CN112538816A - Be applied to marine building's novel anticorrosive steel pipe concrete pier that excels in - Google Patents
Be applied to marine building's novel anticorrosive steel pipe concrete pier that excels in Download PDFInfo
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- CN112538816A CN112538816A CN202011525892.9A CN202011525892A CN112538816A CN 112538816 A CN112538816 A CN 112538816A CN 202011525892 A CN202011525892 A CN 202011525892A CN 112538816 A CN112538816 A CN 112538816A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 151
- 239000010959 steel Substances 0.000 title claims abstract description 151
- 239000004567 concrete Substances 0.000 title claims abstract description 71
- 238000005260 corrosion Methods 0.000 claims abstract description 27
- 239000011248 coating agent Substances 0.000 claims abstract description 19
- 238000000576 coating method Methods 0.000 claims abstract description 19
- 230000002787 reinforcement Effects 0.000 claims abstract description 19
- 239000011701 zinc Substances 0.000 claims abstract description 15
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 15
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000010410 layer Substances 0.000 claims description 39
- 239000004570 mortar (masonry) Substances 0.000 claims description 8
- 239000011241 protective layer Substances 0.000 claims description 5
- 239000013535 sea water Substances 0.000 abstract description 10
- 238000003466 welding Methods 0.000 abstract description 4
- 229910002804 graphite Inorganic materials 0.000 description 11
- 239000010439 graphite Substances 0.000 description 11
- -1 graphite alkene Chemical class 0.000 description 11
- 230000007797 corrosion Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011150 reinforced concrete Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/28—Concrete reinforced prestressed
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
- Revetment (AREA)
Abstract
The invention discloses a novel high-strength anti-corrosion concrete filled steel tube pier applied to a marine building, which comprises a spiral hole sieve type steel tube, wherein a steel tube is sleeved outside the spiral hole sieve type steel tube, and a graphene anti-corrosion coating is coated outside the steel tube; outer layer concrete is poured between the spiral hole screen type steel cylinder and the steel pipe, a steel reinforcement cage is arranged in the spiral hole screen type steel cylinder, and inner layer concrete is poured on the inner side of the spiral hole screen type steel cylinder; a zinc block is arranged on the outer surface of the graphene anti-corrosion coating; the spiral hole sieve type steel cylinder comprises a plurality of steel cylinder bodies, each steel cylinder body comprises a through hole section and a spiral line section, the two adjacent steel cylinder bodies are connected in a welding mode, and the through hole sections and the spiral line sections are arranged at intervals. The invention can effectively prevent seawater from corroding the bridge pier, effectively prolong the service life of the bridge pier, reduce economic loss and enlarge the application range of the concrete-filled steel tube.
Description
Technical Field
The invention relates to the technical field of bridge structure design and construction, in particular to a novel high-strength anti-corrosion concrete filled steel tube pier applied to offshore buildings.
Background
In recent years, due to the development of offshore equipment, coasts, offshore oil drilling platforms, large-scale concrete engineering of marine defense infrastructure projects and the like of new ocean engineering, China has built and built a large number of various steel structures and reinforced concrete structure facilities in the fields of ocean oil and gas field development, port construction, deep sea exploration and the like, but the steel structures and the reinforced concrete structure facilities are extremely easy to be corroded by seawater, and once disastrous corrosion occurs, serious damage and huge economic loss can be caused. In the sea water, the offshore facilities are damaged by marine organisms and microorganisms in addition to electrochemical corrosion of the sea water.
If we do the research and protection work of the pier, a great deal of corrosion loss is completely avoidable. Therefore, the pier corrosion protection technology, especially the corrosion protection technology of key parts of steel facilities, has great significance for reducing the occurrence of serious disastrous accidents and prolonging the service life of offshore facilities.
Disclosure of Invention
The invention aims to provide a novel high-strength anti-corrosion concrete filled steel tube pier applied to a marine building, which solves the problems in the prior art, can effectively prevent seawater from corroding the pier, can effectively prolong the service life of the pier, reduces economic loss and expands the application range of concrete filled steel tube.
In order to achieve the purpose, the invention provides the following scheme: the invention provides a novel high-strength anti-corrosion concrete filled steel tube pier applied to a marine building, which comprises a spiral hole sieve type steel tube, wherein a steel tube is sleeved outside the spiral hole sieve type steel tube, and a graphene anti-corrosion coating is coated outside the steel tube; the spiral hole sieve type steel cylinder is characterized in that outer-layer concrete is poured between the spiral hole sieve type steel cylinder and the steel pipe, a steel reinforcement cage is arranged in the spiral hole sieve type steel cylinder, and inner-layer concrete is poured on the inner side of the spiral hole sieve type steel cylinder.
Preferably, a zinc block is arranged on the outer surface of the graphene anti-corrosion coating.
Preferably, the spiral hole sieve type steel cylinder comprises a plurality of steel cylinder bodies, each steel cylinder body comprises a through hole section and a spiral line section, the adjacent two steel cylinder bodies are fixedly connected, and the through hole sections and the spiral line sections are arranged at intervals.
Preferably, a plurality of through holes are circumferentially formed in the through hole section, the spiral thread section is provided with spiral threads, and the spiral threads are fixed on the inner wall of the steel cylinder body.
Preferably, connecting steel bars are bound on the surface of the steel reinforcement cage, and the connecting steel bars penetrate through the through holes in the through hole sections and extend into the outer-layer concrete.
Preferably, a prestressed steel wire is arranged between the outer concrete layer and the steel pipe, and the prestressed steel wire is wound on the outer surface of the outer concrete layer in an annular and longitudinal combined mode to form a prestressed steel wire layer.
Preferably, a mortar protective layer is arranged between the prestressed steel wire layer and the steel pipe.
The invention discloses the following technical effects:
1. form graphite alkene anticorrosive coating through scribble graphite alkene outside the steel pipe, as the isolation layer of sea water and steel pipe, the erosion and corrosion of effectual resistance wave, the corrosion protection of reinforcing steel pipe, and at graphite alkene anticorrosive coating outside side wall mounting zinc block, because graphite alkene has good electric conductivity, appear damaging the back when graphite alkene anticorrosive coating, sea water corrodes the steel pipe, sea water is as electrolyte this moment, steel pipe and zinc block take place chemical reaction, thereby the zinc block can play the effect of protection steel pipe, and can observe whether graphite alkene anticorrosive coating damages through the change of zinc block, through the second step antiseptic measure of periodic replacement zinc block as the pier, improve the holistic corrosion protection of pier, and reduce technical cost.
2. In the process of pouring concrete, the concrete on the inner side and the concrete on the outer side can be mutually fused through the through holes on the surface of the steel cylinder body, so that the connection performance between the spiral sieve-hole type steel cylinder and the concrete is improved. Meanwhile, the connecting steel bars penetrate through the through holes in the spiral sieve-hole type steel cylinder and extend into the outer layer concrete, so that the bonding performance among the interfaces of the inner layer concrete, the spiral sieve-hole type steel cylinder and the outer layer concrete is improved, the layers are stressed together, and the bearing capacity of the whole structure is greatly improved. The spiral lines arranged on the inner wall of the spiral sieve-hole type steel cylinder increase the contact area of the spiral sieve-hole type steel cylinder and concrete, so that the spiral sieve-hole type steel cylinder has better fusion effect with inner layer concrete, and the bearing capacity of the corresponding concrete at the thread section is enhanced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a top view of a novel high-strength anticorrosion concrete filled steel tube pier applied to offshore structures;
FIG. 2 is a schematic structural diagram of a steel cylinder body;
FIG. 3 is a front view of the novel high-strength anti-corrosion concrete filled steel tube bridge pier applied to the offshore construction;
FIG. 4 is a schematic structural view of a connection mode of a steel cylinder body and a steel reinforcement cage;
the concrete-reinforced concrete composite material comprises, by weight, 1-graphene anticorrosive coating, 2-steel pipe, 3-mortar protective layer, 4-prestressed wire layer, 5-outer concrete, 6-spiral hole sieve type steel cylinder, 61-steel cylinder body, 62-through hole section, 63-spiral line section, 64-through hole, 65-spiral line, 7-steel reinforcement cage, 71-connecting steel bar, 8-inner concrete and 9-zinc block.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1-4, the invention provides a novel high-strength anticorrosion concrete-filled steel tube pier applied to a marine building, which comprises a spiral hole sieve type steel cylinder 6, wherein a steel tube 2 is sleeved outside the spiral hole sieve type steel cylinder 6, and a graphene anticorrosion coating 1 is arranged outside the steel tube 2; outer layer concrete 5 is poured between the spiral hole screen type steel cylinder 6 and the steel pipe 2, a steel reinforcement cage 7 is arranged in the spiral hole screen type steel cylinder 6, inner layer concrete 8 is poured on the inner side of the spiral hole screen type steel cylinder 6, and the graphene anticorrosive coating 1 is formed by spraying multiple layers of graphene on the outer side of the steel pipe 2.
Further, install zinc block 9 on the surface of graphite alkene anticorrosive coating 1, because graphite alkene has good electric conductivity, at graphite alkene anticorrosive coating 1's externally mounted zinc block 9, after graphite alkene anticorrosive coating 1 damages, the sea water corrodes steel pipe 2, and the sea water can be as electrolyte this moment to reach the purpose that consumes zinc block 9 protection steel pipe 2, observes graphite alkene anticorrosive coating 1 through the change of outside zinc block 9 and whether damages, and can continue to be the second step anticorrosion measure of pier through changing zinc block 9.
Further, spiral hole sieve formula steel cylinder 6 includes a plurality of steel cylinder body 61, steel cylinder body 61 includes through hole section 62 and spiral line section 63, adjacent two steel cylinder body 61 adopts fixed connection, through hole section 62 with spiral line section 63 interval sets up. The spiral sieve-hole type steel cylinder 6 is a structure that a through hole section 62 and a spiral line section 63 are arranged on a local section on the surface of a steel cylinder body 61 at intervals, two processes of straight seam welding or rotary welding can be adopted between the two steel cylinder bodies 61, and when a plurality of steel cylinder bodies 61 are welded and connected to form the spiral sieve-hole type steel cylinder 6, the through hole section 62 and the spiral line section 63 are arranged at intervals.
Further, a plurality of through holes 64 are circumferentially formed in the through hole section 62, the spiral thread section 63 is provided with spiral threads 65, and the spiral threads 65 are fixed on the inner wall of the steel cylinder body 61. In the process of pouring concrete, the inner concrete and the outer concrete can be mutually fused through the through holes 64 on the surfaces of the through hole sections 62, so that the connection performance between the steel and the concrete is effectively improved, and the shearing resistance between each layer is enhanced. And inner concrete 8 can be through the area of contact of spiral line 65 increase with steel cylinder body 61, and inner concrete 8 is effectual to be in the same place with steel cylinder body 61 combination to the effectual bearing capacity who improves the pier.
Further, the ligature has connecting reinforcement 71 on the steel reinforcement cage 7 surface, connecting reinforcement 71 passes through-hole 64 on the through-hole section 62 stretches into in the outer concrete 5, and steel reinforcement cage 7 passes through reinforcing bar 71 and is connected with outer concrete 5, and partly through-hole 64 uses as inner concrete 8 and outer concrete 5 intercommunication, and another part through-hole 64 uses as connecting reinforcement 71 passes steel cylinder body 61, and steel reinforcement cage 7, inner concrete 8, spiral sieve cellular type steel cylinder 6 and outer concrete 5 connect through connecting reinforcement 71, strengthen the whole steadiness of pier.
Furthermore, prestressed wires are arranged between the outer concrete layer 5 and the steel pipe 2, and the prestressed wires are wound on the outer surface of the outer concrete layer 5 in an annular and longitudinal combination manner to form a prestressed wire layer 4. Because the prestressed steel wire has better flexibility and does not have obvious yield point, the prestressed steel wire can be cut off according to the required length during use, and the circumferential and radial prestressed steel wire is wound on the surface of the outer concrete 5 to form a prestressed steel wire layer 4, so that a novel infusion pipeline main body structure is formed.
Further, a mortar protection layer 3 is arranged between the prestressed steel wire layer 4 and the steel pipe 2. Mortar is filled between the prestressed steel wire layer 4 and the steel pipe 2 to form a mortar protective layer 3, and meanwhile, the corrosion resistance of the prestressed steel wire is improved.
The invention relates to a novel high-strength anti-corrosion concrete filled steel tube pier applied to offshore buildings, which is manufactured by the following steps:
(1) welding a plurality of steel cylinder bodies 61 to form a spiral hole screen type steel cylinder 6, and arranging through hole sections 62 and spiral line sections 63 at intervals on the formed spiral hole screen type steel cylinder, hanging the bound reinforcement cage 7 into the spiral hole screen type steel cylinder 6, binding connecting reinforcements 71 on the reinforcement cage 7, and enabling the connecting reinforcements 71 to penetrate through partial through holes 64 and extend to the outside of the spiral hole screen type steel cylinder 6;
(2) building an external mould according to the size of the outer layer concrete 5, simultaneously pouring the outer layer concrete 5 and the inner layer concrete 8, carrying out high-frequency strong vibration on the poured concrete in the pouring process, dismantling the mould when the outer layer concrete 5 meets the strength requirement, and carrying out steam curing and demoulding on the tube cores of the poured outer layer concrete 5 and the inner layer concrete 8;
(3) winding a plurality of layers of circumferentially and longitudinally combined prestressed wires on the outer surface of the outer concrete 5 formed in the step (2) to form a prestressed wire layer 4, and hoisting the steel pipe 2 outside the outer concrete 5 to enable the formed concrete pier to be positioned inside the steel pipe 2;
(4) mortar is poured between the steel pipe 2 and the prestressed wire layer 4 to form the mortar protective layer 3;
(5) the outer portion of the steel pipe 2 is sprayed with multiple layers of graphene to form a graphene anticorrosive coating 1, and a plurality of zinc blocks 9 are arranged on the outer surface of the graphene anticorrosive coating 1.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (7)
1. The novel high-strength anti-corrosion concrete-filled steel tube pier applied to the offshore building is characterized by comprising a spiral hole sieve type steel tube (6), wherein a steel tube (2) is sleeved outside the spiral hole sieve type steel tube (6), and a graphene anti-corrosion coating (1) is arranged outside the steel tube (2); the spiral hole sieve type steel cylinder (6) and the outer layer concrete (5) are poured between the steel pipes (2), a steel reinforcement cage (7) is arranged in the spiral hole sieve type steel cylinder (6), and the inner layer concrete (8) is poured on the inner side of the spiral hole sieve type steel cylinder (6).
2. The novel high-strength anti-corrosion concrete-filled steel tube pier applied to the offshore structure according to claim 1, wherein: and a zinc block (9) is arranged on the outer surface of the graphene anti-corrosion coating (1).
3. The novel high-strength anti-corrosion concrete-filled steel tube pier applied to the offshore structure according to claim 1, wherein: spiral hole sieve formula steel cylinder (6) include a plurality of steel cylinder body (61), steel cylinder body (61) include through-hole section (62) and spiral line section (63), adjacent two steel cylinder body (61) fixed connection, through-hole section (62) with spiral line section (63) interval sets up.
4. The novel high-strength anti-corrosion concrete-filled steel tube pier applied to the offshore structure according to claim 3, wherein: a plurality of through holes (64) are circumferentially formed in the through hole section (62), the spiral thread section (63) is provided with spiral threads (65), and the spiral threads (65) are fixed on the inner wall of the steel cylinder body (61).
5. The novel high-strength anti-corrosion concrete-filled steel tube pier applied to the offshore structure according to claim 4, wherein: connecting steel bars (71) are bound on the surface of the steel reinforcement cage (7), and the connecting steel bars (71) penetrate through the through holes (64) in the through hole section (62) and extend into the outer concrete (5).
6. The novel high-strength anti-corrosion concrete-filled steel tube pier applied to the offshore structure according to claim 1, wherein: and prestressed steel wires are arranged between the outer concrete layer (5) and the steel pipe (2), and are wound on the outer surface of the outer concrete layer (5) in an annular and longitudinal combined mode to form a prestressed steel wire layer (4).
7. The novel high-strength anti-corrosion concrete-filled steel tube pier applied to offshore structures according to claim 6, is characterized in that: and a mortar protective layer (3) is arranged between the prestressed steel wire layer (4) and the steel pipe (2).
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CN202011525892.9A CN112538816A (en) | 2020-12-22 | 2020-12-22 | Be applied to marine building's novel anticorrosive steel pipe concrete pier that excels in |
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CN202011525892.9A CN112538816A (en) | 2020-12-22 | 2020-12-22 | Be applied to marine building's novel anticorrosive steel pipe concrete pier that excels in |
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CN106869015A (en) * | 2017-02-21 | 2017-06-20 | 南昌大学 | A kind of FRP pipes cast-in-place with half half prefabricated regeneration concrete prestressing force overlapping bridge pier and preparation method |
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CN110743766A (en) * | 2019-11-08 | 2020-02-04 | 江苏科盾检测技术有限公司 | Natural gas pipeline corrosion prevention method |
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2020
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CN214033342U (en) * | 2020-12-22 | 2021-08-24 | 沈阳建筑大学 | Be applied to marine building's novel anticorrosive steel pipe concrete pier that excels in |
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