铁道标准设计2018，Vol.62Issue(4)：6-11,6.DOI:10.13238/j.issn.1004-2954.201706010002
双块式无砟-有砟轨道过渡段不平顺及动响应分析
Irregularity and Dynamic Response Analysis of Transition between Double Block Ballastless Track and Ballast Track
摘要
Abstract
Through the investigation of the transition between double block ballastless track and ballast track,it is found that the transition section experiences sleeper suspension, strengthen rail missing and strengthen rail fastening missing. In view of these phenomena, the evolution and changes of track geometry are analyzed based on the data of rack geometry in the transition section obtained by the comprehensive inspection train, and dynamic responses in the transition section are calculated with simulation calculation in terms of different irregularity and different operation speed. The study shows that the transition section between ballastless track and ballasted track is prone to producing relatively high amplitude irregularities, and over time, they tend to deteriorate gradually. According to the analysis, strengthening rail can improve track stiffness,and reduce the adverse impacts on the train operation due to suspended sleepers and the dynamic track irregularities caused by train operation. The transition section is applicable to traffic at the speed less than 250 km/h and only to train operation at 300 ~350 km/h provided that good irregularity condition is present.关键词
双块式无砟轨道/有砟轨道/过渡段/演变规律/动态响应Key words
Double block ballastless track/Ballast track/Transition section/Evolution law/Dynamic response分类
交通工程引用本文复制引用
尤明熙,杨飞,黎国清,陈东生,尹峰..双块式无砟-有砟轨道过渡段不平顺及动响应分析[J].铁道标准设计,2018,62(4):6-11,6.基金项目
中国铁路总公司科技研究开发计划项目(2015G001-B) （2015G001-B）
国家重点基础研究发展计划(973)课题(2013CB036205) （973）
