| 考虑温度效应的沥青混合料参数模型 |
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| 引用本文： | 董满生, 鹿婧, 凌天清, 孙志彬, 李凌林. 考虑温度效应的沥青混合料参数模型[J]. 工程力学, 2016, 33(6): 180-185,193. DOI: 10.6052/j.issn.1000-4750.2014.11.0960 |
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| 作者姓名： | 董满生 鹿婧 凌天清 孙志彬 李凌林 |
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| 作者单位： | 1.合肥工业大学交通运输工程学院, 合肥 230009;;2.重庆交通大学土木工程学院, 重庆 400074 |
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| 基金项目： | 国家自然科学基金项目(51408173);重庆交通大学山区道路建设与维修技术重点实验室开放基金项目(20100133) |
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| 摘 要： | 选取修正Burgers模型作为沥青混合料的粘弹性本构模型,基于最小二乘法原理对单轴压缩蠕变试验数据进行拟合,获得本构模型的粘弹性参数。考虑温度变化对沥青混合料粘弹性的影响,建立修正Burgers模型的粘弹性参数模型,运用实验数据拟合粘弹性参数模型的分项系数,理论计算考虑温度效应的蠕变柔量,与实验结果对比分析表明,参数模型有较好的适用性,拟合精度高。粘弹性参数模型能将有限的实验数据推广到其他温度工况,节约大量实验,具有很好适用性。
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| 关 键 词： | 道路工程 沥青混合料 修正Burgers模型 温度效应 参数模型 蠕变 |
| 收稿时间： | 2014-11-16 |
| 修稿时间： | 2015-08-28 |
PARAMETRIC MODEL FOR ASPHALT MIXTURES CONSIDERING TEMPERATURE EFFECT |
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| DONG Man-sheng, LU Jing, LING Tian-qing, SUN Zhi-bin, LI Ling-lin. PARAMETRIC MODEL FOR ASPHALT MIXTURES CONSIDERING TEMPERATURE EFFECT[J]. Engineering Mechanics, 2016, 33(6): 180-185,193. DOI: 10.6052/j.issn.1000-4750.2014.11.0960 |
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| Authors: | DONG Man-sheng LU Jing LING Tian-qing SUN Zhi-bin LI Ling-lin |
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| Affiliation: | 1.School of Traffic and Transportation Engineering, Hefei University of Technology, Hefei 230009, China;;2.School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China |
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| Abstract: | The modified Burgers model is used as a viscoelastic constitutive model for asphalt mixtures. The viscoelastic parameters of the constitutive model are obtained by fitting the data of uniaxial creep tests with nonlinear least squares method. The modified Burgers model is established by considering the effect of temperature variation on the viscoelasticity of asphalt mixtures. The partial factors of the viscoelastic parametric model are determined by fitting experimental data. The creep compliance considering temperature effect is calculated theoretically. The comparison with experimental results indicates that the parametric model is highly applicable and precise. The viscoelastic parametric model is of good applicability and can be used to generalize the limited experimental data to other temperature conditions so as to save experimental efforts. |
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| Keywords: | road engineering asphalt mixtures modified Burgers model temperature effect parametric model creep |
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