路基工程Issue(3)：125-129,5.DOI:10.13379/j.issn.1003-8825.2018.03.26
基于有限混合分布建模方法的道路轴载模型研究
Study on Axle Load Model of Road Based on Finite Mixed Distribution Modeling Method
朱先智1
作者信息
- 1. 深圳市城市规划设计研究院有限公司,广东 深圳 518000
- 折叠
摘要
Abstract
Axle load spectrum is of critical importance for road pavement design. In this paper, finite mixed distribution modeling method is proposed to precisely modelling the distribution features of traffic axle loads and the related approaches of foundation distribution selection, parameters calibration and error optimization based on least square method are demonstrated. Several site-specific WIM data is utilized to validate the finite mixed distribution model and typical distribution patterns of single and coupling axle loads are established. The results indicate the finite linear combination of normal and lognormal distributions give a good fit on the WIM data, the calculated R2 are all over 0. 96, which show a high fitting precision. The proposed finite mixed distribution models have the advantages of easy parameter-calibration and continuously differentiable, which could be widely applied to any presented traffic axle loads. Moreover, the full probabilistic models from the method can be potentially as the theoretical basis for pavement design or assessment.关键词
道路/路面设计/轴载模型/有限混合分布/WIM 数据Key words
road/pavement design/axle load model/finite mixed distribution/WIM data分类
交通工程引用本文复制引用
朱先智..基于有限混合分布建模方法的道路轴载模型研究[J].路基工程,2018,(3):125-129,5.
