河南城建学院学报2026，Vol.35Issue(4)：42-50,9.DOI:10.14140/j.cnki.hncjxb.2026.04.005
行车速度影响下柔性基层沥青路面轴载换算系数修正方法
A modification method for axle load equivalency factors of flexible base asphalt pavements considering vehicle speed
摘要
Abstract
To quantify the influence of vehicle speed on the axle load equivalency factor of flexible-base as-phalt pavements,a speed correction framework was established based on the principle of equivalence,and a speed correction coefficient was incorporated into the existing static axle load equivalency system specified in current design codes.A three-dimensional moving load dynamic analysis model was developed in ABAQUS to calculate the critical mechanical responses of pavement structures under different design speeds.Three design criteria were considered:permanent deformation control of the asphalt mixture layer,fa-tigue control of the asphalt mixture layer,and permanent deformation control of the subgrade.Corresponding speed correction coefficients and their variation patterns were determined for each criterion.The results indi-cate that increasing speed generally reduces the critical responses,although the sensitivity varies among structural layers.Under the permanent deformation control of the asphalt mixture layer,the speed correction coefficient ranges from 0.973 3 to 0.995 9,close to unity.Under fatigue control of the asphalt mixture layer,the coefficient ranges from 0.718 5 to 0.899 0,decreasing steadily with increasing speed.Under permanent deformation control of the subgrade,the coefficient ranges from 0.303 9 to 0.895 1,exhibiting significant nonlinear decay.The findings can provide a basis for equivalent axle load correction and structural parame-ter selection for flexible base asphalt pavements under various design speed conditions.关键词
道路工程/柔性基层沥青路面/轴载换算系数/行车速度/速度修正系数/有限元分析Key words
road engineering/flexible base asphalt pavement/axle load equivalency factor/vehicle speed/speed correction factor/finite element analysis分类
交通工程引用本文复制引用
韦璐,王佳乐..行车速度影响下柔性基层沥青路面轴载换算系数修正方法[J].河南城建学院学报,2026,35(4):42-50,9.基金项目
安徽省高校自然科学研究重点项目(2024AH051792) （2024AH051792）
