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Numerical evaluation of column base rigidity

机译：柱基刚度的数值评估

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Fixity and behaviour of steel column base connection have been studied in the current investigation. Effects of components such as base plate, anchor bolts and stiffeners have been considered throughout a numerical study. A non-linear three dimensional finite element model has been utilized to simulate the column base connection. It is shown that in addition to the rigidity of the column base, behaviour such as moment-rotation property and stress distribution can be significantly influenced by altering the properties of its components. Besides, the upper and lower bounds for rotational stiffness and ultimate strength of column base connections were obtained and categorized. Analytical results indicate that by choosing a minimum thickness for base plate, appropriate size of stiffeners and careful arrangement of anchor bolts, a realistic and accurate design is reachable for both nominally fixed or pinned base plate.
机译：在目前的研究中已经研究了钢柱基础连接的固定性和行为。在整个数值研究中，都考虑了诸如底板，地脚螺栓和加劲肋等部件的影响。非线性三维有限元模型已被用来模拟柱基连接。结果表明，除了柱基的刚度外，改变其构件的特性还可以显着影响诸如力矩旋转特性和应力分布之类的行为。此外，获得并分类了柱基础连接的旋转刚度和极限强度的上限和下限。分析结果表明，通过选择底板的最小厚度，适当的加劲肋尺寸和仔细布置地脚螺栓，可以对名义上固定或固定的底板实现逼真而准确的设计。

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