Method for monitoring resilience of shield tunnel based on multi-source heterogeneous data

A method for monitoring resilience of a shield tunnel based on multi-source heterogeneous data, comprising:

• obtaining the multi-source heterogeneous data and processing computer data,
• wherein the obtaining the multi-source heterogeneous data comprises:
• obtaining a tunnel displacement u, a tunnel cross section convergence ΔD and a tunnel damage area S;
• and
• the processing computer data comprises:
• S1, performing data preprocessing, wherein data obtained in the step of obtaining the multi-source heterogeneous data is verified, and when the data meets predefined criteria, the data is stored;
• when the data does not meet the predefined criteria, the data is manually reverified, the data is stored when the data meets the predefined criteria and the data is deleted when the data does not meet the predefined criteria;
• S2, performing data processing, wherein the multi-source heterogeneous data preprocessed in step S1 is processed to calculate a tunnel performance indicator P and a tunnel resilience indicator Re;
• S3, determining tunnel status, wherein a status of resilience of the tunnel is determined according to data in step S2;
• S4, manually correcting a result in step S3;
• S5, giving a remediation measure according to the status of the resilience of the tunnel in step S4;
• S6, storing and archiving processed data;
• and
• S7, performing terminal outputting, wherein the data obtained in step S6 is displayed and output through a plurality of terminals;
• wherein the tunnel performance indicator P is calculated by
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• wherein shield tunnel performance indicator components P1, P2 and P3 characterize vertical performance, horizontal performance and damage extent of the tunnel, respectively, and performance of the tunnel is characterized as a unit in a three-dimensional space coordinate system with vertical performance, horizontal performance and damage extent as coordinate axes;
• wherein subscript his represents a historical maximum of a variable, and subscript code represents a code control value of the variable;
• and performance indicator components have characteristics that a value range of an indicator is 0 to 1, which is capable of reflecting irreversible effects of historical deformation and damage on a tunnel structure;
• when deformation and damage area of the tunnel reaches code control values, the performance indicator components are 0.75;
• and therefore, the performance indicator components are divided into four sections of high, middle, low and extremely low according to 0.75 to 1, 0.5 to 0.75, 0.25 to 0.5, and 0 to 0.25, respectively;
• wherein the obtaining a tunnel cross section convergence ΔD comprises:
• splicing and fitting point cloud data acquired by a three-dimensional laser scanner to obtain the tunnel cross section convergence ΔD.