预测北京地铁16号线振动对北京大学精密仪器的影响
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摘要
本文提出了模拟地铁环境振动的浮置板-隧道-地层三维有限元模型,振动源为实际观测的地铁钢轨振动加速度。本文旨在研究拟建的北京地铁16号线对200 m远处的北京大学场效应电子显微镜Tecnai F30(以下简称F30)工作可能造成的影响。为此,首先模拟了运营中的北京地铁4号线通过北京大学东门站对F30的影响,然后以与16号线相同车型、相同轨道半径的上海地铁7号线实测钢轨振动加速度作为振动源输入,模拟和预测了16号线地铁对F30工作可能造成的影响。结果表明:4号线模拟结果显示在140 m观测点无论单线还是双线运行,都有部分频段(3~5 Hz)进入F30的非工作区,而16号线在200 m远处仅是横向加速度在0~0.8 Hz和4~6 Hz范围进入非正常工作区,垂向加速度在5~6 Hz范围内进入非正常工作区。
In this paper,using observed accelerations from the rails of Beijing metro as vibration sources,we build a three-dimensional metro model containing floating slab-tunnel-formation system to study the influence of the surface vibration caused by the proposed Beijing subway line 16 on a high precision electron microscope,Tecnai F30( hereinafter referred to as the F30),of Peking University,which is about 200 m from the rail alignment. To do this,firstly,we simulate the vibration of Beijing metro line 4 passing through the east gate of Peking University station and its influence on the F30,and then the acceleration measurements of the Shanghai metro line 7 is selected as vibration source for the proposed Beijing subway line 16 model in consideration of that they have the same orbit radius of rail and the same vehicle model. The results show that: the simulation results of the metro line 4 show that at 140 m observation point,no matter single or double operation,there are part of the spectrum( 3 ~ 5 Hz) to get into the F30 non-working range,and for the 16 line at the distance of 200 m,there is only part of the spectrum getting into the abnormal-working range: the horizontal acceleration at 0 ~ 0. 8 Hz and 4 ~ 6 Hz and the vertical acceleration at 5 ~ 6 Hz are in the abnormal-working range of the F30,respectively.
In this paper,using observed accelerations from the rails of Beijing metro as vibration sources,we build a three-dimensional metro model containing floating slab-tunnel-formation system to study the influence of the surface vibration caused by the proposed Beijing subway line 16 on a high precision electron microscope,Tecnai F30( hereinafter referred to as the F30),of Peking University,which is about 200 m from the rail alignment. To do this,firstly,we simulate the vibration of Beijing metro line 4 passing through the east gate of Peking University station and its influence on the F30,and then the acceleration measurements of the Shanghai metro line 7 is selected as vibration source for the proposed Beijing subway line 16 model in consideration of that they have the same orbit radius of rail and the same vehicle model. The results show that: the simulation results of the metro line 4 show that at 140 m observation point,no matter single or double operation,there are part of the spectrum( 3 ~ 5 Hz) to get into the F30 non-working range,and for the 16 line at the distance of 200 m,there is only part of the spectrum getting into the abnormal-working range: the horizontal acceleration at 0 ~ 0. 8 Hz and 4 ~ 6 Hz and the vertical acceleration at 5 ~ 6 Hz are in the abnormal-working range of the F30,respectively.
引文
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[12]李德武.列车振动荷载的数定分析[J].甘肃科学学报.1998,10(2):25-29.LI Dewu.A deterministic analysis of dynamic train loading[J].Journal of Gansu sciences,1998,10(2):25-29.(in Chinese)
[13]张玉娥,潘昌实.地铁区间隧道列车振动响应测试与数值分析[J].石家庄铁道学院学报,1993,6(2):7-14.ZHANG Yu’e,PAN Changshi.Tests and analyses of the dynamic response of tunnels subjected to passing train load[J].1993,6(2):7-14.(in Chinese)
[14]王祥秋,杨林德,高文华.铁路隧道提速列车振动测试与荷载模拟[J].振动与冲击,2005,24(3):99-103.WANG Xiangqiu,YANG Linde,GAO Wenhua.In situ vibration measurement and load simulation of the raising speed train in railway tunnel[J].Journal of Vibration and Shock,2005,24(3):99-103.(in Chinese)
[15]Bathe K J.Finite element procedures[M].1982,Prentice Hall,Upper Saddle River,USA.
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[2]张向东,高捷,闫维明.环境振动对人体健康的影响[J].环境与健康杂志,2008,25(1):74-76.ZHANG Xiangdong,GAO Jie,YAN Weiming.Effects of environmental vibration on human health[J].Environ Health,2008,25(1):74-76.(in Chinese)
[3]马筠.铁路环境噪声对人群影响的社会调查方法[J].铁道劳动安全卫生与环保,2003,30(5):209-211.MA Jun.The discussion on the social survey method for resident effected by railway environment noise[J].Railway Occupational Safety Health&Environmental Protection,2003,30(5):209-211.(in Chinese)
[4]崔高航,陶夏新,陈宪麦.城轨交通引起的环境振动问题综述研究[J].地震工程与工程振动,2008,28(1):38-43.CUI Gaohang,TAO Xiaxin,CHEN Xianmai.Studies on environmental vibration induced by urban rail transit[J].Journal of Earthquake Engineering and Engineering Vibration,2008,28(1):38-43.(in Chinese)
[5]S.Wolf.Potential low frequency ground vibration(<6.3 Hz)impacts from underground LRT operations[J].Journal of Sound and Vibration,2003,267:651-661
[6]栗润德,张鸿儒,刘维宁.地铁引起的地面振动及其对精密仪器的影响[J].岩石力学与工程学报,2008,27(1):206-214.LI Runde,ZHANG Hongru,LIU Weining.Metro-induced ground vibrations and their impacts on precision instrument[J].Chinese Journal of Rock Mechanics and Engineering,2008,27(1):206-214.(in Chinese)
[7]马蒙,刘维宁,丁德云,等.地铁列车振动对精密仪器影响的预测研究[J].振动与冲击,2011,30(3):185-190.MA Meng,LIU Weining,DING Deyun,et al.Prediction of influence of metro trains induced vibrations on sensitive instruments[J].Journal of Vibration and Shock,2011,30(3):185-190.(in Chinese)
[8]张鹏飞,雷晓燕,高亮,等.铁路环境振动对厂房内精密仪器的影响分析[J].振动与冲击,2013,32(16):187-192.ZHANG Pengfei,LEI Xiaoyan,GAO Liang,et al.Effect of railway environment vibration on precision instruments inside the plant[J].Journal of Vibration and Shock,2013,32(16):187-192.(in Chinese)
[9]梁波,蔡英.不平顺条件下高速铁路路基的动力分析[J].铁道学报,1999,21(2):84-88.LIANG Bo,CAI Ying.Dynamic analysis on subgrade of high speed railways in geometric irregular condition[J].Journal of the China Railway Society,1999,21(2):84-88.(in Chinese)
[10]刘维宁,夏禾,郭文军.地铁列车振动的环境响应[J].岩石力学与工程学报,1996,15(S):586-593.LIU Weining,XIA He,GUO Wengjun.Study of vibration effects of underground trains on surrounding environments[J].Chinese Journal of Rock Mechanics and Engineering,1996,15(s):586-593.(in Chinese)
[11]刘卫丰,刘维宁,Degande G.地铁列车运行引起地表振动的预测模型及其试验验证[J].振动工程学报,2010,23(4):373-379.LIU Weifeng,LIU Weining,DEGRANDE G.Experimental validation of a numerical model for prediction of metro train-induced ground-surface vibration[J].Journal of Vibration Engineering,2010,23(4):373-379.(in Chinese)
[12]李德武.列车振动荷载的数定分析[J].甘肃科学学报.1998,10(2):25-29.LI Dewu.A deterministic analysis of dynamic train loading[J].Journal of Gansu sciences,1998,10(2):25-29.(in Chinese)
[13]张玉娥,潘昌实.地铁区间隧道列车振动响应测试与数值分析[J].石家庄铁道学院学报,1993,6(2):7-14.ZHANG Yu’e,PAN Changshi.Tests and analyses of the dynamic response of tunnels subjected to passing train load[J].1993,6(2):7-14.(in Chinese)
[14]王祥秋,杨林德,高文华.铁路隧道提速列车振动测试与荷载模拟[J].振动与冲击,2005,24(3):99-103.WANG Xiangqiu,YANG Linde,GAO Wenhua.In situ vibration measurement and load simulation of the raising speed train in railway tunnel[J].Journal of Vibration and Shock,2005,24(3):99-103.(in Chinese)
[15]Bathe K J.Finite element procedures[M].1982,Prentice Hall,Upper Saddle River,USA.
[16]Miguel Hermanns.Parallel Programming in Fortran 95 using Open MP[M].2002.
[17]梁国平.有限元语言[M].北京:科学出版社,2009.LIANG Guoping.Finite Element Language[M].Beijing:Scince Press,2009.(in Chinese)
[18]白冰,李小春.FEPG有限元应用深入剖析[M].北京:清华大学出版社,2011.BAI Bing,LI Xiaochun.Application and Detection of FEPG Finite Element[M].Beijing:Tsinghua University Press,2001.(in Chinese)
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