• ISSN 0258-2724
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Volume 29 Issue 1
Jan.  2016
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Article Contents
Journal of Southwest Jiaotong University  > 2016  >  29(1): 14-21.
LI Tao, JIANG Yonghua, ZHU Lianhua, GUAN Chenlong. A Novel Method for Calculating Stress and Deformation of Supporting Pile Considering Pile-Soil Interaction[J]. Journal of Southwest Jiaotong University, 2016, 29(1): 14-21. doi: 10.3969/j.issn.0258-2724.2016.01.003
Citation: LI Tao, JIANG Yonghua, ZHU Lianhua, GUAN Chenlong. A Novel Method for Calculating Stress and Deformation of Supporting Pile Considering Pile-Soil Interaction[J]. Journal of Southwest Jiaotong University, 2016, 29(1): 14-21. doi: 10.3969/j.issn.0258-2724.2016.01.003
shu

A Novel Method for Calculating Stress and Deformation of Supporting Pile Considering Pile-Soil Interaction

doi: 10.3969/j.issn.0258-2724.2016.01.003
  • Received Date: 13 Nov 2014
  • Publish Date: 25 Jan 2016
    Abstract
  • To study the pile-soil interaction on the internal force and deformation, a novel calculation method for calculating stress and deformation of supporting pile considering pile-soil interaction was proposed. This method treats the pile body above the excavation surface as a finite number of elastomers, the section below the excavation surface as Winker elastic foundation beam, and support structure as two-force elastic rod. The deformation compatibility between supporting pile and inner supporting system is also considered. Based on segmentation coordinate system and elastic beam-on-foundation system, the differential equation of pile deflection considering soil-pile-internal bracing interaction was proposed. By using this method and theoretical values of soil pressure, the lateral displacement and bending moment of supporting pile at different excavation depths were obtained and compared with the standard values and measured values. The results show that the calculated maximum lateral displacement of the supporting pile is 15.2% smaller than that of the standard method, and the calculated maximum bending moment is 26.2% smaller than that of the standard method, both of which are more close to the measured values.

     

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