Self-compacting Concrete Beam Bending, Shear Properties Of Torsional Force

In order to study structural properties of the self-compacting concrete (SCC) beams under combined bending, shear and torsion, this thesis carries out theoretic analysis and experimental study and the main work is listed below:(1) by carrying out the experiments of six beams under combined bending, shear and torsion, the working performances and the ultimate load-carrying capacity of SCC are discussed, the damage forms and the failure pattern are analyzed, the comparisom between SCC beam and normal concrete beam which had the same cross section, arraging steel forms and similar concrete strength under combied bending, shear and torsion has been made, and the influences of the reinforcing ratio and stirrup ratio has been compared too.(2) The test beams under combined loading are simulated by ANSYS. The stess and dispalcement of the beams under combined loading are analyzed, and the ANSYS calculated results were compared with the test ones.(3) With the adoption of the variable angle space truss theory, combined loading can be dissolved into three models: bending model, shear model and torsion model. The load-carrying capacity of each model is analyzed, which form the basis of analyzing the relativity of bending, shear and torsion.(4) The relativity of bending, shear and torsion are analyzed. According to the experimental results the relevant equations of bending and shear, bending and torsion, shear and torsion and bending, shear and torsion are verified.