Least Square Method to Calibrate Seismic Design Response Spectrum

Guo, Xiao Yun; Jing, Bo; Ping, Li; Zhang, Yudong

doi:10.4028/www.scientific.net/amr.378-379.358

Cited by 2 publications

(1 citation statement)

References 2 publications

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“…The seismic response of a structure does not solely depend on individual PGA values. For example, decreasing the peak values that are above the structural natural frequency does not substantially affect the structural response because the response is influenced by the contributions of all harmonic components within a certain frequency band [20,21]. The use of response spectra for the measurement of the seismic response of structures is an appropriate and broadly accepted method.…”

Section: Epa Prediction Equationmentioning

confidence: 99%

Analysis of Peak Ground Acceleration Attenuation Characteristics in the Pazarcik Earthquake, Türkiye

Wan,

Bo,

et al. 2023

Applied Sciences

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This study collected acceleration records and station reports from 379 strong-motion stations triggered by the Mw7.7 earthquake in Pazarcik, Türkiye, on 6 February 2023. A total of 451 horizontal and 194 vertical strong-motion acceleration records with complete waveforms and reasonable data were selected to establish appropriate equations for predicting seismic parameters. Two iterative algorithms, specifically the optimization algorithm and orthogonal distance regression, were employed to formulate prediction equations for PGA and EPA in the NS (north–south), EW (east–west), and vertical directions. Furthermore, a comparative analysis of the attenuation curves for PGA and EPA was conducted within the vertical and horizontal directions. The results indicated that the observed and predicted values of vertical PGA and EPA at the same fault distance were approximately 0.577–0.673 times those of horizontal PGA and EPA. The ratio range calculated in our study aligns closely with previous research results, slightly more than 2/3 only in the vicinity of fault zones. The analysis demonstrated that the horizontal PGA value of the soil site at the same fault distance was approximately 1.46 times that of the bedrock site, while the vertical PGA value was only 1.12 times. The comparison of attenuation relationships revealed that within the fault distance range of 20 km to 100 km, the horizontal PGA of the Wenchuan earthquake was approximately 1.26–2.16 times that of the Pazarcik earthquake, and the ratio increased with an increasing fault distance.

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Section: Epa Prediction Equationmentioning

confidence: 99%