Vehicles trafficability considering cone index and multi-scale terrain dependence:Case on Xizang Autonomous Region
In the view of the problem that the terrain analysis scale of traditional vehicle trafficability research was single and the impact of weather on field traffic was not considered,the impacts of terrain on field traffic were evaluated from macro to micro scales,and the difference of the soil bearing capacity due to adverse weather conditions was considered.A vehicle traffi-cability cost model integrating soil and terrain factors was established during the rainy season.On this basis,the optimal path analysis under adverse weather environment was realized using the conventional path analysis method,and its accuracy was confirmed through on-site inspection of marching routes.The results show that the accuracy of the model is improved by 12%to 39%compared with the conventional method which only considers a single slope factor.Especially in the regions of complex terrain,the planned paths are closer to the actual driving route,and the reliability and accuracy are significantly improved,which meets the practical needs of path analysis applications.
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