| 沥青混合料的粘弹性疲劳损伤模型研究 |
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| 引用本文： | 关宏信,郑健龙,张起森.沥青混合料的粘弹性疲劳损伤模型研究[J].力学与实践,2007,29(2):50-53. |
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| 作者姓名： | 关宏信 郑健龙 张起森 |
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| 作者单位： | 长沙理工大学公路工程学院 410076 长沙理工大学公路工程学院 410076 长沙理工大学公路工程学院 410076 |
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| 摘 要： | 从沥青混合料的黏弹性本构模型出发，按应变等效假设
将损伤引进本构模型，推导周期应力条件下含损伤的耗散能表达式，进而得到黏弹性损伤演
化方程和疲劳方程；该模型可以综合反映应力、加载频率和温度的影响，适合用来分析沥青
路面的疲劳损伤问题；利用MTS开展了沥青混合料的疲劳损伤试验，确定了相应的黏弹性疲
劳损伤模型参数，据此开展了模型验证，结果表明模型与实测值之间相关性很好.
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| 关 键 词： | 沥青混合料 黏弹性 疲劳损伤 模型 试验 |
| 收稿时间： | 2006-1-17 |
| 修稿时间： | 2006-01-17 |
VISCOELASTIC FATIGUE DAMAGE MODEL OF BITUMINOUS MIXTURE |
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| GUAN Hongxin,ZHENG Jianlong,ZHANG Qisen.VISCOELASTIC FATIGUE DAMAGE MODEL OF BITUMINOUS MIXTURE[J].Mechanics and Engineering,2007,29(2):50-53. |
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| Authors: | GUAN Hongxin ZHENG Jianlong ZHANG Qisen |
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| Abstract: | In this paper, the ``strain equivalent assumption' is
introduced into the viscoelastic constitutive model of bituminous
mixture and the dissipation energy expression with damage, the
viscoelastic damage evolution law and the fatigue function under cycling
loading are deduced. The viscoelatic
fatigue damage model consists of three factors: stress, frequency and
temperature. A qualitative analysis indicates that the viscoelatic fatigue
damage model can be applied to analyze fatigue damage of asphalt pavement.
Laboratory fatigue tests of bituminous mixture at different stresses,
frequencies and temperatures are carried out on MTS to obtain the parameters
of viscoelatic fatigue damage model and the viscoelatic fatigue damage
model is verified. |
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| Keywords: | bituminous mixture viscoelatic fatigue damage model test |
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