Abstract
The parametric study using FEM has been performed to investigate the factors thought to influence on the shear mechanism of PC slender beams. With the main investigation on the effects of prestressing force with its type of stress distribution, the failure mechanism can be clarified. The simplified truss model has been developed with a small number of degrees of freedom for assessing the shear carrying capacity of PC slender beams based on the equivalent linear analysis. By utilizing the extrapolated inclination of critical stress flow and the thickness of diagonal compression members estimated from the FEM results, the well-predicted results on the shear behavior of PC slender beams without transverse reinforcement can be obtained.
