• 국제학술발표논문집
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• The 1th International Conference on Construction Engineering and Project Management
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• pp.917-923
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• 2005

Scheduling is one of the main functions in construction project to determine the sequence of activities necessary to complete a project. The scheduling techniques provide important information crucial to a project's success. Highway construction project the paving activity can be considered a linear activity. Linear scheduling technique may be better suited for linear projects than other scheduling techniques. A new type of scheduling in linear project is calling Linear Scheduling Model (LSM). The Project monitoring and controlling is very ease to identify that all the stage of linear project and have more advantages.

• 국제학술발표논문집
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• The 5th International Conference on Construction Engineering and Project Management
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• pp.403-411
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• 2013

Horizontal construction projects such as oil and gas pipeline projects typically involve repetitive-work activities with the same crew and equipment from one end of the project to the other. Repetitive scheduling also known as linear scheduling is known to have superior schedule management capabilities specifically for such horizontal construction projects. This study discusses on expanding the capabilities of repetitive scheduling to account for the variance in production rates and visual representation by developing an automated alignment based linear scheduling program for applying temporal and spatial changes in production rates. The study outlines a framework to apply changes in productions rates when and where they will occur along the horizontal alignment of the project and illustrates the complexity of construction through the time-location chart through a new linear scheduling model, Linear Scheduling Model with Varying Production Rates (LSM_VPR). The program uses empirically derived production rate equations with appropriate variables as an input at the appropriate time and location based on actual 750 mile natural gas liquids pipeline project starting in Wyoming and terminating in the center of Kansas. The study showed that the changes in production rates due to time and location resulted in a close approximation of the actual progress of work as compared to the planned progress and can be modeled for use in predicting future linear construction projects. LSM_VPR allows the scheduler to develop schedule durations based on minimal project information. The model also allows the scheduler to analyze the impact of various routes or start dates for construction and the corresponding impact on the schedule. In addition, the graphical format lets the construction team to visualize the obstacles in the project when and where they occur due to a new feature called the Activity Performance Index (API). This index is used to shade the linear scheduling chart by time and location with the variation in color indicating the variance in predicted production rate from the desired production rate.

• 한국건설관리학회논문집
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• 제12권1호
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• pp.23-32
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• 2011

국내 일부 건설사는 초고층 건축공사와 같이 반복 공종이 많은 건축물에 일종의 선형 공정계획인 택트 공정계획을 수립하고 수행하고 있다. 선형 공정계획 모델(Linear Scheduling Model: LSM)은 작업 공간과 시간의 정보를 제공하는 시각적 도구로써 연구가 되어왔다. CPM 네트워크 공정표의 구속조건(종료 후 종료, 시작 후 종료, 종료 후 시작, 시작 후 시작)과 마찬가지로 선형계획모델 또한 작업간의 관계간의 구속조건이 발생한다. 특히, 네트워크 공정표를 호환하기 위하여 작업간의 중요 속성간의 관계성의 경계 조건을 정의하는 것이 필요하다. 따라서 본 연구는 선형 공정계획을 수립 시 발생하는 액티비티간의 공간상의 경계조건을 분석한다. 또한 선형 공정계획의 액티비티 간의 관계성을 고려하여 현재 일부 건설회사를 중심으로 사용하고 있는 택트 공정계획에 제안한 경계조건을 반영하여 택트 공정계획 수립과 관리를 위해 고려해야 하는 주요 사항을 제시하는 것이 본 연구의 목적이다.