噪声与振动控制Issue(4)：178-183,6.DOI:10.3969/j.issn.1006-1335.2014.04.039
地铁产生的环境振动及轨道结构减振分析
Analyses of Subway Induced Environment Vibration and Vibration Reduction of Rail Track Structure
摘要
Abstract
Taking the part of subway line 1 in Nanchang Bayi square area as the engineering object, the three-dimensional finite element model of a rail-tunnel-ground system is constructed and its dynamic responses are calculated. Three kinds of track bed models, monolithic track bed, elastically supported block track bed and steel-spring floating-slab track bed, are constructed. Taking vibration acceleration, one-third octave vibration acceleration level and Z vibration level as evaluation indexes, the vibration responses of the tunnel wall and ground surface with different track structures are compared. Considering the support stiffness change of the vibration-reduction track bed, the influence of natural frequency on the vibration reduction effect is analyzed. The study shows that the main frequency of ground surface vibration induced by train is near 40Hz. The natural frequency of vibration for the vibration-reduction track bed has a great influence on the vibration reduction effect. The vibration reduction effect of the steel-spring floating-slab track bed is much better than that of the elastically supported block track bed.关键词
振动与波/地铁/环境振动/轨道结构/减振效果Key words
vibration and wave/subway/environment vibration/rail track structure/vibration reduction effect分类
通用工业技术引用本文复制引用
涂勤明,雷晓燕,毛顺茂..地铁产生的环境振动及轨道结构减振分析[J].噪声与振动控制,2014,(4):178-183,6.基金项目
国家自然科学基金项目(U1134107)；江西省普通本科高校科技落地计划项目 （U1134107）
