In order to study the seismic performance of pile top combined beam structure under vibration

with large shaking table test as a means

we compare and study the dynamic response of anti-slide pile with pile top and coupling beam and ordinary anti-slide pile under different El Centro seismic ground motion

and draw the following conclusions:（1）With the increase of the peak value of El Centro ground motion

the anti-slide pile side amplification coefficient and the pile side earth pressure constantly increase.（2）Due to the effect of the crown beam

the force condition of anti-slide pile structure is changed.（3）Under the action of vibration in X direction

the amplification coefficient at the top of anti-slide pile with crown beam is larger than that of the top of ordinary anti-slide pile;Under the action of vibration in Zdirection

there is a contrary result;Under the action of vibration in XZdirection

the difference of the amplification factor of the different kinds of piles top is related to the peak acceleration.（4）With the increase of vibration

a new shear slip line may be produced in the bedrock surface.（5）Under the action of vibration

when the El Centro seismic peak acceleration is not more than 1.2g

the seismic performance of the constrained anti-slide pile is relatively better.This experiment can provide a reference for design of anti-seismic structure.