| 高架桥下方高铁地震波场的特征量提取 |
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| 引用本文： | 鲍铁钊,宁杰远,张献兵.高架桥下方高铁地震波场的特征量提取[J].北京大学学报(自然科学版),2019,55(5):839-849. |
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| 作者姓名： | 鲍铁钊 宁杰远 张献兵 |
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| 作者单位： | 北京大学地球与空间科学学院, 北京 100871;高铁地震学联合研究组, 北京 100029;北京大学地球与空间科学学院,北京,100871 |
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| 基金项目： | 国家自然科学基金(41874071)资助 |
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| 摘 要： | 通过互相关方法, 提取高铁列车经过前后沿着高铁桥梁传播的地震波信号。将不同车次的互相关函数叠加, 得到稳定的平均互相关函数, 可以作为高铁地震波场的特征量。该特征量有监测高铁桥梁结构变化的潜力。
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| 关 键 词： | 高铁地震波场 互相关函数 被动监测 |
| 收稿时间： | 2019-07-14 |
Extraction of Characteristics of Wavefield under ViaductProduced by High-Speed Rail |
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| BAO Tiezhao,NING Jieyuan,ZHANG Xianbing.Extraction of Characteristics of Wavefield under ViaductProduced by High-Speed Rail[J].Acta Scientiarum Naturalium Universitatis Pekinensis,2019,55(5):839-849. |
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| Authors: | BAO Tiezhao NING Jieyuan ZHANG Xianbing |
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| Institution: | 1. School of Space and Earth Sciences, Peking University, Beijing 100871
2. The Joint Research Group on High-Speed Rail Seismology, Beijing 100029 |
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| Abstract: | The seismic signal propagating along the viaduct of a high-speed rail when the train is approaching ordeparting is extracted by cross-correlation method. Stable average cross-correlation function can be obtained bystacking the cross-correlation functions of different trains. The average cross-correlation function can be used asthe characteristic quantity of the wavefield produced by high-speed rail. This quantity has potential to monitor thestructural changes of the high-speed rail viaduct. |
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| Keywords: | wavefield of high-speed railway cross-correlation function passive monitoring |
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