水库地震的地震动特性  

Characteristic of ground motion of reservoir earthquake

作　　者：于海英[1] 公茂盛[1] 金波[1] 韦良杰[2] 毛国滨[1] 杨剑[1] 颜世菊[1] 

机构地区：[1]中国地震局工程力学研究所,黑龙江哈尔滨150080 [2]黑龙江省电力勘察设计研究院,黑龙江哈尔滨150010

出　　处：《自然灾害学报》2006年第5期188-193,共6页Journal of Natural Disasters

基　　金：中国地震局"十五"网络项目(950103)

摘　　要：利用新丰江、黄壁庄、喀什、龙羊峡、官厅、刘家峡和陡河等水库地震的近场地面运动资料,给出了水库地震地震动的峰值加速度衰减关系、频谱特性和持续时间。分析结果表明,较天然地震而言,水库地震的地面运动峰值加速度高,衰减快;地震动反应谱特征频率高,持续时间短;场地卓越周期以坚硬基岩的最短,硬土次之,软土最长。研究得到的水库地震的地震动衰减关系和频谱特性可为水工结构的抗震设计和加固提供借鉴。In this paper, the coefficient of ground motion attenuation, characteristic of spectrum, duration of reservoir earthquake are obtained by ground motion data of near field ground motion of Xinfengjiang Seservoir Earthquake etc. The analysis result indicates that peak ground acceleration, coefficient of ground motion attenuation and characteristic frequency of response spectrum of reservoir earthquake are larger than that of natural earthquake; duration of ground motion of reservoir earthquake is shorter than that of natural earthquake; and for reservoir earthquake, characteristic period of soft site is larger than that of rock site. The analysis result will give a reference to seismic design and reinforcement of hydraulic structures.

关 键 词：水库地震 地震动特性 反应谱 持时 

分 类 号：P315.9[天文地球—地震学]