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PDF(646 KB)
PDF(646 KB)
长寿命路面疲劳寿命预测的频域分析方法
Fatigue Life Prediction of Long-Life Pavement Using Frequency-Domain Analysis
笔者分别从沥青路面和水泥混凝土路面两个方面分析了路面疲劳寿命预测的相关方法。重点对疲劳寿命预测的频域分析方法进行了较为详细的分析，结合车辆–道路耦合振动系统模型，对路面不平整引起的车辆与道路之间的随机振动进行了分析，指出车辆–道路耦合振动的随机功率谱密度是进行路面疲劳寿命预测的一种手段和方法，并提出了相应的预测步骤，旨在为长寿命路面的设计和性能评价提供参考。
This paper analyses a pavement fatigue life prediction method for asphalt and cement concrete pavements. A detailed frequency domain analysis of fatigue life was carried out. Using the vehicle-road coupled vibration system model, the random vibration between the vehicle and road caused by road roughness was analyzed. In this paper, it is proposed that the random power spectral density of the vehicle-road coupling vibration is a useful tool to predict the fatigue life of pavements, and corresponding prediction procedures are proposed, which are aimed at providing some reference for long-life pavement design and performance evaluation.
long-life pavement / fatigue life prediction / random vibration / power spectral density
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