I am trying to design steel twin tub girder bridge while taking into account the non linear behavior of the materials. I was advised to use RM bridge. I would like to know if RM bridge supports Steel Tub girders?
Thanks in advance,
Hi Pegdwende Kafando,
RM Bridge has been used to design steel tub girders taking into account the non linear behavior of the materials. Just don't expect to perform automatically all code checks.
On the other hand, in LBS: LEAP Bridge Steel you can find most of the input and check tools with a very complete verification already implemented
Senior Technical Support Engineer, Bridge
MSc., Structural Analysis Specialist, Civil Engineer, RM Bridge Enterprise
Bentley Systems Inc.
I am planning to build a code check manually. I started to model a twin tub and I ran into an error ( segment point 6: Topological problem(s) found).
Is there a way to overcome this.
The issue here is the discontinuity between the nodes of the FEM elements in the deck external webs. The nodal points should be at the exact same location. See the image below from Manual for your reference:
Moreover, I would not include the Barrier as part of the Cross Section and just as loading as they're not usually a longitudinal continuous element.
I run into an error message for " negative pivot". I tried all the advises on Bentley community but it still the same problem. Straight Bridge.zip
You also need to activate your support elements at Schedule\Stages\Activation. Check the difference at the screenshot below from All and Active only elements
To model a grid you have to use different Part numbers for left and right girders, slabs and composite parts and this could be independent, as at File\Examples\Training examples\03d Composite Grillage or in a combined Cross Section, as in the example below from the Cross Section Catalogue.