New Buckling-Restrained Brace for Seismically Deficient Reinforced Concrete Frames

Al-Sadoon, Zaid A.; Saatçioğlu, Murat; Palermo, Dan

doi:10.1061/(asce)st.1943-541x.0002439

Cited by 17 publications

(3 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For instance, a buckling-restrained brace (BRB) is engineered and employed to bolster strength, stiffness, and ductility against lateral loads. BRBs mitigate structural damage and augment the braced structures' seismic resilience [78,79].…”

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

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: 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

“…By restraining buckling in compression, symmetric and stable hysteretic behavior can be achieved in both tension and compression as highlighted in Figure 1(B). Different variants of BRB design have been proposed in the literature 1–7 . This study adopts the BRB concept proposed in 1 and shown in Figure 1(A).…”

Section: Introductionmentioning

confidence: 99%

“…Different variants of BRB design have been proposed in the literature. [1][2][3][4][5][6][7] This study adopts the BRB concept proposed in 1 and shown in Figure 1(A). As shown in Figure 1(A), the BRB core is sandwiched between the stoppers and the casing to prevent core buckling under compression.…”

Section: Introductionmentioning

confidence: 99%

Experimental testing of aluminum‐core buckling restrained knee braced Truss moment frames for earthquake resistance

Chhabra

Durgesh

2022

Earthq Engng Struct Dyn

View full text Add to dashboard Cite

Application of Buckling Restrained Braces (BRBs) with Truss Moment Frames (TMFs) results in a robust seismic force‐resisting system, herein referred to as Buckling Restrained Knee Braced Truss Moment Frame (BRKB‐TMF), which utilizes the advantages of both BRBs and TMFs. Although steel is commonly used to make the core of BRBs, previous studies have demonstrated the efficacy of annealed aluminum as a preferred core material because of its high ductility and high over‐strength. However, the deformation compatibility of the truss members with the aluminum‐core BRB in BRKB‐TMFs at high drifts is not well studied in the literature. Hence, an experimental study is performed on a scaled sub‐assemblage of a BRKB‐TMF frame designed using the Performance‐Based Plastic Design method. Cyclic tests are performed on 1:3 scale models of aluminum‐core BRB and BRKB‐TMF to evaluate their performance at drifts corresponding to Maximum Considered Earthquake intensity. Also, to further compare the performance of steel and aluminum as suitable BRB core materials, cyclic tests are performed on BRBs with steel and aluminum cores designed using a consistent criterion. The experiments demonstrated the superior performance of aluminum core BRB over steel core BRB. The experimental studies on the BRKB‐TMF concluded that per the design intent, the BRB acted like a fuse for the frame by restricting all the inelastic deformations to itself and the study frame could successfully meet the target drift criteria.

show abstract

Sliding gusset connections for improved seismic performance of BRB-RC frame: Damage-control design and subassemblage tests

Zhao

Zhang

Song

et al. 2023

Engineering Structures

View full text Add to dashboard Cite

New Buckling-Restrained Brace for Seismically Deficient Reinforced Concrete Frames

Cited by 17 publications

References 7 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

Experimental testing of aluminum‐core buckling restrained knee braced Truss moment frames for earthquake resistance

Sliding gusset connections for improved seismic performance of BRB-RC frame: Damage-control design and subassemblage tests

Contact Info

Product

Resources

About