Research on deformation monitoring of foundation pit in commercial complex projects based on grey theory prediction model
Due to the excessive formation of foundation pits,the difficulty of safety monitoring has in-creased.A deformation monitoring method for foundation pits based on grey theory prediction model is proposed in this research.Firstly,a grey theory prediction model and a first-order line-ar dynamic differential equation are established,and the response function is calculated using sample data and the time and state sequences of excavation deformation parameters.The function values are trans-formed into test point forms,and the vector and weight parameters of each point are solved as the initial reference for the model.Secondly,the initial sequence of the monitoring model is established,and the least squares integration method is used to generate the monitoring mean equation,then the background value,grayscale value,and proximity coefficient are calculated.Finally,the linear relationship is compared to pro-vide the residual condition sequence of the monitoring points,and to obtain the implementable conditions of the monitoring model to effectively monitor the deformation of the foundation pit.The experimental verification was carried out using the Ocean New Light Commercial Complex project as an example,and the results showed that the grey theory prediction model has high monitoring accuracy,small errors,and strong practicality.
Grey theory prediction modelFoundation pit deformationResponse functionState sequenceMonitoring mean equation
万方数据
维普
