Removable friction dampers for low-damage steel beam-to-column joints

Latour, Massimo; D’Aniello, Mario; Zimbru, Mariana; Rizzano, Gianvittorio; Piluso, Vincenzo; Landolfo, Raffaele

doi:10.1016/j.soildyn.2018.08.002

Cited by 120 publications

(66 citation statements)

References 31 publications

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“…Latour et al developed a new friction damper composed of friction plates with different materials from the proposed studies, 15 and its seismic performance was validated through an experimental campaign. Also, Latour et al designed an easily removable friction damper for low-damage steel beam-to-column joints, 16 and the experimental tests and numerical simulations were discussed. For the purpose of minimizing the destruction of the multistory hybrid timber-steel structures after severe earthquakes, Hashemi et al presented a hybrid damage avoidant steel-timber wall system using the innovative resilient slip friction (RSF) joint.…”

Section: F I G U R E 2 Commonmentioning

confidence: 99%

Experimental and numerical analysis on seismic performance of straight‐tenon joints reinforced with friction damper

Xue

Zhang

et al. 2020

Struct Control Health Monit

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Summary A comprehensive study has been carried out on the seismic behavior of straight‐tenon joints (STJs) reinforced with the state‐to‐art friction damper. Quasi‐static cyclic tests were conducted on three reinforced test specimens and one contrast joint, and friction coefficients were selected as the variables. The failure modes and the cyclic behaviors of both STJs and fiction plates were obtained. Numerical simulation was conducted to investigate the plastic deformation and stress distribution of the STJs, and a parametric study on the friction coefficient was also performed. Results show that the main failure modes of the reinforced STJs include the pressing dents on the column, the tenon extraction, and the surface of friction plate being smoothed. Increasing the friction coefficients of the friction plates helps to reduce the extraction of the tenon and promote the stiffness, bending moment, and energy dissipation capacities of the reinforced STJs. Furthermore, 0.4 is considered as the optimal friction coefficient in terms of the cyclic behavior and energy dissipation of reinforced STJs. Additionally, the composition of energy dissipation of friction plates first decreases and then slightly increases as far as the rotation increases. Numerical simulation agrees well with the experimental results, and the parametric study shows that for the reinforced STJ with a higher friction coefficient, higher yielding moments and ultimate moments can be obtained, but the friction coefficients have little effect on the ductility.

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Section: F I G U R E 2 Commonmentioning

confidence: 99%

Experimental and numerical analysis on seismic performance of straight‐tenon joints reinforced with friction damper

Xue

Zhang

et al. 2020

Struct Control Health Monit

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“…One of the most commonly used low damage connections is friction connection and it has been studied by many scholars. The sliding hinge joint (SHJ) beam-column friction connection which is known as asymmetric friction connection (AFC) was proposed by Clifton [ 8 ] for the first time ( Figure 1 [ 9 ]) and it has been further developed by many scholars [ 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 ]. This kind of AFC beam-column connection generally uses friction damper to replace the traditional rigid structure connections.…”

Section: Introductionmentioning

confidence: 99%

Seismic Behavior of Steel Column Base with Slip-Friction Connections

Liu

2020

Materials

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Traditional rigid column base connections are damaged to different degrees after an earthquake and the damage is generally nonrecoverable. Thus, the cost of repairing or dismantling is quite high. A new type of slip-friction column base connection is proposed in this paper, which aims to replace the yielding energy dissipation of the traditional column base connection by the sliding friction energy dissipation between the arc endplates, thus achieving the design objective of damage-free energy dissipation. Finite element simulation was conducted to study the hysteretic performance of the proposed connections considering different axial compression ratios. The research indicates that both kinds of the proposed connections show good energy dissipation behavior and the increase of axial compression force can increase the energy dissipation ability. It also shows that the two kinds of connections can achieve the objective of damage-free energy dissipation. For the proposed connection, future research is still needed such as corresponding tests in the laboratory, the effect of the connection on the whole structure, and the re-centering systems for the connections.

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“…Low-damage seismic resistant connections, such as sliding hinge joints and asymmetric friction connections with friction interfaces made of brass, steel or aluminum were subsequently investigated [22]. Presently, a novel configuration friction kit was employed containing removable haunches or ribs with slotted holes, and stainless steel friction pads were horizontally or vertically equipped together with L-stubs at the lower beam flange (based on [23]), aiming to detach the friction dampening device from both the bottom beam flange or the column surface and thus simplify the reparability. The results demonstrated that the rotation action of the beam around the pin at the top T-stub had a promising energy concentration as a result of the detachable friction damper, as well as negligible plastic deformation in other components; however, the disadvantage of occupying available height cannot be overlooked.…”

Section: Introductionmentioning

confidence: 99%

Study on New Bolted T-Stub Connection with Inserted Plates under Axial and Cyclic Loads

Zhu

2020

Applied Sciences

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The bolted T-stub connection joining beam with column is being widely applied. To enhance the energy dissipation capacity of conventional T-stub connections, two rectangular plates are proposed to be inserted between the T-stub and column, so that the T-stub flange can yield both under tensile and compressive loads. This study put forward a mechanical model of a new T-stub connection with inserted plates and investigated important factors that could affect its mechanical behavior through experimental tests. Thirty specimens were designed with different configurations that differed according to the existence or absence of inserted plates, the fabrication method and the width of inserted plates. These configurations were tested under axial and cyclic loading conditions, and results showed that the proposal aiming to improve the energy dissipation capacity was feasible. The mechanical model presented coincided with the test observation and data. The advent of two inserted plates elevated the load bearing capacity, stiffness and ductility of connections under compression, whereas in tension the properties were not substantially enhanced. The welded T-stub connections outperformed those cut from standard section steel. The energy dissipated by connections with inserted plates was about 150% of that by traditional connections without inserted plates. Only within a reasonable range can the increment of plate width promote the energy dissipation capacity of T-stub connections. The optimum width of plates in terms of energy consumption accounted for around 31% of the overall width of connections.

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Removable friction dampers for low-damage steel beam-to-column joints

Cited by 120 publications

References 31 publications

Experimental and numerical analysis on seismic performance of straight‐tenon joints reinforced with friction damper

Experimental and numerical analysis on seismic performance of straight‐tenon joints reinforced with friction damper

Seismic Behavior of Steel Column Base with Slip-Friction Connections

Study on New Bolted T-Stub Connection with Inserted Plates under Axial and Cyclic Loads

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