巨型空间钢框架结构的二阶实用分析

Practical Approach of Second Order Analysis for Space Mege-steel Frame Structure

为了探讨巨型空间钢框架结构二阶分析的实用方法,从简化结构的计算模型入手,采用连续化概念和刚度等效原则,将立体格构式巨型构件等效为三维实腹式构件,在对巨型梁柱的节点域进行等效后获得巨型钢框架结构的三维等效模型,据此建立结构的二阶分析刚度方程,并用数值算例检验了该方法的实用性与可靠性。方法可供结构方案设计或初步设计时参考。

To develop a practical approach of second order analysis for space mega-steel frames, a three dimensional equivalent model with solid members for the space mega-steel frame structure is established according to continuous concept and stiffness equivalent principle, and the stiffness equation of second order analysis for the model is proposed. Numerical examples are used to demonstrate the robustness, accuracy and efficiency of the proposed analysis method and computer program. The method can be used for preliminary design in engineering.