Design method for section closure accuracy of octagonal pile leg

Abstract

The invention relates to a design method for the section closure accuracy of an octagonal pile leg. The method comprises the following steps of: dividing the pile legs into sections; performing accuracy distribution on each section by using the dimension chain principle; calculating the compensation amount of welding deformation to replace allowance by a method for calculating the compensation amount of ship sections, so that the sections are constructed without the allowance; and forming a dimension chain by using the added compensation amount, the basic dimensions of the sections and a gap between weld joints, and calculating the reasonable tolerance range of the closed sections. The method has the advantages that the dimension accuracy of pin holes after closure welding is ensured, an impact load and material wear which are caused when the pin holes are matched with pin shafts are reduced, working time and materials are saved, the working requirement of the pile leg is met, and the like.

Description

technical field [0001] The invention relates to the technical field of precision design of marine engineering equipment, in particular to a method for designing the dimensional precision of octagonal pile legs segmented and closed. Background technique [0002] Offshore wind power generation is a new direction of development in the world today, and its wind turbine installation equipment and technology are the core technologies for occupying the field of offshore wind power. The design of wind power equipment installation ships has high technical content and difficult construction, requiring the support of a large number of high-tech core technologies. The wind power installation ship has a number of legs that can be lifted. The leg is a key component of the wind power installation ship. Its bearing capacity is responsible for the lifting of the whole ship. Safety and effectiveness of work. The production of pile legs is extremely important in the construction of the entir...

AI Technical Summary

Problems solved by technology

The patent applied by Dalian Shipbuilding Industry Group Co., Ltd.: large-scale truss-type pile leg segmentation data detection method (patent number: CN200710157587.7) discloses a method for measuring the size and local accuracy of triangular truss-type pile legs. Dimensions and segmental dimensions to obtain the dimensional accuracy and deviation of each measurement segment belong to the category of precision control, but the accuracy design has not yet been mentioned. In the case of segmental welding deformation, the design of the specific tolerance of the segmental size is considered.

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