SPATIAL CALCULATION FEM FOR SKEW T-BEAM BRIDGE WITH MULTI-RIBBED SLABS

This paper deals with the spatial calculation FEM of skew T-beam bridge with multi-ribbed slabs. Firstly, the bridge floor deck and the ribbed slab of T-beam bridge with multi-ribbed slabs are taken as a skew slab-beam and a general slab-beam, respectively. Then the shear lag and the local bending of the bridge floor deck are considered in constituting the displacement function, and the element rigidity matrix is assembled according to the deformation coordination of T-beam section displacement parameter. Finally, the spatial calculation FEM for skew T-beam bridge with multi-ribbed slabs is proposed.