沥青路面车辙变形的三维粘弹性动力有限元分析
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A 3D Viscoelastoplastic Finite Element Analysis of the Asphalt Pavement Rutting Deformation
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    摘要:

    基于车辆对路面的动力作用,建立路面不平整度引起的汽车动荷载简化模型,通过室内高温蠕变试验获得不同沥青面层材料的粘弹性模型,以弹粘塑性理论、动力学基本理论和有限元方法作为理论基础,采用动力有限元分析方法对沥青路面车辙进行了计算与预估,并分析了车辆轮胎压力、车速、作用时间、路面温度及轴载作用次数对沥青路面车辙深度的影响。通过河北邯郸~长治高速公路实体工程验证表明,采用基于动力有限元方法的车辙理论计算值与实测值误差仅为8%~9.5%,具有较高精度,研究成果为进一步完善车辙计算方法及工程应用提供理论依据。

    Abstract:

    Based on the dynamic action between vehicles and pavement, a simplified model of vehicle dynamic loading caused by surface evenness was established. This research made it possible to find a Asphalt Pavement Rutting Prediction method based on the theory of viscoelastoplasticity which is the basic theory of the dynamics, and finite element method (FEM). Asphalt pavement rutting was calculated and predicted, and the factors influencing rutting were analyzed and calculated. The good agreement between the calculation results and the testing road data indicate that the rutting prediction method is reasonable and reliable.

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何兆益,雷婷,陈洪兴,王国清,候岩峰.沥青路面车辙变形的三维粘弹性动力有限元分析[J].土木与环境工程学报(中英文),2008,30(6):32-36. HE Zhaoyi,LEI Ting,CHEN Hongxing,WANG Guoqing,HOU Yanfeng. A 3D Viscoelastoplastic Finite Element Analysis of the Asphalt Pavement Rutting Deformation[J]. JOURNAL OF CIVIL AND ENVIRONMENTAL ENGINEERING,2008,30(6):32-36.10.11835/j. issn.1674-4764.2008.06.007

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