Method for dragging upper-layer building

Abstract

The invention discloses a method for dragging an upper-layer building of a deepwater drilling ship or maritime work petroleum equipment. The method includes steps of 1, vacating positions for laying three rows of steel plates on a ship berth; 2, longitudinally laying the three rows of steel plates on the ship berth near a wharf until the steel plates reach the bottom of the upper-layer building, and utilizing the steel plates as slide rails; 3, placing three longitudinal box beams on the slide rails and supporting the upper-layer building by the longitudinal box beams; 4, fixedly welding the upper-layer building with the three longitudinal box beams; 5, removing bottom support piers after an upper layer is completely manufactured; 6, coating lubricating oil on the slide rails; 7, dragging the upper-layer building to a side of the wharf by the aid of hoists and labor-saving pulley blocks via the slide rails. The method has the advantages that the distances from the upper-layer building to crane jibs of existing sea cranes can be shortened, hoisting requirements of the upper-layer building can be met, expenses and construction periods for hiring large sea cranes can be saved, the method for dragging the upper-layer building is flexible, convenient, speedy and safe and is high in efficiency, and auxiliary dragging tools are simple in manufacture.

Description

technical field [0001] The invention relates to the technical field of a deep-water drilling ship or offshore oil equipment construction and living area structure towing method. Background technique [0002] In order to improve the efficiency of the berth or dock, the superstructure and living quarters of deep-water drilling ships or offshore oil equipment are generally constructed on the small berth next to the outfield wharf. or near the wharf of the berth, and then hoist the superstructure to the ship for loading. Since the distance between the outfield wharf and the small slipway next to it is relatively long, and the overall weight of the superstructure is huge after completion, the existing sea crane arm distance cannot meet the lifting capacity. Requirements, often rent a larger sea crane, and the rental fee is as little as one million, the cost is extremely high, and the time for renting a sea crane is also very long. Contents of the invention [0003] In order to...

AI Technical Summary

Problems solved by technology

[0002] In order to improve the efficiency of the berth or dock, the superstructure and living quarters of deep-water drilling ships or offshore oil equipment are generally constructed on the small berth next to the outfield wharf. or near the wharf of the berth, and then hoist the superstructure to the ship for loading. Since the distance between the outfield wharf and the small slipway next to it is relatively long, and the overall weight of the superstructure is huge after completion, the existing sea crane arm distance cannot meet the lifting capacity. Requirements, often rent a larger sea crane, and the rental cost is as little as one million, the cost is extremely high, and the time for renting a sea crane is also very long