Deep foundation pit safety assessment method based on utility theory and D-S evidence reasoning
A technology of evidence reasoning and deep foundation pits, applied in data processing applications, instruments, predictions, etc., can solve problems such as difficulty in realizing deep foundation pit safety assessment, inability to provide support for deep foundation pit project intelligent management and long-term risk methods, and achieve Achieve qualitative and quantitative analysis, improve forecasting ability, and improve the effect of accuracy
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[0101] Below in conjunction with embodiment and description the present invention will be further described.
[0102] A method for evaluating the safety of deep foundation pits based on utility theory and D-S evidence reasoning of the present invention is characterized in that the method comprises the following steps:
[0103]Step 1: Use the nonlinear prediction model of the future state based on the third-order Volterra series to predict the future state of the deep foundation pit through historical and current data.
[0104] Among them, the method for predicting the future state of deep foundation pits includes the following steps:
[0105] Step 1.1: The historical data and current observations of deep foundation pit safety indicators are used as model input, as shown in the following formula:
[0106] Z(k)=[z(k), z(k-1),..., z(k-T+1)] T
[0107] Among them, z(k) represents the collection value of the evaluation index at time k, and T represents the length of the time ser...
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