Abstract
This paper presents an experimental study on the seismic performance of a novel composite joint between reinforced concrete columns and steel beams (RCSs) for frame structures. In the proposed RCS joint, an H steel profile totally embedded inside an RC column is directly welded to the steel beam. The H steel profile was covered by two supplementary plates to avoid the stirrups resisting the shear in the connection region. Two full-scale joints were built and tested under reversed-cyclic loading at the University of Transport and Communications of Vietnam. Seismic performance in terms of load-bearing capacity, story drift capacity, energy dissipation, and stiffness degradation were evaluated. The test specimen showed a good response to cyclic load reversals.
Highlights
The reinforced concrete column and steel beam (RCS) frames consist of reinforced concrete (RC)columns and steel (S) beams
This paper describes an experimental study on the seismic performance of the above-mentioned novel joint
In specimen SC2, because of the two additional plates, the stiffness was locally reinforced at the joint region; the transmitted force of the beam was larger, the embedded steel part in specimen SC2 could spread the force in a distributed way to the surrounding concrete
Summary
The reinforced concrete column and steel beam (RCS) frames consist of reinforced concrete (RC). Their study found that when the composite behaviors can be achieved through the natural cohesion between the steel and concrete for force transfer between the beam and column is ensured, RCS connections arewhether capable the of providing a the steel-reinforced concrete column in the hybrid subassembly no matter shear studs reliable amount of strength and ductility under seismic loading. An experimental study on the cyclic behavior of this RCS joint type conducted by Nguyen et al [14] showed that it could be used as a dissipative element in ductility class medium structures This joint design required a complex set of stirrups in the connection zone because the stirrups had to go through the steel beam
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