Colajanni, P.; Ahmed, M.; Pagnotta, S.; Orlando, P. A Review of Friction Dissipative Beam-to-Column Connections for the Seismic Design of MRFs. Appl. Sci.2024, 14, 2291.
Colajanni, P.; Ahmed, M.; Pagnotta, S.; Orlando, P. A Review of Friction Dissipative Beam-to-Column Connections for the Seismic Design of MRFs. Appl. Sci. 2024, 14, 2291.
Colajanni, P.; Ahmed, M.; Pagnotta, S.; Orlando, P. A Review of Friction Dissipative Beam-to-Column Connections for the Seismic Design of MRFs. Appl. Sci.2024, 14, 2291.
Colajanni, P.; Ahmed, M.; Pagnotta, S.; Orlando, P. A Review of Friction Dissipative Beam-to-Column Connections for the Seismic Design of MRFs. Appl. Sci. 2024, 14, 2291.
Abstract
The use of friction-based Beam-to-Column Connections (BCC)s for earthquake-resistant Moment Resistant Frames (MRFs), aiming at eliminating damage to beam end sections due to the development of plastic hinges, has taken hold since the early eighties. Different technical solutions were proposed for steel structures, some were also designed for timber structures, while few more recent studies concern friction joints employed in reinforced concrete structures. Research aimed at characterizing the behavior of joints has focused on the evaluation of the tribological properties of the friction materials, coefficient of friction, shape and stability of the hysteresis cycles, influence of the temperature, speed of load application, effects of the application method, stability of preload, the influence of seismic excitation characteristics on the structural response, statistical characterization of amplitude and frequency of the slip excursion during seismic excitation. Studies aimed at identifying the design parameters capable of optimizing performance have focused attention mainly on the slip threshold, device stiffness, and deformation capacity. This review compiles the main and most recent solutions developed for MRFs. Furthermore, the pros and cons for each solution are highlighted, focusing on the dissipative capacity, shape and stability of hysteresis loops. In addition, the common issues affecting all friction connections, namely characteristics of friction shims and the role of bolt preload, are discussed. Based on the above considerations, a guideline can be outlined, which can help to choose the appropriate solutions for beam-to-column connections for MRFs.
Keywords
Beam-to-Column Connection; Friction; Energy Dissipation; Seismic Energy
Subject
Engineering, Civil Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
