U-shaped metallic-yielding damper in building structures: Seismic behavior and comparison with a friction damper

Bagheri, Saman; Barghian, Majid; Saieri, Farhad; Farzinfar, Ali

doi:10.1016/j.istruc.2015.04.003

Cited by 85 publications

(27 citation statements)

References 9 publications

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“…18 Bagheri et al performed nonlinear time history analyses on friction damper devices (FDD) added to the 3-, 5-, and 10-story building frames. 19 In their study, the performance of the FDD in reducing maximum base shear of frames was slightly better compared with the U-shape damper.…”

Section: F I G U R E 2 Commonmentioning

confidence: 91%

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: 91%

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

Xue

Zhang

et al. 2020

Struct Control Health Monit

View full text Add to dashboard Cite

show abstract

“…Kaur et al compared the seismic performance of the moment-resisting frames equipped with a friction damper with moment frames and braced moment frames [8]. Bagheri et al assessed the seismic performance of structures with U-shaped dampers and the seismic performance of the frames including U shaped dampers compared to the frames equipped with friction damper [9]. Pall [10], Mualla and Belev evaluated the friction dampers which have been used in various shapes [11].…”

Section: The Effect Of Rotationalmentioning

confidence: 99%

The Effect of slit-friction hybrid damper on the Performance of Dual System

Khoshkroodi¹,

Sani²

2019

TOCIEJ

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Aims: The aim of the present paper is to evaluate the behavior of slit friction hybrid dampers (SFHD) on steel structures. Therefore, the behavior moment resisting steel frames of structures in original stats and structures equipped with hybrid damper with two different types of behavior was analyzed and evaluated. Background: The recent study evaluated the combined effect of shear-friction dampers and slit dampers with measurements of non-uniform strips in seismic protection for different levels of energy. The recent study was carried out a about hybrid dampers, consisting of friction and split dampers in response to small and large earthquakes. Previous results have shown the ability of inactive hybrid systems in improving the reaction of structures to traditional lateral-systems. Kim and Shin showed that structures consisted of hybrid dampers needed less repair cost and time. Methods: Pushover and time history were carried out on original structures and structures equipped with dampers, in 5 and 10 stories structures. Results: Analysis about the probability of collapse showed about 30% and 84%. Conclusion: According to the result, by adding the SFHD, increased stiffness by 17% in retrofitted structures such as drift and displacement of roof decreases by 27% and 20% in push over analysis, respectively. Also, displacement in time history analysis up to 55% reduces in average. Also, the results of the IDA show that adding the SFHD to structures significantly increases by 55% the spectral acceleration capacity in structures.

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“…A passive energy dissipation system has been widely used in seismic regions to absorb the input energy of earthquake excitations. In addition, a structural seismic control is commonly adopted to change or adjust the dynamic characteristics of the structure by installing special devices (e.g., seismic isolation bearing [10][11][12]), some other structural modifications (e.g., energy-dissipation braces and joints [13][14][15][16][17], fluid viscous energy absorber [18][19][20], and metallic energy absorber [21][22][23][24]), or additional substructures (e.g., tuned mass energy absorber [25][26][27]) in a certain part of the structure. These devices, which require no additional energy to operate, generate a controlled counterbalance force and provide the ability to improve energy dissipation in structural systems [28].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigations into Earthquake Resistance of Steel Frame Retrofitted by Low-Yield-Point Steel Energy Absorbers

et al. 2019

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This paper is the world’s first to highlight an experimental investigation into the earthquake responses of a steel frame retrofitted by novel metallic bending energy absorbers made of low-yield-point steel with the yield strength of approximately 100 MPa. New results have been achieved by conducting comprehensive shaking table tests on a quarter-scaled model of a two-story, one-span building structure subjected to incremental intensity levels of input earthquake records. The detailed information of the specimens, material properties, monitoring sensors, and dynamic loading mechanisms has been presented. The experimental results in terms of seismic phenomena, dynamic characteristics, acceleration, inter-story drift ratios, and strain distributions are also analyzed by the data collected from a wide range of sensors. It is found that the seismic failure of the specimens depends largely on the energy absorbers, which dissipate the majority of seismic input energy in order to prevent the parent steel frame from being damaged by a severe earthquake. In addition, the retrofitted structure sufficiently satisfies the design criteria considering allowable drift limits under both frequent and rare earthquakes. This indicates the influential role of the novel low-yield-point absorber, in that the overall seismic performance of the retrofitted structure can be improved adequately for survival in high-intensity seismic fortification areas.

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U-shaped metallic-yielding damper in building structures: Seismic behavior and comparison with a friction damper

Cited by 85 publications

References 9 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

The Effect of slit-friction hybrid damper on the Performance of Dual System

Experimental Investigations into Earthquake Resistance of Steel Frame Retrofitted by Low-Yield-Point Steel Energy Absorbers

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