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1前言在工程结构稳定分析中,用于判别平衡稳定状态、确定临界荷载的基本方法有两种:一种是根据临界状态的静力特征而提出的方法,称为静力法;另一种是根据临界状态的能量特征而提出的方法,称为能量法。这两种方法都是按小挠度理论求其临界荷载,掌握静力法与能量法在本质上的区别与联系,对研究结构的稳定性和计算其稳定内力有着不可忽视的作用。
1 Introduction In the stability analysis of engineering structures, there are two basic methods for determining equilibrium stability and determining critical loads: one is a method based on the static characteristics of a critical state, which is called the static method; the other is It is a method that is based on the energy characteristics of a critical state and is called the energy method. Both of these methods are based on the theory of small deflection to find the critical load, grasp the essential differences and relations between the static method and the energy method, and have a non-negligible role in studying the stability of the structure and calculating its stable internal force.