地铁运行振动对邻近民国建筑的影响
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摘要
以南京地铁1号线某区段邻近民国建筑为研究对象,现场实测地铁运行通过时引起的地面振动加速度,分析振动响应在时域和频域内的传播规律,并以Z振级为评价指标,评估地铁运行振动对邻近民国建筑的影响。测试结果表明:地铁运行引起的地面振动以竖向为主,振动量随与地铁线路距离增大呈波浪式衰减,在近场区域某一距离处达到最大值,在远场区域逐渐衰减并趋于稳定;地铁运行引发的振动响应主要集中在50～80 Hz,且对应的分频振级衰减较快;地铁附近部分区域Z振级已超过环境控制标准。研究成果对地铁线路邻近民国建筑的保护提供了一定的参考,同时有助于研究地铁运行振动对沿线周边环境的影响。
Taking the buildings of Republic China near the section of Nanjing metro line 1 as the object,the ground vibration acceleration caused by the metro running was measured,and the propagation law of the vibration response in the time domain and the frequency domain was analyzed by taking the Z vibration level as the evaluation index to assess the influence of metro running vibration on neighboring buildings.Results showed that the ground vibration caused by the metro running was mainly in the vertical direction,the amount of vibration was wave attenuation with the increase of the distance from the metro line,reaching the maximum at a certain distance in the near field,and gradually decaying and stabilizing in the far field.The vibration response was mainly concentrated at 50-80 Hz,and the corresponding decaying stage decayed faster.The Z vibration level in some areas near the metro had exceeded the environmental control level.The results provided some reference for the protection of the buildings near the metro line,and were beneficial for studying the influence of metro running vibration on the surrounding environment.
Taking the buildings of Republic China near the section of Nanjing metro line 1 as the object,the ground vibration acceleration caused by the metro running was measured,and the propagation law of the vibration response in the time domain and the frequency domain was analyzed by taking the Z vibration level as the evaluation index to assess the influence of metro running vibration on neighboring buildings.Results showed that the ground vibration caused by the metro running was mainly in the vertical direction,the amount of vibration was wave attenuation with the increase of the distance from the metro line,reaching the maximum at a certain distance in the near field,and gradually decaying and stabilizing in the far field.The vibration response was mainly concentrated at 50-80 Hz,and the corresponding decaying stage decayed faster.The Z vibration level in some areas near the metro had exceeded the environmental control level.The results provided some reference for the protection of the buildings near the metro line,and were beneficial for studying the influence of metro running vibration on the surrounding environment.
引文
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[3]陈国兴,苏晓梅,陈斌.地铁列车运行引起的环境振动评价[J].防灾减灾工程学报,2008,28(1):70.
[4] SCHILLEMANS L. Impact of sound and vibration of the northsouth high-speed railway connection through the city of Antwerp Belgium[J].Journal of sound&vibration,2003,267(3):637.
[5]贾颖绚,郭猛,刘维宁,等.列车振动荷载对古建筑的动力影响[J].北京交通大学学报,2009,33(1):118.
[6]李克飞,刘维宁,刘卫丰,等.交通振动对邻近古建筑的动力影响测试分析[J].北京交通大学学报,2011,35(1):79.
[7]董霜,朱元清.地铁振动环境及对建筑影响的研究概况[J].噪声与振动控制,2004,24(2):1.
[8]中华人民共和国住房和城乡建设部.城市轨道交通引起建筑物振动与二次辐射噪声限值及其测量方法标准:JGJ/T 170—2009[S].北京:中国建筑工业出版社,2009.
[9]王田友.地铁运行所致环境振动与建筑物隔振方法研究[D].上海:同济大学,2007.
[10]翟婉明.车辆-轨道耦合动力学(3版)[M].北京:科学出版社,2007.
[11]刘维宁,马蒙.地铁列车振动环境影响的预测、评估与控制[M].北京:科学出版社,2014.
[12]王文斌.基于脉冲实验的地铁环境振动响应传递函数预测方法研究[D].北京:北京交通大学,2011.
[13]孙晓静.地铁列车振动对环境影响的预测研究及减振措施分析[D].北京:北京交通大学,2008.
[14]熊超华,雷晓燕.地铁运营诱发的环境振动对南昌八一起义纪念馆的影响分析[J].城市轨道交通研究,2015,18(11):68.
[15]邹超,汪益敏,汪朝晖,等.地铁车辆段咽喉区地面振动传播规律实测与分析[J].振动与冲击,2015,34(16):200.
[16]国家环境保护局.城市区域环境振动标准:GB 10070—88[S].北京:[s.n.],1988.
[17]中华人民共和国建设部,中华人民共和国国家质量监督检验检疫总局.住宅建筑室内振动限值及其测量方法标准:GB/T50355—2005[S].北京:中国建筑工业出版社,2005.