框架结构内环境振动波传播规律研究
|
摘要
以实测环境振动波作为输入波,采用有限元方法,以加速度作为指标,在时域和频域内深入研究各种振动波在框架结构内的传播规律。研究结果表明:环境振动波和地震波的主要频谱范围存在明显差异,环境振动波相互之间的频谱分布范围也有较大不同;由于输入振动波主要频率范围的不同,加速度在楼层间的传播特点不尽相同;振级在楼层间的分布特点与加速度峰值有不同;存在一个结构高宽比使得分析结构的竖向加速度峰值响应最大。
Taking the measured environmental vibration wave as input and taking the acceleration velocity as index,the finite element method is used for studying the propagation regulation in frameworks for different vibration waves in time domain and frequency domain.The study results show that the frequency spectrum of the environmental vibration wave is obviously distinct from that of seismic wave,and the frequency spectra between the environmental vibration waves are also greatly distinct;Due to the different dominant frequencies,the propagation properties of the acceleration in the frame are different.The propagation regulation for vibration level in the frame is different from the acceleration peak.The existing depth-width ratio of the frame would make the vertical acceleration peak value in the frame induced by vibration wave being largest.
Taking the measured environmental vibration wave as input and taking the acceleration velocity as index,the finite element method is used for studying the propagation regulation in frameworks for different vibration waves in time domain and frequency domain.The study results show that the frequency spectrum of the environmental vibration wave is obviously distinct from that of seismic wave,and the frequency spectra between the environmental vibration waves are also greatly distinct;Due to the different dominant frequencies,the propagation properties of the acceleration in the frame are different.The propagation regulation for vibration level in the frame is different from the acceleration peak.The existing depth-width ratio of the frame would make the vertical acceleration peak value in the frame induced by vibration wave being largest.
引文
[1]高广运,孙雨明,吴世明.铁路产生的地面振动与减振[M].上海:同济大学出版社,2002.
[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.
[3]陈建国,夏禾,姚锦宝.高架轨道交通列车对周围环境振动影响的试验研究[J].振动与冲击,2011,30(2):159－163.
[4]Hung H H,YanY B,Chang DW.Wave barriers forreduc－tion of train－induced vibrations in soils[J].Journal ofGeotechnical and Geo－environmental Engineering(ASCE),2004,130(12):1283－1291.
[5]闫维明,聂晗,任珉,等.地铁交通引起地面振动的实测与分析[J].铁道科学与工程学报,2006,3(2):1－5.
[6]刘腾,雷晓燕,刘庆杰.高速铁路沿线地面环境振动特性的实测与分析[J].华东交通大学学报,2011,28(4):19－22.
[7]高广运,李志毅,冯世进,等.秦-沈铁路列车运行引起的地面振动实测与分析[J].岩土力学,2007,28(9):1817－1822,1827.
[8]冯牧,雷晓燕.列车引发建筑物振动现场测试及数值分析[J].铁道建筑,2011,(7):160－164.
[9]陈建国,夏禾,曹艳梅.等.运行列车对周围建筑物振动影响的试验研究[J].振动工程学报,2008,21(5):476－481.
[10]Lombaert G.Development and experimental validation of anumerical model for the free filed vibrations induced by roadtraffic[D].The Kingdom of Netherlands:Katholieke Un－iversiteit Leuven,2001.
[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.
[3]陈建国,夏禾,姚锦宝.高架轨道交通列车对周围环境振动影响的试验研究[J].振动与冲击,2011,30(2):159－163.
[4]Hung H H,YanY B,Chang DW.Wave barriers forreduc－tion of train－induced vibrations in soils[J].Journal ofGeotechnical and Geo－environmental Engineering(ASCE),2004,130(12):1283－1291.
[5]闫维明,聂晗,任珉,等.地铁交通引起地面振动的实测与分析[J].铁道科学与工程学报,2006,3(2):1－5.
[6]刘腾,雷晓燕,刘庆杰.高速铁路沿线地面环境振动特性的实测与分析[J].华东交通大学学报,2011,28(4):19－22.
[7]高广运,李志毅,冯世进,等.秦-沈铁路列车运行引起的地面振动实测与分析[J].岩土力学,2007,28(9):1817－1822,1827.
[8]冯牧,雷晓燕.列车引发建筑物振动现场测试及数值分析[J].铁道建筑,2011,(7):160－164.
[9]陈建国,夏禾,曹艳梅.等.运行列车对周围建筑物振动影响的试验研究[J].振动工程学报,2008,21(5):476－481.
[10]Lombaert G.Development and experimental validation of anumerical model for the free filed vibrations induced by roadtraffic[D].The Kingdom of Netherlands:Katholieke Un－iversiteit Leuven,2001.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心