동적교통시설 유지관리투자모형의 실용적 모형개발
A practical approach of optimal dynamic maintenance and repair investment model for a transportation infrastructure
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초록
본 연구는 기존 교통시설의 동적유지관리투자모형을 비선형계획의 틀로 재구성하였다. 재구성된 모델은 기존 교통시설의 동적유지관리투자모형보다 해를 구함에 용이한 모델을 제공하고, 동시에 사용수요와 교통시설의 손상 2가지 사이의 상관관계를 계획기간 동안에 연속적으로 반영하고 있다. 본 연구의 모델에서 교통시설의 수요는 교통시설의 품질에 의해 영향을 받으며, 그러한 교통시설의 품질은 자연손상, 사용수요 그리고 유지관리투자에 의해 결정되는 것으로 설정되었다. 모델에 수치적용사례를 통해서 계획기간에 걸쳐서 어떻게 투자요구를 결정하는지를 예시하였다.
Abstract
This study present a nonlinear programming framework to reformulate the problem of optimal maintenance and repair policies for transportation network infrastructure. As the proposed model provides a computationally appealing framework, it preserves the relationship between demand and deterioration in which quality of a transportation infrastructure is determined by natural factors, rate of use and maintenance investments while demand for a transportation infrastructure is assumed to be a function of its quality. A numerical case presents insights how the model can determine the level of budget requirements over a finite planning horizon.
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