Ground Shaking Characteristics of River Valleys and Seismic Response of Dams Considering Scattered Fields

DOI

10.2991/978-94-6463-556-0_4How to use a DOI?

Keywords

river valley earthquake; scattered field; IBIEM; Dam Seismic Response; magnification effect

Abstract

For a river valley site with non-flat topography, the scattering effect will significantly change the distribution of the seismic field, and the role of the site scattering effect on ground shaking under oblique incidence of seismic waves is not clear for the time being. The scattering effect will change the ground vibration characteristics of the river valley, and then exert non-uniform excitation on the hydraulic structures located in the river valley. In this paper, the ground vibration characteristics of the valley features considering the scattered field are investigated based on the indirect boundary integration method (IBIEM), and the seismic responses of the dam under free-field and full-field viscoelastic boundary inputs are compared, and the results are as follows: the ground vibration features at the foot of the slope and the top of the slope on both sides of the valley are more affected by the angle of incidence, and the amplification effect of the feature facing the seismic wave is stronger; the peak acceleration of the dam is amplified by about 20% under the full-field input. The peak acceleration of the dam under full-field input is amplified by about 20%, which reveals the necessity of full-field input.

Copyright

© 2024 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Xinyu Yang
AU  - Zhiqiang Song
PY  - 2024
DA  - 2024/10/29
TI  - Ground Shaking Characteristics of River Valleys and Seismic Response of Dams Considering Scattered Fields
BT  - Proceedings of the 2024 6th International Conference on Structural Seismic and Civil Engineering Research (ICSSCER 2024)
PB  - Atlantis Press
SP  - 26
EP  - 34
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-556-0_4
DO  - 10.2991/978-94-6463-556-0_4
ID  - Yang2024
ER  -