本文完善了运输费用计算模型，建立了运输费用与轴重的关系；建立了现有轴限下和轴限提高后的轴重分布模型，对两种分布模型的运输费用进行了比较分析。 This paper improves the transportation cost calculation model and establishes the relationship between transportation cost and axle load. The axle load distribution model under the existing axle limit and axle limit is established, and the transportation costs of the two distribution models are comparatively analyzed.