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Volume 37 Issue zk1
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LÜ Ya-ru, LIU Han-long, WANG Ming-yang, LI Ping. Theoretical analyses of load transfer mechanism for special pile foundations[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(zk1): 212-217. DOI: 10.11779/CJGE2015S1040
Citation: LÜ Ya-ru, LIU Han-long, WANG Ming-yang, LI Ping. Theoretical analyses of load transfer mechanism for special pile foundations[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(zk1): 212-217. DOI: 10.11779/CJGE2015S1040
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Theoretical analyses of load transfer mechanism for special pile foundations

  • 1. State Key Laboratory of Disaster Prevention & Mitigation of Explosion & Impact, PLA University of Science and Technology, Nanjing 210007, China; 2. Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210098; 3. College of Civil Engineering, Chongqing University, Chongqing 400045, China

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  • Received Date: March 25, 2015
  • Published Date: July 24, 2015
    Graphical Abstract
    • Abstract
  • In recent years, the special piles have been focused at home and abroad, including the piles with non-uniform cross-sectional area along shafts and those with special geometrical cross-sections. The load bearing capacity is enhanced for special piles by means of altering the pile geometry. Since many previous studies mainly emphasize on the bearing capacity, the complex fundamental load transfer mechanisms between special piles and their surrounding soil, called geometrical effects, are not well investigated and fully understood. Theoretical solutions are derive through equilibrium analyses for calculating the effective vertical stress, the unit positive (negative) shaft resistance, the total shaft resistance and the axial force (dragload). Those solutions are calibrated by reported large-scale model tests. The vertical shearing mechanisms of special piles are investigated by comparing a circular pile, an H-pile and an X-shaped pile with the same cross-sectional area. The geometrical effects are preliminarily discussed.
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    • References (16)
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