本文将非线性规划技术中的单纯形法应用于结构识别问题,并根据一个普通单纯形法在使用中存在的问题,提出了一个修正算法。修正算法的中心是引入一个反射单纯形的算法步骤,以克服普通算法在某些情况下会造成的一种不收敛到极小点的困难。文中对一座遭受地震破坏的框架建筑作了弹塑性参数的具体识别研究。 In this paper, the simplex method in nonlinear programming technique is applied to the problem of structure recognition. According to the problems existing in the use of an ordinary simplex method, a correction algorithm is proposed. The center of the correction algorithm is an algorithm step that introduces a reflection simplex to overcome the difficulty of the ordinary algorithm in some cases that does not converge to the minimum point. In this paper, a concrete identification study of the elasto-plastic parameters of a frame building damaged by an earthquake was conducted.