| 沥青路面剪应力粘弹性响应分析 |
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| 引用本文： | 赵延庆,周长红,陈静云.沥青路面剪应力粘弹性响应分析[J].湖南大学学报(自然科学版),2009,36(10). |
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| 作者姓名： | 赵延庆 周长红 陈静云 |
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| 作者单位： | 1. 大连理工大学,交通运输系,辽宁大连,116024
2. 大连理工大学,土木水利学院,辽宁大连,116024 |
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| 基金项目： | 国家自然科学基金资助项目，交通部西部交通科技建设项目 |
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| 摘 要： | 对典型沥青路面结构建立了粘弹性三维有限元模型,分析了半正弦荷载作用下路面结构内剪应力粘弹性响应的变化规律,并研究了温度、深度等因素对剪应力的影响.结果表明在半正弦荷载作用的末期,路面结构承受的剪应力由正向变为反向,在循环荷载作用下,路面结构承受正向和反向剪应力的重复作用,剪应力和剪应变随深度先增加后减小.在同一深度,剪应力随温度的增加而减小,但剪应变随温度的增加而增加.
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| 关 键 词： | 粘弹性三维有限元 永久变形 剪应力分布 响应关键位置 循环荷裁 |
Analysis of the Viscoelastic Responses of Shear Stress in Asphalt Pavements |
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| ZHAO Yan-qing,ZHOU Chang-hong,CHEN Jing-yun.Analysis of the Viscoelastic Responses of Shear Stress in Asphalt Pavements[J].Journal of Hunan University(Naturnal Science),2009,36(10). |
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| Authors: | ZHAO Yan-qing ZHOU Chang-hong CHEN Jing-yun |
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| Institution: | ZHAO Yan-qing1,ZHOU Chang-hong1,CHEN Jing-yun2(1.Department of Transportation Engineering,Dalian Univ of Technology,Dalian,Liaoning 116024,China,2.School of Civil and Hydraulic Engineering,China) |
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| Abstract: | Viscoelastic three-dimensional finite element models were developed for typical asphalt pavements,and viscoelastic shear stresses were calculated for pavements subjected to a haversine load.The effects of temperature and depth on the viscoelastic shear stress were investigated.The results have shown that shear stress changes direction at the end of the haversine load and pavement structures are subjected to repetitive shear stresses with opposite directions under cyclic loading.This phenomenon should be tak... |
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| Keywords: | viscoelastic three-dimensional finite element method permanent deformation shear stress distribution critical position of response cyclic loading |
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