高强螺栓钢管柱端板节点在循环荷载作用下的F-δ曲线函数模型研究

Performance Investigation on F-δ Curve Function Model of End Plate Connection with High-Strength Bolts under Cyclic Loading

摘要: 为了建立高强螺栓钢管端板节点在循环荷载作用下的F-δ曲线函数模型，采用四种常用的函数模型结合实测数据进行了计算，分析了各函数曲线的拟合程度。结果表明：采用多项式函数模型能较好的还原试件实际的F-δ曲线，对数函数模型对试件弹塑性阶段的曲线拟合要优于其他函数。

Abstract: In order to establish the F-δ curve function model of end plate connection with high-strength bolts under cyclic loading, four conventional function models were used to compute based on measured data and the fitting degree of all function curves was analyzed. The results showed that the poly-nomial function model can fit the actual curve better and the logarithmic function model shows its performance is more effective than other function models at elastoplastic stage.