Semi submersible type under water construction flow blocking device

Abstract

The present invention relates to water flow blocking apparatus for semi-submersed underwater construction, and belongs to the field of marine engineering technology. The water flow blocking apparatus has a U-shaped hull with opening in the prow; four upright columns in the four corners of the opening; flow blocking plates connecting the upright columns; door hinged to the upright columns in the prow; and decks laid in the upper part of the apparatus and supported with the four upright columns. The present invention may be used to surround a steel pipe pile group of pier to form one job area with less water flow influence, and this can ensure the job stability in floating and semi-submersed operation. In addition, the present invention may be also applied in other places where less water flow influence on operation is needed.

Description

Technical field [0001] The invention relates to an underwater device used in the technical field of marine engineering, in particular to a semi-submersible underwater construction flow blocking device. Background technique [0002] The underwater construction baffle is a kind of water-retaining cofferdam structure. In the case of turbid water quality and rapid water flow in the construction water area, which is not conducive to the operation, the device can block the external water flow to form a work area with little water flow impact. [0003] Discovered prior art document retrieval, "Introduction to Civil Engineering" (Author: Jiang see whales, Ip Chi Ming editor, Press: Higher Education Press, Publication Date: July 2001 first edition) a book of 45,46,108 , 109, 202, and 203 mentioned a device called a "caisson". Its self-description reads: "A caisson is a well-shaped structure. It is used to excavate soil in the well and rely on its own weight to overcome the friction of the...

AI Technical Summary

Problems solved by technology

...The disadvantages of the caisson foundation are: the construction period is long; when fine sand and silt soil are pumped in the well, quicksand phenomenon is easy to occur, causing the caisson to tilt; Excessive inclination of the bottom rock surface will bring certain difficulties to the construction

"In addition to the "long construction period" described in the article; the phenomenon of quicksand is easy to occur when pumping water in the well for fine sand and silt soil, causing the caisson to tilt; Excessive inclination will bring certain difficulties to the construction” and other disadvantages, the caisson has a small application range and can only play a role in retaining water when it is built as a foundation and cannot be used to maintain completed underwater buildings (some The piers of some offshore bridges are supported by steel pipe piles, and sacrificial anodes (anti-corrosion zinc blocks) need to be laid for protection. The laying of anti-corrosion zinc blocks is welded to the steel pipe piles by divers underwater

Due to the turbid water quality and rapid current in the sea area where some offshore bridges are located, divers can work underwater for a short time, and it is difficult to ensure the welding progress of steel pile anti-corrosion zinc blocks), one-time use cannot be reused

Images