土路基上板式轨道结构受力的有限元分析  

Finite Element Analysis on Stresses in Slab Track Structures on Soil Subgrade

作　　者：罗震[1] 翟婉明[1] 颜华[2] 姚力[2] 

机构地区：[1]西南交通大学牵引动力国家重点实验室,四川成都610031 [2]铁道第二勘察设计院,四川成都610031

出　　处：《西南交通大学学报》2007年第6期711-714,725,共5页Journal of Southwest Jiaotong University

基　　金：教育部创新团队计划资助项目(IRT0452);国家自然科学基金资助项目(50521503);教育部科学技术研究重点项目(107095)

摘　　要：为分析土路基上板式轨道结构的受力,建立了有限元分析模型,从应力极值的角度研究了底座尺寸效应.结果表明,底座厚度减小使底座各向应力略微增大,降低基床最大压应力,但对轨道板受力影响很小;底座宽度增加使基床最大压应力明显降低,但对轨道板和底座受力影响甚微.To analyze the stresses in slab track structures on soil subgrades, a finite element model was derived. The dimensional effects of the reinforced concrete roadbed on the stresses in the track structure was studied. A reduction in the thickness of the reinforced concrete roadbed increases the stresses in it slightly, decreases the maximum compression stresses in the subgrade bed, and has a little influence on the stresses in the slab. An increase in the reinforced concrete roadbed width obviously decreases the maximum stresses in the subgrade bed, but has little effects on the stresses in the slab and roadbed.

关 键 词：无碴轨道 板式轨道 轨道板 土路基 有限单元法 

分 类 号：U213.242[交通运输工程—道路与铁道工程]