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首页> 外文会议>International Conference on Civil, Architectural and Hydraulic Engineering >Analysis on void beneath curling slab in rigid base cement concrete pavement and fatigue life prediction
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Analysis on void beneath curling slab in rigid base cement concrete pavement and fatigue life prediction

机译：刚性基层水泥混凝土路面下卷曲板坯的空隙分析及疲劳寿命预测

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The damages in two rigid base cement concrete pavement were investigated. The data analysis suggests that the void beneath curling slab resulting from the temperature gradient changing leads to pavement damages. With the benefit of the pavement curling structure numerical model established in this article, the void changing law beneath curling slab and loading stress were analyzed. The loading stress level increases dramatically due to void occurring beneath curling slab. The calculation method of loading stress in the curling slab was given. The fatigue life analysis further reveals that the void beneath curling slab caused by temperature gradient changes is the fundamental reason for the decreasing of the service life of cement concrete pavement. The service life of investigating section were predicted and analyzed according to the fatigue life prediction model established in this article and the survey data.
机译：研究了两个刚性基层混凝土路面的损坏。数据分析表明，由温度梯度改变产生的卷曲板下方的空隙导致路面损坏。在本文中建立的路面卷曲结构数值模型的益处，分析了卷曲板块下方的空隙变化法和负载应力。由于在卷曲板下面发生空隙，负载应力水平显着增加。给出了卷曲板中加载应力的计算方法。疲劳寿命分析进一步揭示了由温度梯度变化引起的卷曲板块下方的空隙是降低水泥混凝土路面使用寿命的基本原因。根据本文中建立的疲劳寿命预测模型和调查数据，预测和分析了调查部分的使用寿命。

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