Seismic Analysis of Pile-Soil Interaction in Liquefiable Soils via Gap Elements

Recently, design of pile foundation in liquefiable soil has drawn considerable attention because of extensive damage to marine structures, such as bridges and wharves, which occurred in earthquakes. One of the major factors which governs the safe design of pile foundations is the soil-pile interaction, which itself can be affected by nonlinearities such as pile yielding, gapping, and soil recompression. After running a fully coupled dynamic analysis in a finite difference program (FLAC-2D), gapping effects on pile-soil interaction are evaluated here. Pore pressure generation, liquefaction and energy dissipation are captured in a developed numerical model. The model and the process of computation have been verified with centrifuge test data. A number of analyses are conducted in two conditions - with and without gap formation - for a wide range of frequencies to evaluate the effect of interface nonlinearities. It is observed that consideration of gapping may result in striking changes in pile internal forces and critical sections as well as excess pore water pressures in the vicinity of a pile.

• Record URL:
  https://doi.org/10.1061/9780784413425.033
• Availability:
  • Find a library where document is available. Order URL: http://ascelibrary.org/doi/book/10.1061/9780784413425
• 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:
  • Ghasemi, Golara
  • Barari, Amin
  • Choobbasti, Asskar Janalizadeh
• 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 323-332
• Monograph Title: Advances in Soil Dynamics and Foundation Engineering

Subject/Index Terms

• TRT Terms: Earthquake resistant design; Foundations; Liquefaction; Offshore structures; Pore pressure; Soil structure interaction; Support piles
• Subject Areas: Bridges and other structures; Design; Geotechnology; Highways; Marine Transportation; I24: Design of Bridges and Retaining Walls; I42: Soil Mechanics;

Filing Info

• Accession Number: 01528446
• Record Type: Publication
• ISBN: 9780784413425
• Files: TRIS, ASCE
• Created Date: Jun 20 2014 9:20AM