Influence of Nonlinear Analysis Technology on Damage Analysis of Asphalt Pavement Structure

IF 0.6 4区 工程技术 Q4 ENGINEERING, CIVIL
Mian Zhang, Xin Jiang, Yanjun Qiu
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引用次数: 0

Abstract

As a means of predicting the damage pattern and design life of asphalt pavement structures, the reliability of damage analysis is highly dependent on the calculation accuracy of the pavement mechanical responses under wheel load. The nonlinear analysis, on its part, can practically describe the stress dependence of the modulus of granular materials and fine-grained soils, so that the mechanical responses of the wheel-loaded asphalt pavement structure can be obtained more accurately. Therefore, the correct application of nonlinear analysis technology is essential to obtain reliable damage analysis results. For this reason, computer program KENLAYER was utilized to explore the effects of stress adjustment methods and core parameters of nonlinear iterative analysis on the damage analysis results. According to the calculation results, this paper explains the reasons why the stress adjustment Methods 2 and 3 are not applicable to the structural analysis of pavements containing nonlinear granular materials in the case of thin surface layers, illustrates the effects of improper selection of the adjustment methods and each iteration parameter on the dominant damage pattern, finds out the reasons for unreliable calculation results due to improper selection of the iteration parameters, and makes corresponding suggestions for carrying out damage analysis accurately.
非线性分析技术对沥青路面结构损伤分析的影响
作为预测沥青路面结构损伤形态和设计寿命的一种手段,损伤分析的可靠性在很大程度上取决于车轮荷载作用下路面力学响应的计算精度。非线性分析可以较实际地描述颗粒材料和细粒土的模量与应力的关系,从而更准确地得到轮载沥青路面结构的力学响应。因此,正确应用非线性分析技术对获得可靠的损伤分析结果至关重要。为此,利用计算机程序KENLAYER,探讨应力调整方法和非线性迭代分析核心参数对损伤分析结果的影响。根据计算结果,说明了应力调整方法2和3不适用于薄面层含非线性颗粒材料路面结构分析的原因,说明了调整方法和各迭代参数选择不当对主导损伤模式的影响,找出了迭代参数选择不当导致计算结果不可靠的原因。并对准确进行损伤分析提出了相应的建议。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Baltic Journal of Road and Bridge Engineering
Baltic Journal of Road and Bridge Engineering 工程技术-工程:土木
CiteScore
2.10
自引率
9.10%
发文量
25
审稿时长
>12 weeks
期刊介绍: THE JOURNAL IS DESIGNED FOR PUBLISHING PAPERS CONCERNING THE FOLLOWING AREAS OF RESEARCH: road and bridge research and design, road construction materials and technologies, bridge construction materials and technologies, road and bridge repair, road and bridge maintenance, traffic safety, road and bridge information technologies, environmental issues, road climatology, low-volume roads, normative documentation, quality management and assurance, road infrastructure and its assessment, asset management, road and bridge construction financing, specialist pre-service and in-service training;
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