Single-point hoisting type pile erecting system and construction method for pile erecting

Abstract

The invention provides a single-point hoisting type pile erecting system and a construction method for pile erecting, and belongs to the technical field of offshore wind power pile foundation construction. The single-point hoisting type pile erecting system and the construction method for pile erecting realize single-point hoisting type pile erecting of an offshore wind power pile. The single-point hoisting type pile erecting system involves a crane, a guide frame, a pile turning device, a clamping block and a hoisting point, wherein the clamping block and the hoisting point are arranged on apile body; the clamping block and the hoisting point are arranged close to the two axial ends of the pile body, and the clamping block is located on the lower side surface of the pile body when the pile body is horizontally placed; a hoisting cable of the crane is connected with the hoisting point; the guide frame is fixedly supported on the seabed at the position of the pile to be erected, the guide frame is located below the end, provided with the clamping block, of the pile body when the pile body is horizontally placed, and a U-shaped opening for allowing the pile body to be turned thereinand limiting the position of the erected pile body is formed in the side, away from the hoisting point, of the guide frame; the pile turning device is arranged on the side, away from the U-shaped opening, of the top of the guide frame, the pile turning device turns towards the direction of the U-shaped opening, the pile turning device supports the lower side surface of the pile body when the pilebody is horizontally placed, and the side, close to the hoisting point, of the pile turning device is abutted against the side, away from the hoisting point, of the clamping block.

Description

technical field [0001] The invention belongs to the technical field of offshore wind power pile foundation construction, and in particular relates to a single-point lifting pile system and a pile construction method. Background technique [0002] The pile weight of wind power piles is usually 600-1200t. At present, in the construction of offshore wind power pile foundations, two-point lifting is usually used to erect piles. In some projects, wind power piles are lifted by setting two lifting hooks on a single lifting ship, which requires each lifting hook to meet the pile weight requirements. The requirements for the weight of the ship are high, the cost of the crane ship is high, and the construction cost is high. In other projects, two lifting ships are used to lift the lifting points on both sides of the wind power piles, one of which is used as the main lifting ship to mainly carry the pile weight, and the other is used as an auxiliary pile However, this method of pili...

AI Technical Summary

Problems solved by technology

In some projects, wind power piles are lifted by setting two lifting hooks on a single lifting ship, which requires each lifting hook to meet the pile weight requirements. The requirements for the lifting weight of the ship are high, the cost of the crane ship is high, and the construction cost is high

In other projects, two lifting ships are used to lift the lifting points on both sides of the wind power piles, one of which is used as the main lifting ship to mainly carry the pile weight, and the other is used as an auxiliary pile , however, this method of piling requires two crane ships, and the construction cost is high and the sea area is large

In addition to the two-point lifting pile method, some projects are constructed with a full-slewing crane and a pile turner. Among them, the full-slewing crane mainly carries the pile weight, and the pile turner is used to assist the pile. However, this kind of pile In the method, the full-slewing crane needs to meet the pile weight requirements, and the cost is relatively high. Moreover, since the full-slewing crane can only provide a single point of lifting force, the pile turner usually needs to be equipped with pushing parts for pushing the wind power pile to turn over, such as hydraulic rods, etc. , its cost is also higher, and the overall construction cost is higher

If the pile turner is not equipped with pushing parts, in order to realize the single-point lifting of the pile, it needs to overcome the horizontal force of at least 200-300t, which cannot be met by the conventional ship mooring system

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