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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Generation of Synthetic Ground Motion
Author(s)
Hari Ram Parajuli1 and Rajesh Kumar Shrestha2
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DOI:10.17265/2328-2193/2018.03.002
Affiliation(s)
1. Dept. of Civil Engineering, Pulchowk Campus, Tribhuwan University, Nepal
2. Dept. of Civil Engineering, Thapathali Campus, Tribhuwan University, Nepal
ABSTRACT
The main target of the study is to generate artificial earthquake time
histories which are compatible with real earthquakes. A simple frequency-domain
method for generating time histories from the given response spectrum is
presented in this research. Weighted average response spectra are generated
using three attenuation relationships developed for the subduction zonesuitable
for Barpak M7.8 earthquake records at TU, Kirtipur. The ground motions are
simulated with consideration of source, site, and path. The simulation work is
started from noise generation work with windowing, Fast Fourier Transform (FFT)
and spectra matching (target and generated) to obtain simulated time history
using MATLAB programming language. Simulated ground motions can be utilized as
input ground motions for the dynamic analysis and design of new structures as
well as retrofitting of existing structures.
KEYWORDS
Artificial earthquake, weighted average response spectrum, attenuation relationship, Barpak, Fast Fourier Transform.
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