Based on the calculating mechanism of definite element method, the principle and method of analysis on the structural stability of rigid frame Bridges etc., are described in this paper.
根据“有限元法”的计算原理，对刚架桥等结构稳定性的分析原则和方法进行了介绍。
With a door rigid frame as example, the influence is analyzed of elasticity, plasticity and different initial bending on stability of the frame respectively.
文中采用门式刚架作为算例，分别研究了弹性、塑性及不同初始挠曲对其稳定性的影响。
The unsymmetrical construction loads is dangerous to the stability of long-span prestressed concrete rigid-frame bridge during cantilever construction phase.
非对称形式的施工荷载对悬臂施工阶段大跨径预应力混凝土刚构桥的稳定性更为不利。
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