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首页> 外文期刊>Advances in civil engineering >Asphalt Pavement Mechanical Response of Accelerated Pavement Testing in Single-Axle and Dual-Axle Loading Modes
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Asphalt Pavement Mechanical Response of Accelerated Pavement Testing in Single-Axle and Dual-Axle Loading Modes

机译:单轴和双轴加载模式下加速路面测试的沥青路面机械响应

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摘要

The objective of this study is to evaluate the influence of moving loads on the asphalt pavement in response to single-axle and dual-axle loading modes using the full-scale accelerated pavement testing (APT) facility from Shandong Jiaotong University. First, a test lane of pavement with four structures is constructed. Eleven strain sensors and four pressure cells are embedded at different depths and positions. Secondly, a research on the strain and stress in single-axle and dual-axle loading modes is conducted. Finally, the time accumulation of strain and stress is defined to describe the degree of pavement damage. The study reaches the following conclusions: (1) the strain reversal is induced as the wheels pass through the pavement, and the stress is always a positive value. (2) Both the strain and the stress increase as the loading increases regardless of the loading modes. (3) Comparing the two loading modes at the same velocity and loading, the horizontal tensile strain peak, the horizontal compressive strain peak, and the stress peak are all greater in the single-axle loading mode. But the degree of pavement damage is greater in the dual-axle loading mode based on the points of the time accumulations of strain and stress of each pass.
机译:这项研究的目的是使用山东交通大学的全尺寸加速路面试验(APT)设施,评估响应单轴和双轴荷载模式的移动荷载对沥青路面的影响。首先,构建具有四个结构的路面测试道。十一个应变传感器和四个压力传感器分别嵌入不同的深度和位置。其次,对单轴和双轴加载模式下的应变和应力进行了研究。最后,定义了应变和应力的时间累积,以描述路面损坏的程度。研究得出以下结论:(1)车轮通过人行道时引起应变逆转,应力始终为正值。 (2)无论载荷模式如何,应变和应力都随载荷的增加而增加。 (3)比较相同速度和相同载荷下的两种加载方式,在单轴加载方式下,水平拉伸应变峰值,水平压缩应变峰值和应力峰值均较大。但是,根据双程加载的时间和应力累积点,在双轴加载模式下路面损坏程度更大。

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  • 来源
    《Advances in civil engineering》 |2019年第5期|3129485.1-3129485.11|共11页
  • 作者单位

    Shandong Jiaotong Univ Sch Mech Engn Jinan 250023 Shandong Peoples R China;

    Shandong Jiaotong Univ Sch Civil Engn Jinan 250023 Shandong Peoples R China;

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  • 正文语种 eng
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