Location
San Diego, California
Presentation Date
29 May 2010, 8:00 am - 9:30 am
Abstract
This paper studies the topographic aggravation of the peak seismic acceleration in the horizontal and vertical directions for various cases of 2D uniform surface geometries: hills, canyons and slopes. The study is based on a large number of 2D wave propagation analyses for uniform soil conditions performed with the finite-difference method. All analyses were visco-elastic, assumed vertically impinging harmonic SV waves and studied parametrically the effects of the slope inclination i, the dimensionless height H/λ of the topographic feature (where H is the height and λ is the predominant S wavelength) and of the width B of the canyon base and the hill top. The analyses show that the crests of canyons suffer from increased parasitic vertical accelerations as compared to the respective slopes (with the same ι and H/λ), while the aggravation of the horizontal acceleration is similar. For the cases of hills, the analyses show that the width B of the hill top is a crucial parameter, since small values of B lead to very large aggravations of the peak horizontal acceleration at the hill crest, as compared to the respective slopes.
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
Papadimitriou, Achilleas G. and Chaloulos, Yannis, "Aggravation of the Peak Seismic Acceleration in the Vicinity of 2D Hills, Canyons and Slopes" (2010). International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics. 3.
https://scholarsmine.mst.edu/icrageesd/05icrageesd/session03/3
Included in
Aggravation of the Peak Seismic Acceleration in the Vicinity of 2D Hills, Canyons and Slopes
San Diego, California
This paper studies the topographic aggravation of the peak seismic acceleration in the horizontal and vertical directions for various cases of 2D uniform surface geometries: hills, canyons and slopes. The study is based on a large number of 2D wave propagation analyses for uniform soil conditions performed with the finite-difference method. All analyses were visco-elastic, assumed vertically impinging harmonic SV waves and studied parametrically the effects of the slope inclination i, the dimensionless height H/λ of the topographic feature (where H is the height and λ is the predominant S wavelength) and of the width B of the canyon base and the hill top. The analyses show that the crests of canyons suffer from increased parasitic vertical accelerations as compared to the respective slopes (with the same ι and H/λ), while the aggravation of the horizontal acceleration is similar. For the cases of hills, the analyses show that the width B of the hill top is a crucial parameter, since small values of B lead to very large aggravations of the peak horizontal acceleration at the hill crest, as compared to the respective slopes.
