs, schedules, constructibility and structural stability.

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