Method and device for predicting deformation of proximity structure caused by shield through random forest fused with SVM

Abstract

The invention discloses a method for predicting deformation of a proximity structure caused by a shield through a random forest fused with an SVM. The method comprises the steps of: collecting data corresponding to main factors according to the main factors affecting the deformation and settlement of a building; establishing a random forest model, training the data according to the random forest model, and performing importance measurement to obtain an optimal feature set; and performing dimensionality reduction processing on the optimal feature set, and inputting the optimal feature set intoa support vector machine model for training to obtain a building settlement prediction result. The invention further discloses a device for predicting the deformation of the proximity structure causedby the shield through the random forest fused with the SVM. According to the method, random forest feature selection is utilized, variables having small correlation with a predicted value can be eliminated from excessive influence factors, key variables for modeling are screened out to obtain an optimal variable combination, the dimensionality of the support vector machine training model is reduced, the prediction precision is improved, a prediction result closer to the reality is obtained, and more stable and more accurate prediction of building deformation settlement is realized.

Description

technical field [0001] The invention belongs to the field of intelligent algorithm prediction of deformation and settlement of adjacent buildings induced by tunnel shield construction, and specifically relates to a method and device for predicting deformation of adjacent structures caused by shield tunneling with random forest fusion SVM. Background technique [0002] In recent years, with the rapid development of my country's social economy and the continuous improvement of urban modernization, the development and utilization of urban underground space has become a key development direction. Correspondingly, the construction scale of subway tunnels in major cities is rapidly expanding. The excavation of subway tunnels causes deformation and stress redistribution in the ground, which inevitably leads to uneven settlement on the surface, especially for existing buildings, often small deformation and settlement will bring great harm. Affect the safety, stability and function o...

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Problems solved by technology

[0004] In view of the above defects or improvement needs of the existing methods, the present invention provides a method and device for predicting the deformation of adjacent structures caused by shield tunneling with random forest fusion SVM, which is used to solve the rapid prediction of deformation and settlement of surface buildings induced during tunnel excavation question

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