CN106498968B - The application of concrete caisson outer cladding corrosion-resistant metallic material structure - Google Patents
The application of concrete caisson outer cladding corrosion-resistant metallic material structure Download PDFInfo
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- CN106498968B CN106498968B CN201610911059.5A CN201610911059A CN106498968B CN 106498968 B CN106498968 B CN 106498968B CN 201610911059 A CN201610911059 A CN 201610911059A CN 106498968 B CN106498968 B CN 106498968B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0007—Production methods using a mold
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
- E02D2300/002—Concrete
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
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- General Life Sciences & Earth Sciences (AREA)
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Abstract
The invention discloses a kind of applications of concrete caisson outer cladding corrosion-resistant metallic material structure, the application is by being used as fixed and anchorage element using the outboard template of concrete as support construction, stud and nut, the surface realized for large-area planar concrete structure coats, compared with other outer coating techniques, it is not required to punch molded concrete structure, avoids destruction of the outer cladding process to concrete structure.
Description
The present patent application is the division Shen of a kind of parent application " method of concrete caisson outer cladding corrosion-resistant metallic material "
Please, parent application application No. is 2015107798939, the applying date is on November 13rd, 2015.
Technical field
The invention belongs to the protection fields of concrete in marine environment, are related to a kind of concrete caisson outer cladding corrosion resistant metal
The method of material.
Background technique
In recent years, support of the country to marine economy development will not only promote Ocean Technology in China from nearly shallow sea to far-reaching
The strategic shift in sea must also will further facilitate each field and utilize horizontal and associated criticality technology hair to marine resources
Exhibition.It is pointed out in exploitation ocean and coastal engineering technical aspect, " national " 12th Five-Year Plan " Marine Sciences and technical development plan outline ",
Give priority to change off land deep water port marine structure object construction technique, seabed tunnel engineering and technological research and demonstration, marine structures
Building technology, ocean new material and anticorrosion technique etc..
Gravity caisson structure pattern be in China coast structures it is distributed more widely, using a kind of more structural shape,
It is widely used in the port engineering construction of China coast.Its advantage is that good integrity, it is firm in structure it is durable, steel using amount is few, makes
Valence is lower, adaptable, construction is relatively simple.It is mixed with reinforcing bar as the development of water industry, deep-water berth construction increase increasingly
Solidifying soil is the precast caisson of substrate gradually to large scale, low weight, multifunction development, using also more extensive.Reinforced concrete
Soil material is the chief component of harbour engineering structures, almost in port and pier, bridge spanning the sea, tide power plant and seabed tunnel
It is widely used in all offshore engineerings such as road.But in complicated harsh marine environment, as caused by steel bar corrosion
Volume expansion will be more than 2~7 times of its original volume, and the swelling stress of generation reaches as high as 60MPa, so as to cause concrete hair
Raw suitable muscle spalling.Concrete in marine environment structure, which often just will appear less than 10 years, splits, peels off along muscle rust distending, is splashed especially with wave
Area and Tidal zone more very, seriously threaten the safety of concrete structure.Because the concrete structures caused by reinforcement corrosion are resistance to
Long property reduces the principal element for having become and influencing ocean engineering safe operation and service life, and influences gravity type reinforced concrete
One of the principal element of native caisset durability.
Delaying concrete reinforcement corrosion is the emphasis for guaranteeing concrete structure durability.For preventing and treating coagulation in ocean engineering
The common method of steel bar corrosion is mainly include the following types: (1) uses the high-quality air-free concrete of high-performance, (2) in concrete in soil
External coating anticorrosive paint, (3) participate in reinforcing steel bar corrosion inhibitor, (4) in concrete and carry out applying/coating protection to reinforcing bar before construction
(such as epoxy-coated reinforcement, galvanizing steel), (5) carry out cathodic protection to the reinforcing bar in concrete, (6) select stainless steel rebar
Or the resistant materials such as fiber reinforced plastics bar substitute regular reinforcement.
For gravity type concrete caisson structure, especially for the harsh offshore type corroded under marine environment or off-lying sea
The caisset in area, it is desirable that reinforced concrete structure should have high-durability and should non-maintaining as far as possible or few dimension within projected life
Shield.However due to the design feature and weight demands of gravity caisson, currently used corrosion protection steps mainly use high property
The high-quality air-free concrete of energy, external coating anticorrosive paint select epoxy-coated reinforcement to substitute regular reinforcement, but due to above-mentioned side
The respective limitation of method is difficult to meet the requirement of reinforced concrete structure high-durability, and there is an urgent need to more advanced, long-acting to prevent
Shield technology to carry out more efficiently protection to the reinforced concrete structure being on active service with caisset pattern.
Based on this, the anti-corrosion that the present invention is directed to lightweight concrete caisset under aggressive marine environment has invented one kind at it
Outer surface coat one layer of corrosion-resistant metallic material method, including corrosion-resistant metallic material selection, design corrosion resistant metal plate specification and
Installation site, field installation process and points for attention etc., to realize that large area caisson reinforced concrete structure outer surface cladding is resistance to
Corrosion material provides the method for a set of simple possible, is particularly suitable for the protection to splash zone and Tidal zone.It is proposed by the present invention
Method for coating, with the prefabricated synchronous progress of template, destroys concrete structure without the later period, with concrete caisson before concreting
Construction technology combine closely.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, having invented one kind can be in aggressive marine environment
In the technology of outer cladding corrosion resistant metal plate for being protected concrete caisson structure, pass through the outer side mold using concrete
Plate, as fixed and anchorage element, is realized for large-area planar concrete structure as support construction, stud and nut
Surface cladding is formed in conjunction with the corrosion characteristics of anti-corrosion evaluation and concrete in marine environment reinforcing bar to corrosion-resistant metallic material
The aseptic technic of a set of effective and feasible outer cladding corrosion resistant metal for concrete in marine environment caisson and its realization side
Method.
To achieve the goals above, the invention is realized by the following technical scheme:
A kind of method of concrete caisson outer cladding corrosion-resistant metallic material, the described method comprises the following steps:
Step 1: the inner surface of corrosion resistant metal plate and outboard template is fitted closely, and by stud through outboard template and
Corrosion resistant metal plate, and the both ends of stud is made to expose corrosion resistant metal plate and outboard template respectively, nut is then screwed in into stud respectively
Both ends and tighten, corrosion resistant metal plate and outboard template are tightly secured together；
Step 2: suitable by pouring requirement for the corrosion resistant metal plate being fixed together in step 1 and being assembled into outboard template
The shape for the concrete caisson to be poured, after assembly is good shape composed by the inner wall of all corrosion resistant metal plates with to be poured
Concrete caisson outer profile it is identical；
Step 3: the casting concrete into corrosion resistant metal plate, the stud that corrosion resistant metal plate inside is exposed are poured into coagulation
In native caisson；
Step 4: after concrete caisson pouring molding, unloading outboard template, will between corrosion resistant metal plate using with it is anti-corrosion
The identical welding rod of metal material carries out single-selded lap joint, closes corrosion resistant metal plate by concrete caisson.
In the above-mentioned technical solutions, the stud, nut, the material of corrosion resistant metal plate three are identical.
In the above-mentioned technical solutions, it is provided with that quantity is identical, size is identical, position phase on corrosion resistant metal plate and outboard template
Corresponding hole, to penetrate stud.
In the above-mentioned technical solutions, in step 1, the stud length exposed on the inside of corrosion resistant metal plate is at least caisson wall
Thick 1/2 and it is no more than caisson wall thickness；Further, the stud length exposed on the inside of corrosion resistant metal plate is 4-20cm, outboard template
The stud length that outside is exposed is 1-5cm.
In the above-mentioned technical solutions, in step 1, nut and stud spot welding on the inside of corrosion resistant metal plate are reinforced.
In the above-mentioned technical solutions, in step 4, first the nut on the outside of outboard template is unloaded, then by outboard template
Unload and be allowed to separate with corrosion resistant metal plate, then nut is screwed in stud again and holds out against corrosion resistant metal plate, and to stud, nut and
The connection gap at the outboard template three place of combining is sealed processing.
The method of the concrete caisson outer cladding corrosion-resistant metallic material is in water conservancy project Under Concrete Caisson
Application.
The mold (referring to Fig. 3) of the production concrete caisson, including corrosion resistant metal plate (1), outboard template (2), spiral shell
Column (3) and nut (4), the stud, nut, the material of corrosion resistant metal plate three are identical；On corrosion resistant metal plate and outboard template
It is provided with that quantity is identical, size is identical, the corresponding hole in position, the stud runs through the hole of outboard template and corrosion resistant metal plate,
And corrosion resistant metal plate and outboard template are exposed in the both ends of stud respectively, the nut screw in the both ends of stud by corrosion resistant metal plate and
Outboard template fits closely；Multiple corrosion resistant metal plates are mutually bolted together so that shape composed by the inner wall of corrosion resistant metal plate
It is identical as the concrete caisson outer profile to be poured.
The present invention has the advantage that compared with other concrete caisson anticorrosion process
1, it is directed to lightweight caisson concrete structure, the present invention has simple and feasible mounting process, is applicable to large area
The surface of concrete plane coats；
2, proposed by the present invention to be directed to concrete caisson outer cladding aseptic technic, using the outer side mold of concreting
Plate as support construction, combine closely with process is poured by installation process.Compared with other outer coating techniques, it is not required to mix molded
Xtah Crude Clay structure is punched, and destruction of the outer cladding process to concrete structure is avoided.
3, in view of the anti-corrosion method at present to common metal material under marine environment, (anticorrosive paint is combined with sacrificial anode
Protection) relative maturity, under extremely serious harsh marine corrosion environment, the present invention can also be with organic coating anti-corrosion and sacrificial
Domestic animal anode cathode protection aseptic technic is used in combination, and protects year to reinforce the protection class to concrete structure and extend it
Limit.
The present invention proposes a kind of completely new resolving ideas and complete mount scheme for the anti-corrosion protection of concrete caisson,
And the protection service life of overcoating corrosion-resistant metallic material can reasonably be predicted according to the corrosion evaluation link of early period, that is, be existed
It is applied in water conservancy project Under Concrete Caisson.It is of the invention that be mounted on concreting early period prefabricated synchronous with template
It carries out, combines closely with the construction technology of concrete caisson, and material therefor and component can design prefabricated in advance, can satisfy
The requirement of site operation duration has certain engineering promotion prospect.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of corrosion resistant metal plate and outboard template in the present invention.
Fig. 2 is the structural schematic diagram in the present invention after corrosion resistant metal plate and the cooperation of outboard template stud and nut, in figure
Two nuts are only depicted as explanation, do not represent whole.
Fig. 3 is to utilize corrosion resistant metal plate and outboard template assembly formwork by taking the concrete caisson for pouring cuboid as an example
Structural schematic diagram.
Fig. 4 is status diagram when carrying out concreting.
Fig. 5 is the structural schematic diagram that concrete caisson is ultimately produced.
Specific embodiment
In the method for concrete caisson outer cladding corrosion-resistant metallic material proposed by the invention, used major die
Structural unit includes corrosion resistant metal plate 1, outboard template 2, stud 3 and nut 4.
The method of the concrete caisson outer cladding corrosion-resistant metallic material is as follows:
In conjunction with the characteristics of corrosive environment, the material for determining corrosion resistant metal plate 1 and stud 3 and spiral shell are tested by corrosion evaluation
The material of mother 4 is (firstly, investigate the marine environment of concrete caisson institute service condition, including hydrologic condition, seawater conductance
Rate, year-round average temperature, chloride ion content etc., in conjunction with the characteristics of corrosive environment, by effective corrosion evaluation means simulation or
Corrosion evaluation test is carried out to the corrosion resistant metal plate of quasi- selection under practical corrosive environment, should include open circuit potential, polarization curve, friendship
Two kinds of the corrosion tests such as the electrochemical methods such as flow impedance or salt spray test, stress corrosion (cracking) test, corrosion coupon test or
It is two or more, then according to test result and the material of material cost factor selection corrosion resistant metal plate 1, stud 3 and nut 4),
The material of stud 3 and nut 4 is identical as the material of corrosion resistant metal plate 1, to avoid galvanic corrosion occurs；It is mixed according to what is poured
The specification (including shape, size, area) of solidifying soil caisson determines the specification (including shape, size, area) of corrosion resistant metal plate 1,
To guarantee that corrosion resistant metal plate 1 can completely enclose the claimed surface of concrete caisson.
It referring to Fig. 1, drills at 2 marginal position of corrosion resistant metal plate 1 and outboard template respectively, the position of the two drilling is kept
Unanimously (quantity of the hole 1-1 i.e. on corrosion resistant metal plate 1 is identical as the quantity of hole 2-1 on outboard template 2, on corrosion resistant metal plate 1
Hole 1-1 size it is identical as the size of hole 2-1 on outboard template 2, the position and outside of the hole 1-1 on corrosion resistant metal plate 1
The position of hole 2-1 in template 2 is corresponding), drilling hole amount depends on the weight of corrosion resistant metal plate, what weight needed to anchor more again
Active force is bigger, and drilling hole amount is also more, and vice versa.
Corrosion resistant metal plate 1 and the inner surface of outboard template 2 are fitted closely, and stud 3 is penetrated into outboard template 2 and anti-corrosion
Metal plate 1, and the both ends of stud 3 is made to expose corrosion resistant metal plate 1 and outboard template 2 respectively, preferably 1 side of corrosion resistant metal plate is revealed
Stud length out is at least the 1/2 of concrete caisson thickness and is no more than caisson wall thickness, the stud that 2 side of outboard template is exposed
Length is 1-3 times (1-5cm) of 4 thickness of nut；Then both ends that nut 4 is screwed in stud 3 respectively, by corrosion resistant metal plate 1
It is tightly secured together (referring to fig. 2) with outboard template 2, the nut 4 of 1 inside of corrosion resistant metal plate and 3 spot welding of stud are reinforced.
It is suitble to be wanted by pouring requirement and being assembled into the corrosion resistant metal plate 1 being fixed together in step 3 with outboard template 2
The shape of the concrete caisson poured, the shape that corrosion resistant metal plate 1 forms is identical as the shape for the concrete caisson to be poured,
As shown in figure 3, needing the corrosion resistant metal plate that will be fixed together in step 3 by taking the concrete caisson for pouring cuboid as an example
1 is assembled into cuboid identical with the concrete caisson outer profile to be poured with outboard template 2, guarantees anti-corrosion gold when assembled
Belong to plate 1 in the inside of outer side template 2, i.e., it is assembled it is good after all corrosion resistant metal plates 1 inner wall composed by shape with to be poured
Concrete caisson outer profile it is identical, just can guarantee the concrete caisson that required shape is formed after the completion of pouring in this way.
Casting concrete 5 (Fig. 4) into corrosion resistant metal plate 1 pours the stud exposed on the inside of corrosion resistant metal plate into mixed
In solidifying soil caisson.
After concrete caisson pouring molding, first the nut 4 in 2 outside of outboard template is unloaded, then unloads outboard template 2
Under be allowed to separate with corrosion resistant metal plate 1, then nut 4 is screwed in into stud 3 again and holds out against corrosion resistant metal plate 1, and to stud, nut
The connection gap for combining place with outboard template three carries out necessary encapsulation process, will finally use between corrosion resistant metal plate 1
Welding rod identical with corrosion resistant metal material carries out single-selded lap joint, closes corrosion resistant metal plate by concrete caisson, to described in this
Concrete caisson completes (Fig. 5).
Specific embodiment:
Using certain off-lying sea engineering concrete caisson as protected object, using the present invention to the concrete caisson splash zone and tidal range
Area part carries out anti-corrosion and reinforces protection.Select the 316L stainless-steel sheet of 3mm thickness as the resistance to of concrete caisson surface outer cladding
Metal plate is lost, having a size of 1220mm × 2440mm, (annual tide 0.5 meter below a height of design lowest stage of protection zone subscript
Poor 1 meter).First using the 316L harness cord stud and 316L nut that diameter is 12mm by stainless-steel sheet and concrete caisson outer side mold
Plate is relatively fixed by its after fitting closely.Each structural unit chooses eight groups of anchor points, respectively using stud and nut along stainless
Steel steel plate edge is fixed, and each edge has three groups.After fixation, assembled formwork, casting concrete, by outside when demoulding are carried out
The nut of template removes, and again reinstalls nut after removing outboard template, and mutually tie to stud, nut with outboard template three
Connection gap at conjunction carries out necessary encapsulation process (for example, being welded using welding rod identical with corrosion resistant metal material),
By using welding rod identical with corrosion resistant metal material to carry out single-selded lap joint between each corrosion resistant metal plate, (lap of splice is not less than again
20mm, weld seam should be continuous full, should not have obvious shortcoming), it completes to caisson described in this.
Illustrative description has been done to the present invention above, it should explanation, the case where not departing from core of the invention
Under, any simple deformation, modification or other skilled in the art can not spend the equivalent replacement of creative work equal
Fall into protection scope of the present invention.
Claims (4)
1. application of the concrete caisson outer cladding corrosion-resistant metallic material structure in water conservancy project Under Concrete Caisson, special
Sign is:
Step 1: the inner surface of corrosion resistant metal plate and outboard template is fitted closely, and by stud through outboard template and anti-corrosion
Metal plate, and the both ends of stud is made to expose corrosion resistant metal plate and outboard template respectively, then nut is screwed in the two of stud respectively
It holds and tightens, corrosion resistant metal plate and outboard template are tightly secured together；
Step 2: it is suitble to be wanted by pouring requirement and being assembled into the corrosion resistant metal plate being fixed together in step 1 with outboard template
The shape of the concrete caisson poured, shape composed by the inner wall of all corrosion resistant metal plates is mixed with what is poured after assembly is good
Solidifying soil caisson outer profile is identical；
Step 3: the casting concrete into corrosion resistant metal plate, the stud that corrosion resistant metal plate inside is exposed, which is poured into concrete, to sink
In case；
Step 4: after concrete caisson pouring molding, unloading outboard template, will use between corrosion resistant metal plate and corrosion resistant metal
The identical welding rod of material carries out single-selded lap joint, closes corrosion resistant metal plate by concrete caisson；
Make the mold of concrete caisson, including corrosion resistant metal plate, outboard template, stud and nut are the stud, nut, resistance to
The material for losing metal plate three is identical；It is provided with that quantity is identical, size is identical, position is opposite on corrosion resistant metal plate and outboard template
The hole answered, the stud run through outboard template and corrosion resistant metal plate hole, and the both ends of stud expose respectively corrosion resistant metal plate and
Outboard template, the both ends that the nut screws in stud fit closely corrosion resistant metal plate and outboard template；Multiple corrosion resistant metal plates
It is mutually bolted together so that shape composed by the inner wall of corrosion resistant metal plate and the concrete caisson outer profile phase to be poured
Together.
2. concrete caisson outer cladding corrosion-resistant metallic material structure according to claim 1 is heavy in water conservancy project Under Concrete
Application in case construction, wherein the mold of the production concrete caisson, it is characterised in that: the spiral shell exposed on the inside of corrosion resistant metal plate
Column length is at least the 1/2 of concrete caisson wall thickness and is no more than concrete caisson wall thickness.
3. concrete caisson outer cladding corrosion-resistant metallic material structure according to claim 1 is heavy in water conservancy project Under Concrete
Application in case construction, wherein the mold of the production concrete caisson, it is characterised in that: the spiral shell exposed on the inside of corrosion resistant metal plate
Column length is 4-20cm.
4. concrete caisson outer cladding corrosion-resistant metallic material structure according to claim 1 is heavy in water conservancy project Under Concrete
Application in case construction, wherein the mold of the production concrete caisson, it is characterised in that: the stud exposed on the outside of outboard template
Length is 1-5cm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610911059.5A CN106498968B (en) | 2015-11-13 | 2015-11-13 | The application of concrete caisson outer cladding corrosion-resistant metallic material structure |
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| CN201510779893.9A CN105350558B (en) | 2015-11-13 | 2015-11-13 | A kind of method of concrete caisson outer cladding corrosion-resistant metallic material |
| CN201610911059.5A CN106498968B (en) | 2015-11-13 | 2015-11-13 | The application of concrete caisson outer cladding corrosion-resistant metallic material structure |
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| CN201510779893.9A Division CN105350558B (en) | 2015-11-13 | 2015-11-13 | A kind of method of concrete caisson outer cladding corrosion-resistant metallic material |
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| JPH08311882A (en) * | 1995-05-18 | 1996-11-26 | Hitachi Zosen Corp | Steel plate concrete composite structure and manufacture therefor |
| JP3819387B2 (en) * | 2003-10-17 | 2006-09-06 | 川崎重工業株式会社 | Underwater structure and its construction method |
| CN101469543A (en) * | 2007-12-28 | 2009-07-01 | 上海市基础工程公司 | Steel boxed cofferdam construction technique for steel-concrete combined bottom board |
| CN102482861A (en) * | 2009-03-13 | 2012-05-30 | 伊诺克西有限公司 | Gabion elements for producing constructions such as walls, barricades, or the like |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103194961A (en) * | 2013-03-27 | 2013-07-10 | 天津市市政工程设计研究院 | Bridge pier column under high-concentration salt solution corrosion environment |
| CN203531922U (en) * | 2013-11-04 | 2014-04-09 | 吴成玉 | High-toughness nodular cast iron and reinforced concrete combined tunnel wall plate |
| CN103693176A (en) * | 2013-11-29 | 2014-04-02 | 中交第四航务工程局有限公司 | Caisson dock gate |
| CN203755327U (en) * | 2013-12-30 | 2014-08-06 | 高运控股集团有限公司 | Concrete open caisson formwork structure |
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- 2015-11-13 CN CN201510779893.9A patent/CN105350558B/en active Active
- 2015-11-13 CN CN201610911059.5A patent/CN106498968B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08311882A (en) * | 1995-05-18 | 1996-11-26 | Hitachi Zosen Corp | Steel plate concrete composite structure and manufacture therefor |
| JP3819387B2 (en) * | 2003-10-17 | 2006-09-06 | 川崎重工業株式会社 | Underwater structure and its construction method |
| CN101469543A (en) * | 2007-12-28 | 2009-07-01 | 上海市基础工程公司 | Steel boxed cofferdam construction technique for steel-concrete combined bottom board |
| CN102482861A (en) * | 2009-03-13 | 2012-05-30 | 伊诺克西有限公司 | Gabion elements for producing constructions such as walls, barricades, or the like |
Also Published As
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| CN106498968A (en) | 2017-03-15 |
| CN105350558A (en) | 2016-02-24 |
| CN105350558B (en) | 2017-06-23 |
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