铁道标准设计2017，Vol.61Issue(1)：11-14,15,5.DOI:10.13238/j.issn.1004-2954.2017.01.003
不同时速下地铁多种轨道结构现场测试与分析
Test and Analysis of Vibration Characteristics of Metro Track Structures Subject to Different Speed
摘要
Abstract
In recent years, the problem of subway vibration pollution becomes more and more prominent, and a variety of vibration reduction track structures are adopted in the subway. In order to evaluate the damping effect of various vibration reduction track structures, the vibration characteristics of four kinds of track structures subject to different speeds are analyzed in the frequency domain based on the dynamic test of subway. The results show that the effect of the increase of train speed on the vertical acceleration of rail, ballastless track bed, tunnel of monolithic track bed with buried long sleeper is significant in the low frequency band, while the effect is small in the middle-high frequency band. For GJ-Ⅲmedium type vibration damping rail fasteners, the vibration damping effect decreases obviously as the speed increases. Meanwhile the effect of the rubber vibration isolation pad floating slab track on ballastless track bed and tunnel wall is stable as the speed increases, while the vibration damping effect on rail, ballastless track bed and tunnel wall of steel spring floating slab track is also stable.关键词
动力测试/轨道结构/不同时速/减振效果/地铁Key words
Dynamic test/Track structure/Different speed/Damping effect/Metro分类
交通工程引用本文复制引用
葛辉,杨麒陆,梁迎春,王平..不同时速下地铁多种轨道结构现场测试与分析[J].铁道标准设计,2017,61(1):11-14,15,5.基金项目
国家杰出青年科学基金项目(51425804) （51425804）
