scholarly journals The effect of gusset plate in moment-rotation behavior of double-web angle connection, in braced frames

2017 ◽  
Vol 0 (0) ◽  
pp. 0-0
Author(s):  
Massood Mofid ◽  
Amir Reza Tabkhi Wayghan
Keyword(s):  
Braced Frames ◽  
Gusset Plate ◽  
Angle Connection

Experimental cyclic loading of concentric HSS braces

2011 ◽  
Vol 38 (1) ◽  
pp. 110-123 ◽  
Author(s):  
Madhar Haddad ◽  
Tom Brown ◽  
Nigel Shrive
Keyword(s):  
Energy Dissipation ◽  
Material Properties ◽  
Slenderness Ratio ◽  
Plate Thickness ◽  
Earthquake Ground Motion ◽  
Braced Frames ◽  
Gusset Plate ◽  
Plate Size ◽  
Tension And Compression ◽  
Hysteresis Behaviour

During earthquake ground motion, diagonal braces in braced frames are subject to a series of cyclic loadings, alternately tension and compression. The brace can buckle and deform plastically, dissipating energy with damage accumulating in the steel. Eventually a crack may form and the brace fractures. To optimize energy dissipation, the effects of brace and gusset plate dimensions (thickness and length of the gusset plate, size of the brace, length of the brace), and material properties, on brace behaviour, need to be understood. Ten concentric bracing members, designed according to the weak brace – strong gusset concept, were tested. The objective was to investigate the effects of displacement history, brace effective slenderness ratio, and brace width/thickness ratio, on the hysteresis behaviour of bracing members. Displacement history was found to affect energy dissipation and fracture life. The effects of increasing the gusset plate thickness on the energy dissipation and the fracture life is not the same as reducing the effective slenderness ratio of the bracing member resulted from reducing the length of the HSS. New fracture life and energy life equations are proposed.

Shake table assessment of gusset plate connection behaviour in concentrically braced frames

2017 ◽  
Vol 138 ◽  
pp. 432-448 ◽  
Author(s):  
Suhaib Salawdeh ◽  
Jack English ◽  
Jamie Goggins ◽  
Ahmed Y. Elghazouli ◽  
Alan Hunt ◽  
...  
Keyword(s):  
Shake Table ◽  
Braced Frames ◽  
Concentrically Braced Frames ◽  
Gusset Plate ◽  
Concentrically Braced ◽  
Plate Connection

scholarly journals Research on Mechanical Properties of Angle Beam-column Joint with Gusset plate

2021 ◽  
Vol 233 ◽  
pp. 03031
Author(s):  
Yunan Li ◽  
Xian Dong ◽  
Zhan Wang ◽  
Jiajun Li ◽  
Ke Qin
Keyword(s):  
Mechanical Properties ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Failure Modes ◽  
Flexural Behavior ◽  
Element Analysis ◽  
Gusset Plate ◽  
Static Test ◽  
Column Joint ◽  
Angle Connection

There is wide use of beam-column joint with gusset plate angle connection in engineering, however, the mechanical properties of these joints are still lack of complete theoretical and experimental research. This kind of joint is often simplified as an articulated connection or other types of connections in the design. In this paper, experimental study and finite element analysis are carried out to study the flexural behavior of the beam-column joint with gusset plate angle connection. The finite element analysis is used to analyze the differences between the beam-column joint with gusset plate and other joints. The moments-rotation curves and failure modes of the three kinds of beam-column joints were obtained by the static test which were carried out. A more reasonable design of beam-column joint with angle plate of gusset plate is put forward through the research of this paper: the deformation of the column flange is restricted after adding the stiffener, which can avoid the premature yield of the column flange and making the joint have good energy dissipation capacity.

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.

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
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