Nonlinear three-dimensional analysis of pile group supported columns considering pile cap flexibility

Jinoh Won, Sang Yong Ahn, Sangseom Jeong, Jinhyung Lee, Seo Yong Jang

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)


A numerical method that takes into account the coupling between the rigidities of the piles, the cap, and the column has been developed for analyzing the response of pile group supported columns. Special attention is given to consideration of pile cap flexibility. A load transfer approach using t-z/q-z and p-y curves is used for the analysis of single piles. The finite element technique is used to combine the pile stiffness with the stiffness of the cap and column. The numerical method developed has been verified by comparing the results with other numerical methods for pile groups. Through comparative studies, it has been found that the maximum load on the individual piles in a group is highly influenced by pile cap flexibility. The prediction of the lateral loads and bending moments in the pile cap is much more conservative in the present analysis than in FBPier 3.0 and shows a definitely larger lateral load and bending moment for various cap thicknesses.

Original languageEnglish
Pages (from-to)355-370
Number of pages16
JournalComputers and Geotechnics
Issue number6-7
Publication statusPublished - 2006 Sep

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology
  • Computer Science Applications


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