The prefabricated components in a monolithically precast subway station aremainly connected by the cast-in-situ concrete and splice sleeve. The design objective is to make sure that the structural performance is equivalent to that of a cast-in-place structure. But the structure is different from a cast-in-place structure, so the above mentioned objective should be investigated. Based on a real subway engineering project at Beijing, 1-g shaking table model tests of the site-monolithically precast subway structure were performed to study the seismic structural displacement and deformation responses, including the horizontal, vertical absolute and relative displacement, and angular displacement, etc. Results show that the structural horizontal responses were dominant by the responses of the surrounding soil. But the vertical responses were not sufficiently restrained. The angular displacement were observed to be within 0.03 degree. The story drifts of the basement-1 andbasement-2 were large with unrecoverable deformation smaller than 0. 2 mm in the both horizontal and vertical directions. However, almost no structural damage was observed after the experiments, indicating that the prefabricated components have relative displacement at the joint regions.

monolithically precast subway station  /  1-g shaking table test  /  vertical displacement  /  prefabricated underground structure  /  seismic resistance on underground structure