高层建筑支撑钢框架结构二阶位移的实用计算

为了探寻高层建筑支撑钢框架结构二阶位移的实用算法,本文通过刚度等效原则,交铁二阶效应等效为结构的负刚度,从而使导出的基本微分方程,在形式上与按一阶理论导出的方程相同。因此,可借用一阶分析方法计算结构的二阶位移,应用非常简便。文末通过算例检验了本文方法的可靠性。

A Practical Approach for Second Order Displacements of Braced Steel Frames in Tall Buildings

For studing the practical approach of braced steel frames in tall buildings, second order effect of structures is transformed into negative stiffness according to equivalent principle. In from, a derived basis differential equation by application of this model is equal to derived basic differential equation by first order theory. This equation is very convenient in practical use, and the reliability of the methods is inspected by an example.