Method for constructing upper conduit frame of six-pile conduit frame

Abstract

The invention relates to a method for constructing an upper conduit frame of a six-pile conduit frame. The construction method comprises the steps of first segmenting the upper conduit frame: dividing the conduit frame into seven segments in total, wherein a main barrel is independently a segment and is marked as D01, with a weight of 157 tons; inclined strut steel pipes, horizontal supporting steel pipes and pile sleeves form six L-shaped segments, correspond to steel pipe pile, and are sequentially marked as G01, G02, G03, G04, G05 and G06, and the single segment weighs 59 tons. The construction method comprises the steps that steel plates are inspected after arriving; and according to a jacking diagram, the steel plates are subjected to blanking, lineration and groove cutting, steel plate machining edge rolling, cylinder splicing, assembly welding, jig frame manufacture, segmenting pre-folding, segmented handing over for examination and segmented coating. The method has the advantages that horizontal type pre-assembly is performed; by segmented manufacture of the main barrel and a supporting pipe, the inclined strut steel pipes are divided into two segments to be pre-assembled, finally the size of each segment is determined, and the precision is high; vertical type folding is performed, and the method facilitates final assembly.

Description

technical field [0001] The invention relates to the field of offshore wind power generation, in particular to a method for constructing an upper jacket of a six-pile jacket. Background technique [0002] In my country, offshore wind power generation is a new type of industry. After 2007, my country began to gradually develop the offshore wind power generation industry. As the installed capacity of offshore wind turbines increases year by year, the basis of offshore wind power is diversified. When other renewable energy sources (such as biomass energy, tidal energy, etc.) are not yet mature, wind energy has become one of the primary choices for alleviating global environmental problems and energy crises. one. At present, among various foundation types of offshore wind turbines, single pile, jacket, underwater three-pile and above-water three-pile foundation types are the most commonly used types. [0003] Among them, the jacket foundation, as a relatively mature foundation ...

AI Technical Summary

Problems solved by technology

Due to the closed triangle between the main cylinder of the jacket and the support tube, and the large volume of the jacket, it is difficult to assemble after segmental fabrication, and the length of each segment is difficult to control accurately, resulting in low manufacturing accuracy

At the same time, its disadvantage is that there are many relative nodes, and each node requires special processing, which requires a lot of manpower, material and financial resources, which increases the investment cost of offshore wind power to a certain extent.

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