Location
San Diego, California
Presentation Date
27 May 2010, 7:30 pm - 9:00 pm
Abstract
The problem of wave propagation in an irregular ground is crucial when the landform is complex as in the case of Japan. This problem has been studied by a number of researchers; however, most of studies were made from the viewpoint of body wave propagation and only a few dealt with surface waves. The objective of this study is to examine Rayleigh and Love wave propagation in an irregular ground based on the combined method of thin layered element and finite element. In this paper, the following conclusions are made: 1. H/V spectra of a horizontally layered medium as well as the surface wave modes can be obtained based on the thin layered element method. 2. When an incident Rayleigh/Love wave propagates toward an irregular ground, different type of Rayleigh/Love wave modes as well as body waves are generated. 3. In the microtremor wave field due to various incident surface waves, it has pointed out that the peak frequency and its height of H/V spectrum changes according to the distance from the irregularity, which is harmonious with measured results.
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
Nakagawa, Hiroto and Nakai, Shoichi, "Propagation of Surface Waves in an Irregular Ground Based on the Thin Layered Element and Finite Element Method" (2010). International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics. 12.
https://scholarsmine.mst.edu/icrageesd/05icrageesd/session02/12
Included in
Propagation of Surface Waves in an Irregular Ground Based on the Thin Layered Element and Finite Element Method
San Diego, California
The problem of wave propagation in an irregular ground is crucial when the landform is complex as in the case of Japan. This problem has been studied by a number of researchers; however, most of studies were made from the viewpoint of body wave propagation and only a few dealt with surface waves. The objective of this study is to examine Rayleigh and Love wave propagation in an irregular ground based on the combined method of thin layered element and finite element. In this paper, the following conclusions are made: 1. H/V spectra of a horizontally layered medium as well as the surface wave modes can be obtained based on the thin layered element method. 2. When an incident Rayleigh/Love wave propagates toward an irregular ground, different type of Rayleigh/Love wave modes as well as body waves are generated. 3. In the microtremor wave field due to various incident surface waves, it has pointed out that the peak frequency and its height of H/V spectrum changes according to the distance from the irregularity, which is harmonious with measured results.
