| 地铁运行引起的地面振动实测及传播规律分析 |
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| 引用本文： | 楼梦麟,贾旭鹏,俞洁勤.地铁运行引起的地面振动实测及传播规律分析[J].地震学刊,2009(3):282-288. |
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| 作者姓名： | 楼梦麟 贾旭鹏 俞洁勤 |
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| 作者单位： | 同济大学土木工程防灾国家重点实验室,上海200092 |
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| 基金项目： | 基金项目：上海市科委基础研究项目（07JC14051）资助 |
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| 摘 要： | 对地铁线路某区间段的地面振动进行实测，采集不同测线和不同测点处的水平方向、竖直方向加速度，并转化为傅里叶幅值谱对其进行衰减规律分析。利用公式将加速度记录换算为振级和分频振级，参照相关的国家标准分析不同距离处的振级和频率成分。对比同一加速度记录中的两对开方向列车引起的地面振动，进一步分析振动衰减的规律。所得到的结果可供地面建筑的隔振减振及城市轨道的规划和设计参考。
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| 关 键 词： | 地铁振动 加速度衰减 加速度回升区 振动频率 |
Field Measurement and Analysis of Ground Vibration Induced by Subway Trains |
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| LOU Meng-lin,JIA Xu-peng,YU Jie-qin.Field Measurement and Analysis of Ground Vibration Induced by Subway Trains[J].Journal of Seismology,2009(3):282-288. |
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| Authors: | LOU Meng-lin JIA Xu-peng YU Jie-qin |
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| Institution: | (State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China) |
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| Abstract: | Obtained in a vibration test on a road section along a subway in Shanghai, the horizontal and vertical accelerations on test lines and at test points are presented in this paper. They have been changed to vibration grades, compared with the national standard, and analyzed the composition of vibration frequencies. The accelerations induced by trains in opposite ways were compared to analyze the regularity of vibration attenuation. The result can provide a reference for the isolation and reduction of vibrations in buildings and the planning and designing of urban rails. |
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| Keywords: | subway vibrations acceleration attenuation vibration amplification vibration frequency |
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