Location
San Diego, California
Presentation Date
26 May 2010, 4:45 pm - 6:45 pm
Abstract
Seismic soil-pile-structure interaction (SSPSI) is a complex process involving several, simultaneously occurring and, sometimes compensating phenomena. The physical processes that occur in the soil when a pile supported structure undergoes earthquake loading consist of pore-pressure generation, ground deformation and subsequent cyclic degradation, strain rate effects and gap-slap mechanism. Modeling these physical phenomena numerically is a challenge. Of the various approaches available in practice, the p-y method for evaluating lateral pile response is by far the most common. However, at present, a consensus has not been established among practitioners on the appropriateness of using p-y curves for post-liquefaction analyses. This paper presents a discussion of available models and modifications to p-y relationships used to model soil response under seismic conditions. Predictions made with these models are then compared with actual load test data performed by others. It is concluded that further research is needed to quantify and predict gap formation, the stress-strain behavior of liquefied soils and to accurately evaluate non-linear bending resistance of steel encased concrete sections.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
5th International Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
Publisher
Missouri University of Science and Technology
Document Version
Final Version
Rights
© 2010 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
Malhotra, Sanjeev, "Seismic Soil-Pile Interaction: Physical Processes and Analytical Models" (2010). International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics. 47.
https://scholarsmine.mst.edu/icrageesd/05icrageesd/session05/47
Included in
Seismic Soil-Pile Interaction: Physical Processes and Analytical Models
San Diego, California
Seismic soil-pile-structure interaction (SSPSI) is a complex process involving several, simultaneously occurring and, sometimes compensating phenomena. The physical processes that occur in the soil when a pile supported structure undergoes earthquake loading consist of pore-pressure generation, ground deformation and subsequent cyclic degradation, strain rate effects and gap-slap mechanism. Modeling these physical phenomena numerically is a challenge. Of the various approaches available in practice, the p-y method for evaluating lateral pile response is by far the most common. However, at present, a consensus has not been established among practitioners on the appropriateness of using p-y curves for post-liquefaction analyses. This paper presents a discussion of available models and modifications to p-y relationships used to model soil response under seismic conditions. Predictions made with these models are then compared with actual load test data performed by others. It is concluded that further research is needed to quantify and predict gap formation, the stress-strain behavior of liquefied soils and to accurately evaluate non-linear bending resistance of steel encased concrete sections.
