scholarly journals A simplified model for seismic response prediction of concentrically braced frames

2010 ◽  
Vol 41 (3) ◽  
pp. 497-505 ◽  
Author(s):  
Iman Hajirasouliha ◽  
Alireza Doostan
Keyword(s):  
Seismic Response ◽  
Response Prediction ◽  
Simplified Model ◽  
Braced Frames ◽  
Concentrically Braced Frames ◽  
Concentrically Braced

scholarly journals The Effect of Local Fuse on Behavior of Concentrically Braced Frame by a Numerical Study

2018 ◽  
Vol 4 (3) ◽  
pp. 655 ◽  
Author(s):  
Ali Kachooee ◽  
Mohammad Ali Kafi ◽  
Mohsen Gerami
Keyword(s):  
Seismic Response ◽  
Numerical Study ◽  
Numerical Models ◽  
Compressive Loading ◽  
Braced Frames ◽  
Concentrically Braced Frames ◽  
Reduced Cross Section ◽  
Braced Frame ◽  
Concentrically Braced Frame ◽  
Concentrically Braced

The concentrically braced frames (CBFs) are one of the most widely used lateral load-resisting systems. Seismic performance of these structures has a weakness that is due to the brace buckling at a lower loading than the ultimate compressive loading capacity. In this paper, attempt is made to enhance the seismic response of CBFs through utilizing a local fuse. For this purpose, first the formulation of fuse area and length are presented. Then based on this formulation, several numerical models have been built and analyzed to examine the effect of implementing this fuse on seismic response of CBFs. From the analyses results, it is found that if the reduced cross-section fuse (RCF) is properly designed and also the end of brace is fixed, the CBFs with equal energy dissipation capacity, that are equipped with this fuse exhibit a better ductility than the customary CBFs.

Investigation of the seismic response of three-story special concentrically braced frames

2012 ◽  
Vol 77 ◽  
pp. 131-144 ◽  
Author(s):  
Eric J. Lumpkin ◽  
Po-Chien Hsiao ◽  
Charles W. Roeder ◽  
Dawn E. Lehman ◽  
Ching-Yi Tsai ◽  
...  
Keyword(s):  
Seismic Response ◽  
Braced Frames ◽  
Concentrically Braced Frames ◽  
Concentrically Braced

scholarly journals Seismic Response and Design of Steel Multi-Tiered Concentrically Braced Frames of the Conventional Construction Category in Moderate Seismic Regions of Eastern Canada

2021 ◽  
Author(s):  
Eshagh Derakhshan Houreh ◽  
Ali Imanpour
Keyword(s):  
Seismic Response ◽  
Seismic Design ◽  
Design Method ◽  
Braced Frames ◽  
Concentrically Braced Frames ◽  
Eastern Canada ◽  
Concentrically Braced ◽  
Seismic Regions ◽  
Moderate Seismic Regions ◽  
Seismic Design Method

This paper examines the seismic behaviour of steel Multi-Tiered Concentrically Braced Frames (MT-CBFs) of the Conventional Construction category (Type CC) in moderate seismic regions of eastern Canada and proposes a new seismic design method for such structures. A total of 32 prototype MT-CBFs part of a single-storey building are selected and designed in accordance with the 2019 Canadian steel design standard (CSA S16-19) provisions for Type CC structures, excluding the design requirements prescribed for frames taller than 15m, namely the amplification of seismic forces varying by the frame height and the amplification of the column factored seismic force. Nonlinear response history analyses are then performed to examine their seismic response. The results confirmed that tiers experience limited lateral deformation, intermediate horizontal struts are required between tiers, and columns are subjected to combined axial force and bi-axial bending, which in some cases led to column buckling. The results are used to propose a new seismic design method in the framework of CSA S16.

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