Plate-girder connecting joint
By using additional overlapping steel bars and secondary casting areas in the connecting points of the plate beam, the problems of complex and low efficiency of the connection process in the prior art are solved, and a more efficient connection process and lower production costs are achieved.
Patent Information
- Application Number
- CN202421973713.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-15
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-08-15
AI Technical Summary
In the prior art, the connection process between prefabricated plates and prefabricated beams is complicated, and it is necessary to set up a formwork support structure and steel bars on site, resulting in low working efficiency and high production costs.
By connecting with additional overlapping steel bars in the secondary pouring area, the contact area of the connection points is significantly increased, and the secondary pouring area formed is convenient for direct pouring of concrete without additional formwork.
The process is simplified, the work efficiency is improved, the production cost is reduced, and the strength and stability of the plate and beam connection are significantly improved.
Smart Images
Figure CN222976125U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of prefabricated buildings, in particular to a slab-beam connection node. Background Technique
[0002] Prefabricated buildings refer to the prefabrication of building-related components and materials in factories first, and then transporting them to the site for assembly, and connecting them into a building through post-cast concrete or other connection methods. In prefabricated buildings, in order to achieve the coordinated cooperation of the entire building structure and improve the stability and load-bearing capacity of the overall structure. The beam, as the main load-bearing structure, plays the role of transferring loads, while the slab is responsible for covering and supporting the floor or roof of the building. The design and construction quality of the connection structure are directly related to the safety and stability of the entire building structure.
[0003] In the existing technology, for the connection process of precast slabs and precast beams, it is generally required to first set up formwork support structures on site, and then carry out steel bar layout and pouring operations. The entire connection process is relatively complex. Even when using composite slabs and precast beams for connection, formwork support and steel bar binding work are also required under the composite slab, which may not only make it difficult to improve work efficiency, but also increase production costs.
[0004] Therefore, the utility model provides a slab-beam connection node to solve the problems raised in the above background technique. Content of the Utility Model
[0005] The purpose of the utility model is to solve the deficiencies existing in the prior art, and a slab-beam connection node is proposed. By connecting with additional lapped steel bars in the secondary pouring area, the contact area of the connection point is significantly increased, which can be equivalent to cast-in-place. Moreover, the secondary pouring area formed after the combination of the precast slab and the precast beam facilitates the direct pouring of concrete in the groove without the need to additionally build formwork, which not only simplifies the process but also improves work efficiency.
[0006] To achieve the above purpose, the utility model provides the following technical solutions:
[0007] A slab-beam connection node includes a precast slab body, an intermediate span beam, and a side span beam. The precast slab body includes a precast frame, a first top reinforcement is arranged inside the precast frame near the upper part, and a first bottom reinforcement is arranged inside the precast frame near the lower part;
[0008] There are two precast slab bodies, and a secondary pouring area is arranged between each of the two precast slab bodies and both sides of the intermediate span beam. A second top reinforcement is arranged inside the secondary pouring area, and additional lapped steel bars are arranged near the upper end of the second top reinforcement inside the secondary pouring area;
[0009] Through the above technical solution, after the precast slab body in the slab-beam connection point is combined with the first top reinforcement and the first bottom reinforcement arranged inside, the compressive effect of the precast slab body is greatly improved. And after connecting the first top reinforcement with the second top reinforcement inside the secondary casting area, the connection stability between the slab and the beam is improved. At the same time, through the connection of additional lapped reinforcement, the connection strength is further improved.
[0010] Further, the intermediate span beam includes a cast-in-place beam, a fully precast beam, a semi-precast beam, a steel beam, and a shear wall;
[0011] Through the above technical solution, the precast slab body of the present invention can be connected to a variety of intermediate span beams, including cast-in-place beams, fully precast beams, semi-precast beams, steel beams, and shear walls, improving the application adaptability of the precast slab.
[0012] Further, the intermediate span beam is connected to the additional lapped reinforcement by means of tying and lapping, and the steel beam in the intermediate span beam is connected to the additional lapped reinforcement by stud welding;
[0013] Through the above technical solution, after connecting the intermediate cast-in-place beam with the additional lapped reinforcement, a better connection effect can be formed in the secondary casting area.
[0014] Further, the thickness of the precast slab body is greater than or equal to 100 mm, the height of the secondary casting area is greater than or equal to 60 mm, the length of the additional lapped reinforcement is twice the length of the longitudinal tension reinforcement plus 40 mm, and the two ends of the additional lapped reinforcement are respectively greater than or equal to 10 mm away from the two precast slab bodies; the thickness of the precast slab body is not fixed and is greater than or equal to 10 mm;
[0015] Through the above technical solution, the additional lapped reinforcement can greatly improve the connection strength between the precast slab and the precast beam, and the connection strength can be further improved by pouring concrete inside the secondary casting area.
[0016] The present utility model has the following beneficial effects:
[0017] A slab-beam connection node proposed by the present utility model, the connection structure between the precast slab and the precast beam of the present invention can be used to construct an assembled building. During the connection process, the additional lapped reinforcement is used for connection, significantly increasing the contact area of the connection point, greatly improving the connection effect, and after the connection, through the secondary casting area formed between the precast slab and the precast beam, concrete can be directly poured inside without additional formwork erection, thus not only simplifying the process, improving the work efficiency, but also reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic structural diagram after the precast slab body of the present utility model is connected to the intermediate span beam;
[0019] Figure 2 This is a schematic structural diagram after the connection between the precast slab body of the present utility model and the side-span beam.
[0020] Legend:
[0021] 1. Precast slab body; 2. Second top reinforcement; 3. Additional lapped reinforcement; 4. Secondary casting area; 5. Middle-span beam; 6. Side-span beam; 101. Precast frame; 102. First top reinforcement; 103. First bottom reinforcement. Specific embodiments
[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.
[0023] Embodiment 1
[0024] Referring to Figure 1 , an embodiment provided by the present utility model: a slab-beam connection node, including a precast slab body 1, a middle-span beam (wall) 5, and a side-span beam (wall) 6. The precast slab body 1 includes a precast frame 101. A first top reinforcement 102 is arranged near the upper part inside the precast frame 101, and a first bottom reinforcement 103 is arranged near the lower part inside the precast frame 101;
[0025] Specifically, in the above specific embodiment, the precast slab body 1 is tightly combined through the first top reinforcement 102 and the first bottom reinforcement 103 arranged inside the slab-beam connection point, thereby significantly improving the connection effect of the precast slab body 1. At the same time, the first top reinforcement 102 is connected to the second top reinforcement 2 in the secondary casting area 4, further enhancing the connection effect of the slab-beam.
[0026] Two precast slab bodies 1 are provided. Secondary casting areas 4 are arranged between the two precast slab bodies 1 and the two sides of the middle-span beam (wall) 5 respectively. A second top reinforcement 2 is arranged inside the secondary casting area 4, and an additional lapped reinforcement 3 is arranged near the upper end position of the second top reinforcement 2 inside the secondary casting area 4;
[0027] Specifically, in the above specific embodiment, the connection effect is further improved through the connection of the additional lapped reinforcement 3 with the two precast slabs on both sides.
[0028] The middle-span beam (wall) 5 includes a cast-in-place beam, a fully precast beam, a semi-precast beam, a steel beam, and a shear wall;
[0029] Specifically, in the above specific embodiments, the precast slab body 1 can be connected to a variety of intermediate span beams (walls) 5, including cast-in-place beams, fully precast beams, semi-precast beams, steel beams, and shear walls, thereby improving the application adaptability of the precast slab.
[0030] The intermediate span beam (wall) 5 is connected to the additional lapped reinforcement 3 by lapping binding. The steel beam in the intermediate span beam (wall) 5 is connected to the additional lapped reinforcement 3 by stud welding. The thickness of the precast slab body 1 is greater than or equal to 100 mm. The height of the secondary casting area 4 is greater than or equal to 60 mm. The length of the additional lapped reinforcement 3 is twice the length of the longitudinal tension reinforcement plus 40 mm. The two ends of the additional lapped reinforcement 3 are respectively greater than or equal to 10 mm away from the two precast slab bodies 1.
[0031] Specifically, in the above specific embodiments, after connecting the intermediate cast-in-place beam to the additional lapped reinforcement 3, a better connection effect can be formed in the secondary casting area 4. At the same time, the process of fixing the formwork is omitted, improving the work efficiency. Finally, the additional lapped reinforcement 3 can greatly improve the connection stability between the precast slab and the precast beam, and the connection strength can be further improved by pouring concrete inside the secondary casting area 4.
[0032] Embodiment 2
[0033] Referring to Figure 2 , an embodiment provided by the present utility model: includes a precast slab body 1 and a side span beam (wall) 6. The precast slab body 1 includes a precast frame 101. A first top reinforcement 102 is arranged inside the precast frame 101 near the upper part. A first bottom reinforcement 103 is arranged inside the precast frame 101 near the lower part. And there is only one precast slab body 1. The precast slab body 1 is riveted to the top reinforcement of the side span beam (wall) 6, and there is a secondary casting area 4 between them. A second top reinforcement 2 is arranged inside the secondary casting area 4. An additional lapped reinforcement 3 is arranged at a position near the upper end of the second top reinforcement 2 inside the secondary casting area 4.
[0034] Specifically, in the above specific embodiments, when connecting between a single precast slab body 1 and the side span beam (wall) 6, the connection effect between the precast slab body 1 and the side span beam (wall) 6 can still be improved through the additional lapped reinforcement 3 and the secondary casting area 4. And the process of fixing the formwork is saved, improving the work efficiency. At the same time, the versatility of this connection node is improved.
[0035] Working principle: First, set stone pads above the predetermined foundation to ensure the foundation is flat and stable. Subsequently, set up a scaffolding above the stone pads and ensure its stability. On this basis, lay the intermediate span beams (walls) 5 corresponding to the requirements respectively. Then, hoist the first precast slab body 1 and place it steadily on the precast beam with a lifting tool. Repeat the above steps to hoist the second precast slab body 1 and ensure the distance and position between the two slab bodies are accurate. Next, level the two precast slab bodies 1, and use a level or other tools to ensure the flatness. Then carry out the welding work, bind the internal surface reinforcement of adjacent precast slab bodies 1 together, and at the same time bind the additional lap reinforcement 3 to the internal first surface reinforcement 102 of the adjacent precast slab body 1. After the binding is completed, check the binding quality to ensure the connection is firm and stable. At this time, carry out the secondary pouring of concrete into the secondary pouring area 4 to fill the reserved gap. After the concrete solidifies, check the connection work and ensure that the structure is firm and meets the design requirements.
[0036] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.
Claims
1. A plate-beam connection node, comprising a prefabricated plate body (1), an intermediate span beam (5) and a side span beam (6), characterized in that: The prefabricated panel body (1) comprises a prefabricated frame (101), a first surface rib (102) is arranged at the upper part of the prefabricated frame (101), and a first bottom rib (103) is arranged at the lower part of the prefabricated frame (101); Two precast panel bodies (1) are provided, and secondary casting areas (4) are provided between the two precast panel bodies (1) and the two sides of the middle span beam (5), respectively. Second reinforcement bars (2) are provided inside the secondary casting areas (4), and additional lap reinforcement bars (3) are provided inside the secondary casting areas (4) near the upper end of the second reinforcement bars (2).
2. A plate-beam connection node according to claim 1, characterized in that: The middle span beam (5) includes a cast-in-place beam, a fully precast beam, a semi-precast beam, a steel beam and a shear wall.
3. A plate-beam connection node according to claim 1, characterized in that: The middle span beam (5) is connected to the additional lap steel bars (3) by means of binding lap joints, and the steel beams in the middle span beam (5) are connected to the additional lap steel bars (3) by means of bolts.
4. A plate-beam connection node according to claim 1, characterized in that: The thickness of the precast panel body (1) is greater than or equal to 100 mm, the height of the secondary casting area (4) is greater than or equal to 60 mm, the length of the additional lap steel bars (3) is twice the length of the longitudinal tensile steel bars plus 40 mm, and the distance between the two ends of the additional lap steel bars (3) is greater than or equal to 10 mm.