• Title, Summary, Keyword: 시공 생산성

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Analysis of Constructability Factors Affecting on the Productivity of Tall Building Construction -With Focus on the Area of Steel Work- (고층 건물에서 시공성 요인이 생산성에 미치는 영향 분석 -철골 공사를 중심으로-)

  • Yoon, Hyunbo;Kim, Yea Sang
    • Korean Journal of Construction Engineering and Management
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    • v.15 no.4
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    • pp.30-38
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    • 2014
  • Achieving high productivity and constructability are very important issues in construction industry. Study on constructability have been conducted actively, and many researches referred that improving constructability can enhance cost, quality, schedule, productivity and so on. However, there are lack of quantitative analysis, since most studies have proved correlation between productivity and constructability using questionaries and by case studies. Also, researches are mostly about specific detail scope of work to improve constructability, thus it is hard to apply constructability factors on various work in construction. In this paper, will deduct general factors affecting on constructability and evaluate effects of factors affecting on each work. Furthermore this paper will verify impact of factors affecting on productivity by multi regression anlaysis using actual data sets of high-rise building construction site.

The Constitutional Directions of Construction Information Management System Between Design and Construction in the Building Project (설계/시공간의 효율적인 정보통합관리를 위한 건설정보처리시스템 구축 방안)

  • Oh Seung-Jun;Lee Kyung-Kook;Chun Jae-Youl
    • Proceedings of the Korean Institute Of Construction Engineering and Management
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    • pp.464-467
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    • 2002
  • In Korea construction project case, architectural construction project is curtailed production because information network process within multidisciplinary isn't smooth. Particularly, the construction is not insufficient about performance, cost and material, construction process, etc. in result various question arises because of design error in construction step. And various mistake is made because communication path within multidisciplinary isn't smooth in architectural design and design change process. This research proposed the optimization method of building system which is satisfied with performance of building, cost, constructability, and proposed the information management plan which is connected with that. And The construction information in this research is restricted to design/construction information which is considerate in design step.

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Identifying Factors Affecting Labor Productivity for Residential Fire Protection System Installation (공동주택 소방설비공사의 노무생산성 영향요인 분석)

  • Oh, Jae-Hoon;Kim, Dae Young;Kim, Jae Sik;Huh, Young-Ki
    • Journal of the Korea Institute of Building Construction
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    • v.17 no.4
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    • pp.377-384
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    • 2017
  • It is generally acknowledged that subcontractors mostly allocate their resources to project relying on their previous experiences, instead of data-based judgement. Installing residential fire protection systems, typically performed by subcontractors, is labor-intensive job and its schedule is frequently changed as the contractor master schedule is often revised. Nevertheless, it is still important for subcontractors to make much effort to improve labor productivity through a thorough planning for scheduling and resource allocation. The purpose of this study is to identify significant factors that affect labor productivity for residential fire protection system installation. For this purpose, 50 potential factors that may affect productivity were identified based on literature reviews and expert interviews. These factors were further explored using correlation analysis and ANOVA test. The results showed that the labor productivity is significant impacted by various project characteristics.

A Case Study of BIM-based Framework on Constructability Tasks (BIM기반 골조공사의 시공성분석 업무 적용사례에 관한 연구)

  • Lee, Seung-Il;Kwon, Nam-Ha;Cho, Young-Sang
    • Journal of the Korea Institute of Building Construction
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    • v.10 no.5
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    • pp.45-54
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    • 2010
  • Recently more and more construction projects have become high-rise, complex and intelligent. Accordingly, such projects require an integrated management system for tasks, with a lean approach to construction with work processes for management and productivity. In particular, Construction Information Technology (CIT) fields are concerned with Building Information Modeling (BIM), which represents the process of generating and managing building data during its life cycle. Constructability research has progressed for the project goal which is a cost-time-quality of optimization by integrated construction knowledge and experience. However, the current constructability process has not been performed efficiently, as the existing 2D drawings and papers lack consistent and accurate information, it is difficult to share the contents of work, and the use of information is inefficient. This study proposes that the reformation and enhancement of BIM-based constructability work process can lead to brilliant performance in the framework of the construction phase through achieving collaboration between the design team and the workers at the site.

A Comparative Study of the Productivity through the Cost of the Precast Span Method(PSM) and Movable Scaffolding System(MSS) -By the Central Example of Company H on the Korea Train Express (KTX) (공사비 비교를 통한 Precast Span Method(PSM) 공법과 Movable Scaffolding System(MSS) 공법의 생산성 연구 -경부고속철도 H사의 사례를 중심으로)

  • Lee Tai Sik;Lee Sung Hyun;Kim Gil Hong
    • Proceedings of the Korean Institute Of Construction Engineering and Management
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    • pp.535-540
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    • 2001
  • In the early construction phase of the Korea Train Express (KTX), the Movable Scaffolding System (MSS) for the top structure of the bridge was the predominant construction method. But the method had to be changed due to arising problems and an alternative method had to be found. Company H that participated in Korea Train Express construction project achieved excellent results of performance through the introduction of the Precast Span Method (PSM), which has been previously successfully employed in foreign express train projects. This study intends to verify the superior performance of PSM over MSS in the KTX construction process by conducting a comparative analysis on PMS and MSS based on the field experience of company H. This study will not only help to understand PSM, which is expected to expand its future scope of application, but also contribute to solve the problems of PSM that occurred during the construction phase.

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Case Study on Application of DMU to Civil Infra Structures to Improve Constructibility (토목구조물분야에서 DMU 적용을 통한 시공성개선 사례 연구)

  • Park, Kyoung-Lae;Lee, Kwang-Myong;Lee, Yoon-Bum;Lee, Chung-Hee;Lee, Tae-Young
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • pp.320-323
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    • 2011
  • 본 논문에서는 BIM의 기술 중 하나인 DMU(Digital Mock-Up)을 실제 프로젝트에 적용하여 업무 효율에 기여한 결과를 소개한다. 삼성물산 건설부문의 경우 DMU는 건설 프로젝트의 입찰단계 및 시공계획 단계에서 적용되어 많은 성과를 거두었다. 입찰단계의 경우 대상 프로젝트의 교량, 터널 등의 구조물을 실제와 같은 지형조건 및 설계 조건으로 모델링하여 프로젝트의 개요 파악, 정보의 공유, 선정된 공법의 효과 분석 등에 적용하였으며 시공단계에서는 주로 복잡한 구조물의 철근 간섭 검토 및 효율적인 배근 방법 분석을 위한 도구로 사용되었다. 적용결과 공기단축, 원가절감, 시공성 향상에 기여하였으며, DMU는 향후 프로젝트 관리도구로 통합되어 구조물공사의 원가절감 및 생산성 향상에 기여할 것으로 예상된다.

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Development of Design Process Management Model using Dependency Structure Matrix for Constructability (시공성을 위한 Dependency Structure Matrix 기반의 설계 프로세스 관리 모델 개발)

  • Park, Moon-Seo;Ham, Young-Jib;Lee, Hyun-Soo;Kim, Woo-Young
    • Korean Journal of Construction Engineering and Management
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    • v.11 no.5
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    • pp.65-74
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    • 2010
  • The design with construction knowledge and experience can eliminate inefficiency in the process of construction and improve productivity in all phase of construction project. To utilize constructability knowledge most effectively in design phase, the information must be made available to the design team at the proper point in time. Current methods for effective utilization of constructability knowledge have focused on the structuralization of constructability knowledge such as checklist, which lack the consideration of the proper point in time. However, constructability knowledge which is used at the inapposite point in time consequently leads to unnecessary rework. To minimize this inefficiency and improve productivity, project manager needs to consider the design process and know what constructability knowledge is required for specific design activities. This paper therefore presents a design process management using Dependency Structure Matrix (DSM) that focus on information flows between design activities and constructability knowledge. We expect that the results of this paper will support that design process management become comprehensive management related to every phase of construction project beyond design review or inspection in design phase, and be used as a basis of the integration of design and construction.

Simulation Modeling for Productivity Analysis of Concurrent Construction Method of External Insulation Finishing System in Apartment (공동주택용 외단열 적층시공 공법의 생산성 분석을 위한 시뮬레이션 모델 개발)

  • Kim, Min Ju;Kim, Taehoon;Lim, Hyunsu;Cho, Hunhee;Kang, Kyung-In
    • Proceedings of the Korean Institute of Building Construction Conference
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    • pp.68-69
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    • 2015
  • Traditional External Insulation Finishing System(EIFS) is applied to apartment construction by performing structural framework and insulation finishing work sequentially. Separate execution of the three works increases construction cost and duration. Concurrent construction method of EIFS, which performs framework and insulation finishing work simultaneously, is introduced in order to solve these problems. However, the introduced method is exposed to the risk of construction delay caused by bottlenecks due to interacting processes and resources. Therefore, this paper presents a simulation model suitable for estimating work productivity of the concurrent construction by considering predecessor and successor processes to optimize resource allocation and minimize construction delay.

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The Production Process and Mock-up Test of Freeform Concrete Segments using LOM type 3D Printer (LOM 방식 3D 프린터를 이용한 비정형 콘크리트 부재 생산 프로세스 및 Mock-up test)

  • Lee, Dong-Youn;Lee, Dong-Min;Cho, Hun-Hee;Kang, Kyung-In
    • Journal of the Korea Institute of Building Construction
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    • v.18 no.1
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    • pp.89-98
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    • 2018
  • Recently, the importance of the construction technology of the free-formed buildings is becoming more significant, as the interest and demand for the free-formed buildings are increasing. However, it takes much time and cost during the construction of free-formed buildings because the current construction technique of freeform concrete segments is manufactured by a formwork. Therefore, in this study, we suggested a new manufacturing process based on the LOM-type 3D printer for freeform concrete segments that can shorten construction time and reduce cost when constructing freeform concrete segments, and we also verified the feasibility of production process through mock-up test. The result shows that the suggested process shortened 47.8% of production time and saved 56.2% of cost compared to the existing steel formwork method. In conclusion, it is expected that the production method of freeform concrete segments using 3D printer will contribute to the improvement of productivity of freeform concrete segments construction and the activation of new construction method for free-formed building construction.

500kg/cm$^2$고강도 콘크리트 - 재료특성$\cdot$현장시공성에 관한 연구

  • 안재현;권영호
    • 어항어장
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    • pp.69-77
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    • 1992
  • 고강도 콘크리트의 실용화 일환으로 설계기준강도 500kg/cm$^2$ 이상인 고강도 콘크리트의 현장 B/P 생산과 실대구조물의 시공성 및 강도, 온도 특성에 관한 연구를 수행하였다. 이러한 연구를 위해 현장 최적배합비 선정과 레미콘 운반시간에 따른 경시변화 시험을 수행하였고 실대구조물의 코아강도 및 콘크리트 내부온도를 측정하였다. 일반 현장재료와 장비의 사용으로도 고강도 콘크리트의 생산과 시공성을 확보할 수 있었으며 실대구조물의 코아강도가 500kg/cm$^2$ 이상을 나타냄으로써 고강도 콘크리트의 실용화에 대한 가능성을 확인할 수 있었다.

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