地铁交通对某实验楼的环境振动的模拟分析
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摘要
在地铁隧道附近,对于环境振动要求较高的特殊建筑物和精密仪器,地铁列车走行时引起的振动影响不容忽视。基于动力反应分析理论,通过建立有限元模型,并以实际测得的列车走行时地铁和轻轨在路基附近的加速度波形作为振动输入,模拟分析了正在规划修建的北京地铁8号线开通后将对附近某实验大楼内仪器可能造成的振动影响,同时对实验楼附近地铁振动的衰减规律进行了初步分析,为实验楼和仪器台是否应采取避振措施提供了参考依据。
Nearby subway tunnel,the vibration impact induced by subway transit on the precision instruments and the special buildings can not be ignored,which are sensitive to the environmental vibration.In this paper,based on the dynamic response analysis theory,the finite element model the special building is established,and the actual measured acceleration waves in the roadbed nearby the subway and light rail,which are induced by running train,are used as the vibration input,during constructing Beijing 8th line subway vibration impact on instruments within laboratory building is simulated and analyzed,meanwhile the subway vibration attenuation law nearby laboratory building is analyzed.The paper provides the reference to decide whether the laboratory building and instruments should take the avoiding vibration and reducing vibration measures.
Nearby subway tunnel,the vibration impact induced by subway transit on the precision instruments and the special buildings can not be ignored,which are sensitive to the environmental vibration.In this paper,based on the dynamic response analysis theory,the finite element model the special building is established,and the actual measured acceleration waves in the roadbed nearby the subway and light rail,which are induced by running train,are used as the vibration input,during constructing Beijing 8th line subway vibration impact on instruments within laboratory building is simulated and analyzed,meanwhile the subway vibration attenuation law nearby laboratory building is analyzed.The paper provides the reference to decide whether the laboratory building and instruments should take the avoiding vibration and reducing vibration measures.
引文
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[9]刘维宁,夏禾,郭文军.地铁列车振动的环境影响[J].岩石力学与工程学报,1996,15(10):586-593.
[2]楼梦麟,李守继.地铁引起建筑物振动评价研究[J].振动与冲击,2007,26(8):68-71.
[3]王逢朝,夏禾,张鸿儒.地铁列车振动对邻近建筑物的影响[J].北方交通大学学报,1999,23(5):45-48.
[4]张曦,康益群,周念清,等.地铁振动荷载作用下隧道周围饱和软黏土动力响应研究[J].土木工程学报,2007,40(2):85-88.
[5]孙晓静,刘维宁,郭建平,等.地铁列车振动对精密仪器和设备的影响及减振措施[J].中国安全科学学报,2005,15(11):78-81.
[6]谢伟平,孙洪刚.地铁运行时引起的土的波动分析[J].岩石力学与工程学报,2003,22(7):1180-1184.
[7]陶连金,李晓霖,陆熙,等.地铁诱发地面运动的衰减规律的研究分析[J].世界地震工程,2003,19(1):84-87.
[8]洪俊青,刘伟庆.地铁对周边建筑物振动影响分析[J].振动与冲击,2006,25(4):142-145.
[9]刘维宁,夏禾,郭文军.地铁列车振动的环境影响[J].岩石力学与工程学报,1996,15(10):586-593.
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