Based on experimental results of four reinforced concrete box beams strengthened with fiber reinforced polymer (FRP), a 3-D finite element model was established and the nonlinear finite element method was used to study the torsional behaviors of FRP strengthened reinforced concrete box beams under combined loadings of bending moment, shear and torque.

In this paper,theoretical analyses on the torsional behavior of CFS strengthened reinforced concrete(RC) box beams subjected to combined action of bending-shear-torsion are performed.

Experiments on the torsional behavior of carbon fiber sheet (CFS) strengthened reinforced concrete(RC) box beams subjected to combined action of bending-shear-torsion are performed.

Complete history analysis on torsional performance of composite steel-concrete beams;