地震台站标准化中地震计防震加固装置试验分析

doi:10.12196/j.issn.1000-3274.2021.04.012

地震 ›› 2021, Vol. 41 ›› Issue (4): 158-167.doi: 10.12196/j.issn.1000-3274.2021.04.012

地震台站标准化中地震计防震加固装置试验分析

肖武军¹, 赵楠², 李小军³, 赵刚⁴, 刘泉⁵, 曲利⁶, 骆佳骥²

1.中国地震台网中心, 北京 100045;
2.安徽省地震局, 安徽合肥 230031;
3.河北省地震局, 河北石家庄 050021;
4.应急管理部国家自然灾害防治研究所, 北京 100085;
5.中国地震局工程力学研究所, 黑龙江哈尔滨 150080;
6.山东省地震局, 山东济南 250014

收稿日期:2020-04-28 修回日期:2020-08-31 出版日期:2021-10-31 发布日期:2022-03-25
通讯作者: 赵楠,工程师。E-mail:zhaonan0925@sina.com
作者简介:肖武军(1976-),男,湖南涟源人,高级工程师,主要从事台网建设及地球物理观测研究。
基金资助:
2019年度重点地震台站优化改造项目; 2019年地震台站标准化改造专项

Test Analysis of the Shockproof Reinforcement of Seismometers in Earthquake Observation Station Standardization

XIAO Wu-jun¹, ZHAO Nan², LI Xiao-jun³, ZHAO Gang⁴, LIU Quan⁵, QU Li⁶, LUO Jia-ji²

1. China Earthquake Networks Center, Beijing 100045, China;
2. Anhui Earthquake Agency, Hefei 230031, China;
3. Hebei Earthquake Agency, Shijiazhuang 050021, China;
4. National Institute of Natural Hazards, Beijing 100085, China;
5. The Institute of Engineering Mechanics, CEA, Haerbin 150080, China;
6. Shandong Earthquake Agency, Jinan 250014, China

Received:2020-04-28 Revised:2020-08-31 Online:2021-10-31 Published:2022-03-25

摘要/Abstract

摘要： 本文根据地震观测台站标准化对地震计等专业设备开展防震加固的要求, 对地震传感器加装防震装置后开展振动台测试与台站观测数据一致性分析。振动台测试结果表明在振动台面出现PGA大于103.2 cm·s^-2时, 地震计出现了明显位移现象, 因此, 建议地处场地烈度大于Ⅶ度区台站地震计须加装防震装置; 我们采用平方相干方式对台站观测数据进行一致性分析, 通过频域与时域对近震和远震记录进行对比, 发现加装防震装置与未加防震装置地震计系统一致性无明显差异。

关键词: 地震计, 防震加固装置, 标准化, 试验

Abstract: In this paper, according to the requirements of earthquake observation stations standardization for the shockproof reinforcement of seismometers and other professional equipment. After the seismic sensors are equipped with shockproof reinforcement devices, the shaking table test and the consistency analysis of the stations observation data are carried out. In the shaking table test, the results show that when the PGA of the seismometer is greater than 103.2 cm·s^-2, the seismometer has obvious displacement. So it is recommended to install shockproof reinforcement device where the area with intensity is greater than Ⅶ. In the process of consistency analysis, we use the square coherence method to compare the near earthquake and far earthquake records in the frequency domain and time domain, the results show there is no significant difference in the consistency of seismometer system between the sensor with shockproof reinforcement device and without.

Key words: Seismometer, Shockproof device, Vibration table, Test

中图分类号:

P315.7

肖武军, 赵楠, 李小军, 赵刚, 刘泉, 曲利, 骆佳骥. 地震台站标准化中地震计防震加固装置试验分析[J]. 地震, 2021, 41(4): 158-167.

XIAO Wu-jun, ZHAO Nan, LI Xiao-jun, ZHAO Gang, LIU Quan, QU Li, LUO Jia-ji. Test Analysis of the Shockproof Reinforcement of Seismometers in Earthquake Observation Station Standardization[J]. EARTHQUAKE, 2021, 41(4): 158-167.

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地震台站标准化中地震计防震加固装置试验分析

Test Analysis of the Shockproof Reinforcement of Seismometers in Earthquake Observation Station Standardization

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