Abstract
In this paper, the numerical experiments and the comparisons of the analytical predictions with experimental results on the mechanical properties of RC members subjected to various loads are carried out by using a new inelastic analytical procedure of reinforced concrete based on endochronic theory. The results of the present study are summarized as follows : 1) The analytical predictions are in good agreement with experimental results over a wide range, by using 0.3 as the value of shear transfer factor related to the interlock effect of aggregate due to shear slip across tensile cracks. 2) The bending stiffness of RC member decreases with the decreasing value of crack spacing factor (CF). This effect is significant for the RC member with larger shear-span ratio and lower axial force. 3) The applicability of ordinary finite segment method is extended by using the crack spacing factor proposed in this study. 4) The multiaxial stress-strain relations predicted with the endochronic theory proposed by Z. P. Bazant et al. are applicable to the predictions of the response of RC member as far as the present analyses are concerned. 5) Proposed analytical procedure considering the effects of the lateral normal stresses in concrete due to the confinement by stirrups or hoops and of the decreasing stiffness of RC member on the deteriorated bond-slip relationship is very effective to predict the inelastic behaviors of RC members subjected to various loads. 6) If the distribution of concrete strength in RC member related to the casting height is considered in the analysis, the analytical predictions are in good agreement with experimental results over a wide range.
