Method for correcting locating inclination error of immersed tube installation measuring tower

Abstract

The invention belongs to the technical field of engineering measurement, and particularly relates to a method for correcting locating an inclination error of an immersed tube installation measuring tower. The method comprises the steps of initial calibration of tube joint postures, installation of clinometer equipment, measurement tower posture calibration, measurement tower positioning inclination error correction and the like. According to the method, clinometers are additionally arranged at the tops of the measuring towers at the head end and the tail end of the pipe joint and the top of the pipe respectively, and the clinometers and the clinometers in the pipe are combined to determine the postures and the mutual relation of the measuring towers and the pipe joint, so that the posture change of the measuring towers is monitored in real time in the sinking process of the pipe joint; real-time automatic prompting and man-machine interaction type real-time correction of the positioning inclination error of the measuring tower are achieved, the positioning precision and reliability of the measuring tower are improved, and the installation precision of the immersed tube is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of engineering measurement, and in particular relates to a method for correcting the positioning inclination error of an immersed tube installation measuring tower. Background technique [0002] In recent years, with the development of society, large-scale immersed tube tunnels for cross-sea passages have emerged continuously. The construction scale of immersed tube tunnels has become larger and larger, the volume of immersed tubes has also increased, and the requirements for installation accuracy have become higher and higher. The immersed tube installation measurement tower method is a modern measurement method that combines GNSS measurement with underwater measurement and positioning technology. It is mainly composed of GNSS measurement, inclinometer correction, data processing system, etc. It has high precision, high reliability, and simple operation. It is widely used in the construction of Hong Kong-Zh...

AI Technical Summary

Problems solved by technology

[0003] However, during the sinking and docking process of immersed pipe joints, under the joint action of the increasing load of the water tank in the pipe and the surrounding water pressure, the pipe joints inevitably undergo overall or local deformation, resulting in slight changes in the relative geometric positions of the measuring tower and the pipe joints. Affect the positioning accuracy of the measuring tower

Once the positioning accuracy of the measuring tower is affected, it will lead to a decline in the construction quality, and even lead to the failure of the installation of the immersed tube, which will increase the project cost and prolong the construction period, becoming a major risk point of the project

Images