CN202787526U - Waterproof old and new concrete joint structure - Google Patents
Waterproof old and new concrete joint structure Download PDFInfo
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- CN202787526U CN202787526U CN 201220342264 CN201220342264U CN202787526U CN 202787526 U CN202787526 U CN 202787526U CN 201220342264 CN201220342264 CN 201220342264 CN 201220342264 U CN201220342264 U CN 201220342264U CN 202787526 U CN202787526 U CN 202787526U
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Abstract
The utility model relates to a waterproof old and new concrete joint structure. The waterproof old and new concrete joint structure is characterized in that a waterproof cement mortar layer and a polypropylene fiber micro-expansion concrete transition layer are sequentially poured between old concrete and new concrete, the old concrete is perforated for injection of chemical anchoring adhesive, buried metal waterproof strips and a connection steel bar penetrate through and are arranged in the old concrete, the waterproof cement mortar layer, the polypropylene fiber micro-expansion concrete transition layer and the new concrete, and the buried metal waterproof strips are arranged above and below the connection steel bar respectively and wrapped by carbon fiber cloth. The waterproof old and new concrete joint structure is fine in old and new concrete engagement effect, high in adhesion and friction force, fine in waterproof and quake-proof effect, enables coordination deformation of the old and new concrete, meets the waterproof and bearing requirements of old and new concrete joints, and has high technical and economic benefits.
Description
Technical field
The utility model relates to a kind of new-old concrete weather check structure, particularly a kind of waterproof, antidetonation, carrying and the cooperative transformation new-old concrete weather check structure of having relatively high expectations.Belong to building engineering field, be applicable to the new-old concrete seam constructions such as body of wall.
Background technology
The seam construction of new-old concrete extensively is present in reinforcing, repairing and the new construction of concrete structure, compares with the monobloc cast concrete structure, has following weakness: the concrete tension of bonding surface, shear strength reduce; Condensing, the elastic deformation of as placed concrete, plastic strain etc. there are differences with original concrete, produce easily the crack; Impervious on the bonding surface, anti-freezing property reduction etc.
The factor that affects the new-old concrete bond quality has: new-old concrete type of attachment and the Disposal quality that contacts direction, original concrete joint face, whether smear bonding adhesive on the contact surface, the strength grade of newly placed concrete and the slump, the maintenance of newly placed concrete etc.
New-old concrete is in conjunction with not only requiring bond strength high, and take off and splits at the bonding surface place will avoid new-old concrete to shrink the time.Because the contraction of old concrete is finished, be prone at new-old concrete bonding surface place and shear or draw crack.Cause the new-old concrete can not collaborative work, and the impermeability of steel concrete, durability etc. are produced serious harm.
Reliability and durability in order to ensure the new-old concrete cooperative bearing, need to take suitable technique and construction measure, to improve the adhesion strength of new-old concrete, reduce the shrinkage strain of rear pouring concrete etc., satisfy new-old concrete waterproof, antidetonation, carrying and cooperative transformation requirement.
Because the quality of new-old concrete combination directly affects the quality of enlarging, maintenance and reinforcement, in recent years, new-old concrete be one of focus of studying in conjunction with problem.Obtained certain achievement for the measure of the bonding mechanism of new-old concrete, failure mechanism, interfacial agents, increase snap-in force, the measure that increases bond, measure and construction requirement and the control main points etc. of increasing friction force.But the new-old concrete weather check structural research that waterproof, antidetonation, carrying and cooperative transformation are had relatively high expectations is still few.
In sum, the quality that assurance new-old concrete intensity and concrete interface are processed etc. is the key of new-old concrete combination, and engineering construction quality and structure functional performance are had direct impact.Need at present that invention a kind of easy construction, speed of application are fast badly, waterproof, impervious, freeze proof, antidetonation, carrying and the good new-old concrete weather check structure of cooperative transformation performance.
Summary of the invention
The purpose of this utility model is the problem for the prior art existence, a kind of new-old concrete weather check structure is provided, utilize waterproof, stressed and load-carrying properties all good in the materials such as buried metallic water stop band, carbon cloth, polypropylene fibre slightly expanded concrete, have that easy construction, speed of application are fast, waterproof, impervious, freeze proof, antidetonation, carrying and good characteristics of cooperative transformation performance.
In order to realize above-mentioned technical purpose, the utility model has adopted following technical scheme:
A kind of new-old concrete weather check structure is characterized in that pouring into a mould successively waterproof cement mortar layer, polypropylene fibre slightly expanded concrete transition zone between old concrete and as placed concrete; And in old concrete, punch buried metallic water stop band, connecting reinforcement during perforation arranges between old concrete, waterproof cement mortar layer, polypropylene fibre slightly expanded concrete transition zone, as placed concrete.
Buried metallic water stop band is respectively established one deck in the upper and lower parts of connecting reinforcement in described, and the outer wrapping carbon cloth.
The hole domestic demand of described old concrete is injected chemical anchoring glue.
New-old concrete weather check structure of the present utility model arranges buried metallic water stop band in the double-deck outsourcing carbon cloth, in the time of its performance waterproof effect, has the reinforced action that strengthens the new-old concrete connection and work in coordination with load-carrying properties; The setting of connecting reinforcement also can improve connection and the cooperative bearing performance of new-old concrete; The old concrete surface is fully soaked with the setting of waterproof cement mortar and can be avoided the old concrete structure to absorb the moisture of young concrete and the water resistance of raising seam; The setting of polypropylene fibre slightly expanded concrete transition zone can be avoided the appearance such as crack, and has good load-carrying properties, and the structure that the utility model relates to is compared with the conventional seams structure has good technical economic benefit.
Description of drawings
Fig. 1 is a kind of new-old concrete weather check section of structure;
Among the figure: 1-old concrete, 2-as placed concrete, 3-dabbing slot, 4-waterproof cement mortar layer, buried metallic water stop band among the 5-, 6-carbon cloth, 7-connecting reinforcement, 8-polypropylene fibre slightly expanded concrete transition zone.
Specific embodiment
The dabbing on old concrete surface, in slip casting in the hole of buried metallic water stop band and connecting reinforcement, template install and newly build in the content present embodiments such as technological parameter, key Quality Control of mortar, polypropylene fibre slightly expanded concrete and be not repeated, emphasis is set forth the embodiment that the utility model relates to structure.
Fig. 1 is new-old concrete weather check section of structure, and with reference to shown in Figure 1, a kind of new-old concrete weather check structure is poured into a mould waterproof cement mortar layer 4, polypropylene fibre slightly expanded concrete transition zone 8 successively between old concrete 1 and as placed concrete 2; And punching in old concrete 1, buried metallic water stop band 5, connecting reinforcement 7 during perforation arranges between old concrete 1, waterproof cement mortar layer 4, polypropylene fibre slightly expanded concrete transition zone 8, as placed concrete 2.
Cut a hole into first dabbing slot 3 in old concrete 1 working face.
In buried metallic water stop band 5 arrange 2 layers, lay respectively at the up and down position of connecting reinforcement 7, and outer wrapping carbon cloth 6, during carbon cloth 6 is pasted on the buried metallic water stop band 5.
In buried metallic water stop band 5 to adopt width be that 400mm, thickness are the corrosion resistant plate waterstop of 5mm, in buried metallic water stop band 5 lap length be 50mm, adopt two-sided welding, two ends all should full weld.
The technical data of carbon cloth 6 is 300g/m
2, theoretic throat is 0.167mm, tensile strength 〉=3000 MPa, modulus of elasticity 〉=210 GPa, elongation rate 〉=1.5%.
In buried metallic water stop band 5 and connecting reinforcement 7, after in old concrete 1, drawing the hole, imbed, inject chemical anchoring glue in the hole.It is that 12mm, length are the reinforcing bar of 400m that connecting reinforcement 7 adopts diameter.
Waterproof cement mortar layer 4, polypropylene fibre slightly expanded concrete transition zone 8 and the construction of as placed concrete 2 continuous placings.
The strength grade of old concrete 1 is C25, and waterproof cement mortar layer 4 adopts M30, and polypropylene fibre slightly expanded concrete transition zone 8 and as placed concrete 2 adopt the C30 label.The thickness of waterproof cement mortar layer 4 is 30mm, polypropylene fibre slightly expanded concrete transition zone 8 length 500mm.
Described a kind of new-old concrete weather check structure, its construction sequence comprises:
1) old concrete 1 interface is strictly cleared up, cut a hole into dabbing slot 3;
2) buried metallic water stop band 5 sizes and profile in precasting yard or on-the-spot basis, during carbon cloth 6 is pasted on the buried metallic water stop band 5, according in the flow process construction of buried metallic water stop band 5 surfacings → priming operation resin → levelling sticking veneer → affixing carbon fabric 6.
3) in old concrete 1, draw hole, clear hole after, imbed outsourcing carbon cloth 6 in buried metallic water stop band 5 and connecting reinforcement 7, and in the hole, inject chemical anchoring glue;
4) old concrete 1 surface is fully soaked;
5) lay template, successively continuous placing waterproof cement mortar layer 4, polypropylene fibre slightly expanded concrete 8 transition zones and as placed concrete 2;
6) by after the design maintenance, stripping.
Claims (3)
1. a new-old concrete weather check structure is characterized in that pouring into a mould successively waterproof cement mortar layer, polypropylene fibre slightly expanded concrete transition zone between old concrete and as placed concrete; And in old concrete, punch buried metallic water stop band, connecting reinforcement during perforation arranges between old concrete, waterproof cement mortar layer, polypropylene fibre slightly expanded concrete transition zone, as placed concrete.
2. a kind of new-old concrete weather check structure according to claim 1, buried metallic water stop band is respectively established one deck in the upper and lower parts of connecting reinforcement in it is characterized in that, and the outer wrapping carbon cloth.
3. a kind of new-old concrete weather check structure according to claim 1 is characterized in that injecting chemical anchoring glue in the hole of old concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220342264 CN202787526U (en) | 2012-07-16 | 2012-07-16 | Waterproof old and new concrete joint structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220342264 CN202787526U (en) | 2012-07-16 | 2012-07-16 | Waterproof old and new concrete joint structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202787526U true CN202787526U (en) | 2013-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220342264 Expired - Fee Related CN202787526U (en) | 2012-07-16 | 2012-07-16 | Waterproof old and new concrete joint structure |
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| CN (1) | CN202787526U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105888082A (en) * | 2016-04-29 | 2016-08-24 | 陆庆祥 | Method for seamless connection of concrete of new and old buildings |
| CN106436774A (en) * | 2016-12-02 | 2017-02-22 | 苏州设计研究院股份有限公司 | Underground engineering reserved deformation joint connecting interface structure and manufacturing method thereof |
| CN108660950A (en) * | 2018-06-28 | 2018-10-16 | 张维秀 | A kind of road and bridge crack reparation fixing device |
| CN110067311A (en) * | 2019-05-14 | 2019-07-30 | 长江勘测规划设计研究有限责任公司 | The connection structure and method of new-old concrete component junction |
| CN112609746A (en) * | 2020-12-11 | 2021-04-06 | 中国建筑第五工程局有限公司 | New and old basement joint concrete waterproof component and construction method thereof |
| CN114960978A (en) * | 2022-05-01 | 2022-08-30 | 上海宝冶集团有限公司 | Waterproof method for concrete abutted seam without reserved embedded structure in reconstruction and extension structure |
| CN115182387A (en) * | 2022-06-13 | 2022-10-14 | 武汉三源特种建材有限责任公司 | New and old concrete interface waterproof structure and construction method |
| CN115217156A (en) * | 2022-08-25 | 2022-10-21 | 苏州建设(集团)规划建筑设计院有限责任公司 | Waterproof structure at joint of new concrete and old concrete and construction method thereof |
-
2012
- 2012-07-16 CN CN 201220342264 patent/CN202787526U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105888082A (en) * | 2016-04-29 | 2016-08-24 | 陆庆祥 | Method for seamless connection of concrete of new and old buildings |
| CN105888082B (en) * | 2016-04-29 | 2018-08-14 | 陆庆祥 | A kind of new and old building concrete joins seamless method |
| CN106436774A (en) * | 2016-12-02 | 2017-02-22 | 苏州设计研究院股份有限公司 | Underground engineering reserved deformation joint connecting interface structure and manufacturing method thereof |
| CN108660950A (en) * | 2018-06-28 | 2018-10-16 | 张维秀 | A kind of road and bridge crack reparation fixing device |
| CN108660950B (en) * | 2018-06-28 | 2020-02-18 | 张维秀 | Fixing device is restoreed in road and bridge crack |
| CN110067311A (en) * | 2019-05-14 | 2019-07-30 | 长江勘测规划设计研究有限责任公司 | The connection structure and method of new-old concrete component junction |
| CN110067311B (en) * | 2019-05-14 | 2024-04-12 | 长江勘测规划设计研究有限责任公司 | Connection structure and method for joint of new and old concrete members |
| CN112609746A (en) * | 2020-12-11 | 2021-04-06 | 中国建筑第五工程局有限公司 | New and old basement joint concrete waterproof component and construction method thereof |
| CN114960978A (en) * | 2022-05-01 | 2022-08-30 | 上海宝冶集团有限公司 | Waterproof method for concrete abutted seam without reserved embedded structure in reconstruction and extension structure |
| CN115182387A (en) * | 2022-06-13 | 2022-10-14 | 武汉三源特种建材有限责任公司 | New and old concrete interface waterproof structure and construction method |
| CN115182387B (en) * | 2022-06-13 | 2024-04-09 | 武汉三源特种建材有限责任公司 | Waterproof structure of new and old concrete interface and construction method |
| CN115217156A (en) * | 2022-08-25 | 2022-10-21 | 苏州建设(集团)规划建筑设计院有限责任公司 | Waterproof structure at joint of new concrete and old concrete and construction method thereof |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20190716 |