| 半刚性基层沥青路面U形破坏力学机理分析 |
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| 引用本文： | 刘丽,郝培文.半刚性基层沥青路面U形破坏力学机理分析[J].武汉理工大学学报,2011(1):86-89. |
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| 作者姓名： | 刘丽 郝培文 |
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| 作者单位： | 西安建筑科技大学土木工程学院;西部建筑科技国家重点实验室;长安大学特殊地区公路工程教育部重点实验室; |
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| 基金项目： | 国家西部交通建设科技项目(200531800009); 陕西省重点学科建设专项资金项目(E01004); 西安建筑科技大学青年科技基金(QN0910)和西安建筑科技大学人才科技基金(RC0917) |
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| 摘 要： | 沥青路面层间粘结不足易导致层间滑移病害的发生,U形破坏是纵向层间滑移的典型破坏形式,多发生在车辆频繁加速、减速的长大纵坡路段。以半刚性基层沥青路面U形开裂为研究对象,采用有限元分析软件ABAQUS,计算了模型在荷载作用下的力学响应,分析了应力在路面内的分布规律,结合路面实际破坏现象,揭示了U形破坏产生的力学机理。经过分析得知:纵向拉应力和剪应力的分布规律分别与U形裂缝的底部和两侧位置相吻合,且U形底部开裂是拉应力导致的张开型裂缝,U形的两侧开裂是剪应力导致的剪切型裂缝。
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| 关 键 词： | 道路工程 层间滑移 U形破坏 剪切 ABAQUS |
Mechanical Analysis on U-shaped Cracking of Semi-rigid Base Asphalt Pavement |
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| LIU Li,HAO Pei-wen,.Key Laboratory for Special Area Highway Engineering of Ministry of Education,Chang'an University,Xi'an ,China.Mechanical Analysis on U-shaped Cracking of Semi-rigid Base Asphalt Pavement[J].Journal of Wuhan University of Technology,2011(1):86-89. |
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| Authors: | LIU Li HAO Pei-wen Key Laboratory for Special Area Highway Engineering of Ministry of Education Chang'an University Xi'an China |
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| Affiliation: | LIU Li1,2,HAO Pei-wen3(1.School of Civil Engineering,Xi'an University of Architecture and Technology,Xi'an 710055,China,2.State Key Laboratory of Architecture Science and Technology in West China(XAUAT),3.Key Laboratory for Special Area Highway Engineering of Ministry of Education,Chang'an University,Xi'an 710064,China) |
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| Abstract: | Poor bond between two layers of asphalt pavement is the main cause of slippage failure.U-shaped cracking which often occurring at locations where traffic accelerates and decelerates continually,is the most commonly observed typical problem related to slippage failure between layers.This paper developed a mechanical model of the semi-rigid base asphalt pavement by a finite element program(ABAQUS).The pavement structure mechanical responses under traffic were computed and the regularities of stress distributi... |
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| Keywords: | highway engineering slippage failure U-shaped cracking shear ABAQUS |
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