Experimental study of concrete masonry infills bounded by steel frames

2012 ◽  
Vol 39 (2) ◽  
pp. 180-190 ◽  
Author(s):  
Yi Liu ◽  
Sandra Soon
Keyword(s):  
Experimental Study ◽  
Steel Frames ◽  
Masonry Infills ◽  
Concrete Masonry

scholarly journals Fragility assessment of existing low-rise steel moment-resisting frames with masonry infills under mainshock-aftershock earthquake sequences

2021 ◽  
Vol 19 (6) ◽  
pp. 2483-2504
Author(s):  
Luigi Di Sarno ◽  
Jing-Ren Wu
Keyword(s):  
Seismic Vulnerability ◽  
Steel Frames ◽  
Steel Frame ◽  
Second Phase ◽  
Moment Frames ◽  
Damage Level ◽  
Masonry Infills ◽  
Aftershock Sequences ◽  
The Impact ◽  
Multiple Earthquakes

AbstractThis paper presents the fragility assessment of non-seismically designed steel moment frames with masonry infills. The assessment considered the effects of multiple earthquakes on the damage accumulation of steel frames, which is an essential part of modern performance-based earthquake engineering. Effects of aftershocks are particularly important when examining damaged buildings and making post-quake decisions, such as tagging and retrofit strategy. The procedure proposed in the present work includes two phase assessment, which is based on incremental dynamic analyses of two refined numerical models of the case-study steel frame, i.e. with and without masonry infills, and utilises mainshock-aftershock sequences of natural earthquake records. The first phase focuses on the undamaged structure subjected to single and multiple earthquakes; the effects of masonry infills on the seismic vulnerability of the steel frame were also considered. In the second phase, aftershock fragility curves were derived to investigate the seismic vulnerability of infilled steel frames with post-mainshock damage caused by mainshocks. Comparative analyses were conducted among the mainshock-damaged structures considering three post-mainshock damage levels, including no damage. The impact of aftershocks was then discussed for each mainshock-damage level in terms of the breakpoint that marks the onset of exceeding post-mainshock damage level, as well as the probability of exceeding of superior damage level due to more significant aftershocks. The evaluation of the efficiency of commonly used intensity measures of aftershocks was also carried out as part of the second phase of assessment.

Seismic Behavior of Moment‐Resisting Steel Frames: Experimental Study

1993 ◽  
Vol 119 (6) ◽  
pp. 1885-1902 ◽  
Author(s):  
Stephen P. Schneider ◽  
Charles W. Roeder ◽  
James E. Carpenter
Keyword(s):  
Experimental Study ◽  
Seismic Behavior ◽  
Steel Frames ◽  
Moment Resisting

Three-Strut Model for Concrete Masonry-Infilled Steel Frames

2003 ◽  
Vol 129 (2) ◽  
pp. 177-185 ◽  
Author(s):  
Wael W. El-Dakhakhni ◽  
Mohamed Elgaaly ◽  
Ahmad A. Hamid
Keyword(s):  
Steel Frames ◽  
Concrete Masonry
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