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Volume 37 Issue 7
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SHANGGUAN Shi-qing, YANG Min, CHEN Fei, GUO Jun-dong, ZHANG Jun-feng. Interaction of reinforced cushion and pile-soil system in embankments based on principle of minimum potential energy[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(7): 1264-1270. DOI: 10.11779/CJGE201507012
Citation: SHANGGUAN Shi-qing, YANG Min, CHEN Fei, GUO Jun-dong, ZHANG Jun-feng. Interaction of reinforced cushion and pile-soil system in embankments based on principle of minimum potential energy[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(7): 1264-1270. DOI: 10.11779/CJGE201507012
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Interaction of reinforced cushion and pile-soil system in embankments based on principle of minimum potential energy

  • 1. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 2. East China Electric Power Design Institute, Shanghai 200063, China; 3. Tongji Qimstar Science and Technology Development Co., Ltd., Shanghai 200092, China

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  • Received Date: June 30, 2014
  • Published Date: July 19, 2015
    Graphical Abstract
    • Abstract
  • The bearing mechanism of piled embankments is complex as it involves the interaction of piles, soil columns, sand cushions and reinforced geogrids, and its simplified calculation method for layered soils still lacks researches. A mathematical model is proposed for a generalized pile-soil model with geogrids. Considering the potential energy generated by pile-soil load transfer and geotextile tensile, the potential energy equations for the whole system are derived and discreted. An unconstrained nonlinear mathematical optimization model is established, with the potential energy equation as an objective function. The minimum value of the total potential energy equation is obtained by a descent iterative algorithm, and in this way the deformations of piles, soils and sand cushions in the vertical direction are solved. The mathematical model for piled embankment and the solving method are validated through an example without geogrid. The effect of the geogrid interaction is discussed in another engineering example.
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    • References (13)
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