ABSTRACT
This paper presents a study on seismic response of a metro station, constructed with cut-cover and jacking method, in Shanghai. As the station structure constructed by the combined structures of jacked caisson and culvert frames on both sides, differences in stiffness would induce unknown seismic effects. Shaking table tests, at geometric scale of 1/20, were carried out to investigate the seismic performance of the station structure, with flexible connection or rigid connection. The test results showed that the flexible connection, pipe-jacking portion at the end of frame portion with the larger mass has larger peak accelerations. Using the rigid connection, the overall circumferential-joint extensions of caisson portion is larger than that of the flexible connection.
