A review of research on steel eccentrically braced frames

Kazemzadeh Azad, Sina
Topkaya, Cem
This paper reviews the research conducted on steel eccentrically braced frames (EBFs). Both component level and system level responses for such braced frames are treated and discussed. For the component level response, a thorough review of the investigations on links, which are the primary sources of energy dissipation in EBFs, has been presented. The results of experimental and numerical studies on strength, rotation capacity, and overstrength of links are discussed. Furthermore, studies on the effects of axial force, the presence of a concrete slab, the loading history, compactness, link detailing, and the lateral bracing on link behavior are summarized. Relevant available research on link-to-column connections is revisited. Different approaches for the numerical modeling of links are also given. For the system level response, characteristics of EBF systems are discussed in light of the capacity design approach. Findings of numerical studies on the seismic performance of EBFs are discussed to provide insight into suitable response factors utilized in the design of these systems. Additionally, special topics and emerging applications of EBFs, such as replaceable links, are provided. The impact of research findings on the design of EBF systems is demonstrated considering the AISC Seismic Provisions for Structural Steel Buildings. Finally, future research needs for improvement of EBF design and application are identified and presented.


Design overstrength of steel eccentrically braced frames
Kusyilmaz, Ahmet; Topkaya, Cem (2013-09-01)
The paper reports an analytical study on the design overstrength of steel eccentrically braced frames (EBFs). The study aimed at examining the influence of geometrical factors and seismic hazard on the design overstrength of EBFs. Pursuant to this goal a computer program which facilitates EBF designs was developed. The algorithm of the program adopts the lightest uniform frame design and library of link-beam-brace sub-assemblages concepts. The design output from the program was compared with published solut...
Replaceable links with direct brace attachments for eccentrically braced frames
Bozkurt, Mehmet Bakir; Topkaya, Cem (2017-10-25)
This paper reports findings of an experimental study conducted on replaceable links for steel eccentrically braced frames (EBFs). A replaceable link detail which is based on splicing the directly connected braces and the beam outside the link is proposed. This detail eliminates the need to use hydraulic jacks and flame cutting operations for replacement purposes. Performance of this proposed replaceable link was studied by conducting eight nearly full-scale EBF tests under quasi-static cyclic loading. The l...
Numerical studies on eccentrically braced frames
Kuşyılmaz, Ahmet; Topkaya, Cem; Sarıtaş, Afşin; Department of Civil Engineering (2014)
Numerical studies were performed on eccentrically steel braced frames to ascertain seismic performance factors and to examine dynamic characteristics of eccentrically braced frames (EBF). Pursuant to this goal a computer program which facilitates EBF designs was developed. In the first phase, the approximate period formula given in ASCE7-10 was evaluated and a technique based on global deformation characteristics was developed to improve the fundamental period estimates for EBFs. The results indicate that t...
Performance comparison of BRBFs designed using different response modification factors
Güner, Tuğberk; Topkaya, Cem (Elsevier BV, 2020-12-15)
This paper presents details of the numerical examination and performance comparison of steel buckling restrained braced frames (BRBFs) designed with different response modification factors, using the next-generation performance assessment approach. Archetypal BRBF designs were conducted following the US provisions and considering response factors equal to or less than the codified limit. The archetypical buildings were subjected to ground-motions acquired from the FEMA P695 Far-Field record-set and scaled t...
A critical review of the state of the art of solid-phase microextraction of complex matrices III. Bioanalytical and clinical applications
Souza-Silva, Erica A.; Reyes-Garces, Nathaly; Gomez-Rios, German A.; Boyacı, Ezel; Bojko, Barbara; Pawliszyn, Janusz (2015-09-01)
Part III of this review focuses on the state of the art of solid-phase microextraction (SPME) applied to bioanalytical and clinical analysis. We describe and discuss recent applications and new advances in terms of extraction phases and SPME configurations. Biocompatible coatings for the direct extraction of different analytes from urine, blood and tissues are perhaps the most promising approach in SPME. We present a review of the different calibration strategies commonly employed, and a discussion on the a...
Citation Formats
S. Kazemzadeh Azad and C. Topkaya, “A review of research on steel eccentrically braced frames,” JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH, pp. 53–73, 2017, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/45901.