• Title/Summary/Keyword: Construction Period Reduction

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Structure and Construction Technology Analysis about Construction Sequence Change for Superstructure Construction Period Reduction in Top-down Method (역타공법 중심의 골조 공기단축을 위한 시공시퀀스 변경에 따른 구조해석 및 요소기술 분석)

  • Park, Yong-Hyeon;Ju, Young-Kyu
    • Journal of the Architectural Institute of Korea Structure & Construction
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    • v.35 no.6
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    • pp.101-109
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    • 2019
  • The purpose of this study is to improve a general Top-Down construction process for superstructure construction period reduction. In a general Top-Down construction sequence, the ground floor slab is set up first. Subsequently, 1st basement level construction including core walls is constructed. Initiation of the ground level superstructure gets waited until then. In this study, removable deck plate installation on the bottom of the core walls of ground level is preceding the concrete casting, therefore, ground level superstructure construction is able to get started earlier. Up to first typical floor concrete casting, total of seventy-two working(calendar) days will be resulted in a reduction from the total construction periods.

A Study on Field Application of Early Strength Concrete for Construction Work Period Reduction (조강콘크리트를 사용한 구조물의 공기단축 관련 현장적용에 관한 연구)

  • Kim, Min-Jeong;Kim, Dong-Jin;Lee, Sang-Ho
    • Proceedings of the Korea Concrete Institute Conference
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    • 2009.05a
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    • pp.155-156
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    • 2009
  • In this study, changes of work process, construction machinery, and construction cost caused by construction work period reduction using early strength concrete is considered for its field application.

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Application of the Seismic Response Reduction Technology for Boramae Deokyo Building Remodeling (보라매 대교빌딩 리모델링을 위한 지진응답 저감기술 적용사례)

  • Park, Young-Mi;Park, Ki-Hong;Jo, Seong-Joon
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2013.11a
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    • pp.134-136
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    • 2013
  • In general, the seismic retrofit is almost essential to extend and remodel aged buildings. Because domestic seismic design code has been enhanced, seismic performance should be secure for aged building remodeling. Seismic response reduction device (damper) is lately appling to ensure seismic performance. This device is economical efficiency method that can reduce the load to foundation and the range of structural reinforcements, shorten of construction period. New shaped steel damper was applied for extension and remodeling construction for Boramae Deakyo building. As a result, the economy and shortening of construction period was achieved.

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An Experimental Study on Reduction of Working Period of Concrete using High Early Strength Binder (조강형 결합재를 사용한 콘크리트의 공기단축에 관한 실험적 연구)

  • Kim, Dong-Jin;Kim, Min-Jeong;Lee, Sang-Ho
    • Proceedings of the Korea Concrete Institute Conference
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    • 2008.11a
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    • pp.513-516
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    • 2008
  • Recently, a demand for reduction of construction cost by reducing construction period is increasing because of the slump of the construction business, the increasing price of raw-materials and the enforcement of after-sale system. As a method of reducing construction period, many construction companies usually apply a method of reducing curing period. But if they use an existing early strength cement or admixture, they spend a heavy cost on materials and there are many problems, such as a heat of hydration and a loss of workability. The purpose of this research is a reduction of construction cost by reducing construction period as a earlier removal time of form. To check up application of concrete using high early strength binder and admixture, comparative tests were carried out with concrete using an existing early strength cement or admixture such as tests of diurnal variation, setting time and compressive strength.

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An Experimental Study on Strength Properties of Early Strength Concrete for Reduction of Working Period in Apartment (공동주택 공기단축을 위해 개발된 조강 콘크리트의 강도 발현 특성에 관한 연구)

  • Jung, Yang-Hee;Lee, Jae-Hyun;Keum, Kyoung-Hun;Lee, Won-AM;Kim, Sun-Man
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2009.11a
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    • pp.157-160
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    • 2009
  • The decision of the Form removal time which leads the early assuring strength of the concrete from Apartment construction is the fact which is important from Reducing the period of works and the economical efficiency side. Especially, with Complex building of recent times the same Tall building and Multiple Apartment Site which only follows in upgrade of interior construction of apartment site and shortening the frame construction period becomes very, importantly is the actual condition where the effort which is various for this is attempted. But is caused by with limit and economical efficiency problem of case concrete early strength revelation of most and is not put to practical use is the actual condition. Develops concrete mixture which is a utility from the research which sees hereupon and the effect which is economic leads construction duration shortening under maximizing boil.

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Evaluation of the Established Reduction Scheme in Implementation Plan of Total Maximum Daily Loads (수질오염총량관리 시행계획에서 수립된 삭감계획의 평가)

  • Park, Jae Hong
    • Journal of Korean Society on Water Environment
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    • v.24 no.3
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    • pp.297-305
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    • 2008
  • It is necessary to select proper reduction methods and to calculate reasonably reduction amount for making good practice of the reduction scheme. Moreover, it is suggested that the reduction amount have to be distributed properly during the planning period. In other words, it has not to be concentrated on the specific year (especially final year of the planning period). The reason why, if the reduction amount concentrate on the final year of the planning period, allotment loading amount could not be achieved in some cases (e.g., insufficiency of budget, extension of construction duration). Even though much of the budget have been supported from national treasury (about 50%), it is thought the role of the local government must be strengthened gradually.

Application of Tilt-Up Construction Method for Building Single-Family house (단독주택의 구조체 공사에 있어 Tilt-up 공법의 현장적용)

  • Jeon, Se Mi;KIm, Myeong Gil;An, Youn-soo;Sho, Kwang-Ho
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2015.05a
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    • pp.136-137
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    • 2015
  • Tilt-up construction is the method that the wall structures are fabricated horizontally on site and placed at specified location using heavy lifting equipment. Tilt-up method generally has several advantages, such as of productivity improvement, labor savings, shortened the construction period the and cost savings. In this study, Tilt-up method is used for wall construction of detached house. Result shores the substantial improvement on construction period. The use of Tilt-up method led construction period reduction of 20%.

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Development of RCB Exterior Wall Form for Duration Reduction (공사기간 단축을 위한 원자로 건물 외벽 거푸집 개발)

  • Cho, Yerim;Shin, Yoonseok;Ko, Young-Tae
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.19 no.1
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    • pp.587-595
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    • 2018
  • Countries that have been banned from building nuclear plants are becoming more tolerant in response to global warming and climate change. Thus, the construction of future nuclear plants will increase, and the competition will also intensify. A nuclear power plant has a long construction period compared with conventional construction projects. In order to gain a competitive advantage in nuclear power plant construction, the construction period must be decreased. Therefore, the purpose of this study is to develop an exterior wall form for a reactor containment building to reduce the construction time by increasing the height of the form. The structural safety, constructability, and economic feasibility were analyzed to assess the applicability of the proposed form. The proposed form was determined to be structurally safe. Furthermore, the construction period was shortened by reducing the duration of the construction units, and the total construction cost and interest were also reduced. Therefore, the proposed form could contribute to reducing the construction period for nuclear power plants.

Economic Analysis of Neighborhood Facility using the U-flanged Truss Hybrid Beam (U-플랜지 트러스 복합보를 사용한 근린생활시설의 경제성 분석)

  • Oh, Myoung Ho;Park, Sung Jin;Kim, Young Ho
    • Journal of Korean Association for Spatial Structures
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    • v.21 no.3
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    • pp.77-84
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    • 2021
  • In this study, In order to apply the U-flanged truss hybrid beam to the actual construction site, the structural design of the basic module of the middle and low-rise neighborhood living facilities was performed according to the Korea Design Standard, and the construction cost and construction period were compared with the traditional reinforced concrete structure system. As a result of analyzing the construction cost for the basic module, if the U-flanged truss hybrid beam and D-Deck slab system are used, the construction cost can be reduced by 86% compared to the traditional reinforced concrete structure system. In addition, as a result of analyzing the construction period for a floor area of 1,000m2, using the U-flanged truss hybrid beam and D-Deck slab system can save 2.0days in construction period compared to the traditional reinforced concrete structure system. Therefore, the U-flange truss hybrid beam can secure sufficient economic feasibility compared to the existing reinforced concrete method in terms of cost reduction and shortening of construction period.

건설현장 관리기사의 안전관리 효과에 대한 인식도

  • 고병인;임현교
    • Proceedings of the Korean Institute of Industrial Safety Conference
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    • 1998.05a
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    • pp.265-270
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    • 1998
  • As the goal of enterprises is to pursuit benefits, the goal of safety management is not only preventing accidents but also promoting benefits and productivity. However, enterprises have failed to realize the necessity of safety management, partly because they didn't grasp any appropriate evidences advocating effectiveness of safety management. This study aimed to survey construction-site engineers' consciousness on safety management contributing to cost reduction, construction period and quality enhancement. The result of this study showed that constriction-site engineers recognized the ratio of direct cost to Indirect cost as 1:2. The proportion of repliers who thought that safety management is contributable to cost reduction was 35%, to construction period was 20%, and to quality enhancement was 48%. The construction sites with excellent safety accomplisments also had good work and selling amounts.

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