Stress distribution is not accurate of ballastless track in ABAQUS

Dear riends.

   I have been trying to do is that developing a model of railway track using Abaqus software in order to check the dynamic responses of subgrade layer. For that, I have created all layers of the complete track using different specific materials and TIE constrains for each layer. In addition, I have created in the interaction between wheel and rail with firctional interaction. I have tried two steps, step 1 is static general and step 2 dynamic implicit and I am using time amplitude.

I have used 125 in concentrated load and load is to be run along the full length of the track. Additionally the bottom of the model was constrained in all six degrees of freedom, but therse is no any responce after rail track layer.

I have attached a picture of my model

Am I using the right approach? 

Do you think its a good idea using moving loads in abqus CAE?

any help willbe greatly appriciated.

Thanks and Regards