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Numerical Simulation of Gusset Plate Connection with Rhs Shape Brace Under Cyclic Loading
In concentrically braced frames, gusset plate connections to rectangular hollow section braces are fabricated using welds both on the brace side and to connect the gusset plate to the flanges of the beam and column framing into the brace. The beam-to-column connection at the gusset plate is either welded or bolted. A welded beam-to-column connection could be considered as the best option for braced frame gusset plate connections, because the potentially considerable axial forces developed in the beam must be transferred through this joint. Even when a bolted connection is provided at the face of the column flange, a stiff gusset plate connected to the beam and the column could still provide a fully restrained beam-to-column connection as in the case of the welded connection. The past experimental studies have indicated that undesirable failure modes could occur in the gusset plate even using a linear clearance rule in the design of the gusset plate connection. For these reasons, this study investigates the local seismic performances of fully restrained gusset plate connections through detailed finite element models of a single storey single bay frame located at the ground floor of the four storey frame using the MIDAS FE program. The main goal of the study on the local performance of the gusset plate connection is to validate the design procedure presented in this chapter, proposing and alternative clearance rule for the accommodation of brace rotation. Finally, local performances of FE models are compared in terms of strain concentrations in gusset plates, beams and columns.
Numerical Simulation of Gusset Plate Connection with Rhs Shape Brace Under Cyclic Loading
In concentrically braced frames, gusset plate connections to rectangular hollow section braces are fabricated using welds both on the brace side and to connect the gusset plate to the flanges of the beam and column framing into the brace. The beam-to-column connection at the gusset plate is either welded or bolted. A welded beam-to-column connection could be considered as the best option for braced frame gusset plate connections, because the potentially considerable axial forces developed in the beam must be transferred through this joint. Even when a bolted connection is provided at the face of the column flange, a stiff gusset plate connected to the beam and the column could still provide a fully restrained beam-to-column connection as in the case of the welded connection. The past experimental studies have indicated that undesirable failure modes could occur in the gusset plate even using a linear clearance rule in the design of the gusset plate connection. For these reasons, this study investigates the local seismic performances of fully restrained gusset plate connections through detailed finite element models of a single storey single bay frame located at the ground floor of the four storey frame using the MIDAS FE program. The main goal of the study on the local performance of the gusset plate connection is to validate the design procedure presented in this chapter, proposing and alternative clearance rule for the accommodation of brace rotation. Finally, local performances of FE models are compared in terms of strain concentrations in gusset plates, beams and columns.
Numerical Simulation of Gusset Plate Connection with Rhs Shape Brace Under Cyclic Loading
Computational Methods
Papadrakakis, Manolis (editor) / Fragiadakis, Michalis (editor) / Lagaros, Nikos D. (editor) / Wijesundara, K. K. (author) / Bolognini, D. (author) / Nascimbene, R. (author)
2010-11-16
23 pages
Article/Chapter (Book)
Electronic Resource
English
Concentrically braced frames , Rectangular hollow section , Special concentrically braced frames , Finite element models , Yield mechanism , Equivalent plastic strain , Local buckling Engineering , Vibration, Dynamical Systems, Control , Computational Intelligence , Geotechnical Engineering & Applied Earth Sciences , Computational Science and Engineering
Numerical Simulation of Gusset Plate Connection with Rhs Shape Brace Under Cyclic Loading
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