Study on the effect of shear thickening fluid damper in steel beam column joint

Abstract

Steel Structures possess notable resilience to deflections, distinguishing them from concrete structures. The inherent qualities of steel, such as ductility, high strength-to-weight ratio, rapid assembly or disassembly, and sustainability, enhance its capacity for constructing a wide range of structures. Design modifications can be incorporated into the connections between beams and columns in steel structures to enhance their structural strength and improve their capacity to dissipate energy, especially in the context of seismic-resistant designs. newlineAn effectively designed semi-rigid connection at joints can provide enhanced deformation capacity and reduce the risk of brittle failure. Due to numerous failures linked to fractures in welded beam-to-column connections within rigid frames during major earthquakes, extensive research has been conducted on various lateral load-resisting systems. These systems have been implemented in steel frames to minimize structural damage and facilitate post-earthquake repairs. Other lateral load-resisting systems include the implementation of braced frames, steel plate shear walls, dampers, and the concept of rocking structures have been utilized. newlineIn a beam-to-column connection, the primary role of the connection is to facilitate the transmission of axial force, shearing force, bending moment, and torsion. However, it is often observed that the axial and shearing deformations in many connections are relatively small compared to the rotational deformation. This rotational deformation is commonly quantified based on the moment present in the connection newline