Experimental Study on Beam-to-Column Connections of Steel Frame Structures with Steel Slit Dampers

Köken, Ali; Köroğlu, Mehmet Alpaslan

doi:10.1061/(asce)cf.1943-5509.0000553

Cited by 37 publications

(6 citation statements)

References 14 publications

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“…Te evaluation approach takes into account elements like lifelines and system redundancy in the building. Many investigations are provided for assessing the robustness of structures under a numerical model with multishocks [7].…”

Section: Introductionmentioning

confidence: 99%

Optimal Evaluation of the Rheological Parameters for STF Dampers in Semi‐Rigid Joints of Steel Structures Using Response Surface Method

Freya

Senthil

2022

Advances in Civil Engineering

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This work deals with the multiobjective optimization of rheolohical parameters on a novel designed flexible joints using shear thickening fluid dampers (STFD) on steel structures. The proposed damper consists of the shear thickening fluid (STF) with the combination of nano-silica and PEG (400) sonicated to achieve colloidal dispersion of nanoparticles. Series of cyclic loading were imposed on the frames equipped with STF dampers to assess their impacts on T-steel frames. The stiffener end plate is bolted over the corner of the joints that are subjected to bending moment. The multi-objective optimization using the response surface method of the rheological parameters for STF dampers was studied in order to reduce the dynamic forces and moments produced in a semi-rigid joint of the steel structures. Results from the analysis were used to obtain correlations between the response variables and the input factors (effective stiffness of 449.89 N/mm, complex viscosity of 98.69 Pa.s, and damping constant of 446.99 N.s/mm) for the proposed STF damped semi-rigid joints.

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Section: Introductionmentioning

confidence: 99%

Optimal Evaluation of the Rheological Parameters for STF Dampers in Semi‐Rigid Joints of Steel Structures Using Response Surface Method

Freya

Senthil

2022

Advances in Civil Engineering

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“…Along the same lines, Koken and Alpaslan Koroglu [24] have worked on the implementation of slit dampers at the beam to column connection zone. The study is concentrated in limiting the damage only to slit dampers under heavy lateral loads and keeping the surrounding beam and column elastic and undamaged.…”

Section: Straight Steel Shear Plates and Wallsmentioning

confidence: 99%

“…In another study which have been made by Koken and Koroglu [24] the use of butterflyshaped shear panels has been investigated. The butterfly-shaped panels have been used in the connections of beam and column.…”

Section: Performance Of Butterfly-shaped Shear Panelsmentioning

confidence: 99%

Finite Element Evaluation Of Energy Dissipating Steel Plate Fuse Links

Shah¹

2021

Preprint

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<div>Steel plate devices are widely used for providing energy dissipation in earthquake resistant structures. The cyclic response of these steel plate fuses varies depending on different design factors related to the fuse link geometry or its material property. This research presents a numerical study on the cyclic response of steel plate fuses with butterfly-shaped and straight shear links. Finite element models are first developed and validated against past experimental studies. A sensitivity study using the design-of-experiment method is performed to statistically determine the effects of different design parameters on the cyclic response of steel plate shear links. Seven design factors related to the material or geometry of steel plate fuses are considered as input factors. The cyclic response of fuses is examined in terms of initial stiffness, yield strength, ultimate stiffness, effective damping, maximum strength, and ductility. From the results of the sensitivity analysis, it is shown that the overall cyclic behavior of steel plate fuses is most significantly influenced by the fuse link end-width and thickness while the fuse link length and mid-width are partially influential on some of the cyclic responses. In addition, an optimization study is performed to determine the optimal ranges for the design factors that result in simultaneous response optimization conditions, such as maximized energy dissipation capability and ductility. Predictive equations are also developed and validated for the cyclic response characteristics of steel plate shear links. Based on the confirmation runs, it is believed that these equations can accurately predict the acquired responses for steel plate fuse links.</div>

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“…Elliptic slit dampers were installed at the bottom of the beam flange. The effect of steel slit dampers on beam-to-column connections was investigated experimentally and numerically by Köken and Köroğlu [202]. The same authors [203] have also tested beam to column connections with different shapes of steel slit dampers in another study [203] under cyclic loading in both experimental and numerical experiments.…”

Section: Steel Slit Dampersmentioning

confidence: 99%

Development of Steel Yielding Seismic Dampers Used to Improve Seismic Performance of Structures: A Comprehensive Review

Behnamfar¹,

Almohammad-albakkar²

2023

IJE

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Seismic excitation can cause significant energy to be released within structures. By using special devices, this energy can be consumed and dissipated without deforming structural members significantly. Due to this, structural damage is minimized, casualties are prevented during earthquakes, and structures are extended in their useful life. Over the past five decades, it has been widely acknowledged that steel yielding dampers are among the best energy dissipation devices. It has been stated that the hysteretic behavior of steel yielding dampers could vary slightly depending on their geometry. From a practical point of view, they are suitable for the improvement of seismic safety in new and existing structures. The purpose of this paper is to present a review related to steel yielding dampers, their development, various types, and applications, in order to help understand the role of these dampers in improving the seismic performance of structures. In terms of their shape, steel yielding dampers can be categorized as steel plate dampers, pipe dampers, curved dampers, and slit dampers. The most common use of steel plate, such as ADAS and TADAS, and pipe dampers is within braced frames, whereas U-shaped, Jshaped, and S-shaped dampers are mostly seen in frames with chevron bracing. Steel curved dampers with a 60° angle in a steel-braced frame, on the other hand, provide the best energy dissipation and frame strength. In this direction, until today, steel slit dampers have been found to be the most commonly used steel yielding dampers.

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Experimental Study on Beam-to-Column Connections of Steel Frame Structures with Steel Slit Dampers

Cited by 37 publications

References 14 publications

Optimal Evaluation of the Rheological Parameters for STF Dampers in Semi‐Rigid Joints of Steel Structures Using Response Surface Method

Optimal Evaluation of the Rheological Parameters for STF Dampers in Semi‐Rigid Joints of Steel Structures Using Response Surface Method

Finite Element Evaluation Of Energy Dissipating Steel Plate Fuse Links

Development of Steel Yielding Seismic Dampers Used to Improve Seismic Performance of Structures: A Comprehensive Review

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