本文提出了一种对实际刚架结构达到破坏荷载时进行位移分析的线性规划方法。我们把这类结构离散为有限个单元,并分段采用线弹性——理想塑性原理来描述。公式是针对单增荷载建立的。没有考虑铰的塑性区的开展,也没有考虑几何形状的改变对平衡条件的影响。解决有规则破坏机构(regular collapse mechanism)情况的问题时,采用了极限能 This paper presents a linear programming method for the displacement analysis when the actual rigid frame structure reaches the failure load. We have divided this type of structure into a finite number of units and described it in terms of linear elasticity, the ideal plasticity principle. The formula is established for single load increments. The development of the plastic zone of the hinge was not considered and the influence of the change of the geometry on the equilibrium conditions was not considered. Limit energy is used to solve problems with the regular collapse mechanism.