Experimental and Analytical Investigation of D-Type Self-Centering Steel Eccentrically Braced Frames with Replaceable Hysteretic Damping Devices

2019 ◽  
Vol 145 (1) ◽  
pp. 04018229 ◽  
Author(s):  
Lewei Tong ◽  
Yunfeng Zhang ◽  
Xin Zhou ◽  
Arshia Keivan ◽  
Ruipeng Li
Keyword(s):  
Analytical Investigation ◽  
Braced Frames ◽  
Eccentrically Braced Frames ◽  
Hysteretic Damping

Analytical study on cyclic behavior of chevron braced frames with shear panel system considering post-yield deformation

2013 ◽  
Vol 40 (7) ◽  
pp. 633-643 ◽  
Author(s):  
S.M. Zahrai ◽  
A. Moslehi Tabar
Keyword(s):  
Damping Ratio ◽  
Analytical Investigation ◽  
Cyclic Behavior ◽  
Braced Frames ◽  
Braced Frame ◽  
Proposed Model ◽  
Hysteretic Damping ◽  
Key Issues ◽  
Energy Dissipation Capacity ◽  
Shear Panel

An analytical investigation is performed on chevron braced frames using the shear panel system (SPS) and verified based on experimental results. This paper aims to determine key issues influencing the cyclic behavior and energy dissipation capacity of this kind of ductile braced frame. An extended analytical model is presented to evaluate the lateral stiffness of the SPSs at different levels of nonlinear deformation. The expressions developed in this model may be used to select the geometric properties of the SPS based on the desired ductility. Finally, the results obtained from testing on five full-scale braced specimens are used to verify the validity of the proposed model. The experimental specimens showed approximately 30% hysteretic damping ratio and their SPSs reached a plastic rotation of about 0.15 rad.

Mid-spliced end-plated replaceable links for eccentrically braced frames

2021 ◽  
Vol 237 ◽  
pp. 112225
Author(s):  
Yasin Onuralp Özkılıç ◽  
Mehmet Bakır Bozkurt ◽  
Cem Topkaya
Keyword(s):  
Braced Frames ◽  
Eccentrically Braced Frames

Seismic Response of Eccentrically Braced Frames

1980 ◽  
Vol 106 (4) ◽  
pp. 843-860
Author(s):  
Ashok K. Jain ◽  
Subhash C. Goel
Keyword(s):  
Seismic Response ◽  
Braced Frames ◽  
Eccentrically Braced Frames

scholarly journals Plastic hinge location in columns of steel frames subjected to seismic actions

2008 ◽  
Vol 41 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Brian H. H. Peng ◽  
Gregory A. MacRae ◽  
Warren R. Walpole ◽  
Peter Moss ◽  
Rajesh Dhakal ◽  
...  
Keyword(s):  
Axial Force ◽  
Plastic Hinge ◽  
Time History ◽  
Steel Structure ◽  
Braced Frames ◽  
Moment Frames ◽  
Eccentrically Braced Frames ◽  
Moment Connection ◽  
History Analysis ◽  
Active Link

Several steel structure standards around the world contain an equation to encourage any column flexural yielding during earthquake shaking to occur at the column ends, rather than along the column length. The accuracy of these equations and their applicability to columns of both moment frames and braced frames are examined in this paper. It is shown, using an analytical procedure developed from first principles considering the reduction in member stiffness from axial force due to geometric and material nonlinearity, that the existing code equations are conservative. Less conservative empirical equations are developed based on the analysis results. It is found that these equations are applicable to frames with a braced connection, rather than a moment connection into the column. Time-history analysis of eccentrically-braced frames with inverted V-bracing, where the active link occurs at the centre of the beam, is carried out. The likely column end moment ratio needed for the new equations is determined. The analysis also shows that yielding often did not occur in the bottom story columns during earthquake excitations. A simple check is proposed to relate the axial force limit and the design drift to flexural yielding of columns which can be used in conjunction with the proposed equations.

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