Structural deformation observation and data processing method at operation and maintenance stage of high-speed train

Abstract

The invention relates to a structural deformation observation and data processing method at the operation and maintenance stage of a high-speed train. Though a structural deformation observation and data processing at a construction period can predict under-track settlement, the method has adaptability-related problems in the structural deformation monitoring at an operation period. The method comprises the steps of: laying reference points, deformation monitoring points and characteristic section points at two levels; conducting rigorous constraint adjustment to calculate the heights of the reference points, the deformation monitoring points and the characteristic section points; under the situation that the deformation monitoring points are broken or lost, conducting broken height repair to actually measured height difference to eliminate high-difference mutation errors caused by broken height; and calculating actually measured height difference between two adjacent monitoring points, directly adopting the actually measured height difference to conduct differential deformation analysis to the adjacent deformation monitoring points and calculating current additional gradients, accumulated additional gradients, gradient difference and accumulated gradient difference of a line. The structural deformation observation and data processing method at the operation and maintenance stage of the high-speed train has the advantages that the field observation workload is reduced, the differential deformation is accurately and intuitively reflected and comprehensive suggestions are made for the safe operation of railways.

Description

technical field [0001] The invention relates to a method for monitoring deformation of a railway structure, in particular to a method for observing and processing data of a structure deformation during the operation and maintenance phase of a high-speed railway. Background technique [0002] In recent years, my country's high-speed railway construction has entered a stage of rapid development, especially the large-scale application of ballastless track technology in high-speed railways, which puts forward higher requirements for the structural deformation control of the line. At present, the structural deformation observation and data processing methods during the construction period have made clear requirements in the current codes and regulations, and the application in the construction process has gradually matured. Its main purpose is to predict the final settlement of the offline project and the post-construction Settlement, reasonable determination of ballastless track...

AI Technical Summary

Problems solved by technology

[0003] Due to the different purpose and focus of structural deformation monitoring during the construction period and the operation period, and considering that the operations during the operation and maintenance period have their own characteristics, the structural deformation observation method and data processing method during the construction period are no longer applicable to the operation period; and because The operation and maintenance of high-speed railways in my country has just begun, and there is a lack of practice and experience in monitoring structural deformation during operation, and the research on structural deformation monitoring during operation is not sufficient

The current norms and regulations have the following problems in the application of structural deformation observation and data processing during high-speed railway construction to structural deformation monitoring during operation: Since there are many civil engineering works along the high-speed railway, the work base points buried during the construction period (with a distance of about 200m) are seriously damaged. Therefore, the settlement deformation monitoring network deployment and observation methods adopted during the construction period are no longer suitable for the operation period

Deformation monitoring points may be damaged or lost due to various reasons, resulting in a broken height phenomenon

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