Reinforced concrete prefabricated component splicing structure
By setting limiting components and grouting holes on precast reinforced concrete components, combined with the use of bolts and hexagonal nuts, a flexible choice of quick or firm connection is achieved, solving the problem of insufficient applicability of existing splicing structures and improving the stability and convenience of the connection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JILIN QINGYUAN CONSTR IND CO LTD
- Filing Date
- 2025-05-26
- Publication Date
- 2026-07-10
AI Technical Summary
The existing precast reinforced concrete component splicing structure has low applicability and cannot adopt different connection methods according to actual needs.
A precast reinforced concrete component splicing structure is provided, which fixes the lower splice and the upper splice to the lower precast component and the upper precast component, and sets through holes, injection holes and limiting components on the iron sleeve. The connection can be quickly achieved by bolts and hexagonal nuts, or the connection can be strengthened by pouring concrete, which has two different fixing methods.
It enables the flexibility to choose between quick or robust connections as needed, improves the applicability and efficiency of splicing structures, and enhances the stability and convenience of connections.
Smart Images
Figure CN224478545U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of concrete technology, and in particular to the splicing structure of precast reinforced concrete components. Background Technology
[0002] With the development of my country's construction industry, in addition to traditional construction techniques, prefabricated construction is gradually penetrating the construction field. Prefabricated construction has advantages such as saving formwork, improving construction conditions during fabrication, increasing labor productivity, and accelerating construction progress, and is being used more and more widely in the construction industry.
[0003] Currently, most existing precast reinforced concrete component splicing structures include the following technologies;
[0004] Rebar connection technologies: Sleeve grouting connection involves pre-installing a sleeve and injecting high-strength grout to tightly connect the rebar and the sleeve, which is often used for vertical components; Mechanical connection uses straight thread, tapered thread sleeves, etc. to quickly and reliably connect rebars, which is suitable for horizontal components; Welded connection uses high temperature to fuse the ends of the rebar, but it is easily affected by the environment and its application scenarios are limited.
[0005] Concrete bonding surface treatment technology: Rough surface treatment uses roughening and chiseling methods to increase the roughness of the bonding surface of precast components and improve the bonding force; the application of interface agent can fill the pores and strengthen the shear and tensile properties of the bonding surface.
[0006] Post-cast concrete technology: Post-cast concrete joints are set up at the splicing points of precast components, and high-grade concrete is poured after anchoring steel bars to ensure the integrity of the structure; post-cast strip construction is for long components, and is poured after settlement and shrinkage to reduce cracks.
[0007] Sealing and waterproofing technology: Material sealing uses sealant and waterstop to fill gaps and isolate moisture; structural waterproofing uses special designs such as tongue and groove joints and drip grooves to guide water flow and enhance the waterproofing effect.
[0008] Currently, existing precast reinforced concrete component splicing structures have been found to have at least the following technical problems in actual use;
[0009] Existing precast reinforced concrete component splicing structures either use concrete pouring or bolt and nut connections, which mostly cannot be adapted to different connection methods according to actual needs, resulting in low applicability. Utility Model Content
[0010] To address the shortcomings of existing technologies, this utility model provides a splicing structure for precast reinforced concrete components, solving the problem of low applicability of existing splicing structures for precast reinforced concrete components.
[0011] To achieve the above objectives, this utility model provides the following technical solution:
[0012] The precast reinforced concrete component splicing structure includes a lower precast component and an upper precast component. The lower precast component and the upper precast component are respectively fixedly connected by a lower splice and an upper splice. The top surface of the lower precast component is fixedly connected to a sheet metal sleeve for pouring concrete. Both ends of the sheet metal sleeve are provided with through holes, and both sides of the sheet metal sleeve are provided with grouting holes. A limit component is provided between the sheet metal sleeve, the lower splice, and the upper splice. The limit component includes bolts and hexagonal nuts.
[0013] Preferably, three reinforcing ribs are fixedly connected to the ends of the lower splice and the upper splice that are far apart from each other. The six reinforcing ribs are fixedly connected to the lower precast and the upper precast respectively. The setting of the reinforcing ribs makes the connection between the lower splice or the upper splice and the lower precast and the upper precast more precise.
[0014] Preferably, the lower splice has a mating groove at the end away from the lower preform, and a through second hole is formed on the surface of the lower splice.
[0015] Preferably, an insertion block is fixedly connected to the end of the upper splice component away from the upper precast component, and a third through hole is opened on the surface of the insertion block.
[0016] Preferably, three flow holes are provided on both sides of the end of the lower splice that contacts the upper splice, and the twelve flow holes are aligned in pairs for concrete to pass through.
[0017] Preferably, the plug-in block is plugged into the mating groove, the second through hole and the third through hole are aligned with each other, and the second through hole is aligned with the through holes at both ends of the iron sleeve.
[0018] Preferably, the bolt is fitted inside the second and third through holes, and the bolt passes through one end of the lower splice and the plug block and is threadedly connected to the hexagonal nut.
[0019] Preferably, the lower splice is fixedly connected to the sheet metal sleeve, and the upper splice is fitted inside the sheet metal sleeve.
[0020] Compared with the prior art, the present invention has the following beneficial effects:
[0021] 1. When this application does not require a very firm connection or requires a quick connection, the plug-in block can be plugged into the mating groove, aligning the second through hole with the third through hole. The bolt is then passed through the through hole of the iron sleeve and fitted with the second and third through holes. Subsequently, the hexagonal nut is threaded onto the bolt to complete the installation. Only one hexagonal nut needs to be tightened by the worker, which is convenient and quick. When this application requires a more firm connection, the plug-in block can be mated with the mating groove, and concrete can be poured directly into the iron sleeve through the grouting hole. After the concrete enters the inside of the iron sleeve, it will flow through various flow holes into the gap between the lower splice, the upper splice, and the iron sleeve. After the concrete solidifies, the lower precast component and the upper precast component are tightly connected. This application has two different fixing methods, which solves the problem of low applicability of existing reinforced concrete precast component splicing structures.
[0022] 2. When this application does not require a very firm connection or requires a quick connection, the plug-in block can be plugged into the mating groove to align the second through hole with the third through hole. The bolt is then passed through the through hole of the iron sleeve and fitted with the second and third through holes. Finally, the hexagonal nut is threaded onto the bolt to complete the installation. Only one hexagonal nut needs to be tightened by the worker, which is convenient and quick, giving this application the effect of easy splicing. Attached Figure Description
[0023] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.
[0024] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0025] Figure 2 This is a half-sectional view of the detached iron sheath of this utility model.
[0026] Figure 3 This is a structural diagram of the lower splicing component and the upper splicing component of this utility model in their splicing state;
[0027] Figure 4 This is a structural diagram of the lower splicing component and the upper splicing component of this utility model in their separated state.
[0028] Legend: 1. Lower precast component; 2. Upper precast component; 3. Lower splice; 4. Upper splice; 5. Bolt; 6. Sheet metal sleeve; 7. Reinforcing rib; 8. Flow hole; 301. Butt groove; 302. Second through hole; 401. Insert block; 402. Third through hole; 501. Hexagonal nut; 601. Injection hole. Detailed Implementation
[0029] This application provides a precast reinforced concrete component splicing structure, which effectively solves the problem of low applicability of existing precast reinforced concrete component splicing structures.
[0030] Example: Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the technical solution in this application embodiment effectively solves the technical problem of low applicability of existing precast reinforced concrete component splicing structures. The overall idea is as follows:
[0031] To address the problems existing in the prior art, this utility model provides a precast reinforced concrete component splicing structure, including a lower precast component 1 and an upper precast component 2. The lower precast component 1 and the upper precast component 2 are respectively fixedly connected to a lower splicing component 3 and an upper splicing component 4. The top surface of the lower precast component 1 is fixedly connected to a sheet metal sleeve 6 for pouring concrete. Both ends of the sheet metal sleeve 6 are provided with through holes, and both sides of the sheet metal sleeve 6 are provided with grouting holes 601. A limiting component is provided between the sheet metal sleeve 6, the lower splicing component 3 and the upper splicing component 4. The limiting component includes a bolt 5 and a hexagonal nut 501.
[0032] Three reinforcing ribs 7 are fixedly connected to the ends of the lower splice 3 and the upper splice 4 that are far apart from each other. The six reinforcing ribs 7 are fixedly connected to the lower precast part 1 and the upper precast part 2 respectively. The setting of the reinforcing ribs 7 makes the connection between the lower splice 3 or the upper splice 4 and the lower precast part 1 and the upper precast part 2 more precise.
[0033] The lower splice 3 has a docking groove 301 at the end away from the lower precast part 1, and a through second through hole 302 is provided on the surface of the lower splice 3.
[0034] An insert block 401 is fixedly connected to one end of the upper splice 4 away from the upper precast part 2. The surface of the insert block 401 has a through third through hole 402.
[0035] Three flow holes 8 are provided on both sides of the end of the lower splice 3 that contacts the upper splice 4. The twelve flow holes 8 are aligned in pairs and are used for concrete to pass through.
[0036] The plug block 401 is plugged into the mating groove 301, the second through hole 302 and the third through hole 402 are aligned with each other, and the second through hole 302 is aligned with the through holes at both ends of the iron sleeve 6.
[0037] Bolt 5 is fitted inside the second through hole 302 and the third through hole 402. Bolt 5 passes through one end of the lower splice 3 and the plug block 401 and is threadedly connected to the hexagonal nut 501.
[0038] The lower splice 3 is fixedly connected to the sheet metal sleeve 6, and the upper splice 4 is sleeved on the inside of the sheet metal sleeve 6.
[0039] Lower prefabricated component 1: As the lower component of the splicing structure, it is the basic component of the entire structure. The top surface is fixedly connected to the lower splicing component 3 and the sheet metal sleeve 6, providing an installation foundation for other components.
[0040] Upper precast component 2: The upper component of the splicing structure, which, together with the lower precast component 1, forms a complete structure and is fixedly connected to the upper splicing component 4 to achieve splicing with the lower precast component 1.
[0041] Lower splice 3: Fixed to the lower precast part 1, with a butt groove 301 and a second through hole 302 at the end away from the lower precast part 1, for docking with the plug block 401 of the upper splice 4 and for connection with bolts 5; the flow hole 8 on the surface allows concrete to pass through, strengthening the connection with the upper splice 4; the side reinforcing rib 7 enhances the connection strength with the lower precast part 1.
[0042] Upper splice 4: fixed on the upper precast part 2, the end plug block 401 can be inserted into the docking groove 301 of the lower splice 3, and the surface is provided with a third through hole 402 aligned with the second through hole 302 for the bolt 5 to pass through; the flow hole 8 cooperates with the lower splice 3 to realize the flow of concrete; the reinforcing rib 7 enhances the tightness of its connection with the upper precast part 2.
[0043] Bolt 5: It is fitted inside the second through hole 302 and the third through hole 402, passes through the lower splice 3 and the plug block 401, and is threaded to the hexagonal nut 501. It serves to fix the upper and lower splice pieces during quick connection.
[0044] Metal sleeve 6: Fixed to the top surface of the lower precast component 1 for pouring concrete. The through holes at both ends facilitate the passage of bolts 5, and the injection holes 601 on both sides allow concrete to be poured in. The concrete fills the gap between the lower splice 3 and the upper splice 4 through the flow holes 8, enhancing the connection firmness.
[0045] Reinforcing rib 7: Three of each of the lower splice 3 and upper splice 4 are fixed and connected to the lower precast part 1 and the upper precast part 2 respectively, which improves the precision of the connection between the splice and the precast part and the structural stability.
[0046] Flow holes 8: Three on each side of the lower splice 3 and the upper splice 4, aligned in pairs, provide a flow channel for concrete, allowing the concrete to fill the gaps between the splices and enhance the connection strength between the two precast components.
[0047] Docking groove 301: It is opened at the end of the lower splice 3 away from the lower prefabricated part 1, and is used to engage with the plug block 401 of the upper splice 4 to achieve the initial positioning of the upper and lower splice 3.
[0048] The second through hole 302 is formed on the surface of the lower splice 3 and extends through it. After being aligned with the third through hole 402 of the upper splice 4, it allows the bolt 5 to pass through, thereby realizing the bolt connection of the splice.
[0049] Insertion block 401: Fixed at the end of the upper splice 4 away from the upper prefabricated part 2, it can be inserted into the docking groove 301 of the lower splice 3 to achieve the initial docking of the upper and lower splices.
[0050] The third through hole 402 is formed on the surface of the plug block 401 and extends through it, and is aligned with the second through hole 302. It is used for the bolt 5 to pass through to fix the upper and lower splicing parts.
[0051] Hex nut 501: Connects to bolt 5 via thread. After tightening, it securely fixes the lower splice 3 and the upper splice 4, completing the quick connection process.
[0052] Grouting hole 601: It is opened on both sides of the iron sleeve 6. When a firm connection is required, concrete is poured into the iron sleeve 6 through this hole to strengthen the connection between the upper and lower precast components.
[0053] Working principle:
[0054] When this application does not require a very strong connection or requires a quick connection, the plug-in block 401 can be plugged into the mating groove 301, aligning the second through hole 302 with the third through hole 402. The bolt 5 is then passed through the through hole of the iron sleeve 6 and fitted with the second through hole 302 and the third through hole 402. Subsequently, the hexagonal nut 501 is threaded onto the bolt 5 to complete the installation. Only one hexagonal nut 501 needs to be tightened by the worker, which is convenient and quick. When this application requires a more robust connection, the plug-in block 401 can be mated with the mating groove 301, and concrete can be poured directly into the iron sleeve 6 through the grouting hole 601. After the concrete enters the inside of the iron sleeve 6, it will flow through the various flow holes 8 into the gap between the lower splice 3 and the upper splice 4. After the concrete solidifies, the lower precast part 1 and the upper precast part 2 will be tightly connected.
[0055] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.
Claims
1. A precast reinforced concrete component splicing structure, comprising a lower precast component (1) and an upper precast component (2), characterized in that, The lower precast component (1) and the upper precast component (2) are respectively fixedly connected by a lower splice (3) and an upper splice (4). The top surface of the lower precast component (1) is fixedly connected to a sheet metal sleeve (6) for pouring concrete. Both ends of the sheet metal sleeve (6) are provided with through holes, and both sides of the sheet metal sleeve (6) are provided with grouting holes (601). A limit component is provided between the sheet metal sleeve (6), the lower splice (3) and the upper splice (4). The limiting components include a bolt (5) and a hexagonal nut (501).
2. The precast reinforced concrete component splicing structure as described in claim 1, characterized in that: The lower splice (3) and the upper splice (4) are each fixedly connected to three reinforcing ribs (7) at their ends that are far apart from each other. The six reinforcing ribs (7) are fixedly connected to the lower precast part (1) and the upper precast part (2) respectively.
3. The precast reinforced concrete component splicing structure as described in claim 2, characterized in that: The lower splice (3) has a docking groove (301) at one end away from the lower preform (1), and a second through hole (302) is formed on the surface of the lower splice (3).
4. The precast reinforced concrete component splicing structure as described in claim 3, characterized in that: The upper splicing component (4) is fixedly connected to a plug-in block (401) at one end away from the upper prefabricated component (2), and the surface of the plug-in block (401) is provided with a through third through hole (402).
5. The precast reinforced concrete component splicing structure as described in claim 4, characterized in that: The lower splice (3) and the upper splice (4) are each provided with three flow holes (8) on both sides of the end that are in contact with each other, and the twelve flow holes (8) are aligned in pairs.
6. The precast reinforced concrete component splicing structure as described in claim 5, characterized in that: The plug-in block (401) is plugged into the mating groove (301), the second through hole (302) and the third through hole (402) are aligned with each other, and the second through hole (302) is aligned with the through holes at both ends of the iron sleeve (6).
7. The precast reinforced concrete component splicing structure as described in claim 6, characterized in that: The bolt (5) is fitted inside the second through hole (302) and the third through hole (402). The bolt (5) passes through one end of the lower splice (3) and the plug block (401) and the hexagonal nut (501).
8. The precast reinforced concrete component splicing structure as described in claim 7, characterized in that: The lower splice (3) is fixedly connected to the iron sheet sleeve (6), and the upper splice (4) is sleeved on the inside of the iron sheet sleeve (6).