CN107119650A - 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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- CN107119650A CN107119650A CN201710256798.XA CN201710256798A CN107119650A CN 107119650 A CN107119650 A CN 107119650A CN 201710256798 A CN201710256798 A CN 201710256798A CN 107119650 A CN107119650 A CN 107119650A
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- steel
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- concrete
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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
-
- 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
Abstract
Construction method is protected the invention discloses marine steel cylinder bank protection structure multiple-anticorrosion, step is：In process, anticorrosive paint is respectively coated in steel cylinder and the secondary especially wall and inwall of steel；Multiple steel cylinders and the secondary lattice of steel are at sea connected as entirety；Along certain distance on filling medium coarse sand to distance steel cylinder and the secondary lattice of steel in each steel cylinder and the secondary lattice of steel；The concrete that binds is poured above medium coarse sand, sulphur-bonded mortar is poured in concrete outer ring；Casting concrete on the secondary especially coating of wall of steel cylinder and steel of extra large side more than design lowest stage, below top mark height；Sacrificial anode block is respectively welded on the secondary especially wall of steel cylinder and steel of extra large side；The top of the secondary especially wall of steel cylinder and steel in each land side is respectively mounted reference electrode, welded cathode solder joint and zero-bit solder joint, and pre-packaged anode bodies 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 field, a kind of marine steel cylinder bank protection structure is related in particular to multiple anti-
Rotten guard method.
Background technology
Using steel cylinder as bank protection structure, it is during marine man-made island is constructed to be formed and carry out internal Tian Haizao islands after shore protection again
Emerging technology.The features such as construction method has quick construction, batch production manufacture, effect on environment is small.Currently known field
In, the steel cylinder bank protection structure used is temporary structure, and the effect of going along with sb. to guard him no longer is being played into steel cylinder shore protection after island, because
This does not carry out too 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.
The structure of steel cylinder shore protection of the steel cylinder bank protection structure including carrying the secondary lattice of steel, described steel cylinder and the secondary lattice of steel can
To use existing structure, such as Publication No. CN103397650 Chinese patent is disclosed " 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 Ce Wei islands), wave screening structure, wave screening structure are provided with the back filled region of steel cylinder land side suitable for reading
Existing structure can be used, as disclosed in Publication No. CN201040840 Chinese patent " hydrophilic wave-eliminating breakwater with grid-type structure "
Disclosed structure.Anode well is set in steel cylinder land side, and anode well construction can use existing structure, such as Publication No.
CN203769728U Chinese patent 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 attachment structure of improved ballast tank sacrificial anode and hull " disclosed in the Chinese patent of " CN204775899U " is open
Structure.
In currently known field, to using painting anticorrosion coating or carrying out negative electrode more than the anti-corrosion protection method of marine steel construction
Protection.But single safeguard measure can not ensure marine steel construction, (Ru Nixia areas, wave splash especially same component diverse location
Area, atmospheric region, back filled region etc.) requirement for anticorrosion, this constitutes very big potential safety hazard to permanent steel cylinder bank protection structure.
The content of the invention
It is an object of the invention to overcome the shortcomings of that prior art can effectively suppress marine steel cylinder there is provided one kind to become rusty
Erosion, it is ensured that the marine steel cylinder bank protection structure multiple-anticorrosion protection construction method of structure a century service life.
To reach above-mentioned purpose, the present invention uses following technical proposals：
The marine steel cylinder bank protection structure multiple-anticorrosion protection construction method of the present invention, comprises the following steps：
(1) during the steel cylinder and the secondary lattice of steel of processing steel cylinder bank protection structure, steel cylinder and the secondary especially wall of steel with
And the steel cylinder of the anticorrosive paint thickness ratio land side on anticorrosive paint, the secondary especially wall of steel cylinder and steel of extra large side is respectively coated in inwall
And the anticorrosive paint thickness on the anticorrosive paint thickness and steel cylinder and the secondary lattice inwall of steel on the outer wall of the secondary lattice of steel is thick；
(2) multiple steel cylinders and the secondary lattice of steel are at sea connected as being monolithically fabricated steel cylinder bank protection structure according to design requirement
System；
(3) medium coarse sand is filled in each steel cylinder and the secondary lattice of steel to distance steel cylinder and the secondary lattice of steel along a spacing
From；
(4) in distance steel cylinder respectively and the secondary lattice inwall 30-50cm of steel, and from medium coarse sand to steel cylinder and the secondary lattice of steel
Template is set respectively at the range boundary on upper edge, the concrete that binds, coagulation to be bound are poured in the closing space that template is surrounded
Soil reaches form removal after design strength；
(5) sulphur-bonded mortar is poured so that binding mixed in the space bound between concrete and the secondary lattice inwall of steel cylinder and steel
The solidifying secondary lattice inwall of soil and steel cylinder, steel is closely coupled, and the sulphur-bonded mortar is along steel cylinder inner wall structure annular in shape and along steel pair
Lattice inwall is in fan annular；
(6) after sulphur-bonded mortar reaches design strength, bind concrete and the sulphur at the top of steel cylinder and the secondary lattice of steel are utilized
Mortar is as operation platform, the coating of the secondary especially wall of steel cylinder and steel of the extra large side more than design lowest stage, below top mark height
Upper casting concrete makes the outer wall of concrete and steel cylinder and the secondary lattice of steel closely coupled, and the thickness of described concrete is 25-
30cm；
(7) using lifting, the construction method of Underwater Welding on ship, below the concrete, above the absolute altitude of mud face between
Extra large side each steel cylinder and the secondary especially wall of steel on sacrificial anode block is respectively welded；
(8) support is respectively welded in the top of the secondary especially wall of steel cylinder and steel in each land side, in described support
Upper coating anticorrosive paint, is then respectively mounted reference electrode on the support described in each, while justifying above support with steel
The thickness of anticorrosive paint between the upper edge of cylinder or the secondary lattice of steel on equal welded cathode solder joint and zero-bit solder joint, described support and land
Anticorrosive paint consistency of thickness on the outer wall of the secondary lattice of the steel cylinder and steel of side；
(9) two cable ducts are excavated on the island on rear side of wave screening structure, electricity is set respectively in two described cable ducts
Cable framed bent；Potentiostat is installed between two cable ducts between construction potentiostat and in potentiostat；In Article 2 electricity
Anode well is excavated on island on rear side of cable ditch and in pre-packaged anode bodies built in anode well；
(10) extraction wire of reference electrode, zero-bit solder joint and cathode pads is each passed through into cable sleeve to guide upwards,
Wave screening structure is then passed through, potentiostat is connected after then being laid along the cable framed bent of first cable duct, is drawn from potentiostat
Cable framed bent of the cable along Article 2 cable duct lay, then introduce anode well and be connected with built-in pre-packaged anode bodies.
The beneficial effects of the invention are as follows：
(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 life-span
Design requirement；
(2) marine steel cylinder bank protection structure multiple-anticorrosion safeguard measure can not influence the premise of steel cylinder construction progress
Under, it is ensured that effective installation of every anti-corrosion measure；
(3) corrosion-inhibiting coating used in the secondary lattice structure of steel cylinder and steel can effectively ensure that steel cylinder and the secondary lattice structure of steel exist
Anti-corrosion in transport, installation process, and can guarantee that in work progress and run effective protection of the early stage to steel construction；
(4) because steel cylinder and the extra large side corrosion of the secondary lattice structure of steel are than land side seriously corroded, therefore the application of the extra large side used
Thickness degree is 1.5 times with the coating layer thickness of land side on the inside of steel cylinder and the secondary lattice structure of steel, both can guarantee that steel cylinder shore protection knot
Effective anti-corrosion of structure, moreover it is possible to accomplish the saving of material to greatest extent；
(5) sulphur-bonded mortar is set in the structure type in the outside for the concrete structure that binds in steel cylinder and steel secondary lattice top,
The waterproof requirement of concrete structure can be effectively ensured, reduces the corrosion probability of steel cylinder and the secondary lattice inwall of steel；
(6) cladding concrete structure is set effectively to prevent steel cylinder and steel pair on the outside of steel cylinder and the secondary lattice structure of steel
The corrosion of lattice structure splash zone, significantly extends integrally-built service life；
(7) sacrificial anode is set in steel cylinder and the secondary lattice structure of steel extra large 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 secondary lattice land side, can effectively ensure that on the inside of steel cylinder and the secondary lattice structure of steel
With the supply of the electronics of land side, steel construction corrosion because of betatopic is prevented；
(9) Classified Order is set in cable duct, ensure that the classification of follow-up cable is set up, prevent different cables
Between interference, provides and facilitates for follow-up maintenance；
(10) into behind island, the support for setting reference electrode in steel cylinder land side will be embedded in the sandstone of land side for a long time, therefore
Using the requirement for anticorrosion equal with steel cylinder and steel secondary lattice land side, the corrosion of support can be effectively avoided, long-acting support is played
Effect.
Brief description of the drawings
Fig. 1 is the top view of the marine steel cylinder bank protection structure multiple-anticorrosion protection structure using the inventive method；
Fig. 2 is the side view of the marine steel cylinder bank protection structure multiple-anticorrosion protection structure using the inventive method；
Fig. 3 is the front view of the marine steel cylinder bank protection structure multiple-anticorrosion protection structure using the inventive method.
Embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
The marine steel cylinder bank protection structure multiple-anticorrosion protection construction method of the present invention, comprises the following steps：
(1) during the secondary lattice 2 of steel cylinder 1 and steel of processing steel cylinder bank protection structure, outside steel cylinder 1 and the secondary lattice 2 of steel
Anticorrosive paint is respectively coated in wall and inwall；Anticorrosive paint thickness ratio land side on the secondary outer wall of lattice 2 of the steel cylinder 1 and steel of extra large side
The anticorrosive paint on anticorrosive paint thickness and steel cylinder 1 and the secondary inwall of lattice 2 of steel on the outer wall of steel cylinder 1 and the secondary lattice 2 of steel is thick
Degree is thick, and the anticorrosive paint thickness on the secondary outer wall of lattice 2 of steel cylinder 1 and steel of extra large side preferably is the secondary lattice 2 of steel cylinder 1 and steel of land side
1.5 times of anticorrosive paint thickness on the secondary inwall of lattice 2 of anticorrosive paint thickness and steel cylinder 1 and steel on outer wall, can ensure anti-
Coating consumption is saved while detritus amount to greatest extent.
(2) multiple steel cylinders 1 and the secondary lattice 2 of steel are at sea connected as being monolithically fabricated steel cylinder shore protection knot according to design requirement
Structure system；
(3) medium coarse sand is filled in each steel cylinder 1 and the secondary lattice 2 of steel to distance steel cylinder 1 and the secondary lattice 2 of steel along certain
Distance, can be 0.5-2m, preferably 2m；
(4) in distance steel cylinder 1 respectively and the secondary inwall 30-50cm of lattice 2 of steel, and from medium coarse sand to steel cylinder 1 and steel
Template is set respectively at the range boundary on edge on secondary lattice 2, the concrete 4 that binds is poured in the closing space that template is surrounded, waits to seal
Top concrete 4 reaches form removal after design strength；
(5) pour sulphur-bonded mortar 3 in the space bound between concrete 4 and the secondary inwall of lattice 2 of steel cylinder 1 and steel and cause envelope
Push up concrete 4 and steel cylinder 1, the secondary inwall of lattice 2 of steel closely coupled, the sulphur-bonded mortar 3 along the inwall of steel cylinder 1 structure annular in shape simultaneously
And along the secondary lattice inwall of steel in fan annular；
(6) after sulphur-bonded mortar 3 reaches design strength, steel cylinder 1 and the He of concrete 4 of binding at the secondary top of lattice 2 of steel are utilized
Sulphur-bonded mortar 3 is as operation platform, the secondary outer wall of lattice 2 of steel cylinder 1 and steel of the extra large side more than design lowest stage, below top mark height
Coating on casting concrete 5 make the outer wall of concrete 5 and steel cylinder 1 and the secondary lattice 2 of steel closely coupled；Described concrete 5
Thickness is 25-30cm, can effectively prevent erosion of the chlorion to the surface of steel cylinder 1 in seawater, while preventing blocked up concrete
Overcoat causes unbalance loading to the structure of steel cylinder 1.
(7) using lifting, the construction method of Underwater Welding on ship, below the concrete 5, above the absolute altitude of mud face between
Extra large side each steel cylinder 1 and the secondary outer wall of lattice 2 of steel on sacrificial anode block 6 is respectively welded；
(8) support 11 is respectively welded in the top of the secondary outer wall of lattice 2 of steel cylinder 1 and steel in each land side, described
Anticorrosive paint is coated on support 11, then reference electrode is respectively mounted on the support 11 described in each, while in support 11
Between top and the upper edge of the secondary lattice of steel cylinder 1 or steel on equal welded cathode solder joint 17 and zero-bit solder joint 16, described support 11
The thickness of anticorrosive paint and the anticorrosive paint consistency of thickness on the outer wall of the steel cylinder 1 of land side and the secondary lattice 2 of steel；
(9) two cable ducts 8-1,8-2 are excavated on the island of the rear side of wave screening structure 13, two described cable duct 8-1,
Cable framed bent is set respectively in 8-2, so that follow-up cable can classify placement；Built between two cable ducts 8-1 and 8-2
9 and potentiostat is installed in the potentiostat between potentiostat；Anode well is excavated on the island on rear side of Article 2 cable duct 8-2
10 and in pre-packaged anode bodies 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, and potentiostat is connected after then being laid along first cable duct 8-1 cable framed bent, from
Cable framed bent of the cable along Article 2 cable duct 8-2 that potentiostat is drawn is laid, then introduce anode well 10 with it is built-in pre-
Pack anode bodies connection.
Embodiment 1
(1) during the secondary lattice 2 of steel cylinder 1 and steel of processing steel cylinder bank protection structure, outside steel cylinder 1 and the secondary lattice 2 of steel
Anticorrosive paint is respectively coated in wall and inwall；Anticorrosive paint thickness on the secondary outer wall of lattice 2 of the steel cylinder 1 and steel of extra large side is land side
Anticorrosive paint thickness on anticorrosive paint thickness and steel cylinder 1 and the secondary inwall of lattice 2 of steel on the secondary outer wall of lattice 2 of steel cylinder 1 and steel
1.5 again；
(2) multiple steel cylinders 1 and the secondary lattice 2 of steel are at sea connected as being monolithically fabricated steel cylinder shore protection knot according to design requirement
Structure system；
(3) medium coarse sand is filled in each steel cylinder 1 and the secondary lattice 2 of steel to distance steel cylinder 1 and the secondary lattice 2 of steel along 2m；
(4) in distance steel cylinder 1 respectively and the secondary inwall 30cm of lattice 2 of steel, and from medium coarse sand to steel cylinder 1 and the secondary lattice of steel
Template is set respectively at the range boundary on edge on 2, the concrete 4 that binds is poured in the closing space that template is surrounded, waits to bind mixed
Solidifying soil 4 reaches form removal after design strength；
(5) pour sulphur-bonded mortar 3 in the space bound between concrete 4 and the secondary inwall of lattice 2 of steel cylinder 1 and steel and cause envelope
Push up concrete 4 and steel cylinder 1, the secondary inwall of lattice 2 of steel closely coupled, the sulphur-bonded mortar 3 along the inwall of steel cylinder 1 structure annular in shape simultaneously
And along the secondary lattice inwall of steel in fan annular；
(6) after sulphur-bonded mortar 3 reaches design strength, steel cylinder 1 and the He of concrete 4 of binding at the secondary top of lattice 2 of steel are utilized
Sulphur-bonded mortar 3 is as operation platform, the secondary outer wall of lattice 2 of steel cylinder 1 and steel of the extra large side more than design lowest stage, below top mark height
Coating on casting concrete 5 make the outer wall of concrete 5 and steel cylinder 1 and the secondary lattice 2 of steel closely coupled；Described concrete 5
Thickness is 25cm；
(7) using lifting, the construction method of Underwater Welding on ship, below the concrete 5, above the absolute altitude of mud face between
Extra large side each steel cylinder 1 and the secondary outer wall of lattice 2 of steel on sacrificial anode block 6 is respectively welded；
(8) support 11 is respectively welded in the top of the secondary outer wall of lattice 2 of steel cylinder 1 and steel in each land side, described
Anticorrosive paint is coated on support 11, then reference electrode is respectively mounted on the support 11 described in each, while in support 11
Between top and the upper edge of the secondary lattice of steel cylinder 1 or steel on equal welded cathode solder joint 17 and zero-bit solder joint 16, described support 11
The thickness of anticorrosive paint and the anticorrosive paint consistency of thickness on the outer wall of the steel cylinder 1 of land side and the secondary lattice 2 of steel；
(9) two cable ducts 8-1,8-2 are excavated on the island of the rear side of wave screening structure 13, two described cable duct 8-1,
Cable framed bent is set respectively in 8-2, so that follow-up cable can classify placement；Built between two cable ducts 8-1 and 8-2
9 and potentiostat is installed in the potentiostat between potentiostat；Anode well is excavated on the island on rear side of Article 2 cable duct 8-2
10 and in pre-packaged anode bodies 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, and potentiostat is connected after then being laid along first cable duct 8-1 cable framed bent, from
Cable framed bent of the cable along Article 2 cable duct 8-2 that potentiostat is drawn is laid, then introduce anode well 10 with it is built-in pre-
Pack anode bodies connection.
After tested, multiple-anticorrosion effect can ensure the long-effective corrosion of steel cylinder bank protection structure.
Embodiment 2
(1) during the secondary lattice 2 of steel cylinder 1 and steel of processing steel cylinder bank protection structure, outside steel cylinder 1 and the secondary lattice 2 of steel
Anticorrosive paint is respectively coated in wall and inwall；Anticorrosive paint thickness on the secondary outer wall of lattice 2 of the steel cylinder 1 and steel of extra large side is land side
Anticorrosive paint thickness on anticorrosive paint thickness and steel cylinder 1 and the secondary inwall of lattice 2 of steel on the secondary outer wall of lattice 2 of steel cylinder 1 and steel
1.5 again；
(2) multiple steel cylinders 1 and the secondary lattice 2 of steel are at sea connected as being monolithically fabricated steel cylinder shore protection knot according to design requirement
Structure system；
(3) medium coarse sand is filled in each steel cylinder 1 and the secondary lattice 2 of steel to edge on distance steel cylinder 1 and the secondary lattice 2 of steel
1.5m；
(4) in distance steel cylinder 1 respectively and the secondary inwall 50cm of lattice 2 of steel, and from medium coarse sand to steel cylinder 1 and the secondary lattice of steel
Template is set respectively at the range boundary on edge on 2, the concrete 4 that binds is poured in the closing space that template is surrounded, waits to bind mixed
Solidifying soil 4 reaches form removal after design strength；
(5) pour sulphur-bonded mortar 3 in the space bound between concrete 4 and the secondary inwall of lattice 2 of steel cylinder 1 and steel and cause envelope
Push up concrete 4 and steel cylinder 1, the secondary inwall of lattice 2 of steel closely coupled, the sulphur-bonded mortar 3 along the inwall of steel cylinder 1 structure annular in shape simultaneously
And along the secondary lattice inwall of steel in fan annular；
(6) after sulphur-bonded mortar 3 reaches design strength, steel cylinder 1 and the He of concrete 4 of binding at the secondary top of lattice 2 of steel are utilized
Sulphur-bonded mortar 3 is as operation platform, the secondary outer wall of lattice 2 of steel cylinder 1 and steel of the extra large side more than design lowest stage, below top mark height
Coating on casting concrete 5 make the outer wall of concrete 5 and steel cylinder 1 and the secondary lattice 2 of steel closely coupled；Described concrete 5
Thickness is 30cm；
(7) using lifting, the construction method of Underwater Welding on ship, below the concrete 5, above the absolute altitude of mud face between
Extra large side each steel cylinder 1 and the secondary outer wall of lattice 2 of steel on sacrificial anode block 6 is respectively welded；
(8) support 11 is respectively welded in the top of the secondary outer wall of lattice 2 of steel cylinder 1 and steel in each land side, described
Anticorrosive paint is coated on support 11, then reference electrode is respectively mounted on the support 11 described in each, while in support 11
Between top and the upper edge of the secondary lattice of steel cylinder 1 or steel on equal welded cathode solder joint 17 and zero-bit solder joint 16, described support 11
The thickness of anticorrosive paint and the anticorrosive paint consistency of thickness on the outer wall of the steel cylinder 1 of land side and the secondary lattice 2 of steel；
(9) two cable ducts 8-1,8-2 are excavated on the island of the rear side of wave screening structure 13, two described cable duct 8-1,
Cable framed bent is set respectively in 8-2, so that follow-up cable can classify placement；Built between two cable ducts 8-1 and 8-2
9 and potentiostat is installed in the potentiostat between potentiostat；Anode well is excavated on the island on rear side of Article 2 cable duct 8-2
10 and in pre-packaged anode bodies 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, and potentiostat is connected after then being laid along first cable duct 8-1 cable framed bent, from
Cable framed bent of the cable along Article 2 cable duct 8-2 that potentiostat is drawn is laid, then introduce anode well 10 with it is built-in pre-
Pack anode bodies connection.
After tested, multiple-anticorrosion effect can ensure the long-effective corrosion of steel cylinder bank protection structure.
Embodiment 3
(1) during the secondary lattice 2 of steel cylinder 1 and steel of processing steel cylinder bank protection structure, outside steel cylinder 1 and the secondary lattice 2 of steel
Anticorrosive paint is respectively coated in wall and inwall；Anticorrosive paint thickness on the secondary outer wall of lattice 2 of the steel cylinder 1 and steel of extra large side is land side
Anticorrosive paint thickness on anticorrosive paint thickness and steel cylinder 1 and the secondary inwall of lattice 2 of steel on the secondary outer wall of lattice 2 of steel cylinder 1 and steel
1.5 again；
(2) multiple steel cylinders 1 and the secondary lattice 2 of steel are at sea connected as being monolithically fabricated steel cylinder shore protection knot according to design requirement
Structure system；
(3) medium coarse sand is filled in each steel cylinder 1 and the secondary lattice 2 of steel to distance steel cylinder 1 and the secondary lattice 2 of steel along 2m；
(4) in distance steel cylinder 1 respectively and the secondary inwall 40cm of lattice 2 of steel, and from medium coarse sand to steel cylinder 1 and the secondary lattice of steel
Template is set respectively at the range boundary on edge on 2, the concrete 4 that binds is poured in the closing space that template is surrounded, waits to bind mixed
Solidifying soil 4 reaches form removal after design strength；
(5) pour sulphur-bonded mortar 3 in the space bound between concrete 4 and the secondary inwall of lattice 2 of steel cylinder 1 and steel and cause envelope
Push up concrete 4 and steel cylinder 1, the secondary inwall of lattice 2 of steel closely coupled, the sulphur-bonded mortar 3 along the inwall of steel cylinder 1 structure annular in shape simultaneously
And along the secondary lattice inwall of steel in fan annular；
(6) after sulphur-bonded mortar 3 reaches design strength, steel cylinder 1 and the He of concrete 4 of binding at the secondary top of lattice 2 of steel are utilized
Sulphur-bonded mortar 3 is as operation platform, the secondary outer wall of lattice 2 of steel cylinder 1 and steel of the extra large side more than design lowest stage, below top mark height
Coating on casting concrete 5 make the outer wall of concrete 5 and steel cylinder 1 and the secondary lattice 2 of steel closely coupled；Described concrete 5
Thickness is 28cm；
(7) using lifting, the construction method of Underwater Welding on ship, below the concrete 5, above the absolute altitude of mud face between
Extra large side each steel cylinder 1 and the secondary outer wall of lattice 2 of steel on sacrificial anode block 6 is respectively welded；
(8) support 11 is respectively welded in the top of the secondary outer wall of lattice 2 of steel cylinder 1 and steel in each land side, described
Anticorrosive paint is coated on support 11, then reference electrode is respectively mounted on the support 11 described in each, while in support 11
Between top and the upper edge of the secondary lattice of steel cylinder 1 or steel on equal welded cathode solder joint 17 and zero-bit solder joint 16, described support 11
The thickness of anticorrosive paint and the anticorrosive paint consistency of thickness on the outer wall of the steel cylinder 1 of land side and the secondary lattice 2 of steel；
(9) two cable ducts 8-1,8-2 are excavated on the island of the rear side of wave screening structure 13, two described cable duct 8-1,
Cable framed bent is set respectively in 8-2, so that follow-up cable can classify placement；Built between two cable ducts 8-1 and 8-2
9 and potentiostat is installed in the potentiostat between potentiostat；Anode well is excavated on the island on rear side of Article 2 cable duct 8-2
10 and in pre-packaged anode bodies 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, and potentiostat is connected after then being laid along first cable duct 8-1 cable framed bent, from
Cable framed bent of the cable along Article 2 cable duct 8-2 that potentiostat is drawn is laid, then introduce anode well 10 with it is built-in pre-
Pack anode bodies connection.
After tested, multiple-anticorrosion effect can ensure 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 comprise the following steps：
(1) during the steel cylinder and the secondary lattice of steel of processing steel cylinder bank protection structure, in steel cylinder and the secondary especially wall of steel and interior
The steel cylinder and steel of the anticorrosive paint thickness ratio land side on anticorrosive paint, the secondary especially wall of steel cylinder and steel of extra large side is respectively coated in wall
The anticorrosive paint thickness on the secondary lattice inwall of anticorrosive paint thickness and steel cylinder and steel on the outer wall of secondary lattice is thick；
(2) multiple steel cylinders and the secondary lattice of steel are at sea connected as being monolithically fabricated steel cylinder bank protection structure according to design requirement
System；
(3) medium coarse sand is filled in each steel cylinder and the secondary lattice of steel to distance steel cylinder and the secondary lattice of steel along certain distance；
(4) in distance steel cylinder respectively and the secondary lattice inwall 30-50cm of steel, and from medium coarse sand to edge on steel cylinder and the secondary lattice of steel
Range boundary at template is set respectively, the concrete that binds is poured in the closing space that template is surrounded, concrete to be bound reaches
Form removal after to design strength；
(5) sulphur-bonded mortar is poured so that the concrete that binds in the space bound between concrete and the secondary lattice inwall of steel cylinder and steel
Closely coupled with steel cylinder, the secondary lattice inwall of steel, the sulphur-bonded mortar is along steel cylinder inner wall structure annular in shape and along along the secondary lattice of steel
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 the secondary lattice of steel are utilized
As operation platform, poured on the secondary especially coating of wall of steel cylinder and steel of the extra large side more than design lowest stage, below top mark height
Building concrete makes the outer wall of concrete and steel cylinder and the secondary lattice of steel closely coupled, and the thickness of described concrete is 25-30cm；
(7) using lifting, the construction method of Underwater Welding on ship, below the concrete, above the absolute altitude of mud face between sea
Sacrificial anode block is respectively welded on the secondary especially wall of each steel cylinder and steel of side；
(8) support is respectively welded in the top of the secondary especially wall of steel cylinder and steel in each land side, is applied on described support
Cover anticorrosive paint, be then respectively mounted reference electrode on the support described in each, at the same above support with steel cylinder or
The thickness of anticorrosive paint between the upper edge of steel pair lattice on equal welded cathode solder joint and zero-bit solder joint, described support and land side
Anticorrosive paint consistency of thickness on the outer wall of steel cylinder and the secondary lattice of steel；
(9) two cable ducts are excavated on the island on rear side of wave screening structure, set cable to arrange respectively in two described cable ducts
Frame；Potentiostat is installed between two cable ducts between construction potentiostat and in potentiostat；In Article 2 cable duct
Anode well is excavated on the island of rear side and in pre-packaged anode bodies built in anode well；
(10) extraction wire of reference electrode, zero-bit solder joint and cathode pads is each passed through into cable sleeve to guide upwards, then worn
Wave screening structure is crossed, potentiostat is connected after then being laid along the cable framed bent of first cable duct, the electricity drawn from potentiostat
Cable framed bent of the cable along Article 2 cable duct is laid, and is then introduced anode well and is connected with built-in pre-packaged anode bodies.
2. marine steel cylinder bank protection structure multiple-anticorrosion protection construction method according to claim 1, it is characterised in that：
Along 2m on the medium coarse sand of filling to distance steel cylinder and the secondary lattice of steel in each secondary lattice of steel cylinder and steel.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108396323A (en) * | 2018-03-26 | 2018-08-14 | 中国海洋大学 | A method of for naked steel construction cathodic protection in seawater |
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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 |