期刊论文

中文

中国公路学报

1001-7372

2017

30

9

10-17

10.19721/j.cnki.1001-7372.2017.09.002

51578081:国家自然科学基金 51608058:国家自然科学基金 2015318825120:交通部建设科技项目 KJ1705133:重庆市教委科学技术研究项目

本校为第一机构

为了揭示在役沥青路面结构的黏弹特性,给基于黏弹性本构的沥青路面设计提供参考,针对现有沥青路面应变测试仍然基于弹性假设的现状,依据三维线黏弹本构理论,通过现场埋设应变和温度传感器,开展不同温度与轴载作用下的沥青路面静载蠕变试验。基于实测应变变化规律对现有表征沥青混合料黏弹性本构模型的适用性进行了判别,并分析温度、偏应力等外部影响因素对沥青层黏弹性参数的影响规律,由此建立沥青路面应变随外部因素变化的预估模型。结果表明:实测蠕变历时曲线呈现的黏弹特性很好地符合Burgers模型,拟合判定系数超过0.98;Burgers模型的4个参数(G_1,G_2,η_1及η_2)均随温度的提高而减小,随偏应...

In order to reveal the viscoelastic characteristic of asphalt pavement structure in service and provide a reference for the asphalt pavement design based on the viscoelastic constitutive theory, static load creep tests on asphalt pavement were conducted under different temperatures and axle loads by means of temperature and strain sensors on the asphalt surface. The tests were designed by dint of the three-dimensional linear viscoelastic constitutive theory, in allusion to the situation that existing strain tests of asphalt pavement were on the basis of the elastic constitutive hypothesis. The...