Location
San Diego, California
Presentation Date
27 May 2010, 7:30 pm - 9:00 pm
Abstract
Shear strain amplitude γ is an important quantity in dynamic soil analysis. Usually, a reduction of soil stiffness with increasing shear strain amplitude is observed in laboratory tests. An appropriate invariant of shear strain can be defined which is comparable with shear strains measured in laboratory tests. Usually, shear wave velocity cs is determined from field or laboratory tests and the particle velocity v is obtained from vibration measurements. Afterwards, the shear strain amplitude γ is often estimated from the equation γ = ν / cs, which can be derived for the case of one dimensional wave propagation. Based on numerical analyses with FEM, the validity of the above equation for γ is checked. It can be shown that there is a clear differ-ence between the zone close to the loading area and the zone at a larger distance from the loading area. Experimental results of vibration measurements in the field and the evaluation of dynamic soil properties due to rail traffic are pre-sented and the impact on permanent soil deformations is discussed. Based on the results of the field measurements and the numerical calculations recommendations on the determination of γ for dynamic analysis are presented.
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
Wegener, Dirk and Herle, Ivo, "Investigation of Shear Strain Amplitude Induced by Railroad Traffic in Soils" (2010). International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics. 8.
https://scholarsmine.mst.edu/icrageesd/05icrageesd/session02/8
Included in
Investigation of Shear Strain Amplitude Induced by Railroad Traffic in Soils
San Diego, California
Shear strain amplitude γ is an important quantity in dynamic soil analysis. Usually, a reduction of soil stiffness with increasing shear strain amplitude is observed in laboratory tests. An appropriate invariant of shear strain can be defined which is comparable with shear strains measured in laboratory tests. Usually, shear wave velocity cs is determined from field or laboratory tests and the particle velocity v is obtained from vibration measurements. Afterwards, the shear strain amplitude γ is often estimated from the equation γ = ν / cs, which can be derived for the case of one dimensional wave propagation. Based on numerical analyses with FEM, the validity of the above equation for γ is checked. It can be shown that there is a clear differ-ence between the zone close to the loading area and the zone at a larger distance from the loading area. Experimental results of vibration measurements in the field and the evaluation of dynamic soil properties due to rail traffic are pre-sented and the impact on permanent soil deformations is discussed. Based on the results of the field measurements and the numerical calculations recommendations on the determination of γ for dynamic analysis are presented.
