Discussion on Adjustment Method of the Characteristic Period of Site Response Spectrum with Soft Soil Layer

Abstract

Twelve site models were established based on the analysis of the influence of site conditions on earthquake damage and the influence of the soft soil layer on-site seismic response. The equivalent linearization site seismic response analysis is carried out at different input ground motion levels to discuss the influence of soft soil layer thickness and buried depth. The results show that the characteristic period of the response spectrum exhibits a gradual increase as the buried depth or thickness of the soft soil layer increases. Furthermore, the characteristic period of the response spectrum also increases with the rise in the input ground motion peak. Moreover, according to the influence characteristics of soft soil thickness, buried depth, and input ground motion intensity on the characteristic period of the site acceleration response spectrum, a method for adjusting the characteristic period of the site acceleration response spectrum with a soft soil layer is put forward.

A Classification Method of Earthquake Ground Motion Records Based on the Results of K-Means Clustering Analysis

“…The proper classification of earthquake ground motion records is essential before commencing any statistical analysis. Extensive investigations into earthquake damage have underscored the significant influence of site conditions on the characteristics of earthquake ground motions [4][5][6][7]. Consequently, earthquake ground motion records are initially grouped based on site type, facilitating the establishment of distinct design response spectra [8][9][10][11][12].…”