唐山地震高烈度区V_(s30)经验估计研究  

Empirical Estimation of V_(s30) in High Intensity Area of Tangshan Earthquake

作　　者：吴连斌 兰景岩 蔡金豆[1] 史庆旗 WU Lianbin;LAN Jingyan;CAI Jindou;SHI Qingqi(College of Civil Engineering and Architecture,Guilin University of Technology,Guilin 541004,China;Guangxi Key Laboratory of Geomechanics and Geotechnical Engineering,Guilin University of Technology,Guilin 541004,China)

机构地区：[1]桂林理工大学土木与建筑工程学院,广西桂林541004 [2]桂林理工大学广西岩土力学与工程重点实验室,广西桂林541004

出　　处：《防灾减灾工程学报》2022年第6期1280-1286,共7页Journal of Disaster Prevention and Mitigation Engineering

基　　金：国家自然科学基金项目(52168067);广西高等学校千名中青年骨干教师培育计划项目(2020);广西岩土力学与工程重点实验室开放基金(桂科能19-Y-21-4)资助。

摘　　要：以唐山地震高烈度区场地条件为背景,选取并整理其中701个实际钻孔的剪切波速测试资料,分别计算国际上较普遍采用的场地分类指标V_(se)和V_(s30),初步建立了适用于唐山地区V_(se)与V_(s30)的对应关系,利用Boore提出的速度梯度外推法,回归得到了唐山地区Vs30的经验模型与拟合参数,并与四个地区(北京、新疆乌鲁木齐、加利福尼亚、日本KiK-net)的经验公式进行了对比。结果表明,场地分类指标V_(se)和V_(s30)之间具有强相关性,不同地区数据回归得到的经验公式能够得到很好的预测结果,也能对场地类别相近地区的剪切波速模型预测提供参考。Based on the site conditions in the high intensity area of Tangshan earthquake,shear wave velocity test data from 701 field drill holes were selected and used to calculate the commonly used site classification indexes of V_(se)and V_(s30)respectively.Then the corresponding relationship between V_(se)and V_(s30)for the Tangshan area was initially established.Using the velocity gradient extrapolation method proposed by Boore,the empirical model and fitting parameters of V_(s30)in the Tangshan area were calculated by regression,and the results obtained by empirical models in four regions(Beijing,Xinjiang Urumqi,California,Japan KiK-net)were compared.The results show that there is a strong correlation between the site classification indexes V_(se)and V_(s30),and the empirical formulas obtained from data regression in different regions can get good prediction results,and can also provide references for the prediction of shear wave velocity models in areas with similar site categories.

关 键 词：唐山地区 V_(s30)估计 场地分类 等效剪切波速 

分 类 号：P315.9[天文地球—地震学]