Translated Title
Plane alignment design of turnout with the transition curve based on wheel -rail syste m dynamics
Translated Abstract
In order to select proper plane alignments for turnouts with transition curves to meet good running per-formance and improve permissible speed through the diverging track of turnouts,a vehicle -turnout dynamic cou-pling model was established based on the wheel -rail dynamic method.No.42 turnout was taken as an example to calculate wheel /rail dynamic responses of various plane alignments and analyze relationships of evaluation in-dexes and train speeds.Results show the apply of transition curve at the back of the diverging track can ensure the safety and the stability when trains pass at medium or high speed,and adding curve radius or transition curve in the front of the diverging track can reduce the wheel /rail vibration.The higher the speed of train passing through the diverging track,the intenser the wheel /rail system vibration is.When the circular -curve radius of the diverging track of No.42 turnout was increased by 500 m,the permissible speed through the diverging track will increase 10 km /h,and that of the turnout with easement -circular -easement curve can be further in-creased.
Translated Keyword
dynamic response
fi-nite element method
speed through the diverging track
transition curve
turnout plane alignment
Access Number
WF:perioarticalcstdxyxb201505004
