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Volume 33 Issue 7
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ZHENG Jun-jie, MA Qiang, ZHANG Jun. Calculation of vertical earth pressure on load reduction culverts under embankments by reinforcement[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(7): 1135-1141.
Citation: ZHENG Jun-jie, MA Qiang, ZHANG Jun. Calculation of vertical earth pressure on load reduction culverts under embankments by reinforcement[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(7): 1135-1141.
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Calculation of vertical earth pressure on load reduction culverts under embankments by reinforcement

  • (Institute of Geotechnical and Underground Engineering, Huazhong University of Science andTechnology, Wuhan 430074, China)

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  • Received Date: April 08, 2010
  • Published Date: July 14, 2011
    Graphical Abstract
    • Abstract
  • Based on the collaborative working mechanism of culvert-filling-foundation, the load reduction mechanism of a culvert with reinforcement is analyzed. Mechanical model of the culvert with reinforcement is established through theoretical analysis, and the expression of earth pressure acting on geogrid is derived theoretically. Considering the support effect of filling under the geogrid, the stress and deformation of goegrid are analyzed to derive deflection calculation formula of geogrid under load of filling, and then the pressure acting on the top of the culvert is calculated by force analysis. The calculated results by the presented method are in good agreement with those by finite element methods and the field test results recorded in literatures, especially when the fill is high. Finally, based on the presented method, parametric analyses are performed to study the main factors which affect the pressure on the culvert such as embankment height, modulus of loose fillings on the culvert and stiffness of geogrid.
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    • References (17)
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