Abstract: In order to reveal the mutual response of silo-stock-foundation system under dynamic action， a small vibration table silo test was carried out. The rules of acceleration， displacement and earth pressure of the silo composite structure under seismic load were studied， and the seismic response of silo-stock-foundation interaction system was analyzed by numerical simulation. Results show that: The peak acceleration of the silo top has a tendency to increase first and then decrease with the increase of the storage material. The relative movement of the storage material and the silo has a shock absorption effect on the silo system. The displacement patterns on the busbar of the same working condition are similar， and the displacement peak increases with the increase of the storage amount， and the difference between the upper and lower sides is larger. Under the action of seismic waves， the earth pressure fluctuates up and down， but the overall trend shows a gradual increase until it stabilizes at a certain value. The research can provide some theoretical basis and reference values for the safe operation of silo structure under earthquake actions.

Key words: silo-stock-foundation system, seismic response, dynamic characteristics, dynamic interaction, shaking table test