[1]王振宇,赵培培,薄景山,等.川滇甘陕地区反应谱阻尼折减系数研究[J].自然灾害学报,2019,28(06):010-16.[doi:10.13577/j.jnd.2019.0602]
 WANG Zhenyu,ZHAO Peipei,BO Jingshan,et al.Study on damping coefficient of response spectrum in Sichuan, Yunnan, Gansu and Shaanxi Provinces[J].,2019,28(06):010-16.[doi:10.13577/j.jnd.2019.0602]
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川滇甘陕地区反应谱阻尼折减系数研究
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《自然灾害学报》[ISSN:/CN:23-1324/X]

卷:
28
期数:
2019年06期
页码:
010-16
栏目:
出版日期:
2019-12-28

文章信息/Info

Title:
Study on damping coefficient of response spectrum in Sichuan, Yunnan, Gansu and Shaanxi Provinces
作者:
王振宇1 赵培培1 薄景山12 谢志南2
1. 防灾科技学院, 河北 燕郊 065201;
2. 中国地震局工程力学研究所, 黑龙江 哈尔滨 150080
Author(s):
WANG Zhenyu1 ZHAO Peipei1 BO Jingshan12 XIE Zhinan2
1. Institute of Disaster Prevention, Yanjiao 065201, China;
2. Institute Engineering Mechanics, CEA, Harbin 150080, China
关键词:
阻尼比反应谱抗震设计规范阻尼折减系数衰减指数
Keywords:
damping ratioresponse spectrumaseismic design criteriondamping reduction factorattenuation index
分类号:
P315.9;X9
DOI:
10.13577/j.jnd.2019.0602
摘要:
阻尼折减系数是建筑抗震中校正阻尼比不是5%的弹性反应谱。本文根据我国近20年来川滇甘陕地区大震时获得的强震记录的长周期特性,利用差分进化算法标定了每条强震记录并给出了不同场地上的设计谱的特征参数;最后研究了阻尼折减系数与衰减指数随震级、震中距和场地类别的影响。结果表明,建筑抗震规范中的反应谱平台值与特征周期值明显偏小;阻尼折减系数与衰减指数不随这震级、震中距与场地这三个主要地震参数的变化而变化;最后根据统计分析给出了川滇甘陕地区的阻尼折减系数与衰减指数建议公式。本文的研究将为我国抗震规范的相关修订提供了一定的参考。
Abstract:
The damping reduction factor is an elastic response spectrum with a damping ratio of 5% for building aseismic correction.Based on the long period characteristics of strong motion records obtained in the past 20 years in Sichuan, Yunnan and Gansu, Shaanxi Province,each strong earthquake record is calibrated by differential evolution algorithm and the characteristic parameters of design spectrum on different sites are given.Finally, the influence of damping reduction factor and attenuation index on magnitude, epicentral distance and site type are studied.The results show that the response spectrum platform value and the characteristic cycle value of the building seismic code are obviously smaller.The damping reduction coefficient and attenuation index do not change with the magnitude, epicenter distance and site.Finally, according to the statistical analysis, the damping reduction coefficient and damping index formula in Sichuan-Yunnan-Gansu-Shanxi region are proposed. The research in this paper will provide some references for the revision of seismic codes of China.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2019-05-06;改回日期:2019-07-17。
基金项目:河北省教育厅高等学校科学研究计划项目(Z2019025,Z2019035);中央高校基本科研业务费青年教师资助计划项目(Z2019025,Z2019035);国家自然科学基金(51678539);黑龙江省"头雁"创新团队计划
作者简介:王振宇(1984-),男,讲师,博士,主要从事岩土工程抗震与地震动模拟研究.E-mail:soeso@163.com
通讯作者:赵培培(1984-),女,讲师,博士,主要从事岩土工程抗震研究.E-mail:zonpy@163.com
更新日期/Last Update: 1900-01-01