顶底角钢连接初始刚度的分析和研究

初始连接刚度在节点刚度分类和钢结构地震分析中占有很重要的地位，因此研究连接的初始刚度很有现实意义。首先从理论上探讨了顶底角钢连接初始刚度的计算方法，建立了有关连接初始刚度的半经验半理论计算公式。为了验证此公式，进行了2个顶底角钢梁柱连接节点原型试件在往复荷栽作用下的实验研究，得到了顶底角钢梁柱连接的连接刚度，分析了影响连接刚度的主要因素。最后，对理论计算公式得到的结果和试验结果进行了对比，结果表明：此公式误差较小，具有一定的工程参考价值。

Analysis and Study of the Initial Stiffness of Top-seat Angles Connections

The initial stiffness top-seat angles connections have an important effect in classing the connections and seismic analyzing of steel structure. Therefore it is very important to study the initial stiffness of connections. Firstly this paper presented the methods of determining the initial stiffness of top-seat angles connections and brought forward a formula about the initial stiffness of this type connection. In order to validate this formula,the seismic behavior of top-seat angles beam-to-column connections under cyclic loading is presented. The rotational stiffness of top-seat angles connections is analyzed and the main factors influencing it are showed. At last, a comparison between this formula and the test results is proceed and it showed that this formula has some engineering reference worth because it produced less errors.