径向声子晶体地铁道床隔振性能

doi:10.6040/j.issn.1672-3961.0.2023.072

山东大学学报 (工学版) ›› 2023, Vol. 53 ›› Issue (5): 83-91.doi: 10.6040/j.issn.1672-3961.0.2023.072

• 土木工程 • 上一篇

径向声子晶体地铁道床隔振性能

厉超¹,庄培芝^2*,张思峰¹,陈诚³,李林千⁴

1.山东建筑大学交通工程学院, 山东济南 250101;2.山东大学齐鲁交通学院, 山东济南 250002;3.广东广州地铁设计研究院股份有限公司, 山东济南 250014;4.山东英格利实业有限公司, 山东济南 250100

发布日期:2023-10-19
作者简介:厉超(1990— ),男,山东日照人,副研究员,硕士生导师,博士,主要研究方向岩土动力学. E-mail:lichao21@sdjzu.edu.cn. *通信作者简介:庄培芝(1988— ),男,山东青岛人,教授,博士生导师,博士,主要研究方向岩土动力学. E-mail:zhuangpeizhi@sdu.edu.cn
基金资助:
山东省自然科学基金资助项目(ZR2022QE082)

Isolation performance of radial phononic crystal metro track bed

LI Chao¹, ZHUANG Peizhi^2*, ZHANG Sifeng¹, CHEN Cheng³, LI Linqian⁴

1.School of Transportation Engineering, Shandong Jianzhu University, Jinan 250101, Shandong, China;
2. School of Qilu Transportation, Shandong University, Jinan 250002, Shandong, China;
3. Guangdong Guangzhou Metro Design and Research Institute Co., Ltd., Jinan 250014, Shandong, China;
4. Shandong Yinggeli Industrial Co., Ltd., Jinan 250100, Shandong, China

Published:2023-10-19

摘要/Abstract

摘要： 为解决地铁振动问题,提出一种径向声子晶体(radial phononic crystal, RPC)地铁道床及其减振计算方法,并对其隔振性能进行探讨分析。将笛卡尔坐标系下弹性波波动方程转化为柱坐标系下波动方程,结合有限元法与Bloch定理,提出RPC地铁道床能带结构计算方法,探究道床尺寸及材料参数对带隙的影响,并根据济南地铁4号线盾构隧道建立隧道-衬砌-土体三维有限元仿真模型,分析了RPC地铁道床的实际隔振性能。结果表明:RPC地铁道床具有宽频带隙特性,其产生机理为2种材料的耦合共振作用,利用该特性可实现地铁隔振;晶格常数增大,带隙起始和截止频率均降低,带隙宽度减小;橡胶垫置换率增大,带隙起始和截止频率均降低,带隙宽度减小;橡胶垫弹性模量增大,带隙起始和截止频率均上升,且带隙宽度增大;RPC地铁道床在频率200 Hz以下范围内具有良好的隔振性能,地表处分频振级最大差值可达37 dB。

关键词: 地铁道床, 径向声子晶体, 隔振性能, 能带结构, 带隙特性

中图分类号:

TU470

厉超,庄培芝,张思峰,陈诚,李林千. 径向声子晶体地铁道床隔振性能[J]. 山东大学学报 (工学版), 2023, 53(5): 83-91.

LI Chao, ZHUANG Peizhi, ZHANG Sifeng, CHEN Cheng, LI Linqian. Isolation performance of radial phononic crystal metro track bed[J]. Journal of Shandong University(Engineering Science), 2023, 53(5): 83-91.

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径向声子晶体地铁道床隔振性能

Isolation performance of radial phononic crystal metro track bed

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