[1]孙晓丹,李宇盎.基于NGA强震数据的地震动显著持时研究[J].地震工程与工程振动,2019,39(01):070-79.[doi:10.13197/j.eeev.2019.01.70.sunxd.009]
 SUN Xiaodan,LI Yuang.On significant duration of records from NGA strong ground motion database[J].EARTHQUAKE ENGINEERING AND ENGINEERING DYNAMICS,2019,39(01):070-79.[doi:10.13197/j.eeev.2019.01.70.sunxd.009]
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基于NGA强震数据的地震动显著持时研究
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《地震工程与工程振动》[ISSN:/CN:]

卷:
39
期数:
2019年01
页码:
070-79
栏目:
论文
出版日期:
2019-02-28

文章信息/Info

Title:
On significant duration of records from NGA strong ground motion database
作者:
孙晓丹 李宇盎
西南交通大学 土木工程学院, 四川 成都 610031
Author(s):
SUN Xiaodan LI Yuang
School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China
关键词:
地震动显著持时回归NGA-EastNGA-West2
Keywords:
ground motionsignificant durationregressionNGA-EastNGA-West2
分类号:
P315.9
DOI:
10.13197/j.eeev.2019.01.70.sunxd.009
摘要:
持时对工程场地或构筑物的非线性地震响应存在显著影响,但目前有关地震动持时的研究相对振幅与频谱的研究较少。本文基于太平洋地震工程中心的NGA-East强震数据库和NGA-West2强震数据库的地震动记录,对5%~95%显著持时进行了研究。分析了地震动两分量时程的显著持时差异及差异产生的原因,进而探讨了显著持时定义自身的缺陷。借助考虑随机效应的多参数非线性回归给出了NGA-East和NGA-West2数据的5%~95%显著持时的预测公式,可在适用的震级和断层距范围内为估计构造稳定区和构造活跃区的显著持时提供参考。
Abstract:
Duration of ground-motion has significant effect on nonlinear seismic response of structure and soil. However, research on ground-motion duration is relatively rare compared with that on amplitude and spectrum. In this paper, 5%~95% significant duration are calculated for the records from the NGA-East and NGA-West2 strong ground motion database from the Pacific Earthquake Engineering Center (PEER). The difference of the significant durations of the two horizontal components are analyzed. It is also revealed that the definition of significant duration is the fundamental reason for the difference. By using a multi-parameter nonlinear regression, considering random effects, the prediction equations for the 5%~95% significant duration for the NGA-East and NGA-West2 data are derived, which provides a references for estimating significant duration in tectonic stable and active regions.

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备注/Memo

备注/Memo:
收稿日期:2018-04-10;改回日期:2018-11-03。
基金项目:国家自然科学基金项目(51878578)
作者简介:孙晓丹(1980-),女,副教授,博士,主要从事工程地震危险性研究.E-mail:sunxd@swjtu.edu.cn
更新日期/Last Update: 1900-01-01