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首页> 外文会议>COTA international conference of transportation professionals >Analysis of Flexural Fatigue Failure and Degradation Reliability of Cement Concrete for Highway Pavements
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Analysis of Flexural Fatigue Failure and Degradation Reliability of Cement Concrete for Highway Pavements

机译：公路路面水泥混凝土弯曲疲劳破坏与降解可靠度分析。

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This paper analyzes the fatigue failure and model degradation reliability of cement concrete for highway pavement. The fatigue test results were investigated and analyzed through the Weibull distribution. The distribution parameters were estimated by several numerical methods. The average parameters were used to incorporate probability distribution into the cumulative process of flexural fatigue damage. A new calculating method of the reliability was proposed. The reliability of concrete in pavement was calculated. The results show that the flexural fatigue life of cement concrete in pavements follows the two-parameter Weibull distribution. The Weibull parameters obtained are close to each other. The dispersion of flexural fatigue life decreased with the increase of applied stress level. The evolution of reliability for concrete in pavement consists of three stages and may correspond to different stages of cracking.
机译：本文分析了高速公路路面水泥混凝土疲劳失效及模型降解可靠性。通过Weibull分布研究并分析了疲劳试验结果。分布参数估计了几种数值方法。使用平均参数将概率分布掺入抗弯疲劳损伤的累积过程中。提出了一种新的可靠性计算方法。计算了路面混凝土的可靠性。结果表明，在路面中水泥混凝土的抗弯疲劳寿命遵循双参数Weibull分布。获得的Weibull参数彼此接近。随着施加应力水平的增加，抗弯疲劳寿命的分散降低。路面混凝土可靠性的演变由三个阶段组成，可以对应于不同裂缝阶段。

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