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

作　　者：肖武军[1] 赵楠[2] 李小军[3] 赵刚 刘泉[5] 曲利[6] 骆佳骥[2] XIAO Wu-jun;ZHAO Nan;LI Xiao-jun;ZHAO Gang;LIU Quan;QU Li;LUO Jia-ji(China Earthquake Networks Center,Beijing 100045,China;Anhui Earthquake Agency,Hefei 230031,China;Hebei Earthquake Agency,Shijiazhuang 050021,China;National Institute of Natural Hazards,Beijing 100085,China;The Institute of Engineering Mechanics,CEA,Haerbin 150080,China;Shandong Earthquake Agency,Jinan 250014,China)

机构地区：[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

出　　处：《地震》2021年第4期158-167,共10页Earthquake

基　　金：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。

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。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 thanⅦ.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.

关 键 词：地震计 防震加固装置 标准化 试验 

分 类 号：P315.7[天文地球—地震学]