ABSTRACT

The methodology behind the current mechanistic-empirical design of jointed concrete pavements (JCP) is not very sensitive to the properties of the foundation layers of a pavement system. For this reason, it is essential to develop an analysis tool that is capable of accurately capturing the influence of these supporting layers. To address the limitations of utilising simplified models for the prediction of concrete pavement responses, researchers at The University of Texas at El Paso have developed a finite element modelling tool (called Rigid Pavement Analysis System, RPAS) that incorporates a three-dimensional layered foundation. This paper presents the results of the verification of the 3-D foundation model in RPAS and the validation of this analysis tool with field and accelerated testing data. Response data from a standard truck load and a falling weight deflectometer from pavement sections at the MnROAD pavement testing facility were used to evaluate the performance of RPAS in modelling highway pavements. Response data from accelerated pavement testing on instrumented pavement sections at the National Airport Pavement Test Facility (NAPTF) were also used to evaluate the capabilities of RPAS in modelling heavy aircraft traffic. The results obtained from RPAS determined that the field responses were a good measure to validate the reliability of the analysis tool.

摘要

当前连接混凝土路面 (JCP) 的机械经验设计背后的方法对路面系统的基础层的特性不是很敏感。因此，必须开发一种能够准确捕捉这些支撑层影响的分析工具。为了解决使用简化模型预测混凝土路面响应的局限性，德克萨斯大学埃尔帕索分校的研究人员开发了一种有限元建模工具（称为刚性路面分析系统，RPAS），其中包含一个三维分层基础。本文介绍了在 RPAS 中验证 3-D 基础模型的结果，以及使用现场和加速测试数据验证该分析工具的结果。来自标准卡车负载的响应数据和来自 MnROAD 路面测试设施的路面部分的落锤挠度计的响应数据用于评估 RPAS 在模拟公路路面方面的性能。来自国家机场路面测试设施 (NAPTF) 仪表路面部分加速路面测试的响应数据也用于评估 RPAS 在模拟重型飞机交通方面的能力。从 RPAS 获得的结果确定，现场响应是验证分析工具可靠性的良好措施。来自国家机场路面测试设施 (NAPTF) 仪表路面部分加速路面测试的响应数据也用于评估 RPAS 在模拟重型飞机交通方面的能力。从 RPAS 获得的结果确定，现场响应是验证分析工具可靠性的良好措施。来自国家机场路面测试设施 (NAPTF) 仪表路面部分加速路面测试的响应数据也用于评估 RPAS 在模拟重型飞机交通方面的能力。从 RPAS 获得的结果确定，现场响应是验证分析工具可靠性的良好措施。