Yuhe Zou , Xiaoyu Chen , Dongsheng Wang , Lei Tong , Jiancheng Dai , Weijian Tang
{"title":"A probabilistic-statistical hybrid model for dominant pulses in pulse-like ground motions (PLGMs)","authors":"Yuhe Zou , Xiaoyu Chen , Dongsheng Wang , Lei Tong , Jiancheng Dai , Weijian Tang","doi":"10.1016/j.soildyn.2025.109605","DOIUrl":null,"url":null,"abstract":"<div><div>Pulse-like ground motions (PLGMs) have been shown to significantly amplify the nonlinear seismic demands of structures, critically impacting seismic design and risk assessment. The effective simulation of pulse characteristics in PLGMs is essential for achieving these purposes. In this study, a probabilistic-statistical hybrid model optimized by genetic algorithms is proposed to efficiently simulate the dominant pulses of PLGMs. A comprehensive database consisting of 194 PLGMs from 36 global earthquakes was established, enabling detailed analysis of the correlations between the simulation model parameters and the real pulse in records. By utilizing Mavroeidis’ model, probabilistic-statistical models for the pulse period (<em>T</em><sub>p</sub>) and pulse amplitude (<em>V</em><sub>p</sub>), along with probabilistic distribution models for the wave shape parameter (<em>γ</em>) and phase parameter (<em>φ</em>), were systematically developed. This provides a comprehensive framework for characterizing pulses in PLGMs. Nonlinear structural analysis further demonstrates that the synthetic records generated by the proposed hybrid model effectively reproduce structural responses, enhancing their applicability in seismic design and risk assessment within engineering applications.</div></div>","PeriodicalId":49502,"journal":{"name":"Soil Dynamics and Earthquake Engineering","volume":"198 ","pages":"Article 109605"},"PeriodicalIF":4.2000,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Soil Dynamics and Earthquake Engineering","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0267726125003987","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, GEOLOGICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Pulse-like ground motions (PLGMs) have been shown to significantly amplify the nonlinear seismic demands of structures, critically impacting seismic design and risk assessment. The effective simulation of pulse characteristics in PLGMs is essential for achieving these purposes. In this study, a probabilistic-statistical hybrid model optimized by genetic algorithms is proposed to efficiently simulate the dominant pulses of PLGMs. A comprehensive database consisting of 194 PLGMs from 36 global earthquakes was established, enabling detailed analysis of the correlations between the simulation model parameters and the real pulse in records. By utilizing Mavroeidis’ model, probabilistic-statistical models for the pulse period (Tp) and pulse amplitude (Vp), along with probabilistic distribution models for the wave shape parameter (γ) and phase parameter (φ), were systematically developed. This provides a comprehensive framework for characterizing pulses in PLGMs. Nonlinear structural analysis further demonstrates that the synthetic records generated by the proposed hybrid model effectively reproduce structural responses, enhancing their applicability in seismic design and risk assessment within engineering applications.
期刊介绍:
The journal aims to encourage and enhance the role of mechanics and other disciplines as they relate to earthquake engineering by providing opportunities for the publication of the work of applied mathematicians, engineers and other applied scientists involved in solving problems closely related to the field of earthquake engineering and geotechnical earthquake engineering.
Emphasis is placed on new concepts and techniques, but case histories will also be published if they enhance the presentation and understanding of new technical concepts.