Tuesday, September 30, 2008

Line of moment

After the presentation I talked with the tutors and they send me information about beams on more than two support points. In this I now try to make the lines of moment in GC. In this I have some trouble because I want to get the sum of the y factor of two lines. So I just want to make one sumed line out of 2 lines.This picture shows 2 lines of moment. The basic line is the horizontal one. My question is: How can I calculate the summed line of moment.
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1 comment:

Andre - AC said...

With reference to the discussion after your presentation, the aim in terms of modeling structural behavior is not to sum moments from adjacent spans but to use the equations for continuous spans rather than individual, simply supported ones (still assuming for the time being that the beam section is constant.) Another direction, also discussed there briefly, is to account for varying crossection not only as it affects load distribution and torsion, but also in the resistance to those loads, which would allow using more of the bridge material as active structure, rather than just building a spine and cladding it.

These two directions can also be combined, but in any case there is still not much feedback to the overall design – aside from the crossection depth being driven by the beam depth – since there are no limitations set. Therefore, rather than trying to further refine the behavior of structural modeling, it would be good at this stage for you to pose some research question(s) which you can address through the model you’ve built, and then decide whether more detailed behavior modeling is needed to get the answers.

AC

October 6, 2008 at 2:06 AM

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