CN203361135U - Adapter protection structure of corrosion-resistant hollow square pile - Google Patents
Adapter protection structure of corrosion-resistant hollow square pile Download PDFInfo
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- CN203361135U CN203361135U CN 201320308186 CN201320308186U CN203361135U CN 203361135 U CN203361135 U CN 203361135U CN 201320308186 CN201320308186 CN 201320308186 CN 201320308186 U CN201320308186 U CN 201320308186U CN 203361135 U CN203361135 U CN 203361135U
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Abstract
The utility model discloses an adapter protection structure of a corrosion-resistant hollow square pile. The adapter of the square pipe is provided with end plates and apron boards. The end plates are welded together. The protection structure comprises corrosion-resistant coatings and/or cathode cushion blocks, wherein the cathode cushion blocks are pre-buried in the end portions of the hollow square pile. The corrosion-resistant coatings coat an adapter of the square pipe and cover the end plates and welding places of the end plates. According to the adapter protection structure of the square pipe, the cathode protection technology and the corrosion-resistant coating technology are utilized, one or more kinds of protection structures can be adopted according to different corrosion-resistant circumstances and types, thus, durability and the corrosion-resistance performance of the adapter of the square pile can be improved, the problem of the service life of concrete or reinforced concrete in corrosive media and environments is solved and thus, safety of building materials and a building foundation is improved.
Description
Technical field
The utility model relates to building material field, specifically belongs to a kind of protection of welded joints structure that relates to the hollow square pile of corrosion-resistant and durability.
Background technology
China is vast in territory, marine environment is different and weather is various, damp and hot, carbonization and chlorine salt corrosion as the southeastern coastal areas, the freeze thawing of Northern Coastal Provinces, carbonization and chlorine salt corrosion, dry and cold, xeothermic, the villaumite of western Salt Lake Area and sulphate corrosion, these all make the mode of failure of precast concrete general, various and complicated.
In the Second Committee concrete durability international conference of holding in 1991, Metha points out " world today; the main cause that concrete component destroys is successively decreased and put in order by importance: the physics chemical action of corrosion of steel bar, freeze thawing circulation, erosion environment " in the report that is entitled as " concrete durability-50 year progress ", that is to say, corrosion is one of principal element affected concrete durability, and corrosion comprises acid, alkali, the concrete corrosion of salt pair usually.
With cast-in-situ concrete, compare, precast concrete is about research and the correlation technique exploitation wretched insufficiency of corrosion resistance, durability.2006, combined a research by Zhongshan Sanhe Building Materials Co., Ltd., Shenzhen Graduate School of Tsinghua University, material engineering research institute of Tongji University, this research thinks now widely used and mixes levigate sand, adopts the durability of prestress high intensity concrete stake of steam pressure explained hereafter lower, is not suitable for the pile foundation engineering that, chloride-penetration resistance freeze proof for having under the drying and watering cycle condition and sulphate corrosion etc. require.The eighties in 20th century, Mehta and Gerwick have investigated the beam body that San Francisco Bay San Mateo-Hayward bridge is corroded, and the single cement consumption of this beam body concrete is 370kg, and wherein a part of beam adopts stream curing, and a part of beam adopts natural curing.After the exposure of 17 years, adopt steam-cured beam corrosion to occur and had to be repaired, and the sign of any corrosion does not also appear in the beam of natural curing.The people's such as Detwiler result of study shows, the ability of the maintenance meeting reduction portland cement concrete chloride-penetration resistance under higher temperature, and the corrosion resistance problem more easily occurs than the member of natural curing in this explanation steamed concrete member.
Precast concrete hollow square pile end is connected by end plate, and welded in joint, but the joint of square pile can be subject to the corrosion of external environment or corrosive medium, if do not carry out anticorrosion and waterproofing work, can have influence on like this application life of square pile.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of protection of welded joints structure of corrosion-resistant hollow square pile, and anti-corrosion protection is carried out at welding position and mechanical connection position that can the other side's pile joint place, improves the corrosion resistance of square pile junction.
For solving the problems of the technologies described above, the protection of welded joints structure of the corrosion-resistant hollow square pile that the utility model provides, the joint of described square pile is provided with end plate and skirtboard, end plate welds together, described safeguard structure comprises corrosion-inhibiting coating and/or negative electrode cushion block, wherein the negative electrode cushion block is embedded in the end of hollow square pile in advance, and corrosion-inhibiting coating is coated on the joint of square pile and the weld of end plate and end plate is enclosed in to its inside.
Preferably, described negative electrode cushion block is embedded in the intersection of end plate, skirtboard and square pile end in advance.
Wherein, described corrosion-inhibiting coating comprises rustproof paint, organosilicon osmosis type coating, epoxy resin, polyurethane water-proof paint and pitch.The molding mode of described corrosion-inhibiting coating is surface filming formula, infiltration type or closed.
The square pile protection of welded joints structure that the utility model provides; adopt cathode protection technology and corrosion-inhibiting coating technology; can be according to different corrosive environments and classification; adopt one or more protection structures; so just can improve durability and the decay resistance of square pile joint; solve concrete or the application life problem of steel concrete in corrosive medium and environment, the safety of constructional materials and building foundation is improved.
The accompanying drawing explanation
Accompanying drawing is the schematic diagram of protection of welded joints structure of the present utility model.
Wherein description of reference numerals is as follows:
1 is square pile; 2 is end plate; 3 is skirtboard; 4 is weld; 5 is the negative electrode cushion block; 6 is corrosion-inhibiting coating.
The specific embodiment
Below in conjunction with accompanying drawing and the specific embodiment, the utility model is described in further detail.
The protection of welded joints structure of the corrosion-resistant hollow square pile that the utility model provides, as shown in drawings, the joint of described square pile 1 is provided with end plate 2 and skirtboard 3, and end plate 2 welds together, and square pile is connected with mechanical connection manner by welding manner.Described safeguard structure comprises corrosion-inhibiting coating 6 and/or negative electrode cushion block 5, and wherein negative electrode cushion block 5 is embedded in the end of hollow square pile 1 in advance, and corrosion-inhibiting coating 6 is coated on the joint of square pile 1 and the weld of end plate 2 and end plate 4 is enclosed in to its inside.The square pile joint can adopt separately the protection method of corrosion-inhibiting coating according to different corrosive environments and classification, also can adopt separately the protection method of negative electrode cushion block, can also adopt the mode of the two combination.
By the electrochemical corrosion principle, can be obtained, the corrosion rate of weld 4 is not more than the corrosion rate of end plate 2, total throat thickness of end plate 2 should meet every mechanical property of square pile simultaneously, therefore in order to guarantee that corrosion-resistant hollow square pile meets the required mechanical property of corrosion-resistant hollow square pile in the designed corrosion time limit, need to design according to correlative factor the throat thickness of end plate.End plate can be reserved corrosion thickness according to design period and the corrosion-resistant scheme adopted, and increases throat thickness.Improve corrosive nature and the endurance quality of corrosion-resistant hollow square pile.Varying environment situation and stake type, its corrosion rate and corrosion thickness (according to the rule formula in " port works Code for design of steel structures ", being designed) are as follows:
Conventional coating initial stage coating damage coefficient should be: in water 1%～2%, in mud 25%～50%, the coating damage rate be annual increase by 1%～3%.Protected area should comprise metal construction in water and the area in mud, and should consider to affect the area (comprising end plate, reinforcing bar pier nose etc.) of other metal construction of metal construction cathodic protection effect.According to the end plate thickness of square pile and the width of skirtboard, each termination of square pile of the various length of sides is calculated result of calculation (being designed according to the rule formula in " Hydraulic Metal anti-corrosion code ") as follows with the area contacted of water.
Therefore; cathodic protection is that the skirtboard that sacrificial anode is made suitable thickness according to different quality (increases thickness of slab; meet welding and connection request) (thickness is below 1.5mm to replace original skirtboard; can't meet the requirements such as welding and connection); be used for guaranteeing laying of negative electrode cushion block, the sacrificial anode quality (being designed according to the rule formula) of the utility model design is as follows:
Preferably, as shown in the figure, negative electrode cushion block 5 is embedded in the intersection of end plate 2, skirtboard 3 and square pile 1 end in advance.
Wherein, corrosion-inhibiting coating comprises rustproof paint, organosilicon osmosis type coating, epoxy resin, polyurethane water-proof paint and pitch, and wherein organosilicon osmosis type coating can be penetrated in concrete hole.The formation method of this corrosion-inhibiting coating is surface filming formula, infiltration type or closed, wherein the surface filming formula is that corrosion-inhibiting coating forms protecting film on the square pile surface, play the effect be hedged off from the outer world, infiltration type is that corrosion-inhibiting coating penetrates into pile body inside, tamp the capillary hole of pile body, make pile body surface more closely knit, external substance can't infiltrate into its inside, and closed be the combination of surface filming formula and infiltration type, best results.
The square pile protection of welded joints structure that the utility model provides; adopt cathode protection technology and corrosion-inhibiting coating technology; can be according to different corrosive environments and classification; adopt one or more protection structures; so just can improve durability and the decay resistance of square pile joint; solve concrete or the application life problem of steel concrete in corrosive medium and environment, the safety of constructional materials and building foundation is improved.
Abovely by specific embodiment, the utility model is had been described in detail, this embodiment is only preferred embodiment of the present utility model, and it is not limited the utility model.In the situation that do not break away from the utility model principle, equivalent replacement and improvement that those skilled in the art makes type, position and the structure of protection of welded joints structure of the present utility model, in the technology category that all should be considered as protecting at the utility model.
Claims (4)
1. the protection of welded joints structure of a corrosion-resistant hollow square pile, the joint of described square pile is provided with end plate and skirtboard, end plate welds together, it is characterized in that, described safeguard structure comprises corrosion-inhibiting coating and/or negative electrode cushion block, wherein the negative electrode cushion block is embedded in the end of hollow square pile in advance, and corrosion-inhibiting coating is coated on the joint of square pile and the weld of end plate and end plate is enclosed in to its inside.
2. the protection of welded joints structure of corrosion-resistant hollow square pile according to claim 1, is characterized in that, described negative electrode cushion block is embedded in the intersection of end plate, skirtboard and square pile end in advance.
3. the protection of welded joints structure of corrosion-resistant hollow square pile according to claim 1, is characterized in that, described corrosion-inhibiting coating comprises rustproof paint, organosilicon osmosis type coating, epoxy resin, polyurethane water-proof paint and pitch.
4. the protection of welded joints structure of corrosion-resistant hollow square pile according to claim 3, is characterized in that, the molding mode of described corrosion-inhibiting coating is surface filming formula, infiltration type or closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320308186 CN203361135U (en) | 2013-05-30 | 2013-05-30 | Adapter protection structure of corrosion-resistant hollow square pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320308186 CN203361135U (en) | 2013-05-30 | 2013-05-30 | Adapter protection structure of corrosion-resistant hollow square pile |
Publications (1)
| Publication Number | Publication Date |
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| CN203361135U true CN203361135U (en) | 2013-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320308186 Withdrawn - After Issue CN203361135U (en) | 2013-05-30 | 2013-05-30 | Adapter protection structure of corrosion-resistant hollow square pile |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334425A (en) * | 2013-05-30 | 2013-10-02 | 上海大禺预制构件有限公司 | Joint protection structure of anti-corrosion hollow square pile |
| TWI625448B (en) * | 2014-08-08 | 2018-06-01 | Centrifugal pre-tensioned prestressed concrete foundation with anti-corrosion function |
-
2013
- 2013-05-30 CN CN 201320308186 patent/CN203361135U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334425A (en) * | 2013-05-30 | 2013-10-02 | 上海大禺预制构件有限公司 | Joint protection structure of anti-corrosion hollow square pile |
| CN103334425B (en) * | 2013-05-30 | 2015-07-15 | 上海大禺预制构件有限公司 | Joint protection structure of anti-corrosion hollow square pile |
| TWI625448B (en) * | 2014-08-08 | 2018-06-01 | Centrifugal pre-tensioned prestressed concrete foundation with anti-corrosion function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131225 Effective date of abandoning: 20150715 |
|
| RGAV | Abandon patent right to avoid regrant |