CAJ | 학술논문

为了改善钢弹簧浮置板轨道的减振性能，以现有液压弹簧阻尼器的布置形式为基础，设计了一种全新的液压弹簧阻尼器布置形式。利用ABAQUS数值模拟软件建立显式计算有限元模型，施加现场实测的定点轮轨力。通过MATLAB编程软件；分析两种布置形式下，轨道板和基底的振动加速度时程、三分之一倍频程以及Z振级。结果表明在列车轮轨力作用下，现有钢弹簧浮置板轨道的轨道板振动幅值大于新型钢弹簧浮置板轨道；同时，基底振动加速度三分之一倍频程和Z振级分析都证实了在低频区，新型钢弹簧浮置板轨道具有更好的减振效果。
위료개선강탄황부치판궤도적감진성능，이현유액압탄황조니기적포치형식위기출，설계료일충전신적액압탄황조니기포치형식。이용ABAQUS수치모의연건건립현식계산유한원모형，시가현장실측적정점륜궤력。통과MATLAB편정연건；분석량충포치형식하，궤도판화기저적진동가속도시정、삼분지일배빈정이급Z진급。결과표명재열차륜궤력작용하，현유강탄황부치판궤도적궤도판진동폭치대우신형강탄황부치판궤도；동시，기저진동가속도삼분지일배빈정화Z진급분석도증실료재저빈구，신형강탄황부치판궤도구유경호적감진효과。
In order to improve vibration reduction ability of steel-spring floating slab tracks, a new supporting form with hydraulic spring dampers was proposed and studied. A finite element model with explicit algorithm was built using Abaqus software for the floating slab track. The in-situ tested rail-wheel contact force was applied to the model. The time history of vibration acceleration, 1/3 octave and Z vibration level of the floating slab and the foundation were analyzed by Matlab for original supporting form and the new supporting form respectively. Results show that: (1) the vibration amplitude of the floating slab of the steel-spring floating slab track with original supporting form is higher than that of the slab track with the new supporting form;(2) in low frequency range, the floating slab track with new supporting form has better vibration reduc-tion ability than that of the slab track with the original supporting form according to the analysis of the 1/3 octave and Z vi-bration level of the foundation.