Seismic performance of steel moment frames considering the effects of column-base hysteretic behavior and gravity framing system

2021 ◽  
Vol 144 ◽  
pp. 106654
Author(s):  
Pablo Torres-Rodas ◽  
Francisco Flores ◽  
Sebastian Pozo ◽  
Bryam X. Astudillo
Keyword(s):  
Seismic Performance ◽  
Hysteretic Behavior ◽  
Moment Frames ◽  
Steel Moment Frames ◽  
Column Base

scholarly journals Column splice fracture effects on the seismic performance of steel moment frames

2017 ◽  
Vol 137 ◽  
pp. 93-101 ◽  
Author(s):  
Kimberly Stillmaker ◽  
Xai Lao ◽  
Carmine Galasso ◽  
Amit Kanvinde
Keyword(s):  
Seismic Performance ◽  
Moment Frames ◽  
Steel Moment Frames

scholarly journals Seismic Demands in Column Base Connections of Steel Moment Frames

2018 ◽  
Vol 34 (3) ◽  
pp. 1383-1403 ◽  
Author(s):  
Pablo Torres-Rodas ◽  
Farzin Zareian ◽  
Amit Kanvinde
Keyword(s):  
Time History ◽  
Base Plate ◽  
Moment Frames ◽  
Steel Moment Frames ◽  
Seismic Demands ◽  
Axial Forces ◽  
Plate Connections ◽  
Nonlinear Time History ◽  
Base Connections ◽  
Column Base

Methods for the seismic design of base connections in steel moment frames are well-developed and routinely utilized by practicing engineers. However, design loads for these connections are not verified by rigorous analysis. This knowledge gap is addressed through nonlinear time history simulations using design-level seismic excitation that interrogate demands in column base connections in 2-, 4-, 8-, and 12-story steel moment frames, featuring base connections that reflect current U.S. practice. The results indicate that: (1) for exposed base plate connections, lower bound (rather than peak) estimates of axial compression are suitable for design because higher axial forces increase connection strength by delaying base plate uplift; (2) even when designed as pinned (as in low-rise frames), base connections carry significant moment, which can be estimated only through accurate representation of base flexibility; and (3) the failure of embedded base connections is controlled by moment, which may be estimated either through overstrength or capacity-based calculations.

Seismic performance of steel moment frames with reduced beam sections

2000 ◽  
Vol 22 (8) ◽  
pp. 968-983 ◽  
Author(s):  
J. Shen ◽  
T. Kitjasateanphun ◽  
W. Srivanich
Keyword(s):  
Seismic Performance ◽  
Moment Frames ◽  
Steel Moment Frames
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