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혼합 정수 비선형 계획법 기반 토공사 최적 장비 선정 방법 제시
고용호 ( Ko Yong-ho ),키앙 ( Ngov Kheang ),이수민 ( Lee Su-min ),신도형 ( Shin Do-hyoung ),한승우 ( Han Seung-woo ) 한국건축시공학회 2023 한국건축시공학회 학술발표대회 논문집 Vol.23 No.1
Optimal fleet management in the planning stage is one of the most critical activities that guarantee successful construction projects. In South Korea, the construction standard production rate database (CSPRD) is normally employed. However, when it comes to a trade-off problem that involves decision-making on optimal sets of equipment to perform a certain task, the method will require the planners’ in-depth knowledge and experience regarding the target process and a time consuming estimation of the performance of every possible scenario must be conducted for the deduction of the optimal fleet management. On this account, this research paper proposes a lightweight method of using mixed integer nonlinear programming (MINLP) in multi-objective problems based on CSPRD-based mathematical equations to assist planners in the preplanning stage of choosing the optimal sets of types and size machinery to efficiently arrange the construction scheduling and budgeting.
이산형 이벤트 시뮬레이션 기반 최적의 건설장비 조합 도출 방법 제시 - 표준품셈 건설기계 시공능력 산식을 기반으로 -
고용호,키앙,노재윤,김유진,한승우,Ko, Yongho,Ngov, Kheang,Noh, Jaeyun,Kim, Yujin,Han, Seungwoo 한국건설관리학회 2022 한국건설관리학회 논문집 Vol.23 No.6
Productivity estimation of construction operations is crucial to successful project delivery. Especially in the preconstruction phase, the adequacy and effectiveness of plans directly affect the actual performance of operations. Currently, productivity estimation is conducted by referring to existing references such as the Construction Standard Production Rate. However, it is difficult to promptly apply changing conditions of operations when using such references. Moreover, it is difficult to deduce the optimal combination of construction machinery for the given condition. This paper presents a simple simulation model that can be used to generate productivity data that considers site conditions and construction equipment combination. The suggested method is expected to be used as a decision making assisting tool for practitioners who rely on estimations using the Construction Standard Production Rate when establishing construction plans using heavy machinery such as backhoes, loaders and dumptrucks.
시뮬레이션 기법 기반 공정계획 수립을 위한 데이터베이스 구축 방법론
고용호 ( Ko Yong-ho ),노재윤 ( Noh Jae-yun ),키앙 ( Ngov Kheang ),신도형 ( Shin Do-hyoung ),한승우 ( Han Seung-woo ) 한국건축시공학회 2022 한국건축시공학회 학술발표대회 논문집 Vol.22 No.1
The domestic process planning generally relies on calculations based on the construction-standard-production-rate. This method requires trial and error practice during the construction phase to deduce the optimized equipment combination for time and cost. Trial and error during construction can lead to cost overruns and schedule delays. Accordingly, this paper suggests an advanced method for establishing a productivity database based on combinations of equipment and also considering site conditions in order to reduce the timely effort for deducing the optimized equipment combination. For this purpose DES (Discrete Event Simulation) model was developed based on the information provided in the construction-standard-production-rate.