| 沥青混合料永久变形的弹黏塑-损伤力学模型 |
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| 引用本文： | 张久鹏,黄晓明.沥青混合料永久变形的弹黏塑-损伤力学模型[J].东南大学学报(自然科学版),2010,40(1). |
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| 作者姓名： | 张久鹏 黄晓明 |
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| 作者单位： | 1. 长安大学特殊地区公路工程教育部重点实验室,西安,710064
2. 东南大学交通学院,南京,210096 |
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| 基金项目： | 国家自然科学基金资助项目(50608006);;交通部交通应用基础研究资助项目(2006319812120) |
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| 摘 要： | 对Burgers模型中串联黏壶进行了改进,并将改进模型看成是由三单元Van Der Poel模型与黏塑性元件串联组成.综合运用黏塑性力学和损伤力学理论,同时引入应变硬化变量和损伤软化变量,建立了基于应变硬化理论的沥青混合料损伤蠕变模型.再采用半正矢波间歇荷载模拟实际路面轮载作用,推导了重复荷载作用下沥青混合料永久变形的弹黏塑性损伤力学模型.根据室内重复荷载永久变形试验结果,运用最小二乘法原理,得到了弹黏塑性损伤力学模型的相关参数,并对该模型进行了验证.验证结果表明,该模型可以全面、统一地描述沥青混合料永久变形的三阶段特性.
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| 关 键 词： | 沥青混合料 永久变形 弹黏塑性 损伤 本构模型 |
Viscoelastoplastic-damage mechanics model of permanent deformation in asphalt mixture |
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| Zhang Jiupeng,Huang Xiaoming.Viscoelastoplastic-damage mechanics model of permanent deformation in asphalt mixture[J].Journal of Southeast University(Natural Science Edition),2010,40(1). |
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| Authors: | Zhang Jiupeng Huang Xiaoming |
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| Institution: | 1 Key Laboratory for Special Area Highway Engineering of Ministry of Education;Chang'an University;Xi'an 710064;China;2 School of Transportation;Southeast University;Nanjing 210096;China |
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| Abstract: | The series-wound dashpot of Burgers model was modified and the model was considered as a combination of viscoelastic-plastic dashpot and Van Der Poel model.Coupled with the viscoelastic mechanics theory and damage mechanics theory,a new damage-creep model is established for asphalt mixture by introducing a strain hardening variable and a damage softening variable.A loading cycle consisting of a haversine load followed by a rest period was adopted to simulate the actual vehicle loading on asphalt pavement,an... |
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| Keywords: | asphalt mixture permanent deformation viscoelastoplastic damage constitutive model |
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