考虑交通荷载疲劳累积的沥青路面车辙规律与结构优化

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中图分类号：U416.2 文献标志码：A 文章编号：1005-8249（2026）02-0135-06

DOI：10.19860/j.cnki.issn1005-8249.2026.02.021

Asphalt Pavement Rutting Progression and Structural Optimization Considering Traffic Load Fatigue Accumulation

HE Haipeng'，LIU Guoyin²

（1.Resettlement and Setlement Service Center of Lanping Bai and Pumi Autonomous County，Lanping 671400， China；2. Xichang University，School of Tourism and Urban-Rural Planning， Xichang 610OO，China） Abstract：Toexplorethedevelopmentlawofruting inasphalt pavementconsidering thefatigueaccumulationof trafic load，an indooracceleratedloadingsimulationtestwasconductedtoanalyzetheruting developmentlawandfatigueaccumulation mechanism under thecoupling efectof multiplefactorssuchas temperature，axleloadandasphalt performance，anda structuraloptimization schemewasproposed.Theresultsshow thattemperatureandaxle load haveasignificantnonlinear accelerating effect on the development of rutting. When the temperature rises from 40°C to 70% ，the rut depth increases sharply from 2.53mm to 17.04mm .When the load increases from O.7 MPa to 1.0MPa ，the rut depth increases from 6.50mm to 17.14mm . The rut depth of PG 82 -22 mixture after 10，OO0 cumulative loads is only 2.8mm ，which is 77.6% （20 lowerthanthatofPG64-22.This indicates thathighPGgradeasphaltdelaystheaccumulationof plasticstrainduetomproved high-temperature viscoelasticityandelasticrecoverycapacity.Basedonthis，acomprehensiveoptimization schemecombining "strong bonding-stableskeleton"material optimizationand "upper strong-lowerstable"composite structure design was proposed.It was verified that underthe same working conditions，the optimization scheme reducedthe rut depth from 14.24mm （20 of the traditional structure to 4.2mm ，a reduction of 70.5% ，and the average rut resistance increased to 2.42 times that of the traditional structure，significantlydelaying theaccelerateddevelopment stageofruting.Theresearchresultscanprovide theoretical references for the long-term service of asphalt pavement under heavy load and high temperature.

Key words： traffic load; fatigue accumulation； asphalt pavement；rut depth ； ruting resistance

0 引言

随着我国公路交通重载化、密集化的发展，沥青路面在长期高温、反复轴载耦合作用下产生的车辙病害日益突出，成为影响高等级公路服役性能和使用寿命的主要问题[1-2]。（剩余6889字）