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首页> 外文期刊>Journal of Infrastructure Systems >Simple Model for Structural Evaluation of Asphalt Concrete Pavements at the Network Level
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Simple Model for Structural Evaluation of Asphalt Concrete Pavements at the Network Level

机译：网络一级沥青混凝土路面结构评估的简单模型

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摘要

Evaluation of the structural conditions and estimation of the remaining structural life of each pavement section are important considerations for prioritizing the maintenance needs of any highway network. Many highway agencies, where equipment for evaluation is not available and maintenance funds are limited, may not be able to carry out a detailed structural evaluation on individual pavement sections. An attempt has been made in this paper to develop a simple and cost effective model for structural evaluation of existing pavements. The important features of the model are (1) it can be executed with minimal amount of data, (2) the model is simple and does not require use of any costly equipment, and (3) the output of the model can be directly used for prioritization of maintenance needs at the network level. Two such models have been developed. The models are statistical and are derived from the long term pavement performance (LTPP) database developed by the U.S. Department of Transportation. The models have been validated and their predictions for remaining structural life (RSL) have been compared with the RSL obtained using the fatigue and rutting distress models of the Asphalt Institute. The results indicate that the proposed models are capable of predicting the RSL of existing pavements with reasonable accuracy and consistency, given that their primary use is in evaluating pavement structural conditions at the network level and for the purpose of prioritizing pavement sections for maintenance purposes.
机译：评估结构条件和估算每个人行道的剩余结构寿命是优先考虑任何公路网维护需求的重要考虑因素。许多没有评估设备且维修资金有限的公路机构，可能无法对各个人行道进行详细的结构评估。本文已尝试开发一种简单且具有成本效益的模型，用于现有路面的结构评估。该模型的重要特征是：（1）可以用最少的数据执行该模型；（2）该模型简单且不需要使用任何昂贵的设备；（3）该模型的输出可以直接使用在网络级别确定维护需求的优先级。已经开发了两个这样的模型。这些模型具有统计意义，是从美国运输部开发的长期路面性能（LTPP）数据库中得出的。这些模型已经过验证，并且将其剩余结构寿命（RSL）的预测与使用沥青研究所的疲劳和车辙危险模型得到的RSL进行了比较。结果表明，所提出的模型能够以合理的准确性和一致性来预测现有路面的RSL，因为它们的主要用途是在网络级别评估路面结构状况，并且出于维护目的优先考虑路面截面的目的。

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