长沙理工大学学报：自然科学版2011，Vol.8Issue(2)：28-34,7.
京沪高速铁路板式无砟轨道竖向振动分析
Vertical vibration of ballastless track slab on Beijing-Shanghai high-speed railway
田仲初 1李攀1
作者信息
- 1. 长沙理工大学土木与建筑学院,湖南长沙410004
- 折叠
摘要
Abstract
The simply supported beam bridge of 32 m is taken as the background, depending on the vehicle, rail structure and bridge as a system, which establishes the system vibration equations based on the principle of total potential energy with stationary value in elastic system dynamics and the＂set-in-right-position＂rule for formulating matrixes. ANSYS simulation is used to calculate the dynamic responses of slab ballastless track under vehicle load, and the effect of the stiffness and damping of cement asphalt mortar on the vertical vibration of the system was analyzed. Results show that variation tendency and amplitude of dynamic response of the system is compliance with the design operation requirements of ballastless track and the reasonable value of the cement asphalt mortar stiffness is 1 ×10^9-2 ×10^9 N/m, and the large damping of mortar layer can effectively reduce the vibration of the low track slab and bridge.关键词
板式轨道/32/m箱梁/仿真计算/动力响应/CA砂浆Key words
slab track/32 m box girder/simulation calculation/dynamic responses/cement asphalt mortar分类
交通运输引用本文复制引用
田仲初,李攀..京沪高速铁路板式无砟轨道竖向振动分析[J].长沙理工大学学报：自然科学版,2011,8(2):28-34,7.
