Investigation of tire contact stress distributions on pavement response
Investigation of tire contact stress distributions on pavement response
复制标题
DOI：
10.1061/(asce)0733-947x(2002)128:2(136
复制
发表时间：
2002-03-01
影响因子：
--
通讯作者：
Sebaaly, PE
中科院分区：
文献类型：
--
作者：
Siddharthan, RV;Krishnamenon, N;Sebaaly, PE
本文记录了许多重要的路面响应参数产生的有限层分析模型，三维移动荷载分析，在各种荷载条件下。报告的负载条件包括两种类型的轮胎（传统和宽基地）和不同的接触应力分布（均匀和不均匀）。从这项研究中产生的数据显示，有一个显着的差异与均匀（传统假设）和非均匀接触轮胎路面应力分布计算的响应。这个差异在6%和30%之间变化，取决于负载条件。除沥青混凝土层底存在拉应变的情况外，非均匀应力分布下的反应均较低。这表明，使用传统的荷载分布是保守的，至少在路面车辙的估计的情况下。车速对所有路面响应参数均有显著影响，且其影响与大量现场试验结果一致。研究中提供的路面响应数据库可用于比较各种条件下的路面性能-例如，薄路面与厚路面、宽基轮胎与传统轮胎、车辆低速与高速等。此外，研究表明，包括接触剪应力，（纵向和横向）没有显着影响任何重要的路面响应参数。
This paper documents many important pavement response parameters generated from the finite-layer analytical model, 3D-Moving Load Analysis, under a variety of loading conditions. The loading conditions reported include two types of tires (conventional and wide base) and different contact stress distributions (uniform and nonuniform). The data generated from this study reveal that there is a significant difference between the responses computed with uniform (conventional assumption) and nonuniform contact tire-pavement stress distributions. This difference varies between 6 and 30%, depending on the loading conditions. Except in the case of tensile strain at the bottom of the asphalt concrete layer, the responses computed with the nonuniform stress distribution are lower. This indicates that the use of conventional load distributions is conservative, at least in the case of the estimation of pavement rutting. Vehicle speed showed significant impact on all pavement response parameters, and its influence was consistent with those measured in many field tests. The database of pavement responses presented in the study can be used to compare the performance of pavements under a variety of conditions-for example, thin versus thick pavements, wide-base versus conventional tires, slow versus high speed of the vehicle, and so on. Furthermore, the study reveals that the inclusion of contact shear stresses (longitudinal and transverse) did not significantly influence any of the important pavement response parameters.