Location
St. Louis, Missouri
Presentation Date
13 Mar 1991, 1:30 pm - 3:30 pm
Abstract
The stiffness and damping coefficient of soil are critical parameters in the Winkler's model for the seismic analysis of buried pipelines. This paper presents an analytical study in calculating the lateral dynamic stiffness (elastic and inelastic) and damping coefficient of soils for the seismic analysis of buried pipelines. The effects of the depth of the buried pipeline and the variation of Poisson's ratio of soils are cons1dered. In the analysts, first, by using the elastic half-space theory, the elastic stiffness and geometrical damping coefficient of soils are obtained. From the numerical results, the elastic stiffness and geometrical damping coefficient by using best fitted formulas are presented. Secondly, empirical inelastic characteristics of soils are considered. The empirical data includes relationships among dynamic shear modulus, material damping ratio, and dynamic shear strain amplitude. The total damping coefficient of the system can be obtained by adding the material damping to the geometrical damping coefficient.
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
Zhang, Xinjian; Wang, Leon R. L.; and Ishibashi, Isao, "Lateral Stiffness and Damping Coefficient of Soils for Seismic Analysis of Buried Pipelines" (1991). International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics. 21.
https://scholarsmine.mst.edu/icrageesd/02icrageesd/session05/21
Included in
Lateral Stiffness and Damping Coefficient of Soils for Seismic Analysis of Buried Pipelines
St. Louis, Missouri
The stiffness and damping coefficient of soil are critical parameters in the Winkler's model for the seismic analysis of buried pipelines. This paper presents an analytical study in calculating the lateral dynamic stiffness (elastic and inelastic) and damping coefficient of soils for the seismic analysis of buried pipelines. The effects of the depth of the buried pipeline and the variation of Poisson's ratio of soils are cons1dered. In the analysts, first, by using the elastic half-space theory, the elastic stiffness and geometrical damping coefficient of soils are obtained. From the numerical results, the elastic stiffness and geometrical damping coefficient by using best fitted formulas are presented. Secondly, empirical inelastic characteristics of soils are considered. The empirical data includes relationships among dynamic shear modulus, material damping ratio, and dynamic shear strain amplitude. The total damping coefficient of the system can be obtained by adding the material damping to the geometrical damping coefficient.
