Location
St. Louis, Missouri
Presentation Date
13 Mar 1991, 1:30 pm - 3:30 pm
Abstract
This paper deals with stiffnesses of pile groups based on single pile stiffness as worked out by Novak and Sharnouby (1983) using dynamic analysis. The interaction factors between two neighboring piles are used as those derived by Poulos (1971) statically but assumed to hold under dynamic situation at low frequencies such as involved in earthquakes. Pile groups of 4 to 32 piles in single circular ring and up to 60 piles in multiple rings as used under raft foundations of circular chimneys and overhead water tanks are accordingly analysed. It is found that the stiffness of the group is much less than the vector sum of individual pile stiffness, the reduction factor being quite different for vertical and horizontal translational stiffnesses and the rotational stiffness of the group.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
2nd International Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
Publisher
University of Missouri--Rolla
Document Version
Final Version
Rights
© 1991 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
Arya, Anshuli and Arya, Anand S., "Pile Group Stiffness for Seismic Soil-Structure Interaction" (1991). International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics. 30.
https://scholarsmine.mst.edu/icrageesd/02icrageesd/session05/30
Included in
Pile Group Stiffness for Seismic Soil-Structure Interaction
St. Louis, Missouri
This paper deals with stiffnesses of pile groups based on single pile stiffness as worked out by Novak and Sharnouby (1983) using dynamic analysis. The interaction factors between two neighboring piles are used as those derived by Poulos (1971) statically but assumed to hold under dynamic situation at low frequencies such as involved in earthquakes. Pile groups of 4 to 32 piles in single circular ring and up to 60 piles in multiple rings as used under raft foundations of circular chimneys and overhead water tanks are accordingly analysed. It is found that the stiffness of the group is much less than the vector sum of individual pile stiffness, the reduction factor being quite different for vertical and horizontal translational stiffnesses and the rotational stiffness of the group.
