雄安新区v_(S30)经验估计研究  

Empirical estimation of v_(S30)in Xiong’an New Area

作　　者：张肖 张合 刘思宇 刘书峰 ZHANG Xiao;ZHANG He;LIU Siyu;LIU Shufeng(Faculty of Public Security and Emergency Management,Kunming University of Science and Technology,Kunming 650500,Yunnan,China;Xiong'an Earthquake Disaster Prevention Center,Xiong'an New Area 071700,Hebei,China;Earthquake Disaster Risk Prevention and Control Center of Hebei Province,Shijiazhuang 050021,Hebei,China)

机构地区：[1]昆明理工大学公共安全与应急管理学院,云南昆明650500 [2]雄安新区震灾预防中心,河北雄安新区071700 [3]河北省震灾风险防治中心,河北石家庄050021

出　　处：《地震工程学报》2022年第5期1160-1168,1184,共10页China Earthquake Engineering Journal

基　　金：河北省地震科技星火计划攻关项目(DZ202108090115);河北省科技厅重点研发计划项目(18275404D)。

摘　　要：选用国际最常见的v_(S30)经验估算模型(常速度外推模型、速度梯度外推模型、双深度参数模型),利用雄安新区435个剪切波速剖面达30 m的钻孔数据,计算估算值v_(SE30)和实测值v_(S30)的相关性、v_(SE30)的相对误差,验证经验估算模型的适用性。结果表明:双深度参数模型不需要对大量场地数据做回归分析,没有区域依赖性,准确度也有显著提高。该模型更适用于雄安新区工程建设中v_(S30)的确定。The most common empirical estimation models of v_(S30)in the world were selected in this study,namely,the bottom-layer constant velocity model,the velocity gradient model,and the extrapolation model at two different depths.With the use of the data of 435 boreholes from Xiong’an New Area where the depth of shear wave velocity profile reaches at least 30 m,the correlation between the measured value(v_(S30))and the estimated value(v_(SE30)),as well as the relative error of v_(SE30),was calculated to verify the applicability of above models.Results show that the extrapolation model at two different depths does not need regression analysis from a large amount of site data.Thus,the model has no regional dependence and has a remarkable improvement in its accuracy.The extrapolation model at two different depths is more suitable for the determination of v_(S30)in Xiong’an New Area.

关 键 词：等效剪切波速 v_(S30)经验估算模型 适用性 

分 类 号：P315.9[天文地球—地震学]