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Article Navigation >  Journal of Traffic and Transportation Engineering  > 2014  >  14(6): 35-43
HUANG Bing, GENG Jian-yu, JIANG Xin, LIANG Duo-wei, QIU Yan-jun. Numerical simulation of embankment on sloped weak ground reinforced by pile-net structure with collar beam[J]. Journal of Traffic and Transportation Engineering, 2014, 14(6): 35-43.
Citation: HUANG Bing, GENG Jian-yu, JIANG Xin, LIANG Duo-wei, QIU Yan-jun. Numerical simulation of embankment on sloped weak ground reinforced by pile-net structure with collar beam[J]. Journal of Traffic and Transportation Engineering, 2014, 14(6): 35-43.
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Numerical simulation of embankment on sloped weak ground reinforced by pile-net structure with collar beam

  • 1.

    School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, China

  • 2.

    Highway Engineering Key Laboratory of Sichuan Province, Southwest Jiaotong University, Chengdu 610031, Sichuan, China

  • 3.

    Key Laboratory of High-Speed Railway Engineering of Ministry of Education, Southwest Jiaotong University, Chengdu 610031, Sichuan, China

  • 4.

    Sichuan Chengdenan Expressway Limited Liability Company, Chengdu 610041, Sichuan, China

More Information
  • Author Bio:

    HUANG Bing (1969-), male, senior engineer, doctoral student, +86-28-66366340, huangbingzjz@sina.com

    QIU Yan-jun (1966-), male, professor, PhD, +86-28-66366340, publicqiu@vip.163.coma

  • Received Date: 2014-06-18
  • Publish Date: 2014-12-25
    Abstract
  • To investigate the working mechanism of pile-net structure with collar beam applied in the embankment on sloped weak ground, the finite element model of embankment on sloped weak ground reinforced by pile-net structure with collar beam was established.Some mechanical responses with or without reinforcement, including potential slip surface behaviors, stability safety factors, geogrid tensions, embankment top surface settlements and ground lateral displacements, were compared.The sensitivities of core design parameters, such as collar beam location type, elastic modulus and thickness, were analyzed.Study result shows that the pile-net structure with collar beam can decrease the embankment maximum settlement, differential settlement and ground lateral deformation by 88.7%, 90.3% and 96.6%, respectively, and improve the stability safety factor by 26.2%.Arranging the collar beam crossbar is beneficial toimprove the embankment stability safety and reduce the ground lateral displacement.Decreasing the elastic modulus of collar beam appropriately will not cause relatively large unfavorable effect, and too thin collar beam is not suitable.

     

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