Recognition and Application of Near-Fault Pulse-Type Ground Motion
LEI Yixin
CHEN Huiguo
YANG Xiaorui
Abstract：The special properties of near-fault pulse-type ground motion in response spectrum and frequency spectrum are the main influencing factors causing seismic damage to near-field medium and long-period structures.Accurately identifying and extracting the pulse characteristics of near-fault ground motion is of great significance for simulating and inverting pulse-type ground motion,analyzing structural responses characteristic under pulse action,evaluating the seismic performance of near-field structures,and conducting seismic fortification design of structures.By studying the recognition principles and recognition effects of three typical recognition methods for pulse-type ground motion based on continuous wavelet transform,energy,and EM&G,respectively,the paper analyzed the advantages and disadvantages of different methods,summarized the suggestions for confirming pulse characteristics that multiple methods should be adopted for repeated recognition,and conducted recognition and verification of pulse-type ground motion based on the PEER database.The distribution characteristics of pulse-type ground motion in terms of fault distance and site type were sorted out.
Keywords：Near fault pulse-type ground motionPulse characteristicQuantitative recognition method
Publication Date：2025-06-30
Online Publishing Date：2025-08-25(First online date of this platform, not the publication date of the document)
Pages：10( 40-49 )