CN107119650B - Marine steel cylinder bank protection structure multiple-anticorrosion protects construction method - Google Patents
Marine steel cylinder bank protection structure multiple-anticorrosion protects construction method Download PDFInfo
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- CN107119650B CN107119650B CN201710256798.XA CN201710256798A CN107119650B CN 107119650 B CN107119650 B CN 107119650B CN 201710256798 A CN201710256798 A CN 201710256798A CN 107119650 B CN107119650 B CN 107119650B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B17/0017—Means for protecting offshore constructions
- E02B17/0026—Means for protecting offshore constructions against corrosion
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
- C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
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Abstract
The invention discloses marine steel cylinder bank protection structure multiple-anticorrosions to protect construction method, step are as follows: in process, anticorrosive paint is respectively coated in steel cylinder and steel pair especially wall and inner wall；Multiple steel cylinders and steel pair lattice are at sea connected as entirety；It fills on medium coarse sand to distance steel cylinder and steel pair lattice in each steel cylinder and steel pair lattice along certain distance；The concrete that binds is poured above medium coarse sand, pours sulphur-bonded mortar in concrete outer ring；More than design lowest stage, casting concrete on the coating of the steel cylinder of the high extra large side below of top mark and steel pair especially wall；Sacrificial anode block is respectively welded on the steel cylinder and steel pair especially wall of extra large side；In the steel cylinder of each land side and the top of steel pair especially wall reference electrode, welded cathode solder joint and zero-bit solder joint are installed respectively, anode bodies pre-packaged built in the extraction wire and anode well of reference electrode, zero-bit solder joint and cathode pads are connected.The long-effective corrosion effect of marine steel construction can be effectively played using this method.
Description
Technical field
The present invention relates to marine man-made island construction fields, and it is multiple anti-to relate in particular to a kind of marine steel cylinder bank protection structure
Rotten guard method.
Background technique
Using steel cylinder as bank protection structure, being formed after shore protection and carrying out the internal island Tian Haizao again is in marine man-made island construction
Emerging technology.The construction method has the characteristics that quick construction, batch production manufacture, effect on environment are small.Currently known field
In, used steel cylinder bank protection structure is temporary structure, and steel cylinder shore protection no longer plays the role of going along with sb. to guard him after at island, because
This does not carry out excessively high requirement to the service life of the structure.But if steel cylinder bank protection structure is made as permanent structure
With, then require service life up to a century, this has high requirement for the surface anticorrosion of steel cylinder bank protection structure.
Steel cylinder bank protection structure includes the steel cylinder shore protection with steel pair lattice, and the structure of the steel cylinder and steel pair lattice can
To use existing structure, as the Chinese patent of Publication No. CN103397650 discloses " a kind of large-scale steel cylinder cofferdam structure "
Disclosed structure.The front side of the steel cylinder shore protection is extra large side (being seawater outside the side, i.e., be extra large side with contact with sea water side), rear side
For land side (backfilling sandstone region in the island Ce Wei), wave screening structure, wave screening structure are equipped in the back filled region of steel cylinder land side suitable for reading
Existing structure can be used, as disclosed in the Chinese patent of Publication No. CN201040840 " hydrophilic wave-eliminating breakwater with grid-type structure "
Disclosed structure.Anode well is set in steel cylinder land side, existing structure, such as Publication No. can be used in anode well construction
The Chinese patent of CN203769728U discloses structure disclosed in " a kind of oil field clump formula can Drawing-Core anode well ".Steel cylinder and steel
Secondary lattice structure upstream face Underwater Welding sacrificial anode, sacrificial anode can use existing structure, such as Publication No.
" a kind of connection structure of improved ballast tank sacrificial anode and hull " disclosed in the Chinese patent of " CN204775899U " is open
Structure.
In currently known field, painting anticorrosion coating is mostly used to the anti-corrosion protection method of marine steel construction or carries out cathode
Protection.But single safeguard measure not can guarantee marine steel construction, and (area Ru Nixia, wave splash especially same component different location
Area, atmospheric region, back filled region etc.) requirement for anticorrosion, this constitutes very big security risk to permanent steel cylinder bank protection structure.
Summary of the invention
It is an object of the invention to overcome the shortcomings of prior art, providing one kind can effectively inhibit marine steel cylinder to become rusty
Erosion guarantees that the marine steel cylinder bank protection structure multiple-anticorrosion of structure a century service life protects construction method.
In order to achieve the above objectives, the present invention adopts the following technical solutions:
Marine steel cylinder bank protection structure multiple-anticorrosion of the invention protects construction method, comprising the following steps:
(1) during processing the steel cylinder and steel pair lattice of steel cylinder bank protection structure, steel cylinder and steel pair especially wall with
And inner wall is respectively coated anticorrosive paint, the steel cylinder of the steel cylinder of extra large side and anticorrosive paint thickness on steel pair especially wall than land side
And the anticorrosive paint thickness on the anticorrosive paint thickness and steel cylinder and steel pair lattice inner wall on the outer wall of steel pair lattice is thick；
(2) multiple steel cylinders and steel pair lattice are at sea connected as to overall structure steel cylinder bank protection structure according to design requirement
System；
(3) it fills on medium coarse sand to distance steel cylinder and steel pair lattice in each steel cylinder and steel pair lattice along a spacing
From；
(4) in distance steel cylinder and steel pair lattice inner wall 30-50cm respectively, and from medium coarse sand to steel cylinder and steel pair lattice
Template is respectively set at the range boundary on upper edge, the concrete that binds, coagulation to be bound are poured in the enclosure space that template surrounds
Soil reaches form removal after design strength；
(5) poured in the gap bound between concrete and steel cylinder and steel pair lattice inner wall sulphur-bonded mortar to bind it is mixed
Solidifying soil and steel cylinder, steel pair lattice inner wall are closely coupled, and the sulphur-bonded mortar is along steel cylinder inner wall structure annular in shape and along steel pair
Lattice inner wall is in fan annular；
(6) after sulphur-bonded mortar reaches design strength, bind concrete and the sulphur at the top of steel cylinder and steel pair lattice are utilized
Mortar is as operation platform, more than design lowest stage, the high extra large steel cylinder of side below of top mark and the coating of steel pair especially wall
Upper casting concrete keeps the outer wall of concrete and steel cylinder and steel pair lattice closely coupled, the concrete with a thickness of 25-
30cm；
(7) using lifting on ship, the construction method of Underwater Welding, below the concrete, above the absolute altitude of mud face between
Extra large side each steel cylinder and steel pair especially wall on sacrificial anode block is respectively welded；
(8) bracket is respectively welded in the steel cylinder of each land side and the top of steel pair especially wall, in the bracket
Then upper coating anticorrosive paint installs reference electrode on the bracket described in each respectively, while round with steel above bracket
Welded cathode solder joint and zero-bit solder joint between cylinder or the upper edge of steel pair lattice, the thickness of the anticorrosive paint on the bracket and land
Anticorrosive paint consistency of thickness on the steel cylinder of side and the outer wall of steel pair lattice；
(9) two cable ducts are excavated on the island on rear side of wave screening structure, and electricity is respectively set in two cable ducts
Cable framed bent；Between two cable ducts between construction potentiostat and in the interior installation potentiostat of potentiostat；In Article 2 electricity
Anode well is excavated on island on rear side of cable ditch and in anode bodies pre-packaged built in anode well；
(10) extraction wire of reference electrode, zero-bit solder joint and cathode pads cable sleeve is each passed through to guide upwards,
It is then passed through wave screening structure, then potentiostat is connected after the cable framed bent laying of first cable duct, is drawn from potentiostat
Cable along Article 2 cable duct cable framed bent lay, then introduce anode well connect with built-in pre-packaged anode bodies.
The beneficial effects of the present invention are:
(1) marine steel cylinder bank protection structure multiple-anticorrosion safeguard measure uses a variety of methods, from different perspectives to marine steel
Cylinder bank protection structure is protected, and can be effectively played the long-effective corrosion effect of marine steel construction, be realized the century-old construction service life
Design requirement；
(2) marine steel cylinder bank protection structure multiple-anticorrosion safeguard measure can be in the premise for not influencing steel cylinder construction progress
Under, guarantee effective installation of every anti-corrosion measure；
(3) corrosion-inhibiting coating used in steel cylinder and steel pair lattice structure can effectively ensure that steel cylinder and steel pair lattice structure exist
Anti-corrosion in transport, installation process, and can guarantee in the construction process and run early period to the effective protection of steel construction；
(4) because steel cylinder and the corrosion of steel pair lattice structure sea side are than land side seriously corroded, therefore the coating of the extra large side used
Layer both can guarantee steel cylinder shore protection knot with a thickness of 1.5 times with the coating layer thickness of land side on the inside of steel cylinder and steel pair lattice structure
Effective anti-corrosion of structure, moreover it is possible to accomplish the saving of material to greatest extent；
(5) steel cylinder and steel pair lattice top setting sulphur-bonded mortar the outside for the concrete structure that binds structure type,
The waterproof requirement of concrete structure can be effectively ensured, reduce the corrosion probability of steel cylinder and steel pair lattice inner wall；
(6) setting cladding concrete structure can effectively prevent steel cylinder and steel pair on the outside of steel cylinder and steel pair lattice structure
The corrosion of lattice structure splash zone, substantially extends integrally-built service life；
(7) sacrificial anode is set in steel cylinder and steel pair lattice structure sea side, the conductive characteristic of seawater can be utilized, based on electricity
The principles of chemistry effectively reduce the corrosion of extra large side structure；
(8) anode well is set in steel cylinder and steel pair lattice land side, can effectively ensure that on the inside of steel cylinder and steel pair lattice structure
With the supply of the electronics of land side, prevent steel construction from corroding because of betatopic；
(9) Classified Order is set in cable duct, can guarantee that the classification of subsequent cable is set up, prevent different cables
Between interference, for it is subsequent maintenance provide conveniently；
(10) it after at island, to be embedded in for a long time in the sandstone of land side in the bracket of steel cylinder land side setting reference electrode, therefore
Using and the same requirement for anticorrosion of steel cylinder and steel pair lattice land side, can effectively avoid the corrosion of bracket, play long-acting support
Effect.
Detailed description of the invention
Fig. 1 is the top view that structure is protected using the marine steel cylinder bank protection structure multiple-anticorrosion of the method for the present invention；
Fig. 2 is the side view that structure is protected using the marine steel cylinder bank protection structure multiple-anticorrosion of the method for the present invention；
Fig. 3 is the front view that structure is protected using the marine steel cylinder bank protection structure multiple-anticorrosion of the method for the present invention.
Specific embodiment
The present invention is described in detail in the following with reference to the drawings and specific embodiments.
Marine steel cylinder bank protection structure multiple-anticorrosion of the invention protects construction method, comprising the following steps:
(1) during processing steel cylinder 1 and steel pair lattice 2 of steel cylinder bank protection structure, outside steel cylinder 1 and steel pair lattice 2
Anticorrosive paint is respectively coated in wall and inner wall；Anticorrosive paint thickness on 2 outer wall of steel cylinder 1 and steel pair lattice of extra large side is than land side
Anticorrosive paint on anticorrosive paint thickness and steel cylinder 1 and 2 inner wall of steel pair lattice on the outer wall of steel cylinder 1 and steel pair lattice 2 is thick
Degree is thick, and the anticorrosive paint thickness on 2 outer wall of steel cylinder 1 and steel pair lattice of preferred sea side is the steel cylinder 1 and steel pair lattice 2 of land side
1.5 times of anticorrosive paint thickness on anticorrosive paint thickness and steel cylinder 1 and 2 inner wall of steel pair lattice on outer wall can guarantee to prevent
Coating dosage is saved while detritus amount to greatest extent.
(2) multiple steel cylinders 1 and steel pair lattice 2 are at sea connected as to overall structure steel cylinder shore protection knot according to design requirement
Structure system；
(3) it fills on medium coarse sand to distance steel cylinder 1 and steel pair lattice 2 in each steel cylinder 1 and steel pair lattice 2 along certain
Distance can be 0.5-2m, preferably 2m；
(4) in distance steel cylinder 1 and 2 inner wall 30-50cm of steel pair lattice respectively, and from medium coarse sand to steel cylinder 1 and steel
Template is respectively set at the range boundary on edge on secondary lattice 2, the concrete 4 that binds is poured in the enclosure space that template surrounds, wait seal
Top concrete 4 reaches form removal after design strength；
(5) sulphur-bonded mortar 3 is poured in the gap bound between concrete 4 and steel cylinder 1 and 2 inner wall of steel pair lattice to seal
Push up concrete 4 and steel cylinder 1, steel pair 2 inner walls of lattice it is closely coupled, the sulphur-bonded mortar 3 along 1 inner wall of steel cylinder structure annular in shape simultaneously
And along steel pair lattice inner wall in fan annular；
(6) after sulphur-bonded mortar 3 reaches design strength, 4 He of concrete of binding at 2 top of steel cylinder 1 and steel pair lattice is utilized
Sulphur-bonded mortar 3 is used as operation platform, more than design lowest stage, 2 outer wall of steel cylinder 1 and steel pair lattice of the high extra large side below of top mark
Coating on casting concrete 5 keep concrete 5 and the outer wall of steel cylinder 1 and steel pair lattice 2 closely coupled；The concrete 5
With a thickness of 25-30cm, it can be effectively prevent erosion of the chloride ion to 1 surface of steel cylinder in seawater, while preventing blocked up concrete
Protective layer causes unbalance loading to 1 structure of steel cylinder.
(7) using lifting on ship, the construction method of Underwater Welding, below the concrete 5, above the absolute altitude of mud face between
Extra large side 2 outer wall of each steel cylinder 1 and steel pair lattice on sacrificial anode block 6 is respectively welded；
(8) bracket 11 is respectively welded on the top of 2 outer wall of steel cylinder 1 and steel pair lattice of each land side, described
Anticorrosive paint is coated on bracket 11, reference electrode is then installed respectively on the bracket 11 described in each, while in bracket 11
Equal welded cathode solder joint 17 and zero-bit solder joint 16 between the upper edge of top and steel cylinder 1 or steel pair lattice, on the bracket 11
Anticorrosive paint consistency of thickness on the outer wall of the thickness of anticorrosive paint and the steel cylinder 1 of land side and steel pair lattice 2；
(9) two cable ducts 8-1,8-2 are excavated on the island of the rear side of wave screening structure 13, two cable duct 8-1,
Cable framed bent is respectively set in 8-2, so that subsequent cable can classify placement；It is built between two cable ducts 8-1 and 8-2
9 and in the interior installation potentiostat of potentiostat between potentiostat；Anode well is excavated on the island on rear side of Article 2 cable duct 8-2
10 and in anode bodies pre-packaged built in anode well 10；
(10) by the extraction wire of reference electrode 7, zero-bit solder joint 16 and cathode pads 17 be each passed through cable sleeve 12 to
Upper guiding is then passed through wave screening structure 13, then connects potentiostat after the cable framed bent laying of first cable duct 8-1, from
Potentiostat draw cable along Article 2 cable duct 8-2 cable framed bent lay, then introduce anode well 10 with it is built-in pre-
Pack anode bodies connection.
Embodiment 1
(1) during processing steel cylinder 1 and steel pair lattice 2 of steel cylinder bank protection structure, outside steel cylinder 1 and steel pair lattice 2
Anticorrosive paint is respectively coated in wall and inner wall；Anticorrosive paint thickness on 2 outer wall of steel cylinder 1 and steel pair lattice of extra large side is land side
Anticorrosive paint thickness on 2 inner wall of anticorrosive paint thickness and steel cylinder 1 and steel pair lattice on 2 outer wall of steel cylinder 1 and steel pair lattice
1.5 again；
(2) multiple steel cylinders 1 and steel pair lattice 2 are at sea connected as to overall structure steel cylinder shore protection knot according to design requirement
Structure system；
(3) it fills on medium coarse sand to distance steel cylinder 1 and steel pair lattice 2 in each steel cylinder 1 and steel pair lattice 2 along 2m；
(4) in distance steel cylinder 1 and 2 inner wall 30cm of steel pair lattice respectively, and from medium coarse sand to steel cylinder 1 and steel pair lattice
Template is respectively set at the range boundary on edge on 2, the concrete 4 that binds is poured in the enclosure space that template surrounds, it is mixed wait bind
Solidifying soil 4 reaches form removal after design strength；
(5) sulphur-bonded mortar 3 is poured in the gap bound between concrete 4 and steel cylinder 1 and 2 inner wall of steel pair lattice to seal
Push up concrete 4 and steel cylinder 1, steel pair 2 inner walls of lattice it is closely coupled, the sulphur-bonded mortar 3 along 1 inner wall of steel cylinder structure annular in shape simultaneously
And along steel pair lattice inner wall in fan annular；
(6) after sulphur-bonded mortar 3 reaches design strength, 4 He of concrete of binding at 2 top of steel cylinder 1 and steel pair lattice is utilized
Sulphur-bonded mortar 3 is used as operation platform, more than design lowest stage, 2 outer wall of steel cylinder 1 and steel pair lattice of the high extra large side below of top mark
Coating on casting concrete 5 keep concrete 5 and the outer wall of steel cylinder 1 and steel pair lattice 2 closely coupled；The concrete 5
With a thickness of 25cm；
(7) using lifting on ship, the construction method of Underwater Welding, below the concrete 5, above the absolute altitude of mud face between
Extra large side 2 outer wall of each steel cylinder 1 and steel pair lattice on sacrificial anode block 6 is respectively welded；
(8) bracket 11 is respectively welded on the top of 2 outer wall of steel cylinder 1 and steel pair lattice of each land side, described
Anticorrosive paint is coated on bracket 11, reference electrode is then installed respectively on the bracket 11 described in each, while in bracket 11
Equal welded cathode solder joint 17 and zero-bit solder joint 16 between the upper edge of top and steel cylinder 1 or steel pair lattice, on the bracket 11
Anticorrosive paint consistency of thickness on the outer wall of the thickness of anticorrosive paint and the steel cylinder 1 of land side and steel pair lattice 2；
(9) two cable ducts 8-1,8-2 are excavated on the island of the rear side of wave screening structure 13, two cable duct 8-1,
Cable framed bent is respectively set in 8-2, so that subsequent cable can classify placement；It is built between two cable ducts 8-1 and 8-2
9 and in the interior installation potentiostat of potentiostat between potentiostat；Anode well is excavated on the island on rear side of Article 2 cable duct 8-2
10 and in anode bodies pre-packaged built in anode well 10；
(10) by the extraction wire of reference electrode 7, zero-bit solder joint 16 and cathode pads 17 be each passed through cable sleeve 12 to
Upper guiding is then passed through wave screening structure 13, then connects potentiostat after the cable framed bent laying of first cable duct 8-1, from
Potentiostat draw cable along Article 2 cable duct 8-2 cable framed bent lay, then introduce anode well 10 with it is built-in pre-
Pack anode bodies connection.
After tested, multiple-anticorrosion effect can guarantee the long-effective corrosion of steel cylinder bank protection structure.
Embodiment 2
(1) during processing steel cylinder 1 and steel pair lattice 2 of steel cylinder bank protection structure, outside steel cylinder 1 and steel pair lattice 2
Anticorrosive paint is respectively coated in wall and inner wall；Anticorrosive paint thickness on 2 outer wall of steel cylinder 1 and steel pair lattice of extra large side is land side
Anticorrosive paint thickness on 2 inner wall of anticorrosive paint thickness and steel cylinder 1 and steel pair lattice on 2 outer wall of steel cylinder 1 and steel pair lattice
1.5 again；
(2) multiple steel cylinders 1 and steel pair lattice 2 are at sea connected as to overall structure steel cylinder shore protection knot according to design requirement
Structure system；
(3) edge on medium coarse sand to distance steel cylinder 1 and steel pair lattice 2 is filled in each steel cylinder 1 and steel pair lattice 2
1.5m；
(4) in distance steel cylinder 1 and 2 inner wall 50cm of steel pair lattice respectively, and from medium coarse sand to steel cylinder 1 and steel pair lattice
Template is respectively set at the range boundary on edge on 2, the concrete 4 that binds is poured in the enclosure space that template surrounds, it is mixed wait bind
Solidifying soil 4 reaches form removal after design strength；
(5) sulphur-bonded mortar 3 is poured in the gap bound between concrete 4 and steel cylinder 1 and 2 inner wall of steel pair lattice to seal
Push up concrete 4 and steel cylinder 1, steel pair 2 inner walls of lattice it is closely coupled, the sulphur-bonded mortar 3 along 1 inner wall of steel cylinder structure annular in shape simultaneously
And along steel pair lattice inner wall in fan annular；
(6) after sulphur-bonded mortar 3 reaches design strength, 4 He of concrete of binding at 2 top of steel cylinder 1 and steel pair lattice is utilized
Sulphur-bonded mortar 3 is used as operation platform, more than design lowest stage, 2 outer wall of steel cylinder 1 and steel pair lattice of the high extra large side below of top mark
Coating on casting concrete 5 keep concrete 5 and the outer wall of steel cylinder 1 and steel pair lattice 2 closely coupled；The concrete 5
With a thickness of 30cm；
(7) using lifting on ship, the construction method of Underwater Welding, below the concrete 5, above the absolute altitude of mud face between
Extra large side 2 outer wall of each steel cylinder 1 and steel pair lattice on sacrificial anode block 6 is respectively welded；
(8) bracket 11 is respectively welded on the top of 2 outer wall of steel cylinder 1 and steel pair lattice of each land side, described
Anticorrosive paint is coated on bracket 11, reference electrode is then installed respectively on the bracket 11 described in each, while in bracket 11
Equal welded cathode solder joint 17 and zero-bit solder joint 16 between the upper edge of top and steel cylinder 1 or steel pair lattice, on the bracket 11
Anticorrosive paint consistency of thickness on the outer wall of the thickness of anticorrosive paint and the steel cylinder 1 of land side and steel pair lattice 2；
(9) two cable ducts 8-1,8-2 are excavated on the island of the rear side of wave screening structure 13, two cable duct 8-1,
Cable framed bent is respectively set in 8-2, so that subsequent cable can classify placement；It is built between two cable ducts 8-1 and 8-2
9 and in the interior installation potentiostat of potentiostat between potentiostat；Anode well is excavated on the island on rear side of Article 2 cable duct 8-2
10 and in anode bodies pre-packaged built in anode well 10；
(10) by the extraction wire of reference electrode 7, zero-bit solder joint 16 and cathode pads 17 be each passed through cable sleeve 12 to
Upper guiding is then passed through wave screening structure 13, then connects potentiostat after the cable framed bent laying of first cable duct 8-1, from
Potentiostat draw cable along Article 2 cable duct 8-2 cable framed bent lay, then introduce anode well 10 with it is built-in pre-
Pack anode bodies connection.
After tested, multiple-anticorrosion effect can guarantee the long-effective corrosion of steel cylinder bank protection structure.
Embodiment 3
(1) during processing steel cylinder 1 and steel pair lattice 2 of steel cylinder bank protection structure, outside steel cylinder 1 and steel pair lattice 2
Anticorrosive paint is respectively coated in wall and inner wall；Anticorrosive paint thickness on 2 outer wall of steel cylinder 1 and steel pair lattice of extra large side is land side
Anticorrosive paint thickness on 2 inner wall of anticorrosive paint thickness and steel cylinder 1 and steel pair lattice on 2 outer wall of steel cylinder 1 and steel pair lattice
1.5 again；
(2) multiple steel cylinders 1 and steel pair lattice 2 are at sea connected as to overall structure steel cylinder shore protection knot according to design requirement
Structure system；
(3) it fills on medium coarse sand to distance steel cylinder 1 and steel pair lattice 2 in each steel cylinder 1 and steel pair lattice 2 along 2m；
(4) in distance steel cylinder 1 and 2 inner wall 40cm of steel pair lattice respectively, and from medium coarse sand to steel cylinder 1 and steel pair lattice
Template is respectively set at the range boundary on edge on 2, the concrete 4 that binds is poured in the enclosure space that template surrounds, it is mixed wait bind
Solidifying soil 4 reaches form removal after design strength；
(5) sulphur-bonded mortar 3 is poured in the gap bound between concrete 4 and steel cylinder 1 and 2 inner wall of steel pair lattice to seal
Push up concrete 4 and steel cylinder 1, steel pair 2 inner walls of lattice it is closely coupled, the sulphur-bonded mortar 3 along 1 inner wall of steel cylinder structure annular in shape simultaneously
And along steel pair lattice inner wall in fan annular；
(6) after sulphur-bonded mortar 3 reaches design strength, 4 He of concrete of binding at 2 top of steel cylinder 1 and steel pair lattice is utilized
Sulphur-bonded mortar 3 is used as operation platform, more than design lowest stage, 2 outer wall of steel cylinder 1 and steel pair lattice of the high extra large side below of top mark
Coating on casting concrete 5 keep concrete 5 and the outer wall of steel cylinder 1 and steel pair lattice 2 closely coupled；The concrete 5
With a thickness of 28cm；
(7) using lifting on ship, the construction method of Underwater Welding, below the concrete 5, above the absolute altitude of mud face between
Extra large side 2 outer wall of each steel cylinder 1 and steel pair lattice on sacrificial anode block 6 is respectively welded；
(8) bracket 11 is respectively welded on the top of 2 outer wall of steel cylinder 1 and steel pair lattice of each land side, described
Anticorrosive paint is coated on bracket 11, reference electrode is then installed respectively on the bracket 11 described in each, while in bracket 11
Equal welded cathode solder joint 17 and zero-bit solder joint 16 between the upper edge of top and steel cylinder 1 or steel pair lattice, on the bracket 11
Anticorrosive paint consistency of thickness on the outer wall of the thickness of anticorrosive paint and the steel cylinder 1 of land side and steel pair lattice 2；
(9) two cable ducts 8-1,8-2 are excavated on the island of the rear side of wave screening structure 13, two cable duct 8-1,
Cable framed bent is respectively set in 8-2, so that subsequent cable can classify placement；It is built between two cable ducts 8-1 and 8-2
9 and in the interior installation potentiostat of potentiostat between potentiostat；Anode well is excavated on the island on rear side of Article 2 cable duct 8-2
10 and in anode bodies pre-packaged built in anode well 10；
(10) by the extraction wire of reference electrode 7, zero-bit solder joint 16 and cathode pads 17 be each passed through cable sleeve 12 to
Upper guiding is then passed through wave screening structure 13, then connects potentiostat after the cable framed bent laying of first cable duct 8-1, from
Potentiostat draw cable along Article 2 cable duct 8-2 cable framed bent lay, then introduce anode well 10 with it is built-in pre-
Pack anode bodies connection.
After tested, multiple-anticorrosion effect can guarantee the long-effective corrosion of steel cylinder bank protection structure.
Claims (2)
1. marine steel cylinder bank protection structure multiple-anticorrosion protects construction method, it is characterised in that the following steps are included:
(1) during processing the steel cylinder and steel pair lattice of steel cylinder bank protection structure, in steel cylinder and steel pair especially wall and interior
Wall is respectively coated anticorrosive paint, the steel cylinder and steel of the steel cylinder of extra large side and anticorrosive paint thickness on steel pair especially wall than land side
Anticorrosive paint thickness on anticorrosive paint thickness and steel cylinder and steel pair lattice inner wall on the outer wall of secondary lattice is thick；
(2) multiple steel cylinders and steel pair lattice are at sea connected as to overall structure steel cylinder bank protection structure according to design requirement
System；
(3) it fills on medium coarse sand to distance steel cylinder and steel pair lattice in each steel cylinder and steel pair lattice along certain distance；
(4) in distance steel cylinder and steel pair lattice inner wall 30-50cm, and edge on from medium coarse sand to steel cylinder and steel pair lattice respectively
Range boundary at template is respectively set, the concrete that binds is poured in the enclosure space that template surrounds, concrete to be bound reaches
Form removal after to design strength；
(5) sulphur-bonded mortar is poured in the gap bound between concrete and steel cylinder and steel pair lattice inner wall make the concrete that binds
Closely coupled with steel cylinder, steel pair lattice inner wall, the sulphur-bonded mortar is along steel cylinder inner wall structure annular in shape and along steel pair lattice
Wall is in fan annular；
(6) after sulphur-bonded mortar reaches design strength, bind concrete and the sulphur-bonded mortar at the top of steel cylinder and steel pair lattice are utilized
As operation platform, poured more than design lowest stage, on the coating of the steel cylinder of the high extra large side below of top mark and steel pair especially wall
Building concrete keeps the outer wall of concrete and steel cylinder and steel pair lattice closely coupled, the concrete with a thickness of 25-30cm；
(6) using lifting on ship, the construction method of Underwater Welding, below the concrete, above the absolute altitude of mud face between sea
Sacrificial anode block is respectively welded on each steel cylinder and steel pair especially wall of side；
(7) bracket is respectively welded on the top of the outer wall of each steel cylinder and steel pair lattice land side, is applied on the bracket
Cover anticorrosive paint, reference electrode be then installed respectively on the bracket described in each, at the same above bracket with steel cylinder or
Equal welded cathode solder joint and zero-bit solder joint between the upper edge of steel pair lattice, the thickness of the anticorrosive paint on the bracket and land side
Anticorrosive paint consistency of thickness on the outer wall of steel cylinder and steel pair lattice；
(8) wave screening structure is set on the man-made island of steel cylinder bank protection structure land side direction backfill, the island on rear side of wave screening structure
Two cable ducts of upper excavation, are respectively set cable framed bent in two cable ducts；It is built between two cable ducts permanent
Between potentiometer and in the interior installation potentiostat of potentiostat；On the island on rear side of Article 2 cable duct excavate anode well and
Pre-packaged anode bodies built in anode well；
(9) extraction wire of reference electrode, zero-bit solder joint and cathode pads is each passed through cable sleeve to guide upwards, is then passed through
Then wave screening structure connects potentiostat after the cable framed bent laying of first cable duct, the cable drawn from potentiostat
Line is laid along the cable framed bent of Article 2 cable duct, is then introduced anode well and is connect with built-in pre-packaged anode bodies.
2. marine steel cylinder bank protection structure multiple-anticorrosion according to claim 1 protects construction method, it is characterised in that:
Along 2m on filling medium coarse sand to distance steel cylinder and steel pair lattice in each steel cylinder and steel pair lattice.
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Application publication date: 20170901 Assignee: CHINA STATE CONSTRUCTION BRIDGE Corp.,Ltd. Assignor: CHINA CONSTRUCTION SIXTH ENGINEERING DIVISION Corp.,Ltd. Contract record no.: X2022120000032 Denomination of invention: Construction method of multiple anti-corrosion protection for offshore steel cylinder revetment structure Granted publication date: 20190118 License type: Common License Record date: 20220628 |