随机有限断层地震动模拟输入参数模型研究进展

打开文本图片集

中图分类号：P315.9 文献标志码：A 文章编号：1000-0844（2026）01—0145—12

Research progress on input parameter models for stochastic finite-fault ground motion simulation

DANG Pengfei' ，CUI Jie 2 ，LIU Qifang？ （1. School of Ciuil & Enuironmental Engineering and Geography Science，Ningbo University，Ningbo 315211， Zhejiang，China; 2. School of Civil Engineering and Transportation，Guangzhou University，Guangzhou 510o6，Guangdong，China; 3.School of Civil Engineering，Suzhou Universityof Science and Technology，Suzhou 215ol1，Jiangsu，China）

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 insuficient accuracy when applying the stochastic finite-fault method to simulate near-field destructive ground motion fields. This is due to the insuficient 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.

Keywords： ground motion simulation; path effect; site effect; seismic source model; generalized inversion technique

0 引言

地震动主要受震源特性、地震波传播路径的衰减效应和局部场地条件三个因素影响。（剩余29338字）