• Proceedings of the Korean Institute Of Construction Engineering and Management
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• autumn
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• pp.85-90
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• 2002

In the construction industry, projects are becoming increasingly large and complex, involving multiple subcontractors. Traditional centralized coordination techniques used by the general contractors become less effective as subcontractors perform most work and provide their own resources. When subcontractors cannot provide enough resources, they hinder their own performance as well as that of other subcontractors and ultimately the entire project. Thus, construction projects need a new distributed coordination approach wherein all of the concerned subcontractors can reschedule a project dynamically. To enable the new distributed coordination of project schedule changes, I developed a novel agent-based compensatory negotiation methodology, which allows software agents to simulate negotiations on behalf of their human subcontractors. This research formalizes the necessary steps that would help construction project participants to increase the efficiency of their resource use, which in turn will enhance successful completions of whole projects.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2006.11a
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• pp.574-578
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• 2006

Simulation has considerable potential as the tool of construction management, but in the case of domestic, it is at an early stage applying simulation to micro-process assesment. For applying simulation to the construction process, much effort is needed to collect input data and to build the model including the characteristics of the fields. This study introduces the methodology to build the simulation model, then verifies the model with the operation data.

• Proceedings of the Safety Management and Science Conference
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• 2002.11a
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• pp.215-220
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• 2002

건설현장 재해가 차지하는 국가적 손실을 감소시키기 위해 그동안 정부 및 관계기관과 많은 건설사들의 노력에도 불구하고 건설현장 작업 공정상 중대 사고들이 끊이지 않아 이에 대한 실증적 연구가 절실히 요구되고 있다. 현재 건설업의 안전관리 시스템은 유해·위험방지계획서 제도를 시행하고 있으나, 기존의 다른 자료를 답습한 내용이 대부분이고, 대규모 공사인 경우는 유해·위험방지계획서 작성 자체도 큰 부담을 갖을 수밖에 없는 현실에서 실질적인 수행이 어려운 실정이다. 그리고, 공사 착공 후 잦은 설계변경과 공법 변화 등에 따른 위험 요인에 적절히 대응하지 못하는 문제점이 도출되고 있다. 이러한 연유로 각각의 작업공정 개시전 공정별 작업 안전계획을 수립하여 적기에 능동적이고 유기적인 사전위험요인 제거가 가능한 공정안전관리기법(PSM: Process Safety Management)을 건설분야에 도입하여 시행하는 것이 필요하다고 사료된다. 본 논문에서는 이러한 문제점을 해결하고자 건설현장에 핵심공정에 대한 사전 안전성 확보로 재해를 예방하는 P.S.M. 기법을 도입하여 건설업 중대재해를 예방하는 방안을 찾아보고자 한다.

• Korean Journal of Construction Engineering and Management
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• v.4 no.4 s.16
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• pp.145-154
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• 2003

The change in environment of construction industry and the advancement of information technology require the improvement of construction project efficiency. However, construction industry still lacks performance-measuring tools that are the requirements of efficient project management system. In case of the schedule management system, schedule is usually being managed by result-oriented measurements such as completion time, spent cost, and progress rate, which are not good enough to control the overall continuity of work-flow. This research aimed to systemize the overall construction process and to develop the indicators for measuring performance of TACT activities during finishing work period that can contribute to the systemization of TACT management.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• autumn
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• pp.126-134
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• 2003

The change in environment of construction industry and the advancement of information technology require the improvement of construction project efficiency. However, construction industry still lacks performance-measuring tools that are the requirements of efficient project management system. In case of the schedule management system, schedule is usually being managed by result-oriented measurements such as completion time, spent cost, and progress rate, which are not good enough to control the overall continuity of work-flow. This research aimed to systemize the overall construction process and to develop the indicators for measuring performance of TACT activities during finishing work period that can contribute to the systemization of TACT management.

• Korean Journal of Construction Engineering and Management
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• v.5 no.2 s.18
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• pp.123-135
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• 2004

Construction accident have been increasing in despite of safety management activities and education in construction site. This study surveyed safety organization, education, safety management, scheduling, safety checklist with construction firms in order to grasp the actual condition. A improved method is suggested that safety checklist is supplemented with various safety materials and then stored as database. Furthermore, safety checklists are connected and operated with schedule in ender to more efficiently prevent construction accidents.

• Korean Journal of Construction Engineering and Management
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• v.5 no.1 s.17
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• pp.124-132
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• 2004

A human resource management of the general contractors is to mostly deal with daily input by each subcontractor in construction fields. However, this way has some limitations; the identification of proper human-input and productivity, preventive activities or efforts for minimizing schedule delay. The reason why these limitations are that few systematic efforts through a coordinated field administration with the construction schedule planning and human resources. Therefore, on the basis of the construction schedule planning, human resource management of subcontractors is necessary to make for an improvement in construction schedule control. Daily Scheduling Check System(DSCS), as the linked human resources on an existed CPM scheduling software, was developed and this paper then verified validity and effectiveness of using the DSCS for the framework of some actual apartment construction projects

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2006.11a
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• pp.444-447
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• 2006

Construction managers need to pay a close attention to the resource utilization in order to deliver the construction project successfully. Construction scheduling is crucial for resource control in that it provides information when and how much to bring down work force to sites. In scheduling, activity duration is projected based on the productivity of historical data or the intuition of scheduler. This paper studies the opportunity of applying cost-based productivity for estimating activity duration. For cost-based productivity, the cost of resource is used as an input and the work quantities as an output. Out of historical data, regression model has been developed to understand the validity of applying cost-based productivity in projecting activity duration. The result of study will work as a prerequisite for implementing the environment of database-based construction scheduling.

• Korean Journal of Construction Engineering and Management
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• v.6 no.5 s.27
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• pp.119-127
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• 2005

According to the recent systemic changes such as construction market reduction, five days per week system, introduction of construction duration reduction bidding system and post-construction sale system, the bidding competition have been enhanced. However, there are many construction schedule risks which could delay construction completion. Without the proper identification of construction schedule risks and the structured construction schedule risk management, the competitive advantages of construction project could not be made. Previous researches to solve the problem have been focused on the construction schedule categorization, construction schedule management, and the system development to manage the construction schedule risk. Therefore, this study selected the reinforeced concrete construction as the studied work due to the major impact characteristics on the total construction duration and the quite accident rate, and then proposed the real construction schedule risks of reinforced concrete construction and the construction risk management method based on the previous studies, many times of expert interviews and brainstorming.

• Construction Engineering and Management
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• v.4 no.3 s.15
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• pp.15-18
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• 2003