| 高架桥梁振动与结构噪声数值模拟 |
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| 引用本文： | 李晶,张楠,张立彬.高架桥梁振动与结构噪声数值模拟[J].环境工程,2012(Z1):156-160. |
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| 作者姓名： | 李晶 张楠 张立彬 |
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| 作者单位： | 北京交通大学土木建筑工程学院;北京铁路局石家庄货运迁建工程建设指挥部 |
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| 摘 要： | 利用有限元软件Ansys与声学软件LMS Virtual.Lab Acoustics进行城市轨道交通高架桥梁的振动声辐射分析。首先使用Ansys对箱型梁三维模型进行瞬态动力学分析,用一列移动荷载模拟列车过桥,然后将位移响应结果导入Virtual.Lab Acoustics中,作为边界条件,计算外声场。另外通过改变桥梁参数与车辆参数,计算分析桥梁振动响应与辐射声压变化,为城市轨道交通振动与噪声的控制提供数值依据。
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| 关 键 词： | 振动与波 高架桥 数值模拟 结构噪声 |
NUMERICAL SIMULATION OF THE VIBRATION AND STRUCTURE-BORNE NOISE OF THE VIADUCT |
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| Li Jing,Zhang Nan,Zhang Libin.NUMERICAL SIMULATION OF THE VIBRATION AND STRUCTURE-BORNE NOISE OF THE VIADUCT[J].Environmental Engineering,2012(Z1):156-160. |
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| Authors: | Li Jing Zhang Nan Zhang Libin |
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| Institution: | 1.School of Civil Engineering,Beijing jiaotong University,Beijing 100044,China;2.Beijing Railway Bureau,Shijiazhuang freight relocation project construction headquarters,Shijiazhuang 050000,China) |
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| Abstract: | Based on the combination of finite element software Ansys and acoustics software LMS Virtual.Lab Acoustics,this paper makes an analysis of the Vibration and sound radiation of the viaduct of urban rail transit.First of all,transient dynamic analysis of three-dimensional model of box beam was made in Ansys,with train passing bridge simulated by a moving load.Then vibration displacement response obtained by ANSYS were taken as boundary condition of outer sound field,which can achieve accurate acoustic volume in Virtual.Lab Acoustics.In addition,by changing the bridge parameters and vehicle parameters,the calculation and analysis of the vibration response and radiation sound pressure change which can provide a numerical basis for the control of vibration and noise of urban mass transit. |
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| Keywords: | Vibration and wave the viaduct numerical simulation structure-borne noise |
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