Location
New York, New York
Date
16 Apr 2004, 1:30pm - 3:30pm
Abstract
Collapse of piled foundations in liquefiable soils has been observed in the majority of the recent strong earthquakes despite the fact that a large margin of safety is employed in their design. This paper critically reviews the current design methods and the underlying mechanism behind them. The current method of pile design under earthquake loading is based on a bending mechanism where the inertia and slope movement (lateral spreading) induce bending in the pile. This paper shows that this hypothesis of pile failure cannot explain some observations of pile failure. It has been identified that the current design codes of practice for pile design omit considerations necessary to avoid buckling of piles due to the loss of lateral soil support in the event of soil liquefaction, i.e. the structural nature of the pile is overlooked. A new design approach is proposed in this paper taking into account buckling effects.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
5th Conference of the International Conference on Case Histories in Geotechnical Engineering
Publisher
University of Missouri--Rolla
Document Version
Final Version
Rights
© 2004 University of Missouri--Rolla, 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
Bhattacharya, Subhamoy and Bolton, Malcolm, "Errors in Design Leading to Pile Failures During Seismic Liquefaction" (2004). International Conference on Case Histories in Geotechnical Engineering. 13.
https://scholarsmine.mst.edu/icchge/5icchge/session12/13
Errors in Design Leading to Pile Failures During Seismic Liquefaction
New York, New York
Collapse of piled foundations in liquefiable soils has been observed in the majority of the recent strong earthquakes despite the fact that a large margin of safety is employed in their design. This paper critically reviews the current design methods and the underlying mechanism behind them. The current method of pile design under earthquake loading is based on a bending mechanism where the inertia and slope movement (lateral spreading) induce bending in the pile. This paper shows that this hypothesis of pile failure cannot explain some observations of pile failure. It has been identified that the current design codes of practice for pile design omit considerations necessary to avoid buckling of piles due to the loss of lateral soil support in the event of soil liquefaction, i.e. the structural nature of the pile is overlooked. A new design approach is proposed in this paper taking into account buckling effects.
