›› 2010, Vol. 31 ›› Issue (3): 911-917.

• Geotechnical Engineering • Previous Articles     Next Articles

Study of calculation theory for retaining structure with prestressed double-row piles and its engineering application

QI Zhi-gang1，WANG Cui-ying2，WANG Jia-yang3   

  1. 1. College of Civil Engineering, Chongqing University, Chongqing 400045, China; 2. School of Civil Engineering and Architecture, Hubei University of Technology, Wuhan 430068, China; 3. Wuhan Branch, Shenzhen JBD Steel Structure Consultancy Co. Ltd., Wuhan 430070, China
  • Received:2008-10-17 Online:2010-03-10 Published:2010-03-31

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Abstract:

Based on the previous study and comparative analysis of two current calculating models, a new calculating model of prestressed double-row piles is presented, considering the double-row piles and soil between piles as dimensional equivalent truss and pile end as elastic restraint and meanwhile adopting the method of exerting vertical prestress on back-row pile to balance pile-side soil pressure and improve the mechanical performance of front-row and back-row piles. The calculating models of dimensional equivalent truss and the method of exerting vertical prestress on back-row pile are essentially verified by comparative analysis of three calculating models and FEM programme. Combining with engineering example, the key factors influencing prestressed double-row piles are analyzed. Both the calculating analysis and the engineering application show that a satisfactory result can be obtained with spatial equivalent truss and the method of exerting vertical prestress on back-row pile.

Key words: double-row retaining piles, vertical prestress, spatial equivalent truss, calculating models

CLC Number: 

  • TU 473
[1] YANG Guang-qing , DU Qun-le , ZHANG Bao-jian，. Study on techniques of applying vertically prestressed anchor retaining wall to treat landslide [J]. , 2005, 26(S2): 155-158.
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