By using the matrix geometric solution method, we derive the explicit expressions for steady-state probability vector.
利用矩阵几何解的方法，导出了系统稳态概率向量的明显表达式。
The method provided in the paper is more adaptive to the actual project because of the probability vector presenting the stable state of structure completely.
由于可靠性向量全面描述了结构可靠性状态，因此所提方法更符合工程实际。
The probability density evolution equation (PDEE) of the stochastic structural response is then established by introducing augmented state vector.
密度演化方法是一类直接获取随机结构动力反应概率密度函数及其演化过程的有效方法。
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