首页|我国黄土高原地区地震动衰减关系研究的若干进展

我国黄土高原地区地震动衰减关系研究的若干进展

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地震动的衰减关系是指地震动随震级、距离和场地条件等变化的经验关系,近年来在我国亦被称为地震动预测方程,是估计地震动及其影响场的主要方法之一,在地震区划和重大工程场地地震安全性评价中被广泛应用.黄土是一种特殊土,在我国广泛分布.我国黄土高原地区地质构造复杂,新构造活动强烈,中强地震频发,地震动的衰减关系有其特殊性,总结我国黄土高原地区地震动衰减关系的研究成果对促进黄土高原地区抗震研究有重要意义.在简要介绍国内外地震动衰减关系研究的基础上,全面系统地总结我国学者在黄土高原地区的地震烈度衰减关系,基岩和土层场地地震动峰值加速度、峰值速度、峰值位移以及反应谱衰减关系方面的研究成果;评述和讨论在黄土覆盖地区地震动衰减研究领域存在的问题和今后的研究方向.文章的研究工作对从事黄土高原地区地震工程研究的科技人员有重要参考价值.
Advancements in ground motion attenuation relationship in the Loess Plateau region of China
The attenuation relationship of seismic ground motion is a crucial empirical tool used to estimate the relationship between seismic ground motion and various factors.These factors include earthquake magnitude,distance,and site conditions.Recently,this tool is also called the ground motion prediction equation in China,which is one of the primary methods for estimating seismic ground motion and its influence field.Therefore,it is widely used in seismic zoning and seismic safety evaluation of major engineering sites.Loess is a special soil type that is widely dis-tributed throughout China.In the Loess Plateau of China,which has a complex geological struc-ture,the neotectonic activity is strong and medium-to-strong earthquakes occur frequently.So,the attenuation relationship of seismic motion in this area is unique and complex.Therefore,summarizing the research findings of the ground motion attenuation relationship in the Loess Plateau region of China is significant for promoting seismic research in this area.This paper pro-vides a comprehensive and systematic summary of the research results of Chinese scholars on the attenuation relation of seismic intensity,peak ground acceleration,peak ground velocity,and peak ground displacement in the bedrock and soil sites of the Loess Plateau region.This study also reviews and discusses existing problems and future research directions in the field of ground motion attenuation research in the areas covered with loess.The research results have a signifi-cant reference value for scientific and technological personnel engaged in earthquake engineering research in the Loess Plateau region.

Loess Plateau areaseismic intensityground motionattenuation relationshipbedrocksoil layerresearch process

薄景山、万卫、彭达、段玉石、李琪

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中国地震局工程力学研究所中国地震局地震工程工程振动重点实验室,黑龙江哈尔滨 150080

地震灾害防治应急管理部重点实验室,黑龙江哈尔滨 150080

防灾科技学院地质工程学院,河北三河 065201

河北省地震灾害防御与风险评价重点实验室,河北三河 065201

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黄土高原地区 地震烈度 地震动 衰减关系 基岩 土层 研究进展

国家自然科学基金中央高校基本科研业务费专项

U1939209ZY20215114

2024

地震工程学报
中国地震局兰州地震研究所,中国地震学会,清华大学,中国土木工程学会

地震工程学报

CSTPCD北大核心
影响因子:1.191
ISSN:1000-0844
年,卷(期):2024.46(1)
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