列车运行引起高层建筑物振动分析
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摘要
建立列车—轨道—路基—周围地层—建筑物系统空间动力分析模型。地基土与建筑物基础间分协调接触变形和弹性接触变形2种情况处理。利用"m"法计算弹性接触变形系数,进行2种接触情况下运行列车对附近建筑物的振动影响动力分析。结果表明:在运行列车作用下,考虑土—建筑物之间弹性相互作用时建筑物楼层的动力响应峰值比不考虑时低5~10 dB;轴重大的列车引起的建筑物振动响应较大;建筑物各楼层的峰值振动强度在总体上随楼层单调递增;峰值振动强度在车速较低时随车速提高而增大,但车速超过某一临界值时,趋势发生改变。
In this paper,a space dynamic analysis model of train-track-roadbed-soil-building is presented,in which two types of contact conditions,compatibility contact deformation and elastic contact deformation,are considered in the contact between soil and building foundation.By using the "m" method to compute the elastic contact deformation coefficient and the general laws of building vibrations induced by moving trains can be obtained under two conditions.The results show that the maximum vibration level of building floors can decrease by 5～10 dB when the elastic contact interaction between soil and structure is taken into account.The vibration levels of building floors ascend with the increase of floor numbers,and trains with heavier axle loads induce bigger vibrations than those with lighter ones.The maximum vibration level ascends with train speed in low speed range,but this trend changes when train speed exceeds a certain value.
In this paper,a space dynamic analysis model of train-track-roadbed-soil-building is presented,in which two types of contact conditions,compatibility contact deformation and elastic contact deformation,are considered in the contact between soil and building foundation.By using the "m" method to compute the elastic contact deformation coefficient and the general laws of building vibrations induced by moving trains can be obtained under two conditions.The results show that the maximum vibration level of building floors can decrease by 5～10 dB when the elastic contact interaction between soil and structure is taken into account.The vibration levels of building floors ascend with the increase of floor numbers,and trains with heavier axle loads induce bigger vibrations than those with lighter ones.The maximum vibration level ascends with train speed in low speed range,but this trend changes when train speed exceeds a certain value.
引文
[1]夏禾,曹艳梅.轨道交通引起的环境振动问题[J].铁道科学与工程学报,2004,1(1):44-51.(XIA He,CAO Yanmei.Problem of Railway Traffic Induced Vibrations of Environments[J].Journal of RailwayScience and Engineering,2004,1(1):44-51.in Chinese)
[2]XIA He,ZHANG Nan,CAO Yanmei.Experimental Study of Train-Induced Vibrations of Environments and Build-ings[J].Sound&Vibration,2005(280):1017-1029.
[3]LINCY P,DEGRANDE G.Numerical Modeling of Traffic Induced Vibrations in Building Based on a Dynamic Soil-Structure Interaction Formumation[C]//Proceeding of the 15th ASCE Engineering Mechanics.New York:2002,Ⅱ:2-5.
[4]粟润德,刘维宁,张鸿儒.区间地铁列车振动的地面响应测试分析[J].中国铁道科学,2008,29(1):120-126.(LI Runde,LIU Weining,ZHANG Hongru.Test Analysis of Metro Induced Ground Vibrations at Interval[J].China Railway Science,2008,29(1):120-126.in Chinese)
[5]夏禾,张楠.车辆与结构动力相互作用[M].2nd.北京:科学出版社,2005.57-68.
[6]陈上有,夏禾,战家旺.变速移动荷载作用下简支梁的动力响应分析[J].中国铁道科学,2007,28(6):41-46.(CHEN Shangyou,XIA He,ZHAN Jiawang.Dynamic Response Analysis of Simply-Supported Beam under Speed-Varying Loads[J].China Railway Science,2007,28(6):41-46.in Chinese)
[7]李培振,吕西林.考虑土—结构相互作用的高层建筑抗震分析[J].地震工程与工程振动,2004,24(3):131-138.(LI Peizhen,L Xilin.Numerical Analysis of Tall Buildings Considering Dynamic Soil-Structure Interaction[J].Earthquake Engineering and Engineering Vibration,2004,24(3):131-138.in Chinese)
[8]铁道部第三勘测设计院.TB 10002.5—99铁路桥涵地基和基础设计规范[S].北京:中国铁道出版社,2000.
[9]马筠.我国铁路环境振动现状及传播规律[J].中国环境科学,1987,7(5):70-74.(MA Jun.Current Situation of Train-Induced Vibration of Environment and Its Propagation[J].China EnvironmentScience,1987,7(5):70-74.in Chinese)
[2]XIA He,ZHANG Nan,CAO Yanmei.Experimental Study of Train-Induced Vibrations of Environments and Build-ings[J].Sound&Vibration,2005(280):1017-1029.
[3]LINCY P,DEGRANDE G.Numerical Modeling of Traffic Induced Vibrations in Building Based on a Dynamic Soil-Structure Interaction Formumation[C]//Proceeding of the 15th ASCE Engineering Mechanics.New York:2002,Ⅱ:2-5.
[4]粟润德,刘维宁,张鸿儒.区间地铁列车振动的地面响应测试分析[J].中国铁道科学,2008,29(1):120-126.(LI Runde,LIU Weining,ZHANG Hongru.Test Analysis of Metro Induced Ground Vibrations at Interval[J].China Railway Science,2008,29(1):120-126.in Chinese)
[5]夏禾,张楠.车辆与结构动力相互作用[M].2nd.北京:科学出版社,2005.57-68.
[6]陈上有,夏禾,战家旺.变速移动荷载作用下简支梁的动力响应分析[J].中国铁道科学,2007,28(6):41-46.(CHEN Shangyou,XIA He,ZHAN Jiawang.Dynamic Response Analysis of Simply-Supported Beam under Speed-Varying Loads[J].China Railway Science,2007,28(6):41-46.in Chinese)
[7]李培振,吕西林.考虑土—结构相互作用的高层建筑抗震分析[J].地震工程与工程振动,2004,24(3):131-138.(LI Peizhen,L Xilin.Numerical Analysis of Tall Buildings Considering Dynamic Soil-Structure Interaction[J].Earthquake Engineering and Engineering Vibration,2004,24(3):131-138.in Chinese)
[8]铁道部第三勘测设计院.TB 10002.5—99铁路桥涵地基和基础设计规范[S].北京:中国铁道出版社,2000.
[9]马筠.我国铁路环境振动现状及传播规律[J].中国环境科学,1987,7(5):70-74.(MA Jun.Current Situation of Train-Induced Vibration of Environment and Its Propagation[J].China EnvironmentScience,1987,7(5):70-74.in Chinese)
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