Pavement Strain from Moving Dynamic 3D Load Distribution
Pavement Strain from Moving Dynamic 3D Load Distribution
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DOI：
10.1061/(asce)0733-947x(1998)124:6(557
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发表时间：
1998-11
期刊：
影响因子：
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通讯作者：
R. Siddharthan;Jian Yao;P. Sebaaly
中科院分区：
文献类型：
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作者：
R. Siddharthan;Jian Yao;P. Sebaaly
本文提出了一种基于连续体的有限层方法，并应用于实际交通荷载下路面应变响应的评估。该模型结合了重要的路面响应参数，如动态轮胎-路面荷载变化和相应的复杂接触应力分布（法向和剪切）、车速和粘弹性材料特性。参数化研究的结果，其中两个典型的薄和厚的路面路段受到不同速度移动的交通载荷。作为该方法的一个重要应用，宽基轮胎和双胎轮胎所产生的路面应变响应已经给出。本研究发现，与以往研究相反，轮胎-路面接触剪应力对沥青混凝土底部拉应变的影响不显著。
This paper presents the formulation and the application of a continuum-based finite-layer approach to evaluate pavement strain response under actual traffic loading. The model incorporates important pavement response parameters such as the dynamic tire-pavement load variations and corresponding complex contact stress distributions (normal and shear), vehicle speed, and viscoelastic material characterization. Results of a parametric study in which two typical thin and thick pavement sections were subjected to traffic loading moving at different speeds are included. As an important application of the proposed method, pavement strain responses generated by wide-base and dual tires have been presented. This study reveals that contradictory to the past studies, the impact of tire-pavement contact shear stress on tensile strain at the bottom of asphalt concrete is insignificant.