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层状场地中瑞利波动力响应及传播特性分析

Analysis of Rayleigh wave dynamic response and propagation characteristics in layered site.

作者信息

Lv Hao

机构信息

College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, China.

Department of Civil and Airport Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 20016, China.

出版信息

Sci Rep. 2024 Sep 28;14(1):22524. doi: 10.1038/s41598-024-73600-8.

DOI:10.1038/s41598-024-73600-8
PMID:39341932
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11438886/
Abstract

Rayleigh waves are crucial in earthquake engineering due to their significant contribution to structural damage. This study aims to accurately synthesize Rayleigh wave fields in both uniform elastic half-spaces and horizontally layered elastic half-spaces. To achieve this, we developed a self-programmed FORTRAN program utilizing the thin layer stiffness matrix method. The accuracy of the synthesized wave fields was validated through numerical examples, demonstrating the program's reliability for both homogeneous and layered half-space scenarios. A comprehensive analysis of Rayleigh wave propagation characteristics was conducted, including elliptical particle motion, depth-dependent decay, and energy concentration near the surface. The computational efficiency of the self-programmed FORTRAN program was also verified. This research contributes to a deeper understanding of Rayleigh wave behavior and lays the foundation for further studies on soil-structure interaction under Rayleigh wave excitation, ultimately improving the safety and resilience of structures in seismic-prone regions.

摘要

瑞利波在地震工程中至关重要，因为它们对结构破坏有重大影响。本研究旨在精确合成均匀弹性半空间和水平分层弹性半空间中的瑞利波场。为实现这一目标，我们利用薄层刚度矩阵法开发了一个自编的FORTRAN程序。通过数值算例验证了合成波场的准确性，证明了该程序在均匀和分层半空间情况下的可靠性。对瑞利波传播特性进行了全面分析，包括椭圆粒子运动、深度依赖性衰减以及表面附近的能量集中。还验证了自编FORTRAN程序的计算效率。这项研究有助于更深入地理解瑞利波的行为，并为进一步研究瑞利波激励下的土-结构相互作用奠定基础，最终提高地震多发地区结构的安全性和恢复力。

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本文引用的文献

1
Adaptive finite difference for seismic wavefield modelling in acoustic media.声学介质中地震波场建模的自适应有限差分法。
Sci Rep. 2016 Aug 5;6:30302. doi: 10.1038/srep30302.