grillage analysis of a composite beam of a bridge
grillage analysis of a composite beam of a bridge
(OP)
Hey guys,
I would like to ask you how to model a concrete slab on two steel girders for a bridge in FEM software uaing grillage method ( i have GSA Oasys as software)? How to determine the section properties ( E, I, G and J) of the longitudinal elements representing the slabs and the steel girders? I think we need to calculate all section properties in ‘steel units’, using a transformed area for the concrete flange (divide by the modular ratio n) but i do not know how to calculate them. Can anyone help me please?
Daryl
I would like to ask you how to model a concrete slab on two steel girders for a bridge in FEM software uaing grillage method ( i have GSA Oasys as software)? How to determine the section properties ( E, I, G and J) of the longitudinal elements representing the slabs and the steel girders? I think we need to calculate all section properties in ‘steel units’, using a transformed area for the concrete flange (divide by the modular ratio n) but i do not know how to calculate them. Can anyone help me please?
Daryl






RE: grillage analysis of a composite beam of a bridge
RE: grillage analysis of a composite beam of a bridge
I have found something on the grillage analysis http://www.steelconstruction.info/Modelling_and_an.... i need to define the modulus of elasticity and shear modulus of the longitudinal elements in FEM, so i need to find a way to calculate these properties for the composite action. While the transverse elements will only have the concrete properties.