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Response modification factor of mixed structures
Steel and Composite Structures, 2015Mixed structures consist of two parts: a lower part and an upper part. The lower part is usually made of concrete while the upper part is made of steel. Analyzing these structures is complicated and code-based design of them has many associated problems.
Nader Fanaie, Shahab O. Shamlou
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Response modification factors of chevron-braced frames
Engineering Structures, 2005The overstrength, ductility, and the response modification factors of special concentric braced frames (SCBFs) and ordinary concentric braced frames (OCBFs) were evaluated by performing pushover analysis of model structures with various stories and span lengths. The results were compared with those from nonlinear incremental dynamic analyses. According
Jinkoo Kim, Hyunhoon Choi
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Evaluating response modification factors of TADAS frames
Journal of Constructional Steel Research, 2012Abstract The current paper tries to evaluate overstrength, ductility and response modification factors in special moment resisting frames with TADAS (triangular-plate added damping and stiffness) devices. For that matter, multi-story buildings were considered during the course of study.
Mussa Mahmoudi, Mohammad Ghasem Abdi
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Response modification factor of suspended zipper braced frames
Steel and Composite Structures, 2015The suspended zipper bracing system is suggested to reduce the flaws of ordinary zipper braced and concentric inverted V braced frames. In the design procedure of suspended zipper bracing systems, columns and top story truss elements are strengthened.
Gholamreza Abdollahzadeh, Mehdi Abbasi
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Eukaryotic DNA damage responses: Homologous recombination factors and ubiquitin modification
Mutation Research - Fundamental and Molecular Mechanisms of Mutagenesis, 2018To prevent genomic instability disorders, cells have developed a DNA damage response. The response involves various proteins that sense damaged DNA, transduce damage signals, and effect DNA repair. In addition, ubiquitin modifications modulate the signaling pathway depending on cellular context. Among various types of DNA damage, double-stranded breaks
Lee, Nam Soo +3 more
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Lysine-specific proteolytic activity responsible for forsythia detaching factor modification
Archives of Oral Biology, 2016The objective of the present study was to clarify the lysine-specific proteolytic activity derived from periodontal pathogens responsible for Forsythia detaching factor (FDF) modification.The activity responsible for FDF modification in Tannerella forsythia and Porphyromonas gingivalis were evaluated by colorimetric assay using Ac-Arg-Ala-Lys-p ...
Hidetomo, Onishi +8 more
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Seismic Response Modification Factors for Reinforced Masonry Structural Walls
Journal of Performance of Constructed Facilities, 2011The current North American design standards provide seismic force modification factors for the rectangular masonry structural walls category only; no similar provisions for flanged and end-confined masonry structural walls exist. This study demonstrates that seismic force reduction factor (R) values calculated for rectangular walls was close to 5.0 ...
Marwan T. Shedid +2 more
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Response Modification Factor of Haunch Retrofitted Reinforced Concrete Frames
Journal of Performance of Constructed Facilities, 2020AbstractThis paper presents experimental and numerical research carried out on low-rise reinforced concrete (RC) frames that have weaker beam-column joints, which are retrofitted with steel haunche...
Junaid Akbar, Naveed Ahmad, Bashir Alam
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Evaluating response modification factors of concentrically braced steel frames
Journal of Constructional Steel Research, 2010Abstract Response modification factor is one of the seismic design parameters to consider nonlinear performance of building structures during strong earthquake. Relying on this, many seismic design codes led to reduce loads. The present paper tries to evaluate the response modification factors of conventional concentric braced frames (CBFs) as well ...
Mussa Mahmoudi, Mahdi Zaree
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Seismic response modification factor for steel slit panel-frames
Engineering Structures, 2019Abstract In this paper, the overstrength, ductility and response modification factors of moment resistant frame (MRF) with steel vertical slit panel (SSP-MRF) were investigated and determined. For this purpose, buildings with various stories were used.
Fatemeh Aliakbari, Hashem Shariatmadar
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