Performance comparison of brbfs designed using different response modification factors

Güner, Tuğberk
In this study, buckling restrained braced frames (BRBFs) designed with various response modification factors were examined by numerical analysis and their performances were compared using the next-generation performance assessment approach. Three, six, and nine-story archetypes (low to medium-rise) with response modification factors in the range of 1 to 8 were designed using ASCE7-16, AISC 341-16, and AISC 360-16 specifications. A total of 24 archetypes were analyzed using nonlinear dynamic analysis procedures by subjecting them to both MCE and DBE level ground motions. The ground motion histories were acquired from the FEMA P-695 Far-Field record-set and scaled according to the requirements of the FEMA P-695 methodology. FEMA P-58 methodology was utilized to assess performance. For performance evaluation; peak and residual interstory drift ratios and peak story accelerations were determined and converted to performance quantification values by using the Performance Assessment Calculation Tool (PACT), which is supplied as a part of FEMA P-58 methodology. The probabilistic distributions of repair cost and repair time, unsafe placard probability, and irreparable residual drift probability were obtained, and a comparative study of response modification factors in terms of these results was conducted. The results showed that designing BRBFs using lower response factors increases post-earthquake performance until the point where acceleration governed nonstructural damages surpass the structural damages. An ideal response factor is proposed herein based on the consequence measures. The study was complemented by investigating the behavior of self-centering BRBFs and comparing their performance with those of conventional BRBFs.


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...
Performance comparisons of seismic assessment methods with PSD test results of a deficient RC frame
Ozcebe, G.; KURT, ELİF; Binici, Barış; Kurç, Özgür; Canbay, Erdem; Akpinar, U. (2009-12-01)
The accuracy of estimating the performance levels of a deficient RC frame using linear elastic and nonlinear dynamic analysis is evaluated in this study. This was achieved by comparing the response of a structure tested with pseudo-dynamic testing and estimated by the linear elastic assessment procedures along with nonlinear dynamic analysis. The test structure (three bay-two storey planar frame) is a 1/2 scale reinforced concrete frame having masonry infill walls in the central span. The test frame contain...
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 the 3D-printed and injection-molded PLA and its elastomer blend and fiber composites
Kaynak, Cevdet (2019-04-01)
The purpose of this study was to compare the performance of polylactide (PLA)-based materials shaped by the traditional injection molding technique versus three-dimensional (3D)-printing additive manufacturing. Comparisons were performed not only for neat PLA but also for its thermoplastic polyurethane elastomer (TPU) blend and for its E-glass fiber (GF)-reinforced composites. Performance comparison of the injection-molded and 3D-printed specimens was especially conducted to compare their mechanical propert...
Comparative analysis of variability modelling approaches in component models
Suloglu, Selma; Kaya, Muhammed Çağrı; Karamanlıoğlu, Alper; Entekhabi, Sina; Nikoo, Mahdi Saeedi; Tekinerdogan, Bedir; Doğru, Ali Hikmet (2018-12-01)
The results of a systematic literature review conducted for variability modelling in software component models are analysed and presented here. A well-planned protocol guided the screening of 3230 papers that resulted in the identification of 55 papers. Reviewing these papers, 23 of them were considered as primary studies related to our research questions. A comparison framework is introduced to further understand, assess, and compare those selected papers. Observations about the important aspects of compon...
Citation Formats
T. Güner, “Performance comparison of brbfs designed using different response modification factors,” M.S. - Master of Science, Middle East Technical University, 2020.