铁道标准设计2017，Vol.61Issue(7)：31-36,6.DOI:10.13238/j.issn.1004-2954.2017.07.008
超重货物作用下的铁路轨道路基响应机理研究
Research on Response Mechanism of Railway Track Subgrade under the Effect of Overweight Goods
摘要
Abstract
In order to study the response mechanism of railway track subgrade under the effect of overweight goods, a track-subgrade dimensional constitutive model is established based on finite element software ANSYS to analyze the stress distribution and displacement deformation of the track subgrade under the effect of overweight goods, and the results are compared with current design specifications. The results show that the stresses of the rail and sleeper do not exceed the allowable stress values, while the ballast stress is 637. 72 kPa, which is more than the limit, and the local stress of the subgrade bed reaches up to 202. 33 kPa. Overweight goods may damage the existing track structure, so necessary maintenance measures should be taken. The research results can provide some reference for future safe operations with overweight goods and for the maintenance of the track subgrade of heavy haul railway.关键词
铁路路基/超重货物/有限元/应力分布/路基变形Key words
Railway subgrade/Overweight goods/Finite element/Stress distribution/Subgrade deform-ation分类
交通工程引用本文复制引用
尹紫红,朱波,杨明,邵国霞..超重货物作用下的铁路轨道路基响应机理研究[J].铁道标准设计,2017,61(7):31-36,6.基金项目
国家留学基金管理委员会资助项目(201507005063) （201507005063）
国家自然科学基金资助项目(51378441) （51378441）
