云南地区地震动V/H加速度峰值比和谱值比统计研究  

Statistical Research on V/H Acceleration Peak Ratio and Spectral Ratio of Ground Motion in Yunnan Area

作　　者：罗煜民 钱睿 雷真 

机构地区：[1]云南大学建筑与规划学院,云南 昆明

出　　处：《土木工程》2025年第1期70-77,共8页Hans Journal of Civil Engineering

基　　金：云南省应用基础研究计划面上项目(202201A070159)。

摘　　要：本文收集了云南地区共计620组的三分量加速度记录中的加速度峰值和加速度峰值比,按照场地条件、震中距、震级等因素统计分析了V/H加速度谱值比并给出了V/H谱值比的取值建议。结果表明:土层和基岩场地条件下V/H的均值并不相同,场地的软硬对V/H的数值变化影响较大;V/H地面峰值加速度的近场与远场处仅在I类场地下大于0.65,其余场地类型下均小于0.65;V/H的水平向和竖向反应谱谱值比是一个周期函数,竖谱值特征周期基本等于水平向反应谱特征周期,但在较长周期下速度慢于水平方向。This paper collected the peak acceleration and peak acceleration ratio from a total of 620 sets of three-component acceleration records in the Yunnan region. It statistically analyzed the V/H accele- ration spectrum value ratio based on factors such as site conditions, epicentral distance, and magnitude, and provided suggestions for the value range of the V/H spectrum ratio. The results indicate that the mean V/H values under soil and rock site conditions are not the same, and the stiffness of the site has a significant impact on the numerical variation of V/H;the near-field and far-field ground peak acceleration of V/H is only greater than 0.65 under Class I sites, and is less than 0.65 under all other site types;the horizontal and vertical response spectrum value ratios of V/H are periodic functions, with the vertical spectrum characteristic period essentially equal to the horizontal response spectrum characteristic period, but the velocity is slower than the horizontal direction at longer periods.

关 键 词：地震动 谱值比 场地条件 震中距 

分 类 号：O17[理学—数学]