Location
St. Louis, Missouri
Presentation Date
13 Mar 1991, 1:30 pm - 3:30 pm
Abstract
This paper describes a hybrid method that may be used to model the dynamic responses of multiple rectangular foundations resting on a homogeneous, viscoelastic stratum and excited by harmonic waves. The hybrid analysis described in this paper combines the dynamic stiffness and finite element methods. The method uses equivalent area disk loads for Green's functions at the soil surface. The dynamic stiffness method is used to obtain the stiffness matrix of the soil medium and the finite element method is used to obtain the stiffness matrix of surface foundations. The stiffness of the entire soil-structure system can be obtained using a substructure approach by assembling the stiffnesses of the soil medium and the foundations. The stiffness of the surface foundations affects the dynamic behavior of the soil-foundation system, especially with respect to its vertical motion. The finite element method described in this paper is used to construct the stiffness of the surface foundations. Equivalent area disks are placed at discretized points on the interface between the foundations and stratum surface. The stratum compliance matrix is constructed using the Green functions for vertical and lateral disk loads. Implementation of this model for analyzing soil-foundation system is current underway.
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
Lin, Chin-Hsu and Adams, Teresa M., "A Hybrid Model for Soil-Foundation Compliance" (1991). International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics. 2.
https://scholarsmine.mst.edu/icrageesd/02icrageesd/session05/2
Included in
A Hybrid Model for Soil-Foundation Compliance
St. Louis, Missouri
This paper describes a hybrid method that may be used to model the dynamic responses of multiple rectangular foundations resting on a homogeneous, viscoelastic stratum and excited by harmonic waves. The hybrid analysis described in this paper combines the dynamic stiffness and finite element methods. The method uses equivalent area disk loads for Green's functions at the soil surface. The dynamic stiffness method is used to obtain the stiffness matrix of the soil medium and the finite element method is used to obtain the stiffness matrix of surface foundations. The stiffness of the entire soil-structure system can be obtained using a substructure approach by assembling the stiffnesses of the soil medium and the foundations. The stiffness of the surface foundations affects the dynamic behavior of the soil-foundation system, especially with respect to its vertical motion. The finite element method described in this paper is used to construct the stiffness of the surface foundations. Equivalent area disks are placed at discretized points on the interface between the foundations and stratum surface. The stratum compliance matrix is constructed using the Green functions for vertical and lateral disk loads. Implementation of this model for analyzing soil-foundation system is current underway.
