A Note on Pile Length Optimization of Pile Groups Considering the Non-Linear Behavior of Piles

The use of dissimilar piles below a raft is a relatively innovative concept and can optimize the design of a piled raft. This paper discusses a pile length optimization method. To analyze non-linear behaviour of piles, a "cut-off" method was adopted to limit pile capacity in the integral equation considering linear behaviour of piles. In this method, adjacent non-yielding piles take more loads when some piles start to yield (i.e., reaching their individual ultimate load capacity). A pile-square rigid raft system was analyzed to illustrate the effects of the proposed approach. The analysis showed that the stiffness of the piled raft decreased after considering the load cut-off. The load cut-off procedure could make the distribution of the reactions for short piles more reasonable in terms of their locations and lengths. The optimized design using dissimilar piles would create a more economical solution than the design with uniform piles.

• Record URL:
  https://doi.org/10.1061/9780784413401.006
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780784413401
• Supplemental Notes:
  • © 2014 American Society of Civil Engineers.
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Liang, Fayun
  • Chen, Haibing
  • Song, Zhu
  • Han, Jie
• Conference:
  • Geo-Shanghai 2014
  • Location: Shanghai , China
  • Date: 2014-5-26 to 2014-5-28
• Publication Date: 2014-5

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: pp 57-66
• Monograph Title: Ground Improvement and Geosynthetics

Subject/Index Terms

• TRT Terms: Bearing capacity; Geosynthetics; Load factor; Mat foundations; Mechanics; Optimization; Pile groups; Soil stabilization
• Subject Areas: Bridges and other structures; Geotechnology; Highways; I24: Design of Bridges and Retaining Walls; I42: Soil Mechanics;

Filing Info

• Accession Number: 01529674
• Record Type: Publication
• ISBN: 9780784413401
• Files: TRIS, ASCE
• Created Date: Jun 30 2014 9:44AM