The Simulation of Spatially Unsteady Seismic Ground Motion

DOI

10.2991/978-94-6463-449-5_70How to use a DOI?

Keywords

eismic ground; WASW; unsteady; spatial correlation

Abstract

The simulation of spatially varying non-stationary seismic fields holds a crucial role in the fields of earthquake engineering and structural engineering. This simulation technique not only significantly enhances the safety of structural designs but also boosts multi-scale analysis capabilities, optimizes emergency management, and improves disaster response efficiency. By more accurately assessing the potential impacts of earthquakes, it notably advances the identification and precision of disaster management and brings revolutionary progress to the development of related scientific and technological fields. This simulation method has profound practical applications and theoretical value, making it a current research hotspot. This paper employs the Harmonic Synthesis Method to simulate the acceleration time histories of non-stationary seismic waves, innovatively incorporating the Fast Fourier Transform (FFT) algorithm to significantly enhance the efficiency and accuracy of the simulations. Additionally, the paper takes into account the unique structural characteristics of large-span bridges in mountainous areas, simulating not only the traveling wave effects of multiple-point excitation but also the spatial coherence between bridge piers. By using modulation functions for the non-stationary treatment of seismic waves, this study accurately reflects the dynamic variations of seismic waves at different locations, thereby more realistically simulating and predicting the response behavior of large structures during actual earthquakes. Moreover, the methods and results of this study not only have significant implications for engineering practice but also provide new ideas and tools for theoretical research in earthquake engineering, deepening our understanding of the complexities of earthquake dynamics. Through this efficient and innovative simulation method, we can better design and evaluate structural safety and emergency measures in the face of earthquake threats, thereby reducing losses during disasters and protecting human life and property.

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  - Yongyi Yang
AU  - Zizhen Zhang
PY  - 2024
DA  - 2024/06/30
TI  - The Simulation of Spatially Unsteady Seismic Ground Motion
BT  - Proceedings of the 2024 8th International Conference on Civil Architecture and Structural Engineering (ICCASE 2024)
PB  - Atlantis Press
SP  - 712
EP  - 723
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-449-5_70
DO  - 10.2991/978-94-6463-449-5_70
ID  - Yang2024
ER  -