沥青路面粘结混凝土覆盖层的有效等效线性温度梯度预测

IF 1.5 4区 工程技术 Q3 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS
Charles A. Donnelly, Sushobhan Sen, John W. DeSantis, Julie M. Vandenbossche
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引用次数: 0

摘要

目的 时变等效线性温度梯度(ELTG)对断层的发展有很大影响,因此必须在路面设计中加以考虑。然而,在力学-经验(ME)BCOA 设计中评估 ELTG 非常耗时。使用有效 ELTG(EELTG)是计算 ELTG 的有效替代方法。在这项研究中,针对尺寸为 3 米或更大的面板,开发了一种快速评估 BCOA 中断层的 EELTG 模型,其断层对 ELTG 非常敏感。设计/方法/途径为美国大陆 169 个地点的 144 个 BCOA 生成了 EELTG 响应数据库,用于开发一系列预测模型。评估了三种方法:多元线性回归 (MLR)、人工神经网络 (ANN) 和多基因遗传编程 (MGGP)。结果表明,人工神经网络的准确率最高,在验证数据集上的 R2 为 0.90。MLR 和 MGGP 模型的 R2 分别为 0.73 和 0.71。不过,与人工智能模型相比,这些模型的自由参数要少得多。本研究中进行的模型比较突出表明,研究人员需要考虑模型的复杂性,以便其直接实施是可行的。 原创性/价值本研究为 BCOA 建立了一个快速 EELTG 预测模型,该模型可纳入现有的故障模型框架。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Prediction of effective equivalent linear temperature gradients in bonded concrete overlays of asphalt pavements

Purpose

The time-varying equivalent linear temperature gradient (ELTG) significantly affects the development of faulting and must therefore be accounted for in pavement design. The same is true for faulting of bonded concrete overlays of asphalt (BCOA) with slabs larger than 3 x 3 m. However, the evaluation of ELTG in Mechanistic-Empirical (ME) BCOA design is highly time-consuming. The use of an effective ELTG (EELTG) is an efficient alternative to calculating ELTG. In this study, a model to quickly evaluate EELTG was developed for faulting in BCOA for panels 3 m or longer in size, whose faulting is sensitive to ELTG.

Design/methodology/approach

A database of EELTG responses was generated for 144 BCOAs at 169 locations throughout the continental United States, which was used to develop a series of prediction models. Three methods were evaluated: multiple linear regression (MLR), artificial neural networks (ANNs), and multi-gene genetic programming (MGGP). The performance of each method was compared, considering both accuracy and model complexity.

Findings

It was shown that ANNs display the highest accuracy, with an R2 of 0.90 on the validation dataset. MLR and MGGP models achieved R2 of 0.73 and 0.71, respectively. However, these models consisted of far fewer free parameters as compared to the ANNs. The model comparison performed in this study highlights the need for researchers to consider the complexity of models so that their direct implementation is feasible.

Originality/value

This research produced a rapid EELTG prediction model for BCOAs that can be incorporated into the existing faulting model framework.

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来源期刊
Engineering Computations
Engineering Computations 工程技术-工程:综合
CiteScore
3.40
自引率
6.20%
发文量
61
审稿时长
5 months
期刊介绍: The journal presents its readers with broad coverage across all branches of engineering and science of the latest development and application of new solution algorithms, innovative numerical methods and/or solution techniques directed at the utilization of computational methods in engineering analysis, engineering design and practice. For more information visit: http://www.emeraldgrouppublishing.com/ec.htm
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