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首页> 外文期刊>Journal of Transportation Engineering >Geogrid-Reinforced Low-Volume Flexible Pavements: Pavement Response and Geogrid Optimal Location
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Geogrid-Reinforced Low-Volume Flexible Pavements: Pavement Response and Geogrid Optimal Location

机译：土工格栅加筋的低体积柔性路面：路面响应和土工格栅的最佳位置

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摘要

This article discusses the geogrid's potential to reduce granular base shear flow. Researchers have previously acknowledged the geogrid's potential to enhance the performance of roadways, but this study goes further to (1) investigate the effectiveness of a geogrid when it is used to reinforce low-volume conventional flexible pavements constructed on low-strength subgrade and (2) to specify the optimal location for installing a geogrid in a low-volume pavement system. To quantify the effectiveness of a geogrid in flexible pavements, nine low-volume pavement design sections were constructed at the University of Illinois Advanced Transportation Research and Engineering Laboratory (ATREL). A total of 173 instruments were embedded in the pavement layers during construction to measure pavement responses. The test sections were then loaded using an accelerated loading system, and the pavements' responses to conventional dual-tire loading were measured. This paper reveals how various pavement designs responded when exposed to the same loading conditions, specifically that the geogrid contribution to enhancing low-volume pavements is through reducing the longitudinal and transverse shear deformation in unbound layers. The study also determined the optimal location for installing geogrid in pavements.
机译：本文讨论了土工格栅降低颗粒状基础剪切流的潜力。研究人员先前已经认识到土工格栅在增强道路性能方面的潜力，但是这项研究进一步进行到（1）研究土工格栅在用于加固低强度路基上建造的低体积常规柔性路面时的有效性，以及（2） ），以指定在小体积路面系统中安装土工格栅的最佳位置。为了量化土工格栅在柔性路面中的有效性，伊利诺伊大学高级交通研究与工程实验室（ATREL）建造了9个小体积路面设计段。在施工期间，总共173台仪器被嵌入路面层中，以测量路面响应。然后使用加速加载系统加载测试部分，并测量人行道对常规双轮胎加载的响应。本文揭示了各种路面设计在相同的载荷条件下如何响应，特别是土工格栅对增强小体积路面的贡献是通过减少未粘结层的纵向和横向剪切变形。研究还确定了在人行道上安装土工格栅的最佳位置。

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  • 来源
    《Journal of Transportation Engineering》 |2012年第9期|1083-1090|共8页
  • 作者

    Imad L. Al-Qadi; Samer H. Dessouky; Jayhyun Kwon; Erol Tutumluer;

  • 作者单位

    Illinois Center for Transportation Dept. of Civil and Environmental Engineering, Univ. of Illinois at Urbana-Champaign, 205 N. Mathews Ave., MC-250, Urbana, IL 61801;

    Dept. of Civil and Environmental Engineering, Univ. of Texas at San Antonio, BSE Bldg. 1.322, One UTSA Circle, San Antonio, TX 78429;

    Dept. of Civil and Environmental Engineering, Univ. of Illinois at Urbana-Champaign, 205 N. Mathews Ave., MC-250, Urbana, IL 61801;

    Dept. of Civil and Environmental Engineering, Univ. of Illinois at Urbana-Champaign, 205 N. Mathews Ave., MC-250, Urbana, IL 61801;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    geogrid; full-scale tests; flexible pavements; instrumentation; unbound layer shear;

    机译：土工格栅全面测试;柔性路面;仪器仪表未结合层剪切;

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