[1]马红虎,隋明坤,赵 昆.2019年6月18日日本山形县Mw6.7级地震场地非线性反应特征研究[J].华南地震,2021,41(04):91-96.[doi:10.13512/j.hndz.2021.04.12]
 MA Honghu,SUI Mingkun,ZHAO Kun.Study on Nonlinear Site Response Characteristics of the Yamagata Mw 6.7 Earthquake in Japan on June 18th,2019[J].,2021,41(04):91-96.[doi:10.13512/j.hndz.2021.04.12]
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2019年6月18日日本山形县Mw6.7级地震场地非线性反应特征研究()
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华南地震[ISSN:1006-6977/CN:61-1281/TN]

卷:
41
期数:
2021年04期
页码:
91-96
栏目:
地震科学研究
出版日期:
2021-12-15

文章信息/Info

Title:
Study on Nonlinear Site Response Characteristics of the Yamagata Mw 6.7 Earthquake in Japan on June 18th,2019
文章编号:
1001-8662(2021)04-0091-06
作者:
马红虎隋明坤赵 昆
云南省地震局,昆明 650224
Author(s):
MA HonghuSUI MingkunZHAO Kun
Yunnan Earthquake Agency , Kunming 650224, China
关键词:
强震动非线性日本山形地震HVSR谱比
Keywords:
Strong-motionNonlinearityYamagata earthquake inJapanHorizontal-to-vertical spectral ratio
分类号:
P315.9
DOI:
10.13512/j.hndz.2021.04.12
文献标志码:
A
摘要:
强震作用下的土层非线性是研究场地效应的重要因素之一。选取2019年6月18日日本山形Mw6.7级地震中8个台站的主震及20次余震的强震动记录,采用主余震速度反应谱水平/垂直(HVSR)谱比,并结合非线性识别指标DNL、ADNL和PNL对主震中可能发生非线性反应特征的台站进行研究。结果表明:土体在强震动作用下场地卓越频率有向低频移动的趋势,体现了土层非线性反应的特征;非线性指标DNL和ADNL与地震动峰值加速度之间存在显著的相关性,但PNL对应关系不明显。
Abstract:
Soil nonlinearity under strong earthquake is one of the important factors for the site response research. This paper selects strong motion records of the mainshock and 20 aftershocks of 8 stations during the Yamagata Mw6.7 earthquake on June 18th, 2019, uses the main aftershock velocity response spectrum horizontal/vertical (HVSR) spectrum ratio, and combines the nonlinear identification indexes DNL, ADNL and PNL to study the stations that may have nonlinear response characteristics in the main earthquake. The results show that the predominant frequency of the soil site moves to low frequency under strong vibration, which reflects the characteristics of the nonlinear response of the soil layer; there is a significant correlation between the nonlinear indexes DNL and ADNL and the peak acceleration of ground motion, but the corresponding relationship between PNL is not obvious.

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备注/Memo

备注/Memo:
收稿日期:2021-05-16
基金项目:云南省地震局青年地震科学基金项目(2019ZX02)
作者简介:马红虎(1983-),男,硕士,工程师,主要从事地震监测、水库地震监测、工程地震监测及水库诱发地震研究。E-mail:41427282@qq.com
更新日期/Last Update: 2021-12-15