Disproportionate collapse performance of partially restrained steel frames with bolted T-stub connections

2011 ◽  
Vol 33 (1) ◽  
pp. 32-43 ◽  
Author(s):  
Guoqing Xu ◽  
Bruce R. Ellingwood
Keyword(s):  
Steel Frames ◽  
Disproportionate Collapse ◽  
Partially Restrained

Probabilistic study of the behavior of steel frames with partially restrained connections

2001 ◽  
Vol 23 (11) ◽  
pp. 1410-1417 ◽  
Author(s):  
Shuji Sakurai ◽  
Bruce R. Ellingwood ◽  
Shigeru Kushiyama
Keyword(s):  
Steel Frames ◽  
Probabilistic Study ◽  
Partially Restrained

Inelastic analysis of partially restrained unbraced steel frames

1997 ◽  
Vol 19 (11) ◽  
pp. 891-902 ◽  
Author(s):  
Christopher M. Foley ◽  
Sriramulu Vinnakota
Keyword(s):  
Steel Frames ◽  
Inelastic Analysis ◽  
Partially Restrained

Analytical Models for Determining Rotational Capacity of Clip-Angle Connections under Seismic Loading

2014 ◽  
Vol 1025-1026 ◽  
pp. 979-986
Author(s):  
Jong Wan Hu ◽  
Hong Min Son
Keyword(s):  
Mathematical Models ◽  
Curve Fitting ◽  
Steel Frames ◽  
Seismic Loading ◽  
Full Scale ◽  
Analytical Models ◽  
Cyclic Loads ◽  
Structural System ◽  
Ductile Behavior ◽  
Partially Restrained

This paper explores rotational capacities and demands in thick top-and-seat (cleated) angle partially restrained connections subjected to monotonic and cyclic loads. The results of test on full-scale angle connections are described first, and are then compared to published curve-fitting models for these types of connections. The data indicates that the curve-fitting constants of some existing mathematical models cannot be extrapolated to thick angles. The results indicate that these connections are capable of providing very ductile behavior and constitute an ideal back-up structural system in steel frames.

scholarly journals A Pull-down Dynamic Analysis of Two-Span Steel Frames Subjected to Progressive Collapse

2018 ◽  
Author(s):  
Mohammadjavad Esfandiari ◽  
Girum Urgessa
Keyword(s):  
Dynamic Analysis ◽  
Linear Time ◽  
Progressive Collapse ◽  
Steel Frames ◽  
Time History ◽  
Experimental Results ◽  
Efficient Design ◽  
Structural Element ◽  
Disproportionate Collapse ◽  
Non Linear

Progressive collapse, also known as disproportionate collapse, describes a chain reaction of structural element failures in which a primary structural element failure results in the failure of adjoining structural elements. It eventually causes widespread structural damages and a disproportionate collapse. While high level finite-element models incorporating non-linear dynamic analysis will produce more realistic results in progressive collapse scenarios, they are computationally time consuming. Therefore, the development of a non-linear time history pull-down model that is validated with experimental results would be beneficial for producing acceptable and efficient design solutions, particularly for practicing structural engineers. In this paper, a non-linear time history pull-down model of a two-span steel frame is analyzed in ETABS. The ETABS model results are compared with experimental results of two steel frames with two-spans conducted by the National Institute of Standards and Technology (NIST). The NIST experiments include beam-column assemblies from the second-floor framing system of a ten-story building and each span is 20 feet long. The numerical results from ETABS pull-down analysis showed good agreement with the results from the NIST experimental study.

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