Probabilistic Seismic Assessment of SMFs with Drilled Flange Connections Subjected to Near-Field Ground Motions

Probabilistic demand assessment of bridges considering the effect of corrosion and seismic loading over time

“…Fragility curves have been used in different approaches as the basis for obtaining exceedance damage rates or probabilistic demand hazard curves: Mackie and Stojadinović (2001) evaluates the seismic demand analysis in typical bridges located in California; Gavabar and Alembagheri (2018) proposes a methodology to estimate seismic demand hazard curves in gravity dams; probabilistic demand hazard curves are estimated in concrete buildings (Liu et al 2016), in steel buildings with different types of connections (Maleki et al 2019), in steel buildings with buckling-restrained braces (Mahdavipour 2016;Afsar Dizaj et al 2018), and in steel buildings with butterfly-shaped fuses (Zaker Esteghamati and Farzampour, 2020).…”

Investigation of Behavior of Interior Steel Connections With Openings in Beam Web and Flange Under Monotonic Loading

“…Utilizing drilled flange moment resisting connections is another approach to overcome the problem of weld brittle failure in the beam-to-column connections which is studied by many researchers and is almost in its early stages [17,[31][32][33][34][115][116][117], among which the optimum algorithm of drilled holes in order to achieve desired performance of structure is proposed by [34,[116][117]; in this regard, initial suggestion of design algorithm for drilled flange connections as well their behavior evaluation under seismic load was performed by [118]. Evaluation of seismic performance of DF connections was reported by [119], leading to the conclusion that DF connections are capable of exhibiting desired behavior. In their 2019 study, [30] used IDA analysis method in order to investigate the seismic performance of special moment resisting frames, the results revealed that DF connections performed similar to RBS connections in case of low-rise buildings, while in high-rise buildings, DF connections demonstrated a more sought-after behavior with 43% higher seismic capacity.…”

“…Although comparing the behavior of interior connections with voids in beam web or flange has received numerous attention, there exists a significant ambiguity regarding the behavior of frames with web or flange cuts since cutting a part of the beam alters the force transfer from the beam to the column [95,129] and parameters affecting the strength of the frame such as opening area, shape, use of stiffeners, etc., are of great significance in the behavior, resistance, energy dissipation capacity, and failure mode of the connections [2,[23][24][25]114]. Hence, numerous studies have been conducted on steel connections including Reduced Beam Section (RBS) [64][65][66][67][68][69][70][71][72][73][74][75][76][77][78][79], Reduced Web Section (RWS) , Drilled Flange Connection (DFC) [115][116][117][118][119][120][121][122][123][124][125], and many design codes and standards [1,10,[18][19][20][27][28][29] employed the introduced connections as an engineered connections. Since each connection has advantages and disadvantage, e.g.…”

Volume 17 Number 4

“…Utilizing drilled flange moment resisting connections is another approach to overcome the problem of weld brittle failure in the beam-to-column connections which is studied by many researchers and is almost in its early stages [17,[31][32][33][34][115][116][117], among which the optimum algorithm of drilled holes in order to achieve desired performance of structure is proposed by [34,[116][117]; in this regard, initial suggestion of design algorithm for drilled flange connections as well their behavior evaluation under seismic load was performed by [118]. Evaluation of seismic performance of DF connections was reported by [119], leading to the conclusion that DF connections are capable of exhibiting desired behavior. In their 2019 study, [30] used IDA analysis method in order to investigate the seismic performance of special moment resisting frames, the results revealed that DF connections performed similar to RBS connections in case of low-rise buildings, while in high-rise buildings, DF connections demonstrated a more sought-after behavior with 43% higher seismic capacity.…”

“…Although comparing the behavior of interior connections with voids in beam web or flange has received numerous attention, there exists a significant ambiguity regarding the behavior of frames with web or flange cuts since cutting a part of the beam alters the force transfer from the beam to the column [95,129] and parameters affecting the strength of the frame such as opening area, shape, use of stiffeners, etc., are of great significance in the behavior, resistance, energy dissipation capacity, and failure mode of the connections [2,[23][24][25]114]. Hence, numerous studies have been conducted on steel connections including Reduced Beam Section (RBS) [64][65][66][67][68][69][70][71][72][73][74][75][76][77][78][79], Reduced Web Section (RWS) , Drilled Flange Connection (DFC) [115][116][117][118][119][120][121][122][123][124][125], and many design codes and standards [1,10,[18][19][20][27][28][29] employed the introduced connections as an engineered connections. Since each connection has advantages and disadvantage, e.g.…”