Application Of Wavelet Analysis And Combination Model In Settlement Prediction

In accordance with the requirements of the design at a certain time period for the settlement of foundation pit monitoring,according to the monitoring data processing and analysis,accurate settlement of foundation pit is expected trend,to take timely measures to prevent the occurrence of disasters and accidents,ensure the safety of foundation pit and surrounding buildings and personnel.In this paper,by using the method of wavelet de-noising,to handle the settlement of foundation pit monitoring data and the observation data were used to predict the change trend.In a city a hostel foundation settlement observation,for example,selecting representative monitoring points used to analysis and research.First of all,according to the practical observation data by using the grey system and time series prediction model are calculated respectively,according to the predicted results of different models,comparing their respective advantages and disadvantages;Second,the application of soft threshold method of wavelet de-noising,the instance of the original monitoring data preprocessing;Finally,respectively,by using the classical grey system and time series model,time series-combinations of grey system model to predict the data after wavelet noise reduction and its forecast results are compared.Comparison results show that the use of classical grey system model to predict the result is better than that of time series model,using the time series-combinations of grey system model to predict the result is superior to the classical grey system and time series model;Wavelet noise reduction of grey system model to predict the result is better than that of without noise time series-combination model of grey system and time series model is superior to the wavelet noise reduction.Finally found the wavelet noise reduction time series-combinations of grey system model to predict the optimal effect.In this paper,the research content of foundation pit engineering design and construction monitoring is of important guiding significance for the design.