Abstract: Based on a new type of vibration isolator with convenient maintenance and replacement, a coupling model of vehicle\|railway\|floating slab is established by using the ADAMA Matlab joint simulation method and putting the hysteretic non\|linearity of the isolator into consideration. Then, the effect of vehicle load condition, number of vibration isolator arrangement and performance failure condition on the vibration isolation performance is studied. It is found that the isolator deformation in full load of train operation is twice more than that in no load condition, but it still meets the requirements of the industry specification. Since 4 vibration isolators are enough to carry the train operation under full load and no load conditions, the floating slab is significantly increased even when the slab displacement at the failure position or the surrounding positions is still within the specified limit. So, when the support failure occurs, isolators should be replaced in time.