铁道标准设计Issue(12)：32-34,35,4.
双块式无砟轨道裂纹对道床板受力的影响分析
Analysis of Stress State of Track Slab under the Influence of Structure Cracking of Bi-block Ballastless Track
徐光鑫 1杨荣山1
作者信息
- 1. 西南交通大学高速铁路线路工程教育部重点实验室，成都 610031
- 折叠
摘要
Abstract
Based on mechanical calculation model of bi-block ballastless track, focusing on both the surface cracks and the through-cracks at track slab with different cracking widths and depths, this paper analyzed the effect on track slab’s stress state before and after the track slab cracking under the action of train load, and also analyzed the stress distribution of cracked track slab under the action of the most unfavorable axial temperature load. The results show that, in comparison with the un-cracked ballastless track, and under the action of train load, the concrete stress of the track slab of the cracked ballastless track will increase a little, and the longitudinal stress of steel bar will increase with the increase of crack depth. Under the axial temperature load, with the increase of crack width, the concrete’s tensile stress and the steel bar’s stress of the track slab will have relatively small change.关键词
双块式无砟轨道/道床板裂纹/列车荷载/温度荷载Key words
bi-block ballastless track/cracking of track slab/train load/temperature load分类
交通工程引用本文复制引用
徐光鑫,杨荣山..双块式无砟轨道裂纹对道床板受力的影响分析[J].铁道标准设计,2013,(12):32-34,35,4.
