北京交通大学学报2018，Vol.42Issue(1)：34-39,6.DOI:10.11860/j.issn.1673-0291.2018.01.005
橡胶垫浮置板轨道变形控制及减振分析
Deformation control and vibration reduction analysis of rubber floating slab track
摘要
Abstract
Deformation limits should be taken into account during the optimization design of vibration reduction effect of track structures.Taking the rubber floating slab track as a research object,modal analysis and harmonic response analysis method are used to study the track vibration characteristics.Considering the rail deformation limit,the optimal stiffness of pad under track is proposed.Based on a metro vehicle-rubber floating slab track-fundamental spatial coupling system dynamic analysis model,the dynamic responses of track and foundation under the optimal stiffness are calculated,and the vibration reduction effect is evaluated.The results show that the rubber floating slab track has good vibration reduction performance.The natural frequency of track is 18.7 Hz at a rail deformation limit of 4 mm.Within the frequency range of 1～80 Hz,the comprehensive vibration reduction effect of the floating slab track is 10.4 dB.The research results will be used in practical engineering and provide some references for the selection and optimization design of similar vibration reduction track structures.关键词
浮置式轨道/钢轨变形/减振效果/振动特性/动力响应Key words
floating track/rail deformation/vibration reduction effect/vibration characteristics/dynamic response分类
交通工程引用本文复制引用
陈鹏,辛涛..橡胶垫浮置板轨道变形控制及减振分析[J].北京交通大学学报,2018,42(1):34-39,6.基金项目
国家自然科学基金(51678047) National Natural Science Foundation of China(51678047) （51678047）
