2.17.1 Non-uniform beams created of a profile in the Tekla Structures
One of the basic ways for creating a non-uniform beam is to create a standard
beam and respectively configure its profile. The non-uniform beams created
by this method can be used for transmitting to the calculating software.
Also, this method can be used if there is no need to separately take
account of the materials used.
Create a simple beam of 1000 mm in length.
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In the “Beam Properties” menu, go to the "Profile Catalogue"
and write into the search box: “*PHI”.
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This profile type is defined by I-beam height variance at its starting
and endpoints. It allows setting out the I-beam's height at its starting
point and the I-beam's height at its endpoint. In the below picture
you can see the table with editable profile parameters.
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Set the beam's profile at “PHI300-400-15-20*300”.
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The profile title reflects all the parameters which shape the beam and
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Go to the view plane by enabling the Ctrl+P hotkey combination.
Create a view by using two points at the side part of the beam.
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In the newly created view, go to the view plane by activating the Ctrl+P
hotkey combination.
Select the beam, and in the right-click menu, select the “Fit work
area to selected parts/ In selected views” tab.
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Depending on the beam's "Rotation" default settings, the
real segment which we indicate, when creating a beam, can be above or below
the beam's body.
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Go to the 'Beam properties" menu and configure the "Rotation"
parameter to the “Below”, to ensure coinciding of the building
up segment with the I-beams profile straight line. Thus changing
the beam’s profile will keep its top part unmoved.
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Select the beam and copy it horizontally by using the Ctrl+C hotkey combination.
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Select the new beam and adjust its profile in the way its cross-section
height at the juncture point to be equal with the respective of the initial
beam. Thus write in the profile type as “PHI250-300-15-20*300”,
and change its class to 9, to assure better visibility between the beams.
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Note that the beam's cross-section values are fixed at its starting
and endpoints, thus changing the beam’s length value does not affect
cross sections at all.
Click on the initial beam, select its right point, and by using the Ctrl+M
hotkey combination, move it to the left at 500mm.
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The beam has shortened, but the profile’s cross-section values remain
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Copy/Paste the initial beam to the left, and configure its profile to
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Advantages
Simplicity
There is no need of fitting the parts ends
Easily data transmission to the calculation software
Disadvantages
In practice, a beam is being created of the rolled materials, but creating
a beam by this method will not automatically get considered in the material
statements. It will be reflected in specifications as a simple profile
number.
In practice, the beam's juncture is not exactly vertical, thus upper
and bottom flange welds are being offset with reference to the beam wall.
Modeling a non-uniform beam by using this method does not allow distribution
of the upper and the bottom flange cutting bits with reference to the beam
wall.