Optimal Pile Arrangement for Minimizing Excess Pore Water Pressure Build-Up

Numerical analysis of pile group in a liquefiable soil was considered to investigate the influence of pile spacing on excess pore pressure distribution and liquefaction potential. The analysis is conducted using a two-dimensional plain strain finite difference program considering a nonlinear constit...

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Bibliographic Details
Main Authors: Barari, Amin, Saadati, Meysam, Ibsen, Lars Bo, Bayat, Mehdi
Format: Other Non-Article Part of Journal/Newspaper
Language:English
Published: American Society of Mechanical Engineers 2013
Subjects:
Numerical analysis
Piles
Liquefiable soil
Dynamic response
Pore pressure
Arctic
Online Access:https://vbn.aau.dk/da/publications/9150fcfc-a26a-46db-a32a-79be39007bbb
http://www.asmeconferences.org/OMAE2013/
Description
Summary:Numerical analysis of pile group in a liquefiable soil was considered to investigate the influence of pile spacing on excess pore pressure distribution and liquefaction potential. The analysis is conducted using a two-dimensional plain strain finite difference program considering a nonlinear constitutive model for sandy soil, strength and stiffness reduction, and pile-soil interaction. The Mohr-Coulomb constitutive model coupled with Byrne pore pressure build-up model have been employed in the analysis. Numerical analysis results show that pile groups have significant influence on the dynamic response of sandy soil as they reduce the amount of excess pore pressure development during seismic shaking and may even prevent liquefaction.

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