Offshore steel cylinder construction positioning system

Abstract

Provided is an offshore steel cylinder construction positioning system. The offshore steel cylinder construction positioning system is a positioning monitoring system which is composed of a global position system (GPS), an automatic tracking total station, a high-precision liquid indicator, a wireless data transfer radio, a desk computer and the like. According to the offshore steel cylinder construction positioning system, a hull equipment coordinate system is built in a positioning ship, and installation parameters of a GPS positioning antenna and the automatic tracking total station are confirmed in the hull equipment coordinate system. Four 360-degree reflecting prisms are installed on the outer side of a vibrating beam in 90-degree angle mode. Data of a reflecting mirror hull coordinate system, an included angle between a hull coordinate system and a engineering coordinate system, a reflecting mirror engineering coordinate, a plane engineering coordinate of a cylinder positioning central point, a basic standard fore shaft azimuth angle, a cylinder upper edge opening elevation and the like are calculated and are cleared up according to a plane geometrical relationship between key points of a hull and a steel cylinder, and skewing correction of coordinates of the key points in the hull coordinate system, and finally, accurate positioning is achieved. The offshore steel cylinder construction positioning system reduces complexity of a system to improve reliability under the premise that using requirements are satisfied.

Description

technical field [0001] The invention belongs to a GPS construction positioning system for port engineering, in particular to a construction positioning system for steel cylinders on the sea. Background technique [0002] Our Bureau recently undertook the construction of the artificial island of the Hong Kong-Zhuhai-Macao Bridge. In this project, about 150 steel cylinders with a diameter of 22 meters had to be vibrated in the sea. During construction, parameters such as the central coordinates, inclination angle, and elevation of the cylinder mouth of the steel cylinder must be monitored in real time. There are four longitudinal locks on the outside of the cylinder, and the spatial azimuth of the locks should also be monitored. [0003] A few years ago, our bureau carried out offshore steel cylinder construction projects in the Yangtze River Estuary, Panyu and other places, but they were all near-shore constructions, and their plane coordinates were determined by methods suc...

AI Technical Summary

Problems solved by technology

[0003] A few years ago, our bureau carried out offshore steel cylinder construction projects in the Yangtze River Estuary, Panyu and other places, but they were all near-shore constructions, and their plane co...

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