同济大学学报（自然科学版）2024，Vol.52Issue(7)：1024-1031,8.DOI:10.11908/j.issn.0253-374x.23420
考虑地层横观各向同性的地铁临近环境减隔振超结构
Vibration-Reducing Metastructures in Subway Adjacent Environment Considering Transverse Isotropy of Soil
摘要
Abstract
Vibration-reducing metastructures based on the periodic band structure theory have received extensive attention due to their bandgap characteristics.Among them,the locally resonant bandgap is of great significance for small-scale structures to achieve low-frequency vibration reduction and isolation,which has been applied to surface wave and body wave attenuation and isolation of ground soils.However,most of the current research focuses on isotropic soils.In this paper,considering the transverse isotropy of the ground soil,the vibration reduction and isolation characteristics of the two-dimensional rubber-concrete metastructures for subway vibration are studied.The effects of concrete radius,rubber thickness,and soil anisotropy on the omnidirectional bandgap of metastructures are comparatively discussed,based on which,the different directional transmission and full-scale transmission models are established.It is verified that the elastic waves can be effectively attenuated within the bandgap frequency of the metastructures.This paper explores the influence of soil anisotropy on the performance of vibration-reducing metastructures,which can provide reference and guidance for the design and analysis of vibration reduction and isolation in the vicinity of subways.关键词
横观各向同性/地铁振动/减隔振超结构/能带理论/透射传输Key words
transverse isotropy/subway vibration/vibration-reducing metastructures/band structure theory/transmission分类
数理科学引用本文复制引用
庄晓莹,蔡润成,金亚斌..考虑地层横观各向同性的地铁临近环境减隔振超结构[J].同济大学学报（自然科学版）,2024,52(7):1024-1031,8.基金项目
国家自然科学基金(52278411)、上海市科技创新行动计划(22JC1404100) （52278411）
