topic -connections -typical joints for steel structures (from web)
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Typical Steel
Connections
Dr. Seshu Adluri
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Steel Connections -Dr. Seshu Adluri
Introduction
Steel ConnectionsMany configurations are used for force
transfer in connections. Theconfiguration depends upon the type ofconnecting elements, nature and
magnitude of the forces (and moments),available equipment, fabrication anderection considerations, cost, etc.
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Rivets
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Bolts
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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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Column splice
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Gusset plateconnections
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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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Framedconnections
Only shear transfer
Equivalent to pinned
end for the beam
No moment at the
beam end
Rotation is freely (?)
allowed
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Framedconnections
End reaction only
Web of the beam is
connected
No connection for
the flanges
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Transfer
of shear
force in
frames
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Beam-to-beam connections
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Beam-to-beam
connections
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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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Beam to column joints
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Beamto
columnjoints
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Beam-to-column connections
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Beam-to-column connections
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Beam-to-column
connections
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Beam to Column Rigid Joints
Bending moment from the
beamColumn
Beam
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Beam to Column Rigid Joints The bending
moment of thebeam is primarilytaken by the
flanges in the formof tension andcompressionforces
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Beam to Column
Rigid Joints
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Beam to ColumnRigid Joints
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Beam-to-column connections
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Beam to Column Rigid Joints Stiffener plates are
used to shore upthe column flangesagainst the forces
transmitted by thebeam flanges. Thestiffeners may be fulllength or may extend
only part of thecolumn web depth.
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Beam plate buckling
Beam web crippling
Beam flange local buckling
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Beam plate buckling
Beam web buckling (look closely)
Beam web local yielding
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Concentrated forces on webs
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Beam to Column Rigid Joints
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Beam to Column Semi-Rigid
Joints
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Beam to Column Rigid Joints Stiffener plates are
used to shore upthe column flangesagainst the forces
transmitted by thebeam flanges. Thestiffeners may be fulllength or may extend
only part of thecolumn web depth.
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Beam to Column Rigid Joints
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Beam to Column Rigid Joints The bending
moment of thebeam is primarily
taken by the
flanges in the formof tension and
compression forces
The bendingmoment of thecolumn is alsoresolved as a force
couple
Column
Beam
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Beam to Column Rigid Joints Stiffeners help in
distributing the forces inthe connection zone andin avoiding local rupture,
crushing or buckling ofthe beam web. Column
Beam
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Beam toColumn
RigidJoints
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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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Connections
in frames
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Bracing
Connections
in frames
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Column Bases
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Column Base Anchors
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Beam-to-wall connections
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Beam-to-wall connections
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References
Many pictures in this file are taken fromvarious sources such as CISC, AISC, etc.The copyrights for those materials are with
the original sources. No copyright isclaimed or implied by Dr. Seshu Adluri forthings that are already under copyright
protection. This file is for teachingpurposes.