Floating dock deflection accurate measurement method based on mathematical modeling

Abstract

The invention discloses a floating dock deflection accurate measurement method based on mathematical modeling. The method comprises the following steps: a plurality of measuring pipes perpendicular toa dock deck are evenly installed in the bow direction and the stern direction respectively, the bottoms of the measuring pipes are communicated with one another through communicating pipes, water orother liquid is injected into the measuring pipes, and a liquid level sensor is installed at the same horizontal position of the lower portion of each measuring pipe and used for measuring the heightof a liquid column in each measuring pipe; data of all measurement points including head and tail measurement points are all brought into a processing range, and the undeformed liquid level height ofeach measurement point is calculated through fitting by means of a method combining a least square method and a Lagrange interpolation method; and a deflection function model of each continuous pointin the bow and stern direction of the dock is fitted through limited deflection values of each measurement point. According to the invention, an approximate deflection mathematical function model is fitted through limited measurement data, and then the deflection condition of any longitudinal point of the dock can be predicted.

Description

technical field [0001] The invention relates to a method for measuring the deflection of a floating dock, in particular to a method for accurately measuring the deflection of a floating dock based on mathematical modeling Background technique [0002] Floating dock is a ship repairing platform that controls its floating and sinking by ballasting and pumping the water in the ballast water tank at the bottom. It is an important facility tool in the shipbuilding industry. When the ship enters and exits the dock, the floating dock needs to sink and float. During the process, the dock body will produce a certain deformation, which is called deflection. Real-time monitoring of the deflection of floating docks is very important to the safe operation of floating docks. [0003] At present, several commonly used deflection measurement data processing methods for floating docks, on the one hand, the utilization rate of the data is not enough, and the deflection data at the beginning ...

AI Technical Summary

Problems solved by technology

[0003] At present, several commonly used deflection measurement data processing methods for floating docks, on the one hand, the utilization rate of the data is not enough, and the deflection data at the beginning and the end will be ideally processed, which is characterized as no deformation; on the other hand, it can only measure the measurement points It is impossible to know the deflection value of the place where no measuring point is set, and thus cannot accurately control the water inlet and outlet of each water tank, resulting in uneven stress on the dock, which is likely to lead to safety accidents

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