Influence of gusset plate connections and braces on the seismic performance of X-braced frames

2011 ◽  
Vol 40 (4) ◽  
pp. 355-374 ◽  
Author(s):  
Charles W. Roeder ◽  
Dawn E. Lehman ◽  
Kelly Clark ◽  
Jacob Powell ◽  
Jung-Han Yoo ◽  
...  
Keyword(s):  
Seismic Performance ◽  
Braced Frames ◽  
Gusset Plate ◽  
Plate Connections

Improved Seismic Performance of Gusset Plate Connections

2008 ◽  
Vol 134 (6) ◽  
pp. 890-901 ◽  
Author(s):  
Dawn E. Lehman ◽  
Charles w. Roeder ◽  
David Herman ◽  
Shawn Johnson ◽  
Brandon Kotulka
Keyword(s):  
Seismic Performance ◽  
Gusset Plate ◽  
Plate Connections

Cyclic Performance of Braces with Different Support Connections in Special Concentrically Braced Frames

2018 ◽  
Vol 763 ◽  
pp. 694-701 ◽  
Author(s):  
Pratik Patra ◽  
P.C. Ashwin Kumar ◽  
Dipti Ranjan Sahoo
Keyword(s):  
Cyclic Behavior ◽  
Cyclic Performance ◽  
Braced Frames ◽  
Concentrically Braced Frames ◽  
Gusset Plates ◽  
Gusset Plate ◽  
Concentrically Braced Frame ◽  
Concentrically Braced ◽  
Out Of Plane ◽  
Plate Connections

Gusset plate connections between the steel braces and the supporting frame members play an important role in the performance of special concentrically braced frames (SCBFs) under earthquake loading conditions. Extensive studies have been conducted on SCBFs in which the gusset plate connections are designed to ensure the out-of-plane buckling of steel braces. However, research on the cyclic behavior of gusset plate connections allowing the in-plane buckling of braces is very limited. An experimental investigation has been carried out in this study to investigate the cyclic performance of the in-plane buckling of gusset-brace assemblies. Tests showed that the gusset plate connections detailed for in-plane buckling of braces provided performance at par with those detailed for the out-of-plane deformation arrangement. A numerical comparative study on three types of connection arrangements has also been conducted, namely, a) out-of-plane buckling of braces using gusset plates, b) in-plane buckling of braces using knife plates, and c) direct connection of braces without using any gusset plates. Braces made of hollow steel sections having constant slenderness ratio and width-to-thickness ratio are used in all the numerical models. The main parameters compared are the energy dissipation capacity, displacement ductility, patterns of failure, and the sequence of yielding in the components. Both test and analysis results are used to quantify the performances of gusset plate connections in order to achieve an efficient and reliable concentrically braced frame systems.

Frame and Brace Action Forces on Steel Corner Gusset Plate Connections in Buckling-Restrained Braced Frames

2012 ◽  
Vol 28 (2) ◽  
pp. 531-551 ◽  
Author(s):  
Chung-Che Chou ◽  
Jia-Hau Liu
Keyword(s):  
Axial Strain ◽  
Free Edge ◽  
Braced Frames ◽  
Element Analysis ◽  
Gusset Plate ◽  
Braced Frame ◽  
Test Frame ◽  
Force Components ◽  
Buckling Restrained Braced Frames ◽  
Plate Connections

This work presents test and finite element analysis results for a steel buckling-restrained braced frame (BRBF). The objectives are to evaluate the forces of frame and brace actions on the corner gusset plate and to develop a method that considers both actions in design. The BRBF test frame exhibited excellent performance up to a drift of 2% with a maximum axial strain of 1.7% in the buckling-restrained brace. Without free-edge stiffeners, the corner gusset plate buckled at a significantly lower strength than that predicted by the American Institute of Steel Construction (AISC) specifications ( AISC 2005a ). By idealizing the corner gusset plate as a strut, a strut model can be used to determine the forces resulting from frame action, which are on the same order as the brace forces. Considering the stress distributions and force components from the frame and brace actions, the maximum stresses in the gusset tips are used as an additional design parameter for sizing gusset connections.

Seismic Design of Gusset Plate Connections in Concentrically Braced Frames

2018 ◽  
Vol 763 ◽  
pp. 141-148
Author(s):  
Yao Cui ◽  
Wei Zhang ◽  
Jia Chen Zhang ◽  
Qi Tang
Keyword(s):  
Seismic Design ◽  
Axial Load ◽  
Finite Element Models ◽  
Braced Frames ◽  
Concentrically Braced Frames ◽  
Gusset Plates ◽  
Gusset Plate ◽  
Braced Frame ◽  
Concentrically Braced ◽  
Plate Connections

In concentrically braced frames (CBF), gusset plates as the connected members are subjected to forces not only from brace but also from frame action. When the braced frame is deformed, the beam-column connection will deform, and the deformation of beam-column connection either “open” or “close” as the brace under “compression” or “tension”. Therefore, the design of gusset plate should consider the effect of such frame action, in addition of the brace axial load. Six finite element models were developed using ABAQUS to investigate the force distribution of gusset plate under the two actions. It is noted that force in gusset plate can be divided into two parts and frame action is so small that can be neglected during brace buckling.

Analysis on the Seismic Behavior of Extended End-Plate Connections of Steel Frame Structure

2012 ◽  
Vol 193-194 ◽  
pp. 1405-1413 ◽  
Author(s):  
Zhu Ling Yan ◽  
Bao Long Cui ◽  
Ke Zhang
Keyword(s):  
Finite Element ◽  
Cyclic Loading ◽  
Seismic Performance ◽  
Seismic Behavior ◽  
Frame Structure ◽  
End Plate ◽  
Rigid Connection ◽  
Extended End Plate ◽  
Plate Connections ◽  
Steel Frame Structure

This paper conducts analysis on beam-column extended end-plate semi-rigid connection joint concerning monotonic loading and cyclic loading of finite element through ANSYS program, mainly discussed the influence of parameters such as the form of end plate stiffening rib on anti-seismic performance of joint.

Experimental Study on Seismic Performance of Ridge Joint of Double C Steel under Cyclic Loading

2011 ◽  
Vol 243-249 ◽  
pp. 1435-1438 ◽  
Author(s):  
Ming Chen ◽  
Yang Sun ◽  
Bing Qian Pi
Keyword(s):  
Experimental Study ◽  
Cyclic Loading ◽  
Seismic Performance ◽  
Engineering Application ◽  
Steel Structure ◽  
Energy Performance ◽  
Gusset Plate ◽  
Cold Formed Steel ◽  
Bolt Spacing ◽  
Steel Section

The double C steel section is made of two C steels with gusset plate through bolts. A ridge joint of double C steel is studied through experiment under cyclic loading in this paper. Through the four specimens with different gusset-plate’s thickness and bolt spacing, we analyze the effect of the gusset-plate’s thickness and bolt spacing on stiffness, ductility and energy performance. At last we recommend the suitable gusset-plate’s thickness. The results can give a reference to the engineering application of cold-formed steel structure.

Sign in / Sign up

Export Citation Format

Share Document