Identification of the strong velocity pulse considering three-dimensional ground motion

IF 4.2 2区工程技术 Q1 ENGINEERING, GEOLOGICAL

Soil Dynamics and Earthquake Engineering Pub Date : 2025-02-22 DOI:10.1016/j.soildyn.2025.109328

Zhiyuan Li , Hemanta Hazarika , Guangqi Chen , Zishuang Han , Chaofan Feng

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引用次数: 0

Abstract

Pulse-like ground motions (PLGMs) exhibit pronounced orientation-dependent characteristics, underscoring the necessity of identifying the strong velocity pulse across all orientations. This study aims to address the limitations of prior studies that identified the pulse by considering only the horizontal components. Utilizing typical seismic records from the NGA-West2 database, the study focuses on the pulse identification in three-dimensional (3D) space. Initially, the study examines the spatial amplitude characteristics of PLGMs, emphasizing the impact of the vertical component on PLGMs. Subsequently, a method for identifying the pulse based on the maximum peak ground velocity (PGV) of three orthogonal orientations is proposed. By comparing the identification results of the proposed method with those obtained by the widely adopted Baker (2014) method, its applicability and accuracy are confirmed. Furthermore, the pulse orientation is assessed by examining the inelastic response of the structure, suggesting its applicability in seismic engineering practice to estimate the maximum seismic demand on structures.

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来源期刊

Soil Dynamics and Earthquake Engineering 工程技术-地球科学综合

CiteScore

7.50

自引率

15.00%

发文量

446

审稿时长

8 months

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.