Application of slit link beam in eccentrically braced frames

Askariani, Seyed Saeed; Garivani, Sadegh; Aghakouchak, Ali Akbar

doi:10.1016/j.jcsr.2020.106094

Cited by 34 publications

(4 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this context, the radius of the fillet at the end of the strips can be considered another factor influencing the behavior of the SSDs. Previous research findings suggest that a minimum value for this parameter should be observed to mitigate the risk of premature fractures caused by stress concentration at the strip's end regions [66].…”

Section: Basic Theoretical Analysismentioning

confidence: 99%

“…The bending moment strength primarily depends on the width of the central region. As an alternative to conventional link beams, Askariani et al [66] introduced the concept of a slit link beam to enhance the structural performance of eccentrically braced frames (EBFs). Vertical strips can be formed by incorporating perforations in the web to create the link beam (refer to Figure 12(a)).…”

Section: Application Of the Steel Slit Damper In Braced Framesmentioning

confidence: 99%

See 1 more Smart Citation

Seismic Resilience of Steel-Braced Frames Incorporating Steel Slit Dampers: A Review and Comparative Numerical Analysis

Al-Sadoon,

Almohammad-albakkar

2024

Civ Eng J

View full text Add to dashboard Cite

Steel dampers, specifically steel slit dampers (SSDs), are crucial for enhancing the seismic resilience of buildings by absorbing energy and mitigating damage. SSDs are celebrated for their ability to produce stable hysteretic behavior, owing to the inelastic deformation of their strips, alongside benefits such as lightness, ease of manufacture, and straightforward post-earthquake replacement. This research extensively examines SSD applications, design principles, and innovations in their modeling, optimization, and production processes. The literature highlights SSDs' consistent performance in resisting both compression and tension, their adaptability in strength, ductility, and energy dissipation through modifications in strip configurations and the superiority of non-prismatic and hourglass-shaped designs over traditional options. Numerical analyses have been conducted to assess the effectiveness of non-prismatic slit dampers in comparison to their prismatic counterparts within braced frames. Three distinct braced frame configurations have been analyzed: one with a diagonal brace without a damper, another featuring a uniform prismatic slit damper, and a third incorporating a non-prismatic slit damper with an hourglass shape. The analysis primarily compared these systems' hysteresis behavior, ductility, and energy dissipation capacities. Results indicate a significant enhancement in performance when utilizing non-prismatic slit dampers. Notably, these dampers exhibited a remarkable 69% increase in cumulative energy dissipation compared to prismatic ones. Furthermore, the study reveals that a steel slit damper-braced frame, when equipped with optimally designed slit geometries, can tolerate inter-story drifts in excess of 2% while simultaneously achieving a greater than 12% increase in energy dissipation efficiency. Doi: 10.28991/CEJ-2024-010-04-019 Full Text: PDF

show abstract

Section: Basic Theoretical Analysismentioning

confidence: 99%

Section: Application Of the Steel Slit Damper In Braced Framesmentioning

confidence: 99%

Seismic Resilience of Steel-Braced Frames Incorporating Steel Slit Dampers: A Review and Comparative Numerical Analysis

Al-Sadoon,

Almohammad-albakkar

2024

Civ Eng J

View full text Add to dashboard Cite

show abstract

“…In addition to its large shear strength, the damper also showed a high energy dissipation capacity, a stable hysteresis curve, and positive economic characteristics. Askariani et al [182] suggested using slit link beams in EBFs. Their proposition was to create slits in the web of the link beam so that it could be divided into several vertical strips.…”

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

View full text Add to dashboard Cite

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.

show abstract

“…The combination of experimental analysis and numerical modeling allow the creation of a design and fitting process [13]. For instance, Askariani et al proved that high energy dissipation capacity can be achieved by using slit-link beam in an eccentrically braced frame [31]. The sequential procedure in Figure 1 may be extended to analyzing the design and retrofit of flexible steel on special moment resisting frames [32].…”

Section: Combined Numerical and Experimental Evaluation Process Of Msdsmentioning

confidence: 99%

Evaluation of the Seismic Performance of Single-Plate Metallic Slit Dampers Using Experimental and Numerical Data

Payawal,

Kim

2023

Buildings

View full text Add to dashboard Cite

Passive energy dissipation systems and devices are helpful in mitigating the danger of earthquake damage to structures. Metallic slit dampers (MSDs) are one of the most efficient and cost-effective solutions for decreasing seismic energy intake. The potential importance of MSDs in managing vibrations and limiting structural fatigue continues to grow as research advances and new materials and designs are introduced. This study evaluated the seismic performance of single-plate MSDs (SPMSDs) through a combination of numerical simulation and assessment of experimental results. ABAQUS software was used to create an assembly consisting of endplates, bolts, and SPMSDs. A real-world earthquake scenario was simulated using cyclic loads based on ASCE/SEI standards, and displacement-measuring devices such as strain gauges and LVDT were employed to record the behavior of the SPMSDs. The results of the experiment are used to assess the compliance of the SPMSDs and discuss their behavior as they undergo minimum and maximum displacements due to minimum and maximum applied forces. The energy dissipation capabilities of the dampers are presented by analyzing and comparing the area of their hysteresis loops, equivalent viscous damping, and their damping ratios. Actual failure modes are identified and shown to describe the limitations and potential vulnerability of the dampers. The relative error between the lowest and greatest recorded forces from experimental data and numerical simulation ranges from 4.4% to 5.7% for SPMSD 1 and from 1.6% to 2.1% for SPMSD 2, respectively. These deviation values represent a satisfactory level of precision, demonstrating that the numerical simulation accurately predicts the actual performance and behavior of the dampers when subjected to cyclic stress. The topology optimization performed in this study yielded an improved geometry of the SPMSD suited for a corresponding maximum considered earthquake (MCER) displacement of ±33 mm. This research also suggests practical implementations of the investigated and improved SPMSDs.

show abstract

Application of slit link beam in eccentrically braced frames

Cited by 34 publications

References 38 publications

Seismic Resilience of Steel-Braced Frames Incorporating Steel Slit Dampers: A Review and Comparative Numerical Analysis

Seismic Resilience of Steel-Braced Frames Incorporating Steel Slit Dampers: A Review and Comparative Numerical Analysis

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

Evaluation of the Seismic Performance of Single-Plate Metallic Slit Dampers Using Experimental and Numerical Data

Contact Info

Product

Resources

About