混凝土结构的断裂破坏是混凝土中裂缝累积损伤的结果。由于混凝土材料性能和作用荷载等因素的随机性,混凝土结构裂缝的扩展过程也表现出随机特征。本文应用马尔柯夫随机过程模型实现了对这一过程的概率分析,并给出了状态转移概率矩阵的确定方法,文末结合简单算例说明了该方法的具体应用。 The failure of concrete structures is the result of the cumulative damage of cracks in concrete. Due to the randomness of concrete material properties and acting loads, the expansion process of concrete structure cracks also shows random characteristics. This paper applies Markov random process model to realize the probabilistic analysis of this process, and gives the method of determining the state transition probability matrix. At the end of the paper, the concrete application of the method is illustrated with a simple example.