Device for connecting new and old concrete joint surfaces of hydraulic structure

Abstract

The utility model relates to the technical field of the water conservancy industry, in particular to a hydraulic structure new and old concrete joint surface connecting device which comprises an old concrete end, an original steel bar and a newly-poured concrete layer, and the original steel bar connected with a welded T-shaped steel plate is arranged at the end, close to concrete scabbling, of the old concrete end. The ends, away from the welded T-shaped steel plates, of the original steel bars are inserted into the old concrete ends, embedded steel bars are embedded into the ends, close to the concrete scabbled parts, of the old concrete ends, second-stage concrete is arranged at the positions, close to the concrete scabbled parts, of the old concrete ends, and a newly-poured concrete layer is poured to the ends, close to the second-stage concrete, of the old concrete ends. And an expansion joint is arranged between the newly-poured concrete layer and the end part of the old concrete. Compared with a traditional mode that a water stop and a T-shaped steel plate are buried in a cutting seam, damage to an original structure is smaller, meanwhile, the contact effect is better, an existing structure of a building can be fully utilized, new and old structures can be connected more harmoniously, and the anti-seepage structure has the advantages of being small in construction difficulty, short in construction time and good in anti-seepage effect.

Description

Technical Field

[0001] The utility model relates to the technical field of water conservancy industry, in particular to a device for connecting new and old concrete joint surfaces of hydraulic structures. Background Art

[0002] Hydraulic structures are various structures that work under the static or dynamic force of water and interact with water. They are structures that control and regulate water flow, prevent and control water disasters, and develop and utilize water resources. They are an important part of achieving the goals of various water conservancy projects. Building design includes: site selection, such as the selection of dam sites, gate sites, tunnel lines, and channel lines; type selection, that is, selecting the structural form of the building, such as dam type selection; hydraulic calculation; structural calculation; detailed engineering design, determining the foundation treatment plan, observation design, and reasonable layout of various buildings. For large, medium and important projects, hydraulic model tests and structural model tests should also be carried out to verify.

[0003] After long-term use, hydraulic structures need to be expanded, renovated, hazard-free and reinforced. Traditional technologies usually use cutting seams to bury waterstops or T-shaped steel plates, but the above methods will cause damage to the original structure and the connection between the new and old structures is not coordinated.

[0004] Therefore, we propose a device for connecting the new and old concrete interfaces of hydraulic structures. Utility Model Content

[0005] The main purpose of the utility model is to provide a device for connecting the new and old concrete joints of hydraulic structures. Compared with the traditional method of cutting seams to bury waterstops, the method of burying T-shaped steel plates causes less damage to the original structure and has a better contact effect. It can fully utilize the existing structure of the building and make the connection between the new and old structures more coordinated. It has the advantages of low construction difficulty, short construction time and good anti-seepage effect, and can effectively solve the problems in the background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A device for connecting the new and old concrete interface of a hydraulic structure comprises an old concrete end, original steel bars and a newly cast concrete layer, wherein one end of the old concrete end is provided with a concrete roughening, an end of the old concrete end close to the concrete roughening is provided with an original steel bar connected to a welded T-shaped steel plate, an end of the original steel bar away from the welded T-shaped steel plate is inserted into the old concrete end, an end of the old concrete end close to the concrete roughening is implanted with an embedded steel bar, a second-phase concrete is provided at the position of the concrete roughening at the old concrete end, a newly cast concrete layer is cast at one end of the old concrete end close to the second-phase concrete, an end of the embedded steel bar away from the old concrete end is located in the newly cast concrete layer, the welded T-shaped steel plate is located in the newly cast concrete layer, and an expansion joint is provided between the newly cast concrete layer and the old concrete end.

[0008] By adopting the above technical solution and the method of embedding reinforcement, which has little impact on the original structure, the purpose of reinforcing the original structure under small disturbances is achieved. Combined with the design of welded T-shaped steel plates, the anti-seepage performance of the contact joint can be enhanced to meet the strength and anti-seepage requirements of the contact joint between the new and old concrete structures.

[0009] Specifically, one end of the welded T-shaped steel plate is fixedly welded to one end of the original steel bar.

[0010] Specifically, a closed-cell foam board, a waterproof rubber and a copper sheet waterproof are also provided in the newly poured concrete layer, and the closed-cell foam board, the waterproof rubber and the copper sheet waterproof are arranged in a right-angle structure.

[0011] Specifically, the top and bottom ends of the closed-cell foam board are fixedly connected with expansion water stop strips.

[0012] Specifically, one end of the embedded reinforcement is fixedly connected with an implantation head located at the end of the old concrete. The implantation head is fixedly welded to one end of the embedded reinforcement, and an arc groove is arranged on the outer side of the implantation head.

[0013] Specifically, an insert is fixedly welded at the center of one end of the implant head near the rebar, a socket matched with the insert is provided at the center of one end of the implant head near the rebar, and a welding groove is provided at the outer edge of one end of the implant head near the rebar.

[0014] Beneficial effects of the utility model:

[0015] The new and old concrete joint surface connection device of the hydraulic structure described in the utility model adopts the method of planting reinforcement, which has little effect on the original structure and achieves the purpose of reinforcing the original structure under small disturbance. With the design of the welded T-shaped steel plate, the anti-seepage performance of the contact joint can be enhanced to meet the requirements of the strength and anti-seepage of the contact joint of the new and old concrete structures.

[0016] Compared with the traditional method of cutting seams to bury waterstops, the method of burying T-shaped steel plates causes less damage to the original structure and has better contact effects. It can not only make full use of the existing structure of the building, but also make the connection between the new and old structures more coordinated. It has the advantages of low construction difficulty, short construction time and good anti-seepage effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a three-dimensional diagram of the implant head of the utility model;

[0020] In the figure: 1. Concrete roughening; 2. Rebar embedding; 3. Welded T-shaped steel plate; 4. Second-phase concrete; 5. Expansion joint; 6. Newly poured concrete layer; 7. Closed-cell foam board; 8. Expansion waterstop; 9. Waterstop rubber; 10. Copper sheet waterstop; 11. Old concrete end; 12. Original steel bar; 13. Implant head; 14. Arc groove; 15. Plug-in; 16. Socket; 17. Welding groove. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] As an embodiment of the present utility model, Figure 1-Figure 2 As shown, a device for connecting the new and old concrete interface of a hydraulic structure described in the utility model comprises an old concrete end 11, an original steel bar 12 and a newly cast concrete layer 6, one end of the old concrete end 11 is provided with a concrete chiseling 1, the end of the old concrete end 11 close to the concrete chiseling 1 is provided with an original steel bar 12 connected to a welded T-shaped steel plate 3, the end of the original steel bar 12 away from the welded T-shaped steel plate 3 is inserted into the old concrete end 11, the end of the old concrete end 11 close to the concrete chiseling 1 is implanted with a rebar 2, the old concrete end 11 is provided with a second-phase concrete 4 at the position of the concrete chiseling 1, the old concrete end 11 is cast with a newly cast concrete layer 6 at the end close to the second-phase concrete 4, the end of the old concrete end 11 close to the second-phase concrete 4 is cast with a newly cast concrete layer 6, the end of the rebar 2 away from the old concrete end 11 is located in the newly cast concrete layer 6, the welded T-shaped steel plate 3 is located in the newly cast concrete layer 6, and an expansion joint 5 is provided between the newly cast concrete layer 6 and the old concrete end 11.

[0023] When in use, 15 cm is chiseled off at one end of the old concrete end 11 to form a concrete roughening 1, and the original steel bar 12 is exposed, and the steel bar 2 is embedded on the surface of the concrete roughening 1 close to the original steel bar 12, and one end of the welded T-shaped steel plate 3 is fixedly welded to one end of the original steel bar 12, and the second-phase concrete 4 is provided at the position of the concrete roughening 1 at the old concrete end 11, and a new concrete layer 6 is poured on the end of the old concrete end 11 close to the second-phase concrete 4.

[0024] The utility model also includes that one end of the welded T-shaped steel plate 3 is fixedly welded to one end of the original steel bar 12 .

[0025] The utility model also includes that a closed-cell foam board 7, a waterproof rubber 9 and a copper sheet waterproof 10 are also provided in the newly poured concrete layer 6, and the closed-cell foam board 7 and the waterproof rubber 9 and the copper sheet waterproof 10 are arranged in a right-angle structure.

[0026] The utility model also includes that the top and bottom ends of the closed-cell foam board 7 are fixedly connected with expansion water stop strips 8 .

[0027] The utility model also includes that one end of the embedded reinforcement 2 located at the old concrete end 11 is fixedly connected with an implant head 13, the implant head 13 is fixedly welded to one end of the embedded reinforcement 2, and an arc groove 14 is provided on the outer side of the implant head 13.

[0028] The utility model also includes that a plug-in 15 is fixedly welded at the center of one end of the implant head 13 near the implant bar 2, a socket 16 adapted to the plug-in 15 is provided at the center of one end of the implant head 13 near the implant head 13, and a welding groove 17 is provided at the outer edge of one end of the implant head 13 near the implant bar 2.

[0029] When the utility model is in use, 15 cm is chiseled off at one end of the old concrete end 11 to form a concrete roughening 1, and the original steel bar 12 is exposed, and the steel bar 2 is embedded on the surface of the concrete roughening 1 close to the original steel bar 12, and one end of the welded T-shaped steel plate 3 is fixedly welded to one end of the original steel bar 12, the old concrete end 11 is located at the position of the concrete roughening 1 and is provided with a second-phase concrete 4, and a new concrete layer 6 is poured on one end of the old concrete end 11 close to the second-phase concrete 4, the embedded steel bar 2 is located away from the old concrete end 11 at the end of the new concrete layer 6, the welded T-shaped steel plate 3 is located in the new concrete layer 6, and an expansion joint 5 is provided between the new concrete layer 6 and the old concrete end 11. A closed-cell foam board 7, a water-stop rubber 9 and a copper sheet water-stop 10 are also provided in the new concrete layer 6, and the closed-cell foam board 7 and the water-stop rubber 9 and the copper sheet water-stop 10 are arranged in a right-angle structure.

[0030] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents.

Claims

1. A device for connecting the new and old concrete surfaces of hydraulic structures, characterized in that: The invention comprises an old concrete end (11), an original steel bar (12) and a newly poured concrete layer (6), wherein one end of the old concrete end (11) is provided with a concrete chiseling (1), and the end of the old concrete end (11) close to the concrete chiseling (1) is provided with an original steel bar (12) connected to a welded T-shaped steel plate (3), and the end of the original steel bar (12) away from the welded T-shaped steel plate (3) is inserted into the old concrete end (11), and the end of the old concrete end (11) close to the concrete chiseling (1) is implanted with a An embedded reinforcement (2), the end portion (11) of the old concrete is located at the position of the concrete roughening (1) and a second-phase concrete (4) is provided, a newly poured concrete layer (6) is cast at one end of the old concrete end portion (11) close to the second-phase concrete (4), the end of the embedded reinforcement (2) away from the old concrete end portion (11) is located in the newly poured concrete layer (6), the welded T-shaped steel plate (3) is located in the newly poured concrete layer (6), and an expansion joint (5) is provided between the newly poured concrete layer (6) and the old concrete end portion (11).

2. A device for connecting the new and old concrete surfaces of hydraulic structures according to claim 1, characterized in that: One end of the welded T-shaped steel plate (3) is fixedly welded to one end of the original steel bar (12).

3. A device for connecting the new and old concrete joint surfaces of a hydraulic structure according to claim 1, characterized in that: A closed-cell foam board (7), a waterproof rubber (9) and a copper sheet waterproof (10) are also provided in the newly poured concrete layer (6); the closed-cell foam board (7) and the waterproof rubber (9) and the copper sheet waterproof (10) are arranged at right angles.

4. A device for connecting the new and old concrete joint surfaces of a hydraulic structure according to claim 3, characterized in that: The top and bottom ends of the closed-cell foam board (7) are both fixedly connected with expansion water stop strips (8).

5. The device for connecting the new and old concrete joint surfaces of hydraulic structures according to claim 1 is characterized in that: The embedded reinforcement (2) is located at one end of the old concrete end (11) and is fixedly connected to an implant head (13). The implant head (13) is fixedly welded to one end of the embedded reinforcement (2). An arc groove (14) is provided on the outside of the implant head (13).

6. A device for connecting the new and old concrete joint surfaces of a hydraulic structure according to claim 5, characterized in that: An insert (15) is fixedly welded at the center of one end of the implant head (13) close to the implant bar (2); a socket (16) adapted to the insert (15) is provided at the center of one end of the implant bar (2) close to the implant head (13); and a welding groove (17) is provided at the outer edge of one end of the implant bar (2) close to the implant head (13).

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