Analysis of Crack Growth on the Understratum of Asphalt Surface
under Coupling Effect of Vehicle Load and Seepage Pressure

doi:10.3969/j.issn.1674-0696.2012.05.11

Journal of Chongqing Jiaotong University(Natural Science) ›› 2012, Vol. 31 ›› Issue (5): 962-965.DOI: 10.3969/j.issn.1674-0696.2012.05.11

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Analysis of Crack Growth on the Understratum of Asphalt Surface under Coupling Effect of Vehicle Load and Seepage Pressure

Wu Guoxiong¹，Tan Dongjie¹，Yuan Chuanmin²

1.School of Civil Engineering ＆ Architecture，Chongqing Jiaotong University，Chongqing 400074，China; 2.Chongqing Municipal Engineering Design ＆ Research Institute，Chongqing 40007²，China

Received:2012-05-13 Revised:2012-06-11 Online:2012-10-15 Published:2015-01-22

荷载与渗压耦合作用下沥青面层层底裂纹扩展分析

吴国雄¹，谭栋杰¹，袁传泯²

1.重庆交通大学土木建筑学院，重庆400074; 2.重庆市市政设计研究院，重庆400072

作者简介:吴国雄(1966—)，男，湖北崇阳人，教授，博士生导师，主要从事道路工程方面的研究。E-mail:wgx_ph.d@163.com。
基金资助:
国家自然科学基金项目( 50178374) ; 教育部博士点基金项目( 20095522110001)

Abstract

Abstract: Based on the linear elastic fracture mechanics and the finite element analysis method，this thesis analyzes the crack growth on the understratum with cracks of the surface of the asphalt pavement under coupling effect of vehicle load and hydrodynamic pressure． The result shows that the hydrodynamic pressure significantly changes the crack growth regularity of the understratum of the asphalt surface under symmetrical load and partial load． As the hydrodynamic pressure increases， the crack-tip shows compound forms of stretching growth and shearing growth，which accelerates the damage of the asphalt pavement．

Key words: asphalt pavement, hydrodynamic pressure, vehicle load, coupling effect, crack growth, finite element analysis

摘要： 基于线弹性断裂力学原理和有限元分析方法，对汽车荷载与动水压力耦合作用的面层层底含裂纹的沥青路面进行裂纹扩展规律研究与分析。结果表明: 动水压力的作用明显改变了对称荷载与偏荷载作用下沥青面层层底的裂纹扩展规律，并随着动水压力增大，裂纹尖端呈现张拉型扩展与剪切型扩展共同作用的复合形式，从而加速了沥青路面的破坏。

关键词: 沥青路面, 汽车荷载, 动水压力, 耦合作用, 裂纹扩展, 有限元分析

CLC Number:

U414.75

Wu Guoxiong，Tan Dongjie，Yuan Chuanmin. Analysis of Crack Growth on the Understratum of Asphalt Surface under Coupling Effect of Vehicle Load and Seepage Pressure[J]. Journal of Chongqing Jiaotong University(Natural Science), 2012, 31(5): 962-965.

吴国雄，谭栋杰，袁传泯. 荷载与渗压耦合作用下沥青面层层底裂纹扩展分析[J]. 重庆交通大学学报（自然科学版）, 2012, 31(5): 962-965.

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Analysis of Crack Growth on the Understratum of Asphalt Surface under Coupling Effect of Vehicle Load and Seepage Pressure

荷载与渗压耦合作用下沥青面层层底裂纹扩展分析

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