Experimental and theoretical study of replaceable energy-dissipation devices for beam-column joints under cyclic loads
Year: 2025
Type: article
Abstract: In light of the design concept of replaceability following an earthquake, this paper proposes two types of metal dampers suitable for beam-column joints. A low-cyclic loading test of slit/corrugated dampers was carried out in this paper, revealing the failure mechanism and load-bearing capacity mechanism of the dampers. The distribution of shear loads on steel hinges, slit plates, and corrugated plates at varying displacements was examined. A finite element (FE) model incorporating the Chaboche constitutive has been established. The influence of geometrical parameters, including the T-stiffened plate, slit plate, and corrugated plate, on the bearing capacity and initial stiffness of metal dampers is discussed in detail. The results show that: the bearing capacity of the damper is negatively correlated with the T-stiffening plate aspect ratio. It is recommended that the aspect ratio be limited to 1.27. An increase in the thickness of the T-stiffened plate can effectively delay the occurrence of damage to the slit plate and corrugated plate. It is advised that the thickness of the T-stiffened plate should exceed that of the corresponding slit and corrugated plates. Increasing the thickness of corrugated plates from 3mm to 9mm has been shown to delay buckling and increase initial stiffness by 15.34% and 10.91%, respectively. The skeleton curve model for the metal damper was established. This model provides both experimental and theoretical reference for the engineering application of slit and corrugated metal dampers.
Source: Sustainable Structures
Language: English
Subfield: Civil and Structural Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4414202216