地震研究

为评价使用各种方法获得地震动加速度时程与区域内地震动加速度时程观测资料的一致性,提出一种能够综合时频特性的地震动时程一致性评价指标及其相对性判据,该方法可以量化分析待评价地震动时程对区域构造信息的反映能力。通过评价唐山地区陡河地震台和四座楼地震台模拟结果与实际观测结果的一致性,给出了实用化的算例。

To evaluate the consistence of the seismic ground acceleration time history between by use of different method and regional observation,we put forward a kind of assessment index of the consistence of the seismic ground time history which could synthesize the time-frequency characteristics and its relative consistency criterion. This method could quantitatively analyze the reflection ability of evaluated seismic ground time history on the regional tectonic information. We compared the simulation result with the realistic observation result of Tangshan M4.7 earthquake in 2012 recorded by Douhe Station and Sizuoluo Station in Tangshan area,and gave a practical example.

引言
1 区域构造信息反映能力综合评价指标构建
2 判据构建方法和应用算例
3 结论

表1 拟用地震动参数表<br/>Tab.1 The strong ground motion parametres to be used

表1 拟用地震动参数表
Tab.1 The strong ground motion parametres to be used

表2 频带划分情况<br/>Tab.2 The division of frequency band

表2 频带划分情况
Tab.2 The division of frequency band

表3 一致度分项指标Ci<br/>Tab.3 Subentry indexes of the consistence Ci

表3 一致度分项指标Ci
Tab.3 Subentry indexes of the consistence Ci

表4 2000年1月以来唐山地区M≥3.0地震目录<br/>Tab.4 M≥3.0 earthquake catalogue in Tangshan area since Jan.,2000

表4 2000年1月以来唐山地区M≥3.0地震目录
Tab.4 M≥3.0 earthquake catalogue in Tangshan area since Jan.,2000

图1 唐山地区测震台站和2000年1月以来研究区M≥3.0地震震中分布示意图<br/>Fig.1 Seismic station and epicenter distribution of M≥3.0 earthquakes in Tangshan area since Jan., 2000

图1 唐山地区测震台站和2000年1月以来研究区M≥3.0地震震中分布示意图
Fig.1 Seismic station and epicenter distribution of M≥3.0 earthquakes in Tangshan area since Jan., 2000

图2 唐山地区目标地震动总体一致度指标SZ的积累分布曲线<br/>Fig.2 Cumulative distribution curve of general consistence index SZ of the target ground motion in Tangshan area

图2 唐山地区目标地震动总体一致度指标SZ的积累分布曲线
Fig.2 Cumulative distribution curve of general consistence index SZ of the target ground motion in Tangshan area

图3 陡河台(DOH)地震动时程模拟值(a)、观测值(b)以及陡河台(DOH)、四座楼(SZL)总体一致情况(c)<br/>Fig.3 Simulation value(a)and observation value(b)of ground motion accelation time history at Duhe station and general consistence of Duhe and Sizuo lou stations(c)

图3 陡河台(DOH)地震动时程模拟值(a)、观测值(b)以及陡河台(DOH)、四座楼(SZL)总体一致情况(c)
Fig.3 Simulation value(a)and observation value(b)of ground motion accelation time history at Duhe station and general consistence of Duhe and Sizuo lou stations(c)

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备注

引言

1 区域构造信息反映能力综合评价指标构建

2 判据构建方法和应用算例

3 结论

期刊信息