2.17.3 Welded non-uniform cross-section beams in Tekla Structures
The algorithm for modeling a welded non-uniform cross-section beam in
TS differs from the respective for welded uniform cross-section beam by
not taking into account the reference line of the profile.
The reason is that non-uniform beams are of seldom use and their slope
angle in the majority of cases coincides with the respective angle of the
roofing and walls. That is why there is no need to rotate (slope)
them, but it will be more convenient to modify them with the above reference
line position.
Copy the beam from the previous exercise downwards at 1300 mm.
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Select the beam wall and set out its “At depth” value according
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Move the beam's wall downwards in the way its flange gets laid at
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Proceed to set to null the bottom beam's flange offset value. Thus
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Move the bottom flange to the required position without recurring to setting
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Thus we have created a uniform cross-section beam with different reference
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Maximize the height value of the beam's wall at 200 mm by changing
its profile to “—20*500”. Modify the beam's
wall class value to 13 for a better visual distinction.
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Click on the bottom flange and select its left point. Move the point as
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Execute the polygon cut. Prior to this, make sure that the Z-axis is perpendicular
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Execute the “Polygon cut” in the way the resulting added material
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Copy/Paste the beam to the left by using the Ctrl+C hotkey combination.
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Modify the profile of the copied beam's wall to “—30*900”.
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Move the bottom flange points as it is shown below:
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Note that the added material object does not work anymore, as its initial
Go to the added material properties window and configure its thickness
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Delete the added material plate and create a new one.
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To avoid allocating in a line the welded seams of the beam flanges and
Select the beam wall.
Select its right point.
Move the point along the beam wall at 200 mm to the right.
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Modify the width parameter of the right beam flange at “—20*250”,
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Create a polygon cut, where 3 points are located at the outer face bottom
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Thus we have created a non uniform cross section beam, defined by various
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Weld on the parts by yourself by using an arbitrary welding chord size.