The Research of Input Ground Motion on Seismic Fragility Analysis of Bridges

Abstract:

Analyzed the importance of selecting reasonably ground motion input in seismic fragility analysis of the bridge. Based on the common methods of synthesis artificial seismic wave which used trigonometric series and according to the characters of Fourier series, extracted phase spectrum from practical seismic waves ,through modulating the Fourier amplitude spectrum, obtained the artificial seismic wave which fitted compatible with the design response spectrum. Similar to nature small earthquake records, it has the character of non-stationary on time-domain and frequency-domain. Synthesize a series of artificial seismic waves in this method, can improve the accuracy and pertinence of the bridge seismic fragility.

• Periodical: Advanced Materials Research (Volumes 490-495)
• Pages: 1826-1830
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.490-495.1826
• Online since: March 2012
• Authors: Yun Zhang, Pin Tan, Xiao Rong Zhou
• Keywords: Amplitude Spectrum, Artificial Seismic Wave, Phase Spectrum, Recording of Small Earthquake, Seismic Fragility

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