随机有限断层地震动模拟输入参数模型研究进展
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作者单位:

1.宁波大学土木工程与地理环境学院, 浙江 宁波 315211 ;2.广州大学土木与交通工程学院, 广东 广州 510006 ;3.苏州科技大学土木工程学院, 江苏 苏州 215011

作者简介:

党鹏飞(1988-),男,博士,副教授,主要从事地震动模拟、震源物理过程及场地效应等方面的研究。E-mail:dangpengfei@nbu.edu.cn。

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中图分类号:

P315.9

基金项目:

国家自然科学基金项目(42204050);浙江省自然科学基金探索项目(ZX2024000700);科技部重点研发计划项目(2022YFC3003600)


Research progress on input parameter models for stochastic finite-fault ground motion simulation
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1.School of Civil & Environmental Engineering and Geography Science, Ningbo University, Ningbo 315211 , Zhejiang, China ;2.School of Civil Engineering and Transportation, Guangzhou University, Guangzhou 510006 , Guangdong, China ;3.School of Civil Engineering, Suzhou University of Science and Technology, Suzhou 215011 , Jiangsu, China

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    摘要:

    强地震动受震源、传播路径及局部场地条件等多种因素的影响。目前,基于大尺度区域观测记录建立的地震动参数模型,在应用随机有限断层法模拟近场破坏性地震的地震动场时,常因未充分考虑参数模型的区域性特征,易导致参数不一致、模拟结果不确定性增大或精度不足等问题。文章梳理近场高频地震动模拟技术还需深化研究的若干方面,并从震源断层几何尺度与滑移分布、地震动几何传播与滞弹性衰减、震源谱高频衰减参数及局部场地效应四个方面,系统总结相关地震动模型参数的研究进展与待解决问题。基于强震动观测记录,探究小尺度区域地震动模型参数的统计规律、内在关系及其相互作用机制,发展地震动场精细化模拟方法,对于评估地震动模拟结果的可靠性具有重要实践意义,对灾后重建与应急救援、结构动力分析及抗震设计等具有重要的学术价值和工程指导意义,还可为基于情景地震的结构概率地震需求分析提供思路。

    Abstract:

    Strong ground motions are influenced by multiple factors, such as the seismic source, propagation path, and local site conditions. However, existing ground motion parameter models developed from large-scale regional observation records often lead to parameter inconsistency, increased uncertainty, or insufficient accuracy when applying the stochastic finite-fault method to simulate near-field destructive ground motion fields. This is due to the insufficient consideration of regional characteristics in parameter modeling. This paper outlines several aspects requiring further research in near-field high-frequency ground motion simulation technology and systematically reviews the progress and unresolved problems in related ground motion model parameters from four perspectives: geometric scale and slip distribution of the source fault, geometric spreading and anelastic attenuation of ground motions, high-frequency attenuation parameter of the source spectrum, and local site effects. According to strong motion observation records, the investigation of statistical patterns, intrinsic relationships, and interaction mechanisms of ground motion model parameters in small-scale regions and the development of refined simulation methods for ground motion fields are of practical significance for assessing the reliability of simulation results. Furthermore, this research holds academic value and provides engineering guidance for postdisaster reconstruction, emergency response, structural dynamic analysis, and seismic design while offering insights for earthquake-based probabilistic seismic demand analysis of structures.

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党鹏飞,崔杰,刘启方.随机有限断层地震动模拟输入参数模型研究进展[J].地震工程学报,2026,48(1):145-156. DOI:10.20000/j.1000-0844.20250311002

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  • 收稿日期:2025-03-11
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  • 在线发布日期: 2025-12-15
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