铁道标准设计2017，Vol.61Issue(10)：11-15,5.DOI:10.13238/j.issn.1004-2954.2017.10.003
地铁提速对减振垫浮置板轨道振动特征的影响分析
Analysis of Subway Speed-increasing Influence on Vibration Characteristics of Damping Pad Floating Slab Track
摘要
Abstract
The measured time-domain and frequency-domain results of metro rubber pad floating slab track (RPFST) at the train speed of 80km/h and 120 km/h are analyzed to investigate the influence of metro train speed increasing on vibration characteristics of RPFST.The results show that the increase of train speed has little influence on vertical displacement of RPFST.The peak values of 1/3 frequency interval of vibration acceleration of rail,floating slab and tunnel at the speed 120 km/h have the increment of 6.2,2.8 dB and 0.5 dB respectively compared with those at the speed of 80 km/h.The analysis of the integrated vibration level of each test point in RPFST shows that in the 0 ～20 Hz and 20 ～ 80 Hz frequency band,only the rail acceleration integrated vibration level is increased by more than 5％,and the vibration level changes of the floating slab and tunnel are less than 2.5％.In the 80 ～ 120 km/h speed range,the increment of train running speed has no obvious influence on tunnel vibration with RPFST.关键词
减振垫浮置板轨道/频域/振动加速度/行车速度Key words
Rubber pad floating slab track/Frequency domain/Vibration acceleration/Trains speed分类
交通工程引用本文复制引用
杨麒陆,豆银玲,王平..地铁提速对减振垫浮置板轨道振动特征的影响分析[J].铁道标准设计,2017,61(10):11-15,5.基金项目
国家杰出青年科学基金项目(51425804) （51425804）
