噪声与振动控制2025，Vol.45Issue(2)：39-43,56,6.DOI:10.3969/j.issn.1006-1355.2025.02.007
地铁周期轨道结构振动带隙研究
Vibration Bandgap of Periodic Track Structures in Subways
摘要
Abstract
To study the band gap characteristics of periodic subway bed track structures,a calculation model by regard-ing the rail and track bed slab as Euler beams was established.the band gap range were calculated using transfer matrix meth-od and finite element method,and the influence of track structure parameters on the band gap characteristics was analyzed.Results show that both methods can effectively and accurately calculate the band gap characteristics of the subway periodic track structure.The result of the transfer matrix method shows that there is a band gap of 0-194 Hz in the frequency range of 0-500 Hz,while the result of the finite element method shows a band gap range of 0-193.7 Hz.The calculated transmis-sion curve also shows the attenuation in the 0-193.7 Hz range.The spacing and stiffness of fasteners,as well as the stiffness of support under the plate all impact the band gap.The width of the band gap decreases with increasing spacing and stiffness of support under the plate,while increasing stiffness of fasteners increases the width of the band gap.So,appropriate fasten-ers and spacing should be selected to effectively reduce track structure vibration.关键词
振动与波/地铁周期轨道结构/声子晶体/传递矩阵法/有限元法/振动带隙Key words
vibration and wave/periodic track structure of subway/phononic crystals/transfer matrix method/finite element method/vibration band gap分类
交通工程引用本文复制引用
雷开云,缪林昌,郑海忠,肖鹏,伍鹏腾,卢铭辉..地铁周期轨道结构振动带隙研究[J].噪声与振动控制,2025,45(2):39-43,56,6.基金项目
国家自然科学基金资助项目(52173248) （52173248）
