An optimization model of a highway route scheme in permafrost regions

Abstract To establish a more realistic and comprehensive algorithm to assist decision makers in optimizing a route in a permafrost regions, the optimal design should be determined and funds should be used more efficiently. In this paper, we used the permafrost subgrade treatment, the permafrost distribution, geological engineering conditions, interference of facilities along the route, route length and 10 other indicators to reflect the factors affecting the selection of route in permafrost regions. An optimization model for highway route scheme was established based on matter element theory by comparing the optimal value of each evaluation program. The weight of each index was determined by an analytical hierarchy process. A case study shows that the optimal model was simple and intuitive, providing a new comprehensive evaluation method for route scheme selection considering the unique geological conditions in permafrost regions.