• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2014년도 추계 학술논문 발표대회
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• pp.90-91
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• 2014

Previous research related to the construction schedule management has focused on construction schedule categorization, construction schedule management, and system development to manage construction schedule risks. Therefore this research present quantitively deducing method for managing construction schedule risk. Based on the investigation, this study suggested the probable risk factors and a practical management method, through interviews and discussions with experts. The quantified risks should be adapted for an individually specific projects and managed until the project is complete. To maintain the continuity of schedule risks, the schedule risk management procedures should be controlled during the performance of the construction project.

• 한국정보통신학회논문지
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• 제14권3호
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• pp.669-677
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• 2010

본 논문에서는 스마트폰 상에서 프로젝트 관리를 위한 소셜 네트워킹 서비스 기반의 일정 통지 및 이슈추적 시스템을 새롭게 제안하고자 한다. 제안된 시스템은 서버 시스템과 클라이언트 시스템으로 나뉜다. 서버 시스템은 기존의 소셜 네트워킹 서비스를 적극적으로 활용하여 참여자에게 프로젝트 작업의 데드라인에 대한 통지와 이슈 추적을 가능하게 한다. 스마트폰 상에서 개발된 클라이언트 시스템은 프로젝트 참여자에게 간트 차트를 디스플레이 해 주고, 자신의 일정을 입력 내지 수정할 수 있도록 한다. 제안된 시스템은 기존의 스마트폰이 가지고 있는 이동성과 소셜 네트워킹 서비스가 가지는 연결성을 적극적으로 활용하여, 프로젝트 개발에서의 일정 통지 및 이슈추적에 이용하며, 이를 통해 소셜 네트워킹 서비스의 새로운 용용 가능성을 제시한다.

• 한국건설관리학회논문집
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• 제9권1호
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• pp.66-76
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• 2008

플랜트공사는 토목, 건축, 기계, 전기 공종들이 연동되어 작업이 진행되는 복합공종이다. 또한 일반 공사와 비교시 매우 짧은 공기에 대규모의 공사를 수행하여야 하는 공정상의 특징을 갖고 있다. 이러한 특성들로 인하여 플랜트공사에서 공정관리는 매우 중요한 요소가 되고 있다. 4D CAD에 의한 공정정보의 시각화는 이러한 복합공정에서 더욱 필요성을 갖게 된다. 본 연구에서는 플랜트공사의 특성을 고려한 4D CAD시스템 기능 구성방법론과 실제 시스템 개발을 시도한다. 이를 위하여 플랜트공사 현장의 공정작업 특성을 분석한 후 4D CAD 기능을 구성함으로써, 기존 시스템에서 시도되지 않은 플랜트공사에 특화된 공정시각화 기능구축을 시도하고 있다.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2012년도 춘계 학술논문 발표대회
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• pp.143-144
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• 2012

A number of construction projects tied to the concerns and decision-making is also very complicated. In addition, more than any other industry, is inherent in many risk factors. In the course of the construction project on risk factors that exist in the early stages of project risk factors to predict in advance and prepare a project by shortening the construction period and project cost as you can to maximize performance. In this study, I proposed risk management processes and how they are used in web-based schedule risk in the process of change management system, and between 3D CAD, 4D CAD taking into account the linkages, risk management strategy process in the BIM environment.

• 국제학술발표논문집
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• The 5th International Conference on Construction Engineering and Project Management
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• pp.169-172
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• 2013

Building Information Modeling (BIM) is an effective decision-making platform that helps to save project cost and enhance quality of construction. By generating and linking a wide variety of objects data, BIM can be effectively utilized, and it should be ensured that object properties maintain consistency throughout the project period of design, estimates, construction, maintenance and repair. This study examined how to utilize BIM data in a construction project, by linking cost and schedule data in web environment, to better utilize the information and maintain consistency of the BIM information. To do so, the model integrated WBS data and CBS data, linked them with BIM model to realize 5D simulation in web environment. As a result, cost and schedule data could be simultaneously acquired, and object properties-cost, schedule, location-as well. These are expected to contribute to developing a BIM-based automatic data-processing system in web environment.

• 국제학술발표논문집
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.637-638
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• 2015

There has been growing interests in life-cycle project management in the construction industry. A lot of attention is given to Building Information Modeling (BIM) which stores and uses a variety of construction information for the life cycle of project management. However, due to the additional workload arising from BIM, its expected effects versus its input costs are still under discussion in practice. As an attempt to address this issue, one of previous studies suggested an automated linking process by developing Standard Classification Numbering System (SCNS) and Geometry Breakdown Structure (GBS) to enhance the efficiency of integration process of BIM objects, cost, and schedule. Though SCNS and GBS facilitates identifying all different dataset, making object sets and linking schedule activities still needs to be manually done without having an automated tool. In this context, the purpose of this paper is to develop and validate a fully automated integration system for 3D-objects, cost, and schedule. A prototype system for single family homes (Hanok) was developed and tested in order to verify its efficiency.

• 한국군사과학기술학회지
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• 제21권3호
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• pp.396-402
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• 2018

Earned Value Management(EVM) has been used to manage and forecast defense project schedule and cost over the last two decades in the world. However to support the lacking ability of schedule analysis in traditional EVM, earned schedule(ES) has been introduced as a tool to more accurately estimate schedule performance. This paper compares which method EVM or ES, provides more accurate schedule predictors in 32 Korean defense research and development projects. As a result of comparison, the ES method can predict the future schedule more reliably than the EVM method. We also analyze early warning function of schedule performance index considering project duration extension point. Through the analysis results, we confirm that both the EVM and the ES method lack the ability of the early warning in terms of the current schedule management criterion.

• 국제학술발표논문집
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• The 1th International Conference on Construction Engineering and Project Management
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• pp.897-901
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• 2005

In the highway engineering, the performance, quantity and status of machines available for the project have direct impact on the project time. For instance, the status of machines, such as working or in trouble, have great influence on the activity execution. Therefore, while scheduling the project, the project manager always increases the spare machines or prolong the activity time to avoid delaying the project time when some of the machines are in trouble in construction site. However, how many are the spare machines and how long are the prolonged activity time, which are estimated subjectively by the manager. This subjective estimation has been criticized for systematically overestimating or underestimating quantity of the machines and the activity time. In the paper, we propose and prototype a model to simulate the status of the machines in construction site, and then to evaluate the schedule feasibility considering the performance, quantity and statues of the machines involved.

• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.400-408
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• 2009

Simulation applications for analyzing the productivity of construction operations at operation level and project schedules at project level are crucial methods in project management. The application at two different levels should be very tightly linked to each other in practice. However, appropriate integration at the levels is not achieved in that existing systems do not support to integrate operation models into a schedule model. This paper presents a new approach named to Discrete Event Simulation-Nesting modeling approach, which supports not only productivity analysis at operation level but also schedule management at a project level. The system developed by the authors allows creating operation models at the operation level, maintaining them in operation model library, executing sensitivity analysis to find the behaviors of the operation models when different combination of resources are used as existing DES systems do. On top of the conventional functions, the new system facilitates to find the optimum solution of resource combinations which satisfy the user's interest by computing the hourly productivity and the hourly cost of the operation. By drag-and-dropping an operation model kept in the operation model library, the operation models are integrated into an activity of the schedule model. When a complete schedule model is established by nesting operation models into the schedule model, stochastic simulation based scheduling is executed. A case study is presented to demonstrate the new simulation system and verify the validity of the system.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2007년도 정기학술발표대회 논문집
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• pp.682-686
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• 2007

건설사업은 다양한 시대적 요구를 충족시키기 위해 매우 다변화되었고, 그에 따라 참여주체들이 많아지고 복잡성이 증가하게 되었으며, 사업의 규모 측면에 있어서도 날로 대형화되어 가고 있는 실정이다. 하지만 현재의 건설 프로젝트 공정관리 수준은 1950년대에 만들어진 PERT나 CPM을 반세기가 지난 지금까지 그대로 사용하고 있을 정도로 후진성을 면치 못하고 있다. 또한 현재의 공정관리는 결과위주의 방식으로 건설사업 과정에서 나타나는 작업 간의 정보의 흐름과 변이요소의 발생을 충분히 고려하지 못하고 있다. 따라서 본 연구에서는 기존의 공정관리도구들의 단점을 개선하고 공정관리기술의 한계를 극복하기 위하여, 국내에는 잘 알려지지 않은 설계관리기법인 DSM(Dependency Structure Matrix)를 도입하여 건설사업 공정관리에 대한 적용성을 고찰해보고자 한다.