| 北京平原地区VS30估算模型适用性研究 |
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| 引用本文： | 江志杰,彭艳菊,方怡,吕悦军,修立伟,黄帅.北京平原地区VS30估算模型适用性研究[J].震灾防御技术,2018,13(1):75-86. |
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| 作者姓名： | 江志杰 彭艳菊 方怡 吕悦军 修立伟 黄帅 |
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| 作者单位： | 中国地震局地壳应力研究所, 北京 100085 |
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| 基金项目： | 中央级公益性科研院所基本科研业务专项（ZD2017-28），北京市自然科学基金项目（8174078）和北京市优秀人才项目（2015000057592G270）共同资助 |
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| 摘 要： | 本文使用基于钻孔测井数据的3类模型，即常速度外推模型、速度梯度模型、双深度参数外推模型，通过对北京地区460个深度超过30m的钻孔剪切波速资料进行分析，详细探究了VS30估算模型在本研究区的适用性。研究结果表明双深度参数外推模型在估算VS30上准确度很高，其不需要大量的数据进行回归分析，且不具有区域独立性，可以为全球包括北京地区场地类别划分提供依据，进而在震害快速评估中用于确定场地影响，是一种值得推广的估算模型。
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| 关 键 词： | 等效剪切波速 场地条件 VS30外推模型 北京平原区 |
| 收稿时间： | 2017/7/5 0:00:00 |
Applicability of VS30 Estimation Models for the Beijing Plain Area |
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| Jiang Zhijie,Peng Yanju,Fang Yi,Lv Yuejun,Xiu Liwei and Huang Shuai.Applicability of VS30 Estimation Models for the Beijing Plain Area[J].Technology for Earthquake Disaster Prevention,2018,13(1):75-86. |
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| Authors: | Jiang Zhijie Peng Yanju Fang Yi Lv Yuejun Xiu Liwei and Huang Shuai |
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| Institution: | Institute of Crustal Dynamics, China Earthquake Administration, Beijing 100085, China |
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| Abstract: | Using three models i.e. bottom-layer constant velocity model, velocity gradient model and the extrapolation model with the travel-time averaged shear-wave velocities at two different depths, we investigated the data from 460 boreholes in Beijing plain area in which the shear-wave velocity profile reaches over 30m. Through the detailed research, we found that the last method can estimate VS30 with high accuracy, which does not need any regression analysis to derive empirical relations from a large number of data. Meanwhile, this method is not regionally dependent, and has a remarkable improvement in the accuracy. Therefore, it is potentially useful for many parts of the world including Beijing. It provides a basis for site classification, and then can extend the application to evaluation of site effect in a rapid assessment of earthquake damage, thus being worth to be extensively applied. |
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| Keywords: | Equivalent shear wave velocity Site condition Extrapolation models of VS30 Beijing plain area |
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