Concrete anticorrosive tooling construction method for splash zone of steel cylindrical bank protection structure

A construction method and technology of steel cylinders, which are applied in basic structure engineering, underwater structures, artificial islands, etc., can solve the problems of hidden safety hazards, corrosion, affecting the subsequent development and utilization of artificial islands, and achieve convenient installation, The effect of improving safety and reducing load

Active Publication Date: 2017-05-31
CHINA CONSTR SIXTH ENG DIV CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the position of the cylindrical revetment structure of the steel structure near the water surface (splash area) is easily caused by corrosion due to alternate contact with seawater and air.
The corrosion of the permanent steel revetment structure poses a great safety hazard to the operation of the entire artificial island
[0003] The measures such as heavy-duty anti-corrosion coatings and cathodic protection commonly used in the known field cannot meet the century-long long-term anti-corrosion requirements of steel structures in the splash zone in the sea. Therefore, there is currently no reliable method for effective anti-corrosion protection of steel revetment structures.
It is difficult to ensure that the permanent steel enclosure structure in the sea can achieve the designed service life, which seriously affects the subsequent development and utilization of artificial islands

Method used

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  • Concrete anticorrosive tooling construction method for splash zone of steel cylindrical bank protection structure
  • Concrete anticorrosive tooling construction method for splash zone of steel cylindrical bank protection structure
  • Concrete anticorrosive tooling construction method for splash zone of steel cylindrical bank protection structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Fix the shear connection structure on the outer wall of the splash area of ​​the steel cylindrical bank revetment structure with a tongue and groove structure, the distance between the top of the shear connection structure and the top of the revetment structure is 15cm, so The height of the shear connection structure described above is 4.8m;

[0040] (2) Weld the bottom mold support plate in the circumferential range of the revetment structure splash zone at the bottom of the shear connection structure at a predetermined distance;

[0041] (3) An arc-shaped fixed formwork is installed at the bottom of the shear connection structure, and a horizontally arranged arc-shaped bottom wall is welded at the bottom of the fixed formwork, and the bottom wall of the fixed formwork is connected to the outer wall of the revetment structure by welding and the fixed formwork The bottom wall and the support plate are welded and fixed, and the left and right side walls of the fixed ...

Embodiment 2

[0047] (1) Fix the shear connection structure on the outer wall of the splash area of ​​the steel cylindrical bank revetment structure with a tongue and groove structure, the distance between the top of the shear connection structure and the top of the revetment structure is 20cm, so The height of the shear connection structure described above is 5m;

[0048] (2) Weld the bottom mold support plate in the circumferential range of the revetment structure splash zone at the bottom of the shear connection structure at a predetermined distance;

[0049] (3) An arc-shaped fixed formwork is installed at the bottom of the shear connection structure, and a horizontally arranged arc-shaped bottom wall is welded at the bottom of the fixed formwork, and the bottom wall of the fixed formwork is connected to the outer wall of the revetment structure by welding and the fixed formwork The bottom wall and the support plate are welded and fixed, and the left and right side walls of the fixed fo...

Embodiment 3

[0055] (1) Fix the shear connection structure on the outer wall of the splash area of ​​the steel tubular bank revetment structure with a tongue and groove structure, the distance between the top of the shear connection structure and the top of the revetment structure is 18cm, so The height of the shear connection structure described above is 4.5m;

[0056] (2) Weld the bottom mold support plate in the circumferential range of the revetment structure splash zone at the bottom of the shear connection structure at a predetermined distance;

[0057] (3) An arc-shaped fixed formwork is installed at the bottom of the shear connection structure, and a horizontally arranged arc-shaped bottom wall is welded at the bottom of the fixed formwork, and the bottom wall of the fixed formwork is connected to the outer wall of the revetment structure by welding and the fixed formwork The bottom wall and the support plate are welded and fixed, and the left and right side walls of the fixed form...

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Abstract

The invention discloses a concrete anticorrosive tooling construction method for a splash zone of a steel cylindrical bank protection structure. The concrete anticorrosive tooling construction method comprises the following steps of fixing shear resistant connecting structures along the outer wall of the periphery range of the splash zone of the steel cylindrical bank protection structure with mortise structures; welding die block supporting plates in the periphery range of the splash zone of the steel cylindrical bank protection structure at the bottom of the sear resistant connecting structure at certain distance intervals; mounting arc-shaped fixed die plates at the lower parts of the shear resistant connecting structures; welding arc-shaped bottom walls which are horizontally arranged at the bottoms of the fixed die plates; hoisting the steel cylindrical bank protection structure in water; mounting watertight sealing strips on the front walls of the fixed die plates, the tops of left side walls and the tops a right side walls of the fixed die plates; extracting water in a cavity between the fixed die plates, a movable die plate and the bank protection structure; and then casting coated concrete in the cavity. Through the adoption of the concrete anticorrosive tooling construction method disclosed by the invention, the condition that the marine steel cylindrical bank protection structure can realize long-acting corrosion prevention in the using period can be guaranteed.

Description

technical field [0001] The invention relates to the field of offshore artificial island construction, in particular to a construction method for concrete anti-corrosion tooling in the splash area of ​​a steel cylindrical revetment structure. Background technique [0002] The steel cylindrical revetment structure is a new technology in the construction of offshore artificial islands. The structure has the characteristics of fast construction, factory manufacturing, and low impact on the environment. It is the key technology to realize the rapid construction of artificial islands. However, the position of the cylindrical revetment structure of the steel structure near the water surface (splash area) is very easy to cause corrosion due to alternate contact with seawater and air. The corrosion of the permanent steel revetment structure poses a great safety hazard to the operation of the entire artificial island. [0003] The measures such as heavy-duty anti-corrosion coatings ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B17/00
CPCE02B17/00E02B17/0008E02B17/0026
Inventor 周俊龙李洋刘强叶道海张纪亮苏光林赵红阳
Owner CHINA CONSTR SIXTH ENG DIV CORP
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