RC Multicell Box Girder
RC Multicell Box Girder
(OP)
Good day mates,
I'm having hard time finding an example design of RC multicell box girder. I need to know how it is designed (whatever design Code does not matter).
I mean interior girders, exterior girders, top and bottom slab how they are designed for max moment and shear resistance?
Thanks ahead engineers
I'm having hard time finding an example design of RC multicell box girder. I need to know how it is designed (whatever design Code does not matter).
I mean interior girders, exterior girders, top and bottom slab how they are designed for max moment and shear resistance?
Thanks ahead engineers





RE: RC Multicell Box Girder
Specifically, how do you remove the internal form from the interior cells?
Mike Halloran
Pembroke Pines, FL, USA
RE: RC Multicell Box Girder
RE: RC Multicell Box Girder
Doug Jenkins
Interactive Design Services
http://newtonexcelbach.wordpress.com/
RE: RC Multicell Box Girder
Structural Health Monitoring/Bridge Engineering
Shoot for the Moon, even if U miss, U still land among Stars!
RE: RC Multicell Box Girder
Yes, that's the simplest way to analyse the member forces you will need to do the design.
Doug Jenkins
Interactive Design Services
http://newtonexcelbach.wordpress.com/
RE: RC Multicell Box Girder
Shoot for the Moon, even if U miss, U still land among Stars!
RE: RC Multicell Box Girder
If you do use a grillage, do check whether a modified-grillage might be more appropriate for this type of structure (such as that for steel-composite bridges or precast concrete tub/U girders with an insitu slab). It might be the case that the basic grillage analogy is inadequate for this type of torsionally stiff structure
IIRC Chen's Bridge Engineering handbook includes some guidance on this type of structure as well.
Good luck!
RE: RC Multicell Box Girder
thanks for your insight. As you mentioned, grillage analogy cannot fully model the behaviour of this type of bridge, since they're very stiff in lateral stability (torsion resistance). Grillage model of this bridge exists but the need is now for FEM which I have it already. The main point is I cannot figure out what design criteria (probably AASHO 1970) for this bridge was made. I was thinking to use longitudinal and transverse maximum demand moment and shear using H20-S16 truck loading and get the corresponding resistance capacity.
Shoot for the Moon, even if U miss, U still land among Stars!