[1]张齐,胡进军,谢礼立,等.地震动衰减关系区域性差异初步探讨[J].地震工程与工程振动,2018,(04):150-157.[doi:10.13197/j.eeev.2018.04.150.zhangq.022]
 ZHANG Qi,HU Jinjun,XIE Lili,et al.Preliminary study on regional difference of ground motion attenuation relationship[J].EARTHQUAKE ENGINEERING AND ENGINEERING DYNAMICS,2018,(04):150-157.[doi:10.13197/j.eeev.2018.04.150.zhangq.022]
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地震动衰减关系区域性差异初步探讨
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《地震工程与工程振动》[ISSN:/CN:]

卷:
期数:
2018年04期
页码:
150-157
栏目:
论文
出版日期:
2018-10-28

文章信息/Info

Title:
Preliminary study on regional difference of ground motion attenuation relationship
作者:
张齐12 胡进军3 谢礼立34 刘章军12
1. 三峡大学 土木与建筑学院, 湖北 宜昌 443002;
2. 湖北省防灾减灾重点实验室(三峡大学), 湖北 宜昌 443002;
3. 中国地震局 工程力学研究所, 中国地震局地震工程与工程振动重点实验室, 黑龙江 哈尔滨 150080;
4. 哈尔滨工业大学 土木工程学院, 黑龙江 哈尔滨 150090
Author(s):
ZHANG Qi12 HU Jinjun3 XIE Lili34 LIU Zhangjun12
1. College of Civil Engineering & Architecture, China Three Gorges University, Yichang 443002, China;
2. Hubei Key Laboratory of Disaster Prevention and Reduction, China Three Gorges University, Yichang 443002, China;
3. Key Laboratoy of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China;
4. School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China
关键词:
地震动衰减关系区域性差异震源效应距离衰减场地效应
Keywords:
ground motion attenuation relationshipregional differencesource effectdistance attenuationsite effect
分类号:
P315
DOI:
10.13197/j.eeev.2018.04.150.zhangq.022
摘要:
本研究以中国川滇地区、美国西部、日本、新西兰四个典型的地震区为对象,利用四个区域81次地震获取的2488组强震记录,借鉴广义反演的思想,对影响地震动幅值和地震动衰减关系的震源效应、距离衰减和场地效应3个主要因素进行了分离。通过从以上3个方面对比和分析,初步探讨了四个地区地震动特征和衰减关系的区域性差异。比较结果表明:(1)震源方面,区域震源特征的差异对T<0.5 s的短周期段和T>3.0 s的长周期段地震动影响尤为显著,同时,相比于小震,大震地震动受区域震源特征差异的影响更大;(2)传播介质方面:不同区域传播介质的差异性对小震影响比对大震的影响更显著,且对短周期地震动的影响比对长周期地震动影响更大;(3)局部场地方面,不同区域场地特征的差异对软土场地长周期地面运动影响更加显著。
Abstract:
Four typical seismic areas including Sichuan-Yunnan region in China, western USA, Japan and New Zealand as research objects, 2488 ground motion records from 81 earthquakes of those areas are studied. A method similar to generalized inversion technique(GIT) is used to separate the effects of seismic source, distance attenuation and site effects from the ground motion amplitudes. The regional differences of characteristics and attenuation relationships of ground motions are preliminary studied by comparative analysis from these three aspects. The comparison results show that:(1)the variation of source characteristics between different seismic areas lead to significant regional differences for ground motion amplitudes at extremely short (T<0.5 s) and long periods (T>3 s), and these regional effects appear to slightly more prominent for large earthquakes than small earthquakes; (2) the effects of distinctions of crustal media for different seismic areas on distance attenuation of ground motions are more obvious for small earthquakes than larger earthquakes; (3) in the aspect of site effect, the regional differences of ground motions caused by the variation of site characteristics between different seismic areas are significant for long periods ground motions at soft site.

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备注/Memo

备注/Memo:
收稿日期:2018-03-02;改回日期:2018-05-18。
基金项目:国家自然科学基金项目(51778343)
作者简介:张齐(1988-),男,讲师,博士,主要从事地震工程研究.E-mail:zhangqi_1988@hotmail.com
更新日期/Last Update: 1900-01-01