Shaking Table Test on the Seismic Response of Cross-Structure Between Subway Station and Tunnel

According to the cross-structure between subway station and tunnel in formation condition of silt sand in Beijing, a series of shaking table tests on the dynamic interaction between soil and structure are carried out. In the case of inputting waves, monitor the acceleration, displacement of soil, the acceleration, strain of structure and dynamic earth pressure between soil and structure. Research on the seismic force and deformation characteristics of station, and analyzed the interaction law of seismic response of cross-structure of subway station and tunnel. The result shows that the top displacement of model box is larger than the bottom, and the distribution law of the acceleration is contrary. The acceleration response of shallow soil is weakened with the structure buried. The interaction force between soil and structure is comparatively large. The strains of columns and walls are larger than which of beams and plates. Stress concentration is generated on the joints. The bottom tunnel can absorb the earthquake waves coming from shaking table test, and reduce the seismic response of the upper station structure. The week effect reduces with soil thickness increasing.