Pitched cambered beam

[Anonymous]

Hello,

I am analyzing two types of glued laminated beam: double-tapered and pitched cambered. Both are mentioned in EC 5 as typical ones. They appear in Robot options as well (screenshot). Unfortunately i have no idea how to model pitched cambered one. All i know is that curved beams shall be made out of straight members (discretization). Has anybody dealt with these beams and actually can help me?

As a side thing i can add that some sources claim that pitched cambered beam can be created as a shell or can be imported from other software but i cannot handle it.

Grzegorz

[Artur.Kosakowski]

Hi Grzegorz,

This additional definition is primarily intended for situations where you model such beam as a bar with constant height. On the other hand you can model such beam as a chain of elements with variable heights and then create a super bar from them for code checking.

If you find your post answered press the Accept as Solution button please. This will help other users to find solutions much faster. Thank you.

[Anonymous]

Thank you for your answer

I have just created a random arch using elements with variable heights and I am trying to transform it somehow into my pitched cambered beam (screenshot). I don't know how am I supposed to model "flat" top and curved bottom in the apex area of the beam. I'd like to visualize this shape in Robot, is it possible?

[Artur.Kosakowski · Accepted solution]

Hi,

Mind that bars in RSA are actually lines with section properties assigned (which are limited to linear change of section height) therefore for such beam shape it is an approximation rather than than exact shape. It is exactly the reason why this 'additional' shape definition is available in the Timber design module.

If you find your post answered press the Accept as Solution button please. This will help other users to find solutions much faster. Thank you.