Abstract:
Jing′an Temple Station of Shanghai Metro Line 14 is located in urban core area. Due to the restriction of surrounding operating facilities and the demand for building protection, the station adopts a combined structure in which the pipe-jacking structures are connected to the cut-and-cover frame structures on both sides. However, the station structure constructed by the combined excavation method has technical problems such as large differences in stiffness and unknown seismic effects. Therefore, a shaking table test with a geometric scale of 1/20 is carried out to investigate the seismic performance of the station structure. Using the flexible connection, the peak accelerations of pipe-jacking structures when the seismic wave is input along the transverse direction of the station are larger than those along the longitudinal direction. The peak accelerations of pipe-jacking at the end with the larger mass is larger. Using rigid connection, the overall circumferential-joint extensions is larger than that of the flexible connection. The theoretical analysis is more suitable for flexible connection conditions. When the maximum circumferential-joint extension is small, the experimental value is smaller than the theoretical value.