关于日本框架柱受剪承载力公式的讨论

通过对日本抗震设计规范中有关钢筋混凝土框架柱受剪承载力代表性公式的研究，凸现了由经验公式到基于桁架一拱模型建立的发展趋势。对各公式中所包括的影响框架柱受剪承载力的主要因素(如剪跨比、轴压比、配箍率、混凝土强度、纵筋率等)进行了深入讨论，并采用框架柱受剪承载力试验数据考察了各个公式的有效性。

Behavior assessment of shear equations of RC columns in Japanese design codes

Japanese development of shear design methods of RC framed columns, from empirical expressions to truss-arch modeling, is outlined in this paper. Correlation of the design equations with influential factors such as shear span ratio, axial force ratio, reinforcement ratios in both transverse and longitudinal direction, compressive strength of concrete, and so forth,is identified by means of numerical examples. Behavior assessment of these shear design equations is calibrated on the basis of available testing data of cyclic experiments on RC columns.