A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Energy dissipative beam-column connection for earthquake resistant moment frames
Abstract This study presents the details of experimental investigations on a novel energy dissipative beam-column connection. This work is in line with the current research focused on developing resilient structures by confining inelastic actions or damage within easily replaceable select number of elements in a structure at predetermined locations. Towards this, a novel connection consisting of two fuse links and a standard shear tab is developed such that the beam, column, shear tab and connecting bolts remain elastic, while sufficient energy dissipation is provided by the fuse links alone. The experimental programme entails component level tests on fuse plates and full-scale exterior beam-column joint sub-assemblage studies by using the novel connection to demonstrate its performance and to prove its efficacy. For this purpose, monotonic and standard pseudo-static reversed cyclic loading protocol is used. It is observed that the connection exhibits good energy dissipation characteristics by confining the damage within the fuse links keeping the primary structural members in elastic state. The same column and beam sections are used for all the experiments as no damage is observed, except bolt thread marks in beam. Also, a damaged connection could be easily dismantled within about 10–15 min and replaced with a new one.
Graphical abstract Display Omitted
Highlights A new partial-strength strong-axis steel beam-column moment connection is developed. The connection provides adequate stiffness, strength and plastic rotation capacity to be used as moment connection in special steel moment frame. The connection confines damage within itself with stable hysteretic loops, keeping the primary members elastic during strong earthquakes. The connection acts as a structural fuse. The fuse link connection can be easily removed and replaced (within about 10–15 min) after damage.
Energy dissipative beam-column connection for earthquake resistant moment frames
Abstract This study presents the details of experimental investigations on a novel energy dissipative beam-column connection. This work is in line with the current research focused on developing resilient structures by confining inelastic actions or damage within easily replaceable select number of elements in a structure at predetermined locations. Towards this, a novel connection consisting of two fuse links and a standard shear tab is developed such that the beam, column, shear tab and connecting bolts remain elastic, while sufficient energy dissipation is provided by the fuse links alone. The experimental programme entails component level tests on fuse plates and full-scale exterior beam-column joint sub-assemblage studies by using the novel connection to demonstrate its performance and to prove its efficacy. For this purpose, monotonic and standard pseudo-static reversed cyclic loading protocol is used. It is observed that the connection exhibits good energy dissipation characteristics by confining the damage within the fuse links keeping the primary structural members in elastic state. The same column and beam sections are used for all the experiments as no damage is observed, except bolt thread marks in beam. Also, a damaged connection could be easily dismantled within about 10–15 min and replaced with a new one.
Graphical abstract Display Omitted
Highlights A new partial-strength strong-axis steel beam-column moment connection is developed. The connection provides adequate stiffness, strength and plastic rotation capacity to be used as moment connection in special steel moment frame. The connection confines damage within itself with stable hysteretic loops, keeping the primary members elastic during strong earthquakes. The connection acts as a structural fuse. The fuse link connection can be easily removed and replaced (within about 10–15 min) after damage.
Energy dissipative beam-column connection for earthquake resistant moment frames
Saravanan, M. (author) / Goswami, Rupen (author) / Palani, G.S. (author)
2020-10-25
Article (Journal)
Electronic Resource
English