基于V_(s30)和场地沉积层厚度的双参数剪切波速预测模型  

Bi-parametric Shear Wave Velocity Prediction Model Based on Vs30 and Site Sediment Layer Thicknes

作　　者：袁清驰 张齐 黄颖婷 唐俭政 褚超 谢艳芳 彭刚[1] YUAN Qingchi;ZHANG Qi;HUANG Yingting;TANG Jianzheng;CHU Chao;XIE Yanfang;PENG Gang(College of Civil Engineering and Architecture,China Three Gorges University,Yichang 443002,China;Zhejiang Huadong Engineering Consulting Co.,Ltd.,Hangzhou 311100,China)

机构地区：[1]三峡大学土木与建筑学院,湖北宜昌443002 [2]浙江华东工程咨询有限公司,杭州311100

出　　处：《三峡大学学报（自然科学版）》2024年第6期51-56,64,共7页Journal of China Three Gorges University：Natural Sciences

基　　金：国家自然科学基金面上项目(52079072)。

摘　　要：场地土波速剖面是地震工程研究中的重要基础资料.本文基于371个KiK-Net台站钻孔资料,借助机器学习方法,统计分析了浅地表场地平均剪切波速Vs30和场地沉积层厚度Z1.1与场地土剪切波速剖面的相关性,建立了考虑浅地表波速特征参数和场地沉积层厚度的双参数剪切波速剖面预测模型.利用实际钻孔数据对模型预测的可靠性进行了检验,并采用138个美国西部剪切波速剖面数据对模型的泛化能力进行了检验.结果表明,相比于传统单一参数波速剖面预测模型,本文模型针对深厚沉积层场地具有更好的预测效果.The soil velocity profile of the site is an important basic data in the study of earthquake engineering.Based on the drilling data of 371 KiK-Net stations and the machine learning method,this paper statistically analyzes the correlation of the average shear wave velocity Vs30 of shallow surface site and the Z1.1 of site sediment layer thickness with the site soil shear wave velocity profile,and establishes a bi-parameter shear wave velocity profile prediction model considering the characteristic parameters of shallow surface wave velocity and site sedimentary layer thickness.The reliability of the model prediction was tested by using the actual drilling data,and the generalization ability of the model was tested by using 138 shear wave velocity profiles in the western United States.The results show that compared with the traditional single-parameter wave velocity profile prediction model,the proposed model has a better prediction effect for deep sedimentary layer sites.

关 键 词：数值模拟 场地效应 地震 剪切波速 

分 类 号：TU435[建筑科学—岩土工程]