Study on Fitting Accuracy of Response Spectra for Multiple Damping Ratios
Chenya

School of Civil Engineering Tianjin Chengjian University, Tianjin, 300384；

Abstract: Employing frequency-domain methods[1] to generate seismic motions approximating the target spectrum.Simultaneously generate the power spectrum density function using the target response spectrum.The time history of acceleration can be obtained by applying an inverse Fourier  transform.Nevertheless, the traditional single-damping frequency-domain method shows considerable inaccuracy in approximating multi-damping target spectra. To address this, an iterative correction technique is applied to the conventional method to achieve matched response spectra.Furthermore, the precision of the response spectrum is enhanced through the narrow-band time-history method[2].

Keywords: Narrow-band time history; Response spectrum; Seismic motion; Flat terrain

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