摘要
通过对不同轴重、速度下的编组试验列车进行动态测试，分析了既有线重载铁路基基床动应力、加速度及动位移分别随轴重增加和速度提高的变化规律，为既有线重载铁路路基改能扩建以及病害机理的研究提供了依据。
By performing dynamic tests on the marshalling test trainsand speeds, this paper analyzes the change principles how dynamicwith different axle-loadsstress, acceleration anddynamic displacement separately change as the increase of axle-load and speed. The studyprovides new evidence for the feasibility and security of capacity expansion of heavy-haul railwaysubgrade, and also for the research of subgrade defect mechanism.
出处
《河北交通职业技术学院学报》
2016年第4期55-58,共4页
Journal of Hebei Jiaotong Vocational and Technical College
关键词
重载铁路
动态测试
动应力加速度
动位移路基病害
heavy-haul railway
dynamic test
dynamic stress
acceleration
dynamic displace-ment
subgrade defects
