Session 01: Case Histories of Unexpected Behavior and Failure of Shallow, Deep and Other Foundations
Location
Arlington, Virginia
Date
13 Aug 2008, 5:15pm - 6:45pm
Abstract
This paper presents a numerical analysis of pile driving for tapered piles using FLAC software. The approach involves idealization of pile-soil system in pile drivability. The pile is assumed to be vertical and have elastic and linear behaviour. The soil is assumed to be elasto-plastic material which obeys the Mohr-Coulomb failure criterion. To allow slip between the pile and the soil in pile driving, interface elements are used at the pile-soil borders along the shaft and the toe. Quiet boundaries are considered in the lateral and vertical directions for the soil to absorb traveling waves. The obtained numerical results are compared with experimental results, leading to a satisfactory agreement. It will be shown that with increasing the angle of taper, the driving stresses decrease and the permanent pile toe settlement increases. These are interesting phenomena in pile driving and are on the safe side for driven piles.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
6th Conference of the International Conference on Case Histories in Geotechnical Engineering
Publisher
Missouri University of Science and Technology
Document Version
Final Version
Rights
© 2008 Missouri University of Science and Technology, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Ghazavi, Mahmoud and Tavassoli, Omid, "Numerical Analysis of Drivability of Non-Uniform Piles" (2008). International Conference on Case Histories in Geotechnical Engineering. 22.
https://scholarsmine.mst.edu/icchge/6icchge/session_01/22
Numerical Analysis of Drivability of Non-Uniform Piles
Arlington, Virginia
This paper presents a numerical analysis of pile driving for tapered piles using FLAC software. The approach involves idealization of pile-soil system in pile drivability. The pile is assumed to be vertical and have elastic and linear behaviour. The soil is assumed to be elasto-plastic material which obeys the Mohr-Coulomb failure criterion. To allow slip between the pile and the soil in pile driving, interface elements are used at the pile-soil borders along the shaft and the toe. Quiet boundaries are considered in the lateral and vertical directions for the soil to absorb traveling waves. The obtained numerical results are compared with experimental results, leading to a satisfactory agreement. It will be shown that with increasing the angle of taper, the driving stresses decrease and the permanent pile toe settlement increases. These are interesting phenomena in pile driving and are on the safe side for driven piles.
