摘要
通过ANSYS有限元软件建立轨道—路基系统三维模型,分析重载铁路路基基床结构在动力荷载作用下的变化规律,为研究重载铁路路基的力学性能提供技术支持.随着基床弹性模量、密度的增大,基床应力累计叠加逐步增大,基床沉降累计变形逐步减小,基床振动幅度不断增大,振动趋势逐渐平缓,抵抗变形能力减弱.
Through finite element software ANSYS, the model of 3d track-subgrade system is set up, the change rule about the bed of overloaded railway subgrade is analyzed under dynamic loads. As the elasticity modulus and density of the bed are increased, the accumulative total stress increases and the accumulative de- formation reduces gradually. With the increaseing vibration amplitude of increaseing, the trend of the vibration slows gradually, and the resistance to deformation becomes weakened.
出处
《大连交通大学学报》
CAS
2013年第4期77-80,共4页
Journal of Dalian Jiaotong University
关键词
重载铁路
路基基床
轨道-路基系统
结构动力分析
overloaded railway
the bed of subgrade
track-subgrade system
structural dynamic analysis
