Replacing device of self-elevating type platform truss spud leg semicircular plate and replacing method thereof

Abstract

The invention discloses a replacing device of a self-elevating type platform truss spud leg semicircular plate. The replacing device comprises an upper sheath assembly and a lower sheath assembly, the back portion of the outer side sheath of each sheath assembly is fixedly provided with a supporting seat 3, and a supporting steel tube assembly 4 and a vertical jack 5 are arranged between the upper supporting seat 3 and the lower supporting seat 3; moreover, a tooth-shaped complementary plate 8 is arranged in a mode of being in tooth-shaped matched with the broadside of a spud leg main string tube 9, and the tooth-shaped complementary plate 8 is fixed by a bolt 21; the two sides, between the upper supporting seat 3 and the lower supporting seat 3, of the tooth-shaped complementary plate 8 are fixedly provided with anti-bending backboards in a welded mode. The invention further provides a replacing method needed when the self-elevating type platform truss spud leg semicircular plate deforms and is damaged, the construction period can be greatly shortened, the number of lifting work times and construction amount are lowered, the safety work coefficient is increased, so that convenient, safe and reliable replacing is achieved, on the basis of guaranteeing construction safety and quality, the construction period can be effectively shortened, and the construction cost is lowered.

Description

technical field [0001] The invention relates to the maintenance of the truss pile legs in the ocean engineering platform, more specifically, the replacement of the half-circle plates of the pile legs. Background technique [0002] The jack-up platform is mainly used in shallow sea oil and gas exploration and development, near-shore marine engineering development and other fields, and is the main equipment for marine engineering development at present. During the operation of the platform, the legs support the main body of the platform, which is the key structure of the platform. At present, the structure of the pile leg is mostly triangular truss type, and the main chord tube including the rack plate and the semicircular plate is arranged at the three corners, and the whole structure is connected by various support tubes. [0003] During the use of the jack-up platform, it is inevitable that the legs will be damaged and deformed due to operation, bad weather and other reaso...

AI Technical Summary

Problems solved by technology

In the prior art method, the entire pile leg is cut from the damaged or deformed part upwards, and the pile leg is remade into sections and then installed according to the new method. This method requires a long construction period in addition to the high cost. The use of

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