Korean Journal of Construction Engineering and Management (한국건설관리학회논문집)

Korea Institute of Construction Engineering and Management (한국건설관리학회)
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Analysis of Major Management Factors Affecting Crew Productivity in Road Bridge Construction Site Using IPA

IPA를 이용한 도로교량 골조공사의 작업조 생산성 관리요인의 중요도 및 실행도 분석

  • Huh, Young-Ki (Department of Architectural Engineering, Pusan National University) ;
  • Lee, Sang-Ho (Department of Architectural Engineering, Pusan National University)
  • Received : 2018.12.17
  • Accepted : 2018.12.28
  • Published : 2019.05.31
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Abstract

Crew productivity in the construction industry is an important indicator of soundness and efficiency of work process, since all works in a site are conducted as groups of people. A survey was conducted in order to reveal importance and performance of major management factors affecting crew productivity in road bridge construction site using IPA. As a result of the analysis, it was found that 'Construction equipment' and 'Human resource related' factors among five major-categories are most important but with low performance. Furthermore, from another analysis with 27 factors of sub-categories, it is revealed that factors needed sustained attention are four, namely 'Just-in-time machinery delivery', 'Formation of a crew members', 'Skill of workers', and 'Site control and management', whereas those needed much more improvement are five, such as 'Machinery performance', 'Clearity of Design', 'Clearity of shop drawing', 'Timing of work instruction and approval', and 'Clearity of work instruction'. Findings from this study will enable road agencies as well as road construction experts to enhance crew productivity in a site.

건설현장의 생산성은 견실성 및 생산활동의 효율성 평가을 위한 매우 중요한 지표이며, 건설 현장작업은 모두 작업조를 중심으로 수행됨으로 작업조의 생산성 관리는 특히 중요하다. 문헌연구 및 전문가 인터뷰를 통해 도출된 27개의 관리요인들로 설문조사를 실시하였으며 32부를 회수하여 분석하였다. 대분류항목의 실행도 및 중요도를 분석한 결과, '장비'와 '건설인력' 항목이 도로교량 공사의 작업조 생산성에 매우 중요한 것으로 나타났으며, 실행도는 중요도에 비해 비교적 미비한 것으로 밝혀졌다. 또한 소분류 항목 27개를 분석한 결과, 지속적인 관심을 가져야 하는 항목으로는 '적기의 장비조달', '효율적 작업조 구성', '작업자의 숙련도', '현장통제 및 감독능력'이 중요도에 비해 실행도가 낮음으로 보다 더 향상시킬 필요가 있는 관리 요인들로는 '장비 가동성능', '설계도서의 정확성', '시공상세도의 정확성', '작업지시 및 승인 시기', '작업지시의 정확성' 등인 것으로 밝혀졌다. 본 연구의 결과는 앞으로 도로공사의 구조체 공사에서 작업조 생산성 향상을 위해 유용하게 사용될 수 있을 것으로 사료된다.

Keywords

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Fig. 1. Research methodology

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Fig. 2. IPA Result of main category factors

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Fig. 3. IPA result of main contractors

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Fig. 4. IPA result of sub-contractors

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Fig. 5. IPA results of the sub-category factors

Table 1. Major mgmt. factors for time management of RC works

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Table 2. Factors decreasing construction productivity in housing project

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Table 3. Factors decreasing construction productivity in building project

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Table 4. Management factors of crew-productivity

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Table 5. General information of the survey respondents

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Table 6. IPA results of sub-category factors

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