2.3.9 The “Deforming” tool of the “Column Properties”
The "Deforming" tool is used for creating objects with complex
geometry. Below you can see the example of a complex structure composed
of warped and cambered columns.
Go to the “Deforming” section of the “Column Properties”
menu. Note that all default values of the parameters are set at 0.
Tekla Structures v21.1
Tekla Structures v2021
Let’s examine the subfields of the "Deforming" menu section.
The “Warping” field coils a column in a spiral. By default,
the warping value equals 0, but it can be set up to any value.
As we already know, each column is defined by a starting (marked in yellow)
The "Warping" field has two respective boxes for valuing these
points. To warp a column from its up point downwards is realized by specifying
the warp angle of the endpoint into the respective box, e.g. 30 degrees.
Check it out.
Tekla Structures v21.1
Tekla Structures v2021
To warp the column from its endpoint, by leaving the column top side static,
specify the 0 value at the endpoint field, and the value of 30 degrees
at the starting point field.
Consider that indicating a warping value over 360 degrees coils
the column in the numerous spins. In real practice, such examples are rarely
met, except for mechanical engineering.
Try out editing the warping angle for the end column point.
Tekla Structures v21.1
Tekla Structures v2021
Upon completion, restore all the “Warping” field values to
0.
Tekla Structures v21.1
Tekla Structures v2021
The “Cambering” tool twists (curves) a column.
It is composed of two coherent basic parameters which make a column’s
body cambered: the bending off parameter and the radius of the circumference
on which the column is to be situated.
If the value indicated into the field is less or equal to one-half of
the column’s length, then TS accepts this value as the bending off
parameter, otherwise it automatically considers the value as the circle
radius. The cambering direction is set up by indicating one of the
symbols “+/-”.
Cambering value =0
Cambering value <= ½
column length
Cambering value >= ½
column length
Let’s exercise cambering a column by introducing a cambering value
In the new Tekla Structures interface the cambering field is not functioning.
However, uploading models created using previous TS versions may
solve the issue and reflect cambered objects correctly, though modifying
the uploaded data still remains impossible.
We do suppose that these fields are necessary for assuring compatibility
with the older TS versions.
Tekla Structures v21.1
Tekla Structures v2021
Now, set up the cambering value exceeding one-half of the column length,
e.g. 10000 mm. TS will automatically define it as a part of the circumference
length with radius of 10 000 mm, resulting from intersection of the circumference
with the initial column-bisecant. Compare your results to the below:
Tekla Structures v21.1
Tekla Structures v2021
In the new Tekla Structures versions the “Cambering” field
is not functioning.
Restore the field values to their default settings. The “Shortening”
tool is the one seldomly used. It simultaneously brings up different values
of the same parameter into the statement and the drawing specification.
Tekla Structures v21.1
Tekla Structures v2021
In the new Tekla Structures versions the “Cambering” field
is not functioning.
This tool is mostly applicable when modeling reduced plates.
For example, a bearing plate is welded on to the formwork’s edge,
thus it has to be reduced for obtaining a plane surface. Bearing
surfaces must be critically plane (see marked with red in the above picture).
That is why an already manufactured and welded-on component is additionally
reduced, defining a decrease of the initial plate’s width value.
Exactly this fact brings up the issue of how to reflect the component
in the drawing. If we draft the part with no concern to reduction, the
geometry of the part intersects with the geometry of the structure.
If we reflect the part with its reduced thickness value, the statement
for manufacturing pre order indicates the dimensions of the part without
considering the allowance for reducing, thus the manufactured component
is too low.
Such wise the "Shortening" field specifies the thickness of
the bearing plate prior to reducing, indicating the value to be included
into the preorder report, and at the same time, it reflects the thickness
of the bearing plate to be reflected in the drawing.
Shortening (L1)
Component dimensions at the drawing (L2)
Component dimensions included in the preorder report (L3)
0
5500
5500
1000
5500
4500
-1000
5500
6500
Exercise introducing various values into the "Shortening" field,
e.g. 1000 and -1000. Note that the geometry of the model does not
change after executing shortening, but when selecting the object, the TS
displays different values of the dimensions of the objects at the drawing
and in the statement.
The allowance for reducing is defined by the range of 2-6 mm and
depends on various factors. Thus in the report it is reasonable to indicate
the thickness value considering the allowance for reducing, as the abatements
from the drawings can be fixed outright at the construction site.
Tekla Structures v21.1
Tekla Structures v2021
In the new Tekla Structures versions the “Cambering” field
is not functioning.
Upon completion restore the field values to their default settings.