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首页> 外文期刊>Construction and Building Materials >Comparative analysis of strain-pulse-based loading frequencies for three types of asphalt pavements via field tests with moving truck axle loading
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Comparative analysis of strain-pulse-based loading frequencies for three types of asphalt pavements via field tests with moving truck axle loading

机译：通过现场测试与移动卡车轴载荷对三种沥青路面的应变脉冲加载频率的比较分析

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摘要

The asphalt-based pavement performance evaluation includes the derivation of the dynamic moduli and loading frequencies of pavement layers under various traffic- and climatic-induced loading conditions. The traffic-induced strain pulses and loading frequencies of commonly used (semi-rigid, flexible, and steel deck) asphalt pavements were experimentally determined by vehicular loading field tests with embedded strain gauges for different axle loads, motion speeds, and temperatures. It was found that the axle load values had no noticeable effect on the pavement loading frequency, which was mainly controlled by the vehicular motion speed. The transverse frequencies were found to be higher than longitudinal ones, while the distributions of loading frequencies by pavement depth differed for three pavements under study. The frequency values at temperatures over 35 degrees C exceeded those at lower temperatures, while in the temperature range from 4 to 31 degrees C, the motion speed vs. loading frequency relations for three pavements were nearly identical. The loading frequency f increased approximately linearly with the motion speed V, according to the unified fitting equation for three types of pavements under study, namely f = 0.127 x V. This unified equation was further proved valid to predict the dynamic modulus properties of field asphalt pavement layers. Moreover, several previous prediction models for loading frequency, including the Brown model, Ullidtz model, MEPDG procedure and Ulloa model, were compared to the results in this study. These previous models were found to overestimate the loading frequencies within the asphalt layer. The prediction errors of the Brown model and the Ullidtz model were pronounced. The loading frequencies calculated by the MEPDG procedure and the Ulloa model need to be modified by dividing 2.8 and 1.7, respectively. (C) 2020 Elsevier Ltd. All rights reserved.
机译：基于沥青的路面性能评估包括在各种交通和气候诱导的负载条件下导流路面层的动态模量和装载频率。常用的（半刚性，柔性和钢甲板）沥青路面的交通诱导的应变脉冲和装载频率通过车辆载荷场试验实验，该嵌入式应变仪的用于不同的轴载荷，运动速度和温度。结果发现，轴载值对路面负载频率没有明显的影响，主要由车辆运动速度控制。发现横频频率高于纵向频率，而在研究下，通过路面深度的装载频率的分布不同。在35摄氏度超过35摄氏度的温度下的频率值超过温度下的温度，而在4至31摄氏度的温度范围内，运动速度与三个路面的负载频率关系几乎相同。根据在研究下的三种类型的路面的统一配件方程，加载频率F大致线性增加，即F = 0.127×V.该统一方程进一步证明有效以预测现场沥青的动态模量特性路面层。此外，与该研究的结果相比，将有几个用于加载频率的预测模型，包括棕色模型，ullidtz模型，Mepdg程序和UlloA模型。发现这些以前的模型高估了沥青层内的装载频率。棕色模型和ULLIDTZ模型的预测误差发音。由MEPDG过程计算的加载频率和ULLOA模型分别需要分别划分2.8和1.7来修改。 （c）2020 elestvier有限公司保留所有权利。

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  • 来源
    《Construction and Building Materials》 |2020年第30期|118519.1-118519.13|共13页
  • 作者

    Cheng Huailei; Liu Liping; Sun Lijun; Li Yi; Hu Yue;

  • 作者单位

    Tongji Univ Minist Educ Key Lab Rd & Traff Engn Shanghai 201804 Peoples R China|Hong Kong Polytech Univ Dept Civil & Environm Engn Hung Hom Hong Kong Peoples R China;

    Tongji Univ Minist Educ Key Lab Rd & Traff Engn Shanghai 201804 Peoples R China;

    Tongji Univ Minist Educ Key Lab Rd & Traff Engn Shanghai 201804 Peoples R China;

    Tongji Univ Minist Educ Key Lab Rd & Traff Engn Shanghai 201804 Peoples R China;

    Tongji Univ Minist Educ Key Lab Rd & Traff Engn Shanghai 201804 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Asphalt pavement; Loading frequency; Strain response; Flexible/semi-rigid/steel deck pavements; Moving load; Temperature;

    机译：沥青路面;装载频率;应变响应;柔性/半刚性/钢甲板路面;移动载荷;温度;

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