Based on the features of existing structure, the nonstationary random process model of resistance for existing structure is proposed. 根據服役結構的特點(diǎn)，提出了服役結構抗力的非平穩隨機過(guò)程模型。
The first one is chosen using time series method, and the second is obtained from measurements using the autocovariance function of the stationary stochastic process. 二是應用平穩隨機過(guò)程的自協(xié)方差函數從雙差觀(guān)測值中提取的正則化矩陣。
