Simplified assessment of the seismic collapse capacity of flexible moment-resisting steel frame structures

2012 ◽  
pp. 483-490
Keyword(s):  
Steel Frame ◽  
Frame Structures ◽  
Seismic Collapse ◽  
Moment Resisting ◽  
Steel Frame Structures

Drift control in moment resisting steel frame structures

1994 ◽  
Vol 3 (3) ◽  
pp. 163-181 ◽  
Author(s):  
Hiroyuki Fuyama ◽  
Helmut Krawinkler ◽  
Kincho H. Law
Keyword(s):  
Steel Frame ◽  
Frame Structures ◽  
Moment Resisting ◽  
Steel Frame Structures ◽  
Drift Control

scholarly journals Seismic retrofit of steel frame structures

2020 ◽  
Vol 15 (2) ◽  
pp. 106-117
Author(s):  
Magdy Ismail
Keyword(s):  
Seismic Hazard ◽  
Numerical Study ◽  
Steel Structures ◽  
Seismic Retrofit ◽  
Steel Frame ◽  
Frame Structures ◽  
Base Shear ◽  
Seismic Force ◽  
Moment Resisting ◽  
Steel Frame Structures

Abstract:Moment resisting frames are considered as an effective seismic force resisting system that is used for steel structures. Some of these structures that were built in high seismic hazard zones were designed according to old strength-based design codes. Currently, these structures do not meet the requirements of the new seismic codes. Therefore, the seismic retrofit of these structures is mandatory and cannot be overlooked. Steel braces and concrete-steel composite elements are common solutions for enhancing the seismic behavior of existing steel frame structures. This paper presents a numerical study that evaluates different possible techniques for the seismic retrofit of existing steel moment-resisting frame structures. The study investigates the performance of three multi-story buildings with different heights that are located in a high seismic hazard zone. Three retrofit techniques were introduced including; 1) X-Steel braces, 2) buckling restrained composite braces, and 3) composite concrete-steel plate shear walls. The seismic performance enhancement of the studied structures was evaluated in terms of the structure’s fundamental period, maximum inter-story drift and maximum base shear-to-weight ratios. Moreover, the cost of retrofitting material was estimated for each technique and they were compared to select the retrofit technique with the least constitutive material cost.

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