topic -connections -typical joints
DESCRIPTION
connectionsTRANSCRIPT
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Typical SteelConnections
Dr. Seshu Adluri
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Steel Connections -Dr. Seshu Adluri
Introduction
Steel ConnectionsMany configurations are used for force
transfer in connections. The configuration depends upon the type of connecting elements, nature and magnitude of the forces (and moments), available equipment, fabrication and erection considerations,
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Steel Connections -Dr. Seshu Adluri
cost, etc.
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Rivets
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Steel Connections -Dr. Seshu Adluri
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Steel Connections -Dr. Seshu
Bolts
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Steel Connections -Dr. Seshu
Connections
Many types based on function Beam-to-Beam Connections Beam-to-Column Connections Column-to-Column Connections Column Base Plates Pocket Beam Gusset plate connections (truss type, frame type,
bracings, …) Splices (cover plates, …)
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Cover plates
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Cover plates
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Steel Connections -Dr. Seshu Adluri
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Column splice
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Steel Connections -Dr. Seshu Adluri
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Steel Connections -Dr. Seshu
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Gusset plateconnections
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Steel Connections -Dr. Seshu
Gusset plateconnections
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Gusset plateconnections
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Force dispersion to gusset plates
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Steel Framing Connections
Framed Connections Bolts only in web, not the flanges Transmits only shear Not bending moment Accomplished with
clip angles & bolts/welds
Moment Connections Transmit shear & moment Flanges must be connected Bolt/Weld Flanges May require column stiffeners
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Steel Connections -Dr. Seshu Adluri
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Steel Connections -Dr. Seshu
Framed connections
Only shear transfer Equivalent to pinned
end for the beam
No moment at the beam end
Rotation is freely (?) allowed
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Steel Connections -Dr. Seshu
Framed connections
End reaction only Web of the beam is
connected
No connection for the flanges
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Transferof shear force in frames
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Beam-to-beam connections
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Beam-to-beamconnections
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Steel Connections -Dr. Seshu
Beam-to-column connections
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Beam-to- column connections
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Beam tocolumn joints
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Beam tocolumn joints
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Steel Connections -Dr. Seshu Adluri
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Beam to column joints
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Steel Connections -Dr. Seshu Adluri
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S
Beam to column joints
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teel Connections -Dr. Seshu Adluri
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Beam-to-column connections
Steel Connections -Dr. Seshu Adluri
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Beam-to-column connections
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Steel Connections -Dr. Seshu Adluri
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Beam-to-column connections
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Beam to Column Rigid Joints
Beam
ColumnBending moment from the beam
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Steel Connections -Dr. Seshu Adluri
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Beam to Column Rigid Joints
The bending moment of the beam is primarily taken by the flanges in the form of tension and compression forces
Steel Connections -Dr. Seshu Adluri
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Steel Connections -Dr. Seshu
Beam to ColumnRigid Joints
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Beam to ColumnRigid Joints
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Steel Connections -Dr. Seshu Adluri
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Beam-to-column connections
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Steel Connections -Dr. Seshu Adluri
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Beam to Column Rigid Joints
Stiffener plates are used to ‘shore up’ the column flanges against the forces transmitted by the beam flanges. The stiffeners may be full length or may extend only part of the column web depth.
Steel Connections -Dr. Seshu Adluri
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Beam plate buckling
Beam flange local buckling
Beam web crippling
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Steel Connections -Dr. Seshu Adluri
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klingBeam plate buc
Beam web local yielding
Beam web buckling (look closely)
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Steel Connections -Dr. Seshu Adluri
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Concentrated forces on webs
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Steel Connections -Dr. Seshu Adluri
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Beam to Column Rigid Joints
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Beam to Column Semi-Rigid Joints
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Steel Connections -Dr. Seshu Adluri
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Steel Connections -Dr. Seshu
Beam to Column Rigid Joints
Stiffener plates are used to ‘shore up’ the column flanges against the forces transmitted by the beam flanges. The stiffeners may be full length or may extend only part of the column web depth.
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Beam to Column Rigid Joints
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Beam
Beam to Column Rigid Joints
The bending moment of the beam is primarily taken by the flanges in the form of tension and compression forces
The bending moment of the column is also resolved as a force couple
Column
Steel Connections -Dr. Seshu Adluri
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Beam
Steel Connections -Dr. Seshu Adluri
Beam to Column Rigid Joints
Stiffeners help in distributing the forces in the connection zone and in avoiding local rupture, crushing or buckling ofthe beam web. Column
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Beam to Column Rigid Joints
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Beam Splices
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Beam Splices
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ColumnSplices
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ColumnSplices
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Connections forBents (Eves)
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Connections forBents (Eves)
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Connectionsin frames
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Bracing Connections in frames
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Column Bases
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Steel Connections -Dr. Seshu Adluri
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Column Base Anchors
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Steel Connections -Dr. Seshu Adluri
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Steel Connection
Beam-to-wall connections
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s -Dr. Seshu Adluri
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Steel Connections -Dr. Seshu
Beam-to-wall connections
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Steel Connections -Dr. Seshu
References
Many pictures in this file are taken from various sources such as CISC, AISC, etc. The copyrights for those materials are with the original sources. No copyright is claimed or implied by Dr. Seshu Adluri for things that are already under copyright protection. This file is for teaching purposes.