CN211079803U - Longitudinal construction joint structure - Google Patents
Longitudinal construction joint structure Download PDFInfo
- Publication number
- CN211079803U CN211079803U CN201920428691.3U CN201920428691U CN211079803U CN 211079803 U CN211079803 U CN 211079803U CN 201920428691 U CN201920428691 U CN 201920428691U CN 211079803 U CN211079803 U CN 211079803U
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- CN
- China
- Prior art keywords
- concrete surface
- construction joint
- dowel steel
- joint
- surface course
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- Expired - Fee Related
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Abstract
The utility model discloses a vertical construction joint structure, including two adjacent concrete surface courses of level, the upper surface of two concrete surface courses keeps the parallel and level, forms the construction joint between two concrete surface courses, be provided with the joint board in the construction joint, still including crossing the dowel steel of construction joint, the one end of dowel steel is buried in one of them concrete surface course, is provided with the sleeve pipe in another concrete surface course, the other end of dowel steel is inserted and is established in the cover intraductally. This vertical construction joint structure forms the construction joint between two concrete surface courses, and the dowel steel crosses the construction joint, increases the stress transfer between two concrete surface courses, and transfer stress makes the common atress of adjacent concrete surface course, prevents that concrete surface course local atress is great, causes the road surface inhomogeneous settlement, and is sound construction, and the sleeve pipe also can improve the concrete surface course when expend with heat and contract with cold, and the dowel steel is to the destruction of concrete surface course, and difficult vertical crack that produces is durable and safe.
Description
Technical Field
The utility model relates to a road construction technical field especially relates to a vertical construction joint structure.
Background
In the construction process of the road concrete surface layer, construction joints need to be laid according to the requirements of design drawings, and the construction joints refer to joints formed between the concrete poured before and after due to the sectional pouring required by the design requirements or the construction in the concrete pouring process. The construction joint is not a real existing joint, and only because the initial setting time of the first poured concrete is longer than the initial setting time, a joint surface exists between the first poured concrete and the later poured concrete, and the joint surface is called as the construction joint.
In recent years, with the development of economic society, the traffic volume is rapidly increased, the number frequency of heavy vehicles and the load grade of automobiles are greatly improved compared with the prior art, the local stress of a concrete pavement is easy to be larger, the concrete pavement is not uniformly settled, longitudinal cracks are formed, the durability and the operation safety of the concrete pavement are adversely affected, and the longitudinal construction joint structure is required to be improved in order to ensure the safety of traffic operation.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a vertical construction joint structure, which is not easy to generate vertical cracks, firm in structure, durable and safe.
The utility model provides a technical scheme that its technical problem adopted does:
the utility model provides a vertical construction joint structure, includes the adjacent concrete surface course of two levels, and the upper surface of two concrete surface courses keeps the parallel and level, forms the construction joint between two concrete surface courses, be provided with the joint board in the construction joint, still including the dowel steel that crosses the construction joint, the one end of dowel steel is buried in one of them concrete surface course, is provided with the sleeve pipe in another concrete surface course, the other end of dowel steel is inserted and is established in the sleeve pipe.
As an improvement of the technical scheme, stirrups are embedded in the concrete surface layer.
As an improvement of the technical scheme, the sleeve is provided with a closed end, and a gap exists between the other end of the dowel bar and the closed end of the sleeve.
As an improvement of the above technical solution, the gap is filled with a buffer.
As an improvement of the technical scheme, the buffer is cotton yarn.
As an improvement of the technical scheme, the outer surface of the dowel bar is coated with an asphalt layer.
As an improvement of the technical scheme, the asphalt layer is wrapped with a film.
As an improvement of the technical scheme, the joint board is an asphalt fiberboard.
As an improvement of the technical scheme, joint filling materials are further arranged in the construction joints and are located above the joint plates.
The beneficial effects of the utility model are that:
this vertical construction joint structure forms the construction joint between two concrete surface courses, the dowel steel crosses the construction joint, one end is fixed to be buried in one of them concrete surface course, the other end is inserted and is established in the cover of another concrete surface course, increase the stress transfer between two concrete surface courses, transmission stress makes the common atress of adjacent concrete surface course, it is great to prevent concrete surface course local atress, cause the road surface inhomogeneous settlement, moreover, the steam generator is firm in structure, the sleeve pipe also can improve the concrete surface course when expend with heat and contract with cold, the destruction of dowel steel to the concrete surface course, be difficult for producing vertical crack, it is durable and safe.
Drawings
The present invention will be further described with reference to the accompanying drawings and specific embodiments, wherein:
fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
Referring to fig. 1, the utility model discloses a vertical construction joint structure, including two adjacent concrete surface course 1 of level, the upper surface of two concrete surface course 1 keeps the parallel and level, guarantees the road surface and levels, bury stirrup 6 underground in the concrete surface course 1, stirrup 6 is square, along vertical interval arrangement, and stirrup 6 plays the effect of reinforcing concrete surface course 1. A construction joint 2 is formed between the two concrete surface layers 1.
Wherein, be provided with joint plate 3 and joint compound 8 in the construction joint 2, joint compound 8 is located the top of joint plate 3, joint compound 8 is polyurethane joint compound, and the top of joint compound 8 keeps the parallel and level with the upper surface of concrete surface course 1, joint plate 3 is the pitch fiberboard, can fix the distance of construction joint 2.
Still be provided with dowel steel 4 between two concrete surface course 1, dowel steel 4 crosses construction joint 2 and joint board 3, and joint board 3 can also fix dowel steel 4, and in one of them concrete surface course 1 was buried to the one end of dowel steel 4 is fixed, is provided with sleeve pipe 5 in another concrete surface course 1, the other end of dowel steel 4 is inserted and is established in sleeve pipe 5, and dowel steel 4 increases the stress transfer between two concrete surface course 1, and the transmission stress makes adjacent concrete surface course 1 atress jointly, prevents that 1 local atress of concrete surface course is great, causes the road surface inhomogeneous settlement, and sturdy structure.
Wherein, as shown in fig. 1, sleeve pipe 5 has the closed end, there is the space between the other end of dowel steel 4 and the blind end of sleeve pipe 5, the space intussuseption is filled with buffer 7, and in this embodiment, buffer 7 specifically is the cotton yarn, can cushion dowel steel 4, makes it not rock, and sleeve pipe 5 also can improve concrete surface course 1 when expend with heat and contract with cold, and dowel steel 4 is to the destruction of concrete surface course 1, and trace displacement can take place in the space for dowel steel 4, and buffer 7 can cushion dowel steel 4, makes it not rock, is difficult for producing vertical crack between the concrete surface course 1, and is durable and safe.
The surface coating of dowel steel 4 has the pitch layer, and specific coating region is the region of dowel steel 4 and another concrete surface course 1 and the contact of construction joint 2, and the one end of dowel steel 4 is because fixed embedding in one of them concrete surface course 1, can not coat the pitch layer, and the pitch layer can prevent that dowel steel 5 from rustting, the parcel has the film on the pitch layer, and the film has the effect of keeping apart concrete surface course 1 and dowel steel 4, can also reach the purpose of buffering, and the film specifically can adopt the PE film.
The above description is only a preferred embodiment of the present invention, but the present invention is not limited to the above embodiments, and the technical effects of the present invention should be all included in the protection scope of the present invention as long as the technical effects are achieved by any of the same or similar means.
Claims (4)
1. The utility model provides a vertical construction joint structure, includes the adjacent concrete surface course of two levels, its characterized in that: the upper surface of two concrete surface layers keeps the parallel and level, forms the construction joint between two concrete surface layers, be provided with the joint board in the construction joint, the joint board is the pitch fiberboard, still includes the dowel steel that crosses the construction joint, the one end of dowel steel is buried in one of them concrete surface layer, is provided with the sleeve pipe in another concrete surface layer, the other end of dowel steel is inserted and is established in the cover intraductally, the sleeve pipe has the closed end, there is the space between the other end of dowel steel and the sheathed tube blind end, the space intussuseption is filled with the buffer, the surface coating of dowel steel has the pitch layer, the parcel has the film on the pitch layer.
2. A longitudinal construction joint structure according to claim 1, wherein: and stirrups are embedded in the concrete surface layer.
3. A longitudinal construction joint structure according to claim 1, wherein: the buffer is cotton yarn.
4. A longitudinal construction joint structure according to claim 1, wherein: still be provided with joint filler in the construction joint, joint filler is located the top of seam board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920428691.3U CN211079803U (en) | 2019-03-29 | 2019-03-29 | Longitudinal construction joint structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920428691.3U CN211079803U (en) | 2019-03-29 | 2019-03-29 | Longitudinal construction joint structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211079803U true CN211079803U (en) | 2020-07-24 |
Family
ID=71642364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920428691.3U Expired - Fee Related CN211079803U (en) | 2019-03-29 | 2019-03-29 | Longitudinal construction joint structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211079803U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113186769A (en) * | 2021-04-22 | 2021-07-30 | 中冶南方城市建设工程技术有限公司 | Assembled concrete pavement with convex falcon and construction method |
| CN114809522A (en) * | 2022-06-24 | 2022-07-29 | 北京联合荣大工程材料股份有限公司 | Construction method of cast-iron site terrace |
-
2019
- 2019-03-29 CN CN201920428691.3U patent/CN211079803U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113186769A (en) * | 2021-04-22 | 2021-07-30 | 中冶南方城市建设工程技术有限公司 | Assembled concrete pavement with convex falcon and construction method |
| CN114809522A (en) * | 2022-06-24 | 2022-07-29 | 北京联合荣大工程材料股份有限公司 | Construction method of cast-iron site terrace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20200724 |