CN106320336B - The corrosion protection apparatus and its application method at marine environment steel-pipe pile Tidal zone position - Google Patents
The corrosion protection apparatus and its application method at marine environment steel-pipe pile Tidal zone position Download PDFInfo
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- CN106320336B CN106320336B CN201610879078.4A CN201610879078A CN106320336B CN 106320336 B CN106320336 B CN 106320336B CN 201610879078 A CN201610879078 A CN 201610879078A CN 106320336 B CN106320336 B CN 106320336B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/64—Repairing piles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/52—Submerged foundations, i.e. submerged in open water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D37/00—Repair of damaged foundations or foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/24—Prefabricated piles
- E02D5/28—Prefabricated piles made of steel or other metals
- E02D5/285—Prefabricated piles made of steel or other metals tubular, e.g. prefabricated from sheet pile elements
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2200/00—Geometrical or physical properties
- E02D2200/17—Geometrical or physical properties including an electric conductive element
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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Abstract
The invention provides a kind of corrosion protection apparatus at marine environment steel-pipe pile Tidal zone position, belong to technical field of civil engineering.It solves existing marine environment Tidal zone anti-corrosion of steel pipe pile and loses technical deficiency.The corrosion protection apparatus at this marine environment steel-pipe pile Tidal zone position includes：Steel-pipe pile, is set in the seawater, and the opening poured into for seawater is provided with steel-pipe pile, and opening is located at the position that steel-pipe pile outer peripheral sidewall is in contact with lunar month lunation spring tide full sea tidal level；Sacrificial anode, is set at least one piece, sacrificial anode is arranged on inside steel-pipe pile, and wire is connected with sacrificial anode and wire passes and is open and electrically connected with steel-pipe pile outer peripheral sidewall, sacrificial anode, seawater and steel-pipe pile three form galvanic cell.Present invention also offers a kind of application method of the corrosion protection apparatus at marine environment steel-pipe pile Tidal zone position.The present invention has the advantages that anticorrosion ability is good.
Description
Technical field
The invention belongs to technical field of civil engineering, it is related to a kind of corrosion protection at marine environment steel-pipe pile Tidal zone position
Device and its application method.
Background technology
With the development of coastal industry, the development and utilization of marine resources, increasing offshore based installations are built into
For the necessary hardware of development.But it is due to marine corrosion bad environments, and generally there is electrochemical nonuniformity on the surface of steel construction,
Many microcosmic corrosion cells and macrocorrosion battery, therefore, the electricity of metal structure and structure are easily formed in the seawater
Chemical attack is inevitable.
It is main in existing engineering practice to use coating and negative electrode in order to reduce the safe operating life that corrosion ensures facility
The measure of protection controls the corrosion rate of metal material under marine environment, realizes the purpose of anti-corrosion protection.Wherein, cathodic protection
Method is a kind of electrochemical protection technology of comparative maturity, is broadly divided into two kinds of impressed current method and sacrificial anode protection.
Sacrificial anode protection has obtained wide due to installation simplicity, without special maintenance management, the low feature of operating cost
General application.But for steel-pipe pile, sacrificial protection is limited by electrolyte solution (seawater) often to be soaked in seawater
Region is applied very well, but limited in Seawater splash zone and Tidal zone this method protecting effect, at all can not then in atmospheric region
Using.
To solve the above problems, to more than seawater Chang Jin areas being mostly to realize anti-corrosion by coating, covering material etc. in engineering,
But this kind of antiseptic effect is not good and poor for applicability.
In summary, it is technical not enough, it is necessary to design one kind side to solve the anti-corrosion of steel pipe pile erosion of marine environment Tidal zone
Just be applicable, the corrosion protection apparatus that anticorrosion ability is good.
The content of the invention
The purpose of the present invention is there is above mentioned problem for existing technology, it is proposed that a kind of convenience is applicable, anticorrosion effect
The corrosion protection apparatus at really good marine environment steel-pipe pile Tidal zone position.
The purpose of the present invention can be realized by following technical proposal：A kind of corruption at marine environment steel-pipe pile Tidal zone position
Protector is lost, including：
Steel-pipe pile, is set in the seawater, and the opening poured into for seawater is provided with steel-pipe pile, and the opening is located at steel-pipe pile
The position that outer peripheral sidewall is in contact with lunar month lunation spring tide full sea tidal level；
Sacrificial anode, is set at least one piece, the sacrificial anode is arranged on inside steel-pipe pile, is connected on sacrificial anode
There is wire and wire passes and is open and electrically connected with steel-pipe pile outer peripheral sidewall, the sacrificial anode, seawater and steel-pipe pile three
Form galvanic cell.
In the corrosion protection apparatus at above-mentioned marine environment steel-pipe pile Tidal zone position, the sacrificial anode be one piece or
One or a string or polylith or many or many strings, and when sacrificial anode is polylith or many or gone here and there more, sacrificial anode is in elevation
It is uniformly distributed on upper or periphery in the range of Tidal zone.
In the corrosion protection apparatus at above-mentioned marine environment steel-pipe pile Tidal zone position, during lunar month lunation spring tide full sea, steel
Seawater liquid level in pile tube is concordant with opening.
In the corrosion protection apparatus at above-mentioned marine environment steel-pipe pile Tidal zone position, the sacrificial anode is aluminium sun
Pole.
The application method of the corrosion protection apparatus at marine environment steel-pipe pile Tidal zone position, is comprised the following steps that：
Steel-pipe pile is set in the seawater, demarcation design high tide level, then in steel-pipe pile and lunar month lunation spring tide full sea tidal level
Contact position sets opening, and opening diameter is can smoothly be put into sacrificial anode as standard；
Quantity that sacrificial anode is calculated by Specification Design, position are placed in steel-pipe pile；
Sacrificial anode is electrically connected with steel-pipe pile outer peripheral sidewall by wire；
Seawater is automatically introduced into as electrolyte, sacrificial anode, sea into steel-pipe pile from opening in lunar month lunation spring tide full sea
Water and steel-pipe pile three form galvanic cell.
Compared with prior art, the present invention is reasonable in design, introduces seawater in steel-pipe pile using nature tidal range and sets sacrificial
Domestic animal anode, sacrificial anode loses electronics instead of steel-pipe pile so that the metallographic structure of steel-pipe pile overall structure is stable, anticorrosion efficiency
Height, so as to realize the electrochemical protection to Tidal zone steel-pipe pile.
Brief description of the drawings
Fig. 1 is the structural representation of a preferred embodiment of the present invention.
Fig. 2 is the phantom of steel-pipe pile in a preferred embodiment of the present invention.
Fig. 3 is the distribution figure of sacrificial anode in the embodiment of the present invention one.
Fig. 4 is the distribution figure of sacrificial anode in the embodiment of the present invention two.
In figure, 10, steel-pipe pile；11st, it is open；20th, sacrificial anode；30th, wire.
Embodiment
The following is specific embodiment of the invention and with reference to accompanying drawing, technical scheme is further described,
But the present invention is not limited to these embodiments.
With the development of coastal industry, the development and utilization of marine resources, offshore based installations turn development into
Must hardware.But because generally there is electrochemical nonuniformity on the surface of marine corrosion bad environments and steel construction, it is in seawater
In will form many microcosmic corrosion cells and macrocorrosion battery, easily cause the electrochemical corrosion of steel structure thing.
In order to reduce the safe operating life that corrosion ensures facility, nowadays it is used for solving under marine environment in ocean engineering
The etching problem of steel-pipe pile, mainly uses coating and cathodic protection.Cathode protection method is a kind of electrochemistry of comparative maturity
Protection technique, including impressed current method and sacrificial anode protection, wherein, sacrificial anode protection installation is easy, without special maintenance
Management, operating cost are low, are widely used in ocean engineering.
Common sacrificial protection is that anode series is attached to outside steel-pipe pile, by electrolyte solution (seawater)
Limitation can only often soak region in seawater and be applied very well, but limited in Seawater splash zone and Tidal zone this method protecting effect,
Atmospheric region can not be applied at all.More than seawater Chang Jin areas mostly in such issues that to solve, engineering is by coating, covering material etc.
Anti-corrosion is realized, the cathode protection method of the limited and too late sacrificial anode of its antiseptic effect is convenient to be applicable.
Therefore, the present invention devises a kind of corrosion protection apparatus at marine environment steel-pipe pile Tidal zone position, below in conjunction with
The technical scheme that Fig. 1 to Fig. 4 is provided the present invention is described in detail.
As depicted in figs. 1 and 2, the corrosion protection apparatus at this marine environment steel-pipe pile Tidal zone position includes：
Steel-pipe pile 10, is set in the seawater, and the opening 11 poured into for seawater is provided with steel-pipe pile 10, and opening 11 is located at steel
The position that the outer peripheral sidewall of pile tube 10 is in contact with lunar month lunation spring tide full sea tidal level；
Sacrificial anode 20, is set at least one piece, sacrificial anode 20 is arranged on inside steel-pipe pile 10, on sacrificial anode 20
Be connected with wire 30 and wire 30 pass opening 11 and electrically connected with the outer peripheral sidewall of steel-pipe pile 10, sacrificial anode 20, seawater and
The three of steel-pipe pile 10 forms galvanic cell.
Steel-pipe pile is for the drum-shaped mild steel knot for bearing vertically and horizontally load in marine environment positioned at engineering bottom
The steel-pipe pile 10 positioned at Tidal zone part is referred in structure, the present embodiment, by arranging sacrificial anode 20 inside steel-pipe pile 10
And be electrically connected with the outer peripheral sidewall of steel-pipe pile 10, risen using sea during the tidal bulge of Tidal zone, seawater is introduced into stake and is used as electrolysis
Matter is so as to realize the cathode protection method of sacrificial anode in stake, to reach the electrochemical protection to Tidal zone steel-pipe pile 10.
Seawater is in tidal bulge, the motion that ebb goes round and begins again, and has high tide level during tidal bulge, herein lunar month lunation spring tide full sea tide
Position refers to the tidal level when the maximum tidal bulge occurred in the time that the identical phases of the moon is undergone occurs twice in succession in the moon.
The present invention is solved in current ocean engineering due to being limited and can only often be soaked in seawater by electrolyte solution (seawater)
Region carries out the cathode protection method of sacrificial anode, and Tidal zone anticorrosion ability too poor shortcoming, so as to more preferably more fully protect
Protect steel-pipe pile 10.
Wherein, the position of opening 11 is opened in contact position of the Tidal zone in lunar month lunation spring tide full sea with steel-pipe pile 10,
Steel-pipe pile 10 below the position can be transferred through sacrificial anode protection to prevent corrosion, make the tidal range as much as possible on steel-pipe pile 10
Area part and seawater Chang Jin areas part can carry out the cathode protection method of sacrificial anode.
Sacrificial anode 20 is arranged on the inside of steel-pipe pile 10 and electrically connected by wire 30 with the outer peripheral sidewall of steel-pipe pile 10, works as sea
Water is after opening 11 enters in steel-pipe pile 10, and seawater forms former electricity as electrolyte, sacrificial anode 20, steel-pipe pile 10 using seawater
Pond, sacrificial anode 20 replaces steel-pipe pile 10 to provide electronics, steel-pipe pile 10 is no longer lost electronics, Stability Analysis of Structures, so as to reach anti-
The effect of corrosion.
It is further preferred that sacrificial anode 20 is one piece or one or a string or polylith or many or many strings, and when sacrifice
When anode 20 is polylith or many or gone here and there more, sacrificial anode 20 is uniformly distributed in the range of Tidal zone on elevation or on periphery.
It is the concrete arrangement of sacrificial anode 20 in the embodiment of the present invention one, the quantity of sacrificial anode 20 as shown in Figure 3
For one, and the entirety of sacrificial anode 20 is from top to bottom linearly vertically arranged in steel-pipe pile 10.
It is the concrete arrangement of sacrificial anode 20 in the embodiment of the present invention two as shown in Figure 4.The quantity of sacrificial anode 20
For a string, and each sacrificial anode 20 is sequentially connected in series together along wire 30.
Sacrificial anode 20 is from top to bottom linearly sequentially connected in series together by wire 30, the institute actually in embodiment two
There is the volume summation of sacrificial anode 20 equal with the sacrificial anode 20 in embodiment one.
In addition, in the case where not influenceing the anticorrosion ability of steel-pipe pile 10, it can be used to sacrificial anode 20
Do not limited in his arrangement, the present invention.
It is noted that elevation herein refer to Tidal zone along perpendicular to leveling datum (standard sea level) away from
From in the range of this range difference for being formed of peak and minimum point of Tidal zone, sacrificial anode 20 is uniformly distributed, that is, is sacrificed
Anode 20 is uniformly distributed in the range of Tidal zone on elevation.
Preferably, during lunar month lunation spring tide full sea, the seawater liquid level in steel-pipe pile 10 is concordant with opening 11.
Because opening 11 is located at the position that the outer peripheral sidewall of steel-pipe pile 10 is in contact with lunar month lunation spring tide full sea tidal level, work as the first and the fifteenth day of the lunar month
During moon spring tide full sea, seawater can be just poured into steel-pipe pile 10 by opening 11.With the tidal bulge of seawater, the seawater liquid in steel-pipe pile 10
The height in face is continuously increased, until the seawater liquid level in steel-pipe pile 10 is concordant with opening 11, i.e., the seawater in steel-pipe pile 10
Liquid level is located at the madial wall of steel-pipe pile 10 and the junction of opening 11.
During this tidal bulge, when the seawater liquid level in steel-pipe pile 10 is reached at opening 11, if tidal bulge does not terminate, sea
Water still can pour into steel-pipe pile 10 but while also have the seawater liquid that part seawater splash goes out in steel-pipe pile 10, but steel-pipe pile 10
Face highly keeps constant.After this tidal bulge terminates, the seawater in steel-pipe pile 10 can be reduced constantly, but can be in the first and the fifteenth day of the lunar month next time
Supplemented during moon spring tide full sea.
It is further preferred that the bottom of sacrificial anode 20 is set close to Tidal zone bottom.After steel-pipe pile 10 is squeezed into seawater,
Seawater is poured into steel-pipe pile 10 with tidal bulge, but when incipient, the seawater liquid level in steel-pipe pile 10 is relatively low, therefore, will
The bottom of sacrificial anode 20 is set close to Tidal zone bottom, galvanic cell can be formed as early as possible, to the steel-pipe pile of Tidal zone
10 carry out anti-corrosion protection.
Similarly, for the progress galvanic cell protection of steel-pipe pile 10 as early as possible to Tidal zone, it is located in embodiment two
The bottom of the sacrificial anode 20 of bottom is same to be set close to Tidal zone bottom.
Further, sacrificial anode 20 is aluminium anodes.Preferably efficiently aluminium anodes (Al-Zn-In-Mg-Ti) is made in the present invention
For sacrificial anode 20.
In the present invention, whole steel-pipe pile 10 is regarded as an entirety, sacrificial anode 20 is big using lunar month lunation with steel-pipe pile 10
The seawater that damp full sea is introduced forms galvanic cell as electrolyte in stake, is that the steel-pipe pile 10 of marine environment provides electronics, makes it
Generally in electron excess state, potential difference and electronics flowing are eliminated so that steel-pipe pile 10 no longer loses electronics and becomes ion
In pass into solution, corrosion inhibition is reached.
The principle of wherein galvanic anode protection method is：
Anode reaction：Al→Al3++3e
Cathode reaction：O2+2H2O+4e→4OH-
Herein, anode is the present position of sacrificial anode 20, and negative electrode is the present position of steel-pipe pile 10.Anode and negative electrode it
Between there is potential difference, there is electric current to flow through, accelerate anodic attack, it is suppressed that cathodic corrosion, make negative electrode steel-pipe pile 10 obtain negative electrode
Protection.Metallic aluminium provides enough to steel-pipe pile 10 in efficient aluminium anodes (Al-Zn-In-Mg-Ti) anode series in the present invention
Electronics, reaches the purpose of protection steel-pipe pile 10.
In addition, it would however also be possible to employ do not limited in the other kinds of sacrificial anode with phase same-action, the present embodiment
It is fixed.
The application method of the corrosion protection apparatus at marine environment steel-pipe pile Tidal zone position, is comprised the following steps that：
The first step：Steel-pipe pile 10 is set in the seawater, demarcation design high tide level is then big at steel-pipe pile 10 and lunar month lunation
Damp full sea tidal level contact position sets opening 11, and 11 diameters of opening are standard can smoothly be put into sacrificial anode 20；
By manufacture complete steel-pipe pile 10 squeeze into seawater, for by seawater introduce steel-pipe pile 10 inside, steel-pipe pile 10 with
Lunar month lunation spring tide full sea tidal level contact position sets opening, is used as electrolyte by the use of introducing seawater in stake during tidal bulge, it is ensured that tidal range
Area can obtain anti-corrosion protection.
Second step：Quantity that sacrificial anode 20 is calculated by Specification Design, position are placed in steel-pipe pile 10；
The size of above-mentioned opening 11 is adapted with the size of sacrificial anode 20, is easy to be put into sacrificial anode 20.
Sacrificial anode 20 can use a variety of different arrangements in the case where not influenceing the anticorrosion ability of steel-pipe pile 10
Two kinds of different method for arranging of sacrificial anode 20 are provided in mode, the present invention for reference, can be according to specific feelings when actual use
Condition makes change.
3rd step：Sacrificial anode 20 is electrically connected with the outer peripheral sidewall of steel-pipe pile 10 by wire 30；
4th step：Seawater is automatically introduced into steel-pipe pile 10 as electrolyte from opening 11 in lunar month lunation spring tide full sea,
Sacrificial anode 20, seawater and the three of steel-pipe pile 10 form galvanic cell.
Sacrificial anode 20 is electrically connected by wire 30 with the outer peripheral sidewall of steel-pipe pile 10, when Tidal zone is full in lunar month lunation spring tide
The time of tide, seawater is poured into as electrolyte in steel-pipe pile 10, and sacrificial anode 20, seawater and the three of steel-pipe pile 10 form galvanic cell,
Sacrificial anode 20 loses electronics instead of steel-pipe pile 10 so that the monolithic stability of steel-pipe pile 10, so as to reach the effect of inhibition.
The corrosion protection apparatus reasonable in design at this marine environment steel-pipe pile Tidal zone position, by steel-pipe pile 10
Portion arranges sacrificial anode 20 and electrically connected with the outer peripheral sidewall of steel-pipe pile 10 that introducing seawater into stake in lunar month lunation spring tide full sea makees
For electrolyte so as to realize the cathode protection method of sacrificial anode in stake, to reach the electrochemical protection to Tidal zone steel-pipe pile 10.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology neck belonging to of the invention
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode
Generation, but without departing from the spiritual of the present invention or surmount scope defined in appended claims.
Claims (5)
1. a kind of corrosion protection apparatus at marine environment steel-pipe pile Tidal zone position, it is characterised in that including：
Steel-pipe pile, is set in the seawater, and the opening poured into for seawater is provided with steel-pipe pile, and the opening is located at steel-pipe pile periphery
The position that side wall is in contact with lunar month lunation spring tide full sea tidal level；
Sacrificial anode, is set at least one piece, the sacrificial anode is arranged on inside steel-pipe pile, is connected with and leads on sacrificial anode
Line and wire, which are passed, to be open and is electrically connected with steel-pipe pile outer peripheral sidewall, and the sacrificial anode, seawater and steel-pipe pile three are formed
Galvanic cell.
2. the corrosion protection apparatus at marine environment steel-pipe pile Tidal zone position according to claim 1, it is characterised in that institute
It is one piece or one or a string or polylith or many or many strings to state sacrificial anode, and when sacrificial anode is polylith or many or many strings
When, sacrificial anode is uniformly distributed in the range of Tidal zone on elevation or on periphery.
3. the corrosion protection apparatus at marine environment steel-pipe pile Tidal zone position according to claim 1 or 2, its feature exists
During lunar month lunation spring tide full sea, the seawater liquid level in steel-pipe pile is concordant with opening.
4. the corrosion protection apparatus at marine environment steel-pipe pile Tidal zone position according to claim 1 or 2, its feature exists
In the sacrificial anode is aluminium anodes.
5. a kind of application method of the corrosion protection apparatus at marine environment steel-pipe pile Tidal zone position, is comprised the following steps that：
Steel-pipe pile is set in the seawater, then demarcation design high tide level contacts in steel-pipe pile with lunar month lunation spring tide full sea tidal level
Place sets opening, and opening diameter is can smoothly be put into sacrificial anode as standard；
Quantity that sacrificial anode is calculated by Specification Design, position are placed in steel-pipe pile；
Sacrificial anode is electrically connected with steel-pipe pile outer peripheral sidewall by wire；
Seawater is automatically introduced into steel-pipe pile from opening in lunar month lunation spring tide full sea as electrolyte, sacrificial anode, seawater with
And steel-pipe pile three forms galvanic cell.
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| CN106930312A (en) * | 2017-03-06 | 2017-07-07 | 中国电建集团华东勘测设计研究院有限公司 | Offshore wind turbine single-pile foundation with internal sacrificial anode structure |
| CN109868847B (en) * | 2017-12-01 | 2024-01-19 | 大唐国信滨海海上风力发电有限公司 | Corrosion on-line detection equipment for tidal range area of offshore wind power single pile foundation |
| CN108914981A (en) * | 2018-08-16 | 2018-11-30 | 兰州大学 | A kind of foundation pile corrosion protection system based on electric field action |
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| CN203498874U (en) * | 2013-07-22 | 2014-03-26 | 中交武汉港湾工程设计研究院有限公司 | Anti-corrosion structure of steel pipe pile with marine engineering structure |
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| CN206110127U (en) * | 2016-10-09 | 2017-04-19 | 宁波工程学院 | Corrosion protection device at marine environment steel -pipe pile tidal range district position |
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| JP2003286591A (en) * | 2002-03-28 | 2003-10-10 | Jfe Engineering Kk | Process for protecting corrosion of offshore structure and offshore structure |
| CN203498874U (en) * | 2013-07-22 | 2014-03-26 | 中交武汉港湾工程设计研究院有限公司 | Anti-corrosion structure of steel pipe pile with marine engineering structure |
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