The study of steel transfer parts in assembled building connection

Abstract

At present, most prefabricated components in the assembled buildings could be assembled at the construction site. But the connection method is still of traditional nature, such as steel connection and seam filled with cast-in-place concrete. So, our research group proposed a series of different new types of connection schemes based on the idea of connecting steel transfer parts. According to the different parts of the connection, including how to connect the assembled shear wall and the coupling beam by the U type bar connector, how to connect the shear walls by the method of mortise joint in the horizontal direction and how to connect the shear wall with the columns and beams in the frame-shear wall structure by the keyways. As compared with the traditional way, the following observations can be made: By using the steel transfer parts to connect prefabricated components, the internal force can be transferred effectively and the connection reliability is ensured. The design requirement of “strong connection” is easy to be achieved, which can increase the seismic performance of the structure. The field wet operation can be reduced and connection parts no longer need to be welded. The assembly rate is raised greatly in the whole structure. In the meanwhile, the proposed schemes still exhibit some drawbacks which need to be improved by finite element simulations and experimental studies.