Fabricated precast beam

Abstract

The utility model relates to the technical field of precast beams, and discloses an assembly type precast beam which comprises a precast hanger plate, a precast arch ring and a precast beam plate. A prefabricated arch ring is arranged at the bottom of the prefabricated beam plate, a prefabricated hanging plate is arranged at the lowest position of the top of the prefabricated arch ring and the middle of the bottom of the prefabricated beam plate, horizontal prefabricated plates are arranged on the two sides of the prefabricated hanging plate, triangular prefabricated blocks are arranged on the tops of the horizontal prefabricated plates, and strip-shaped sliding holes are formed in one sides of the triangular prefabricated blocks. Prefabricated butt joint blocks are arranged on the inner sides of the top ends of the prefabricated arch rings; according to the assembly type precast beam, the bending strength of the middle of the precast beam is improved, the pressure bearing effect is remarkably improved, and the longitudinal tensile strength, the transverse shear resistance and the overall stability of the precast beam are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of precast beam technology, and in particular to an assembled precast beam. Background Technology

[0002] Precast precast beams are a structural system that utilizes factory production and on-site assembly. Their core advantage lies in achieving efficient construction and high-quality control through standardized processes, offering significant advantages in building and bridge engineering. Precast beams are formed in the factory using molds and undergo prestressing to ensure dimensional accuracy and strength consistency. Concrete pouring, vibration, and curing are completed on the production line, resulting in a surface finish and strength superior to on-site casting.

[0003] Previous prefabricated beams have the following drawbacks: 1. The bending strength in the middle of existing prefabricated beams is low, the compressive strength is not obvious, they cannot provide longitudinal tensile strength or transverse shear strength, and the overall stability is poor. Therefore, those skilled in the art have provided a prefabricated beam to solve the problems mentioned in the background art. Utility Model Content

[0004] The main objective of this invention is to provide a prefabricated assembly beam to solve the problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A prefabricated precast beam includes a precast hanging slab, a precast arch ring, and a precast beam slab;

[0007] The bottom of the precast beam is provided with a precast arch ring. At the lowest point of the top of the precast arch ring and the middle part of the bottom of the precast beam slab, a precast hanging plate is provided. Horizontal precast plates are provided on both sides of the precast hanging plate, and triangular precast blocks are provided on the top of the horizontal precast plates. A strip-shaped sliding hole is opened on one side of the triangular precast block. Precast connecting blocks are provided on the inner side of the top of the precast arch ring. A tie rod is installed on one side of the precast connecting block through a metal connecting plate and connecting bolts. One end of the tie rod passes through the strip-shaped sliding hole, and a locking nut is sleeved on one end of the tie rod, with the locking nut located outside the strip-shaped sliding hole.

[0008] As a further improvement of this utility model: prefabricated edge strips are provided on both sides of the bottom of the prefabricated beam slab, and prefabricated triangular plates integrally formed with the prefabricated beam slab are provided at equal intervals on the inner side of the connection between the prefabricated edge strips and the prefabricated beam slab. The prefabricated edge strips and prefabricated triangular plates are used to increase the local compressive strength of the prefabricated beam and make it less prone to breakage.

[0009] As a further improvement of this utility model: precast pad stones integrally formed with the precast beam slab are provided at both ends of the bottom of the precast beam slab and on the outside of the precast arch ring.

[0010] As a further improvement of this utility model, the bottom of the precast pad stone is provided with a limiting groove to facilitate the limiting of the beam support.

[0011] As a further improvement of this utility model: one end of the tie rod is provided with an external thread that matches the locking nut, and one end of the tie rod is fixed to the outside of the strip-shaped sliding hole of the triangular precast block by the locking nut.

[0012] As a further improvement of this utility model, the precast beams, precast arches, precast hanging slabs, horizontal precast slabs, and triangular precast blocks are all integrally cast.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. The use of precast arch rings and precast hanging plates effectively increases the bending strength in the middle of the precast beam, significantly improving the bearing capacity and making it less prone to deformation. Since one end of the precast connecting block is connected to a tie rod by a metal connecting plate and connecting bolts, and one end of the tie rod is fixed to the outside of the strip-shaped sliding hole of the triangular precast block by a lock nut, the precast arch ring is longitudinally tightened and fixed, forming a certain prestress effect, which makes it longitudinally tensile and transversely shear-resistant, and the overall stability is greatly improved.

[0015] 2. Precast edge strips and precast triangular plates are used to increase the local compressive strength of the precast beam, making it less prone to damage. During the erection of the precast beam, the precast pad stones provide effective support, facilitating the transfer of loads above the precast beam slab. In addition, the limiting grooves engage with the supports of the cap beam, effectively limiting the movement of the beam. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a prefabricated assembled beam according to the present invention.

[0017] Figure 2 This is a side view of an assembled prefabricated beam according to the present invention.

[0018] Figure 3 This utility model relates to an assembled precast beam. Figure 2 Side view at point A.

[0019] Figure 4 This utility model relates to an assembled precast beam. Figure 2 A schematic diagram of the structure at point B.

[0020] In the diagram: 1. Precast hanging slab; 2. Horizontal precast slab; 3. Triangular precast block; 4. Precast arch ring; 5. Limiting groove; 6. Precast pad stone; 7. Precast triangular plate; 8. Precast edge strip; 9. Precast beam slab; 10. Tie rod; 11. Precast butt joint block; 12. Locking nut; 13. Strip-shaped sliding hole; 14. Metal connecting plate; 15. Connecting bolt. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 In this embodiment of the utility model, a prefabricated assembled beam includes a prefabricated hanging plate 1, a prefabricated arch ring 4, and a prefabricated beam plate 9;

[0023] A precast arch 4 is provided at the bottom of the precast beam slab 9. A precast hanging plate 1 is provided at the lowest point of the top of the precast arch 4 and at the middle part of the bottom of the precast beam slab 9. Horizontal precast plates 2 are provided on both sides of the precast hanging plate 1, and a triangular precast block 3 is provided at the top of the horizontal precast plate 2. A strip-shaped sliding hole 13 is opened on one side of the triangular precast block 3. Precast connecting blocks 11 are provided on the inner side of the top of the precast arch 4. A tie rod 10 is installed on one side of the precast connecting block 11 through a metal connecting plate 14 and a connecting bolt 15. One end of the tie rod 10 passes through the strip-shaped sliding hole 13, and a locking nut 12 is sleeved on one end of the tie rod 10, with the locking nut 12 located outside the strip-shaped sliding hole 13.

[0024] Among them, precast edge strips 8 are provided on both sides of the bottom of the precast beam slab 9, and precast triangular plates 7 integrally formed with the precast beam slab 9 are provided at equal intervals on the inner side of the connection between the precast edge strips 8 and the precast beam slab 9; the precast edge strips 8 and precast triangular plates 7 are used to increase the local compressive strength of the precast beam and make it less prone to damage.

[0025] Among them, precast pad stones 6 are integrally formed with the precast beam 9 at both ends of the bottom of the precast beam 9 and on the outside of the precast arch ring 4; the precast pad stones 6 provide effective support and facilitate the transfer of the load above the precast beam 9.

[0026] Among them, the bottom of the precast pad stone 6 is provided with a limiting groove 5 to facilitate the limiting of the beam support; the limiting groove 5 is engaged with the support of the cap beam, effectively achieving the limiting effect.

[0027] One end of the tie rod 10 is provided with an external thread that matches the locking nut 12; one end of the tie rod 10 is fixed to the outside of the strip-shaped sliding hole 13 of the triangular precast block 3 by the locking nut 12.

[0028] Among them, the precast beam slab 9, precast arch ring 4, precast hanging slab 1, horizontal precast slab 2 and triangular precast block 3 are all cast in one piece; they are easy to produce, have good strength and rigidity, are not easy to crack, and are durable.

[0029] The working principle of this utility model is as follows: the precast arch ring 4 and precast hanging plate 1 effectively increase the bending strength of the middle part of the precast beam, significantly improve the bearing capacity, and prevent deformation. Since one end of the precast connecting block 11 is connected to the tie rod 10 through the metal connecting plate 14 and connecting bolt 15, and one end of the tie rod 10 is fixed to the outside of the strip-shaped sliding hole 13 of the triangular precast block 3 through the locking nut 12, the precast arch ring 4 is longitudinally tightened and fixed, forming a certain prestress effect, which makes it longitudinally tensile and transversely shear-resistant, and the overall stability is greatly improved. The precast edge strip 8 and precast triangular plate 7 increase the local compressive strength of the precast beam and prevent damage. During the erection of the precast beam, the precast pad stone 6 provides effective support, which facilitates the transfer of the load above the precast beam slab 9, and the limiting groove 5 engages with the support of the cap beam, effectively limiting the position.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A prefabricated precast beam, comprising a precast hanging slab (1), a precast arch ring (4), and a precast beam slab (9); Its characteristics are: The bottom of the precast beam (9) is provided with a precast arch (4). The lowest point of the top of the precast arch (4) and the middle part of the bottom of the precast beam (9) are provided with a precast hanging plate (1). Horizontal precast plates (2) are provided on both sides of the precast hanging plate (1), and a triangular precast block (3) is provided on the top of the horizontal precast plate (2). A strip-shaped sliding hole (13) is opened on one side of the triangular precast block (3). A precast connecting block (11) is provided on the inner side of the top of the precast arch (4). A tie rod (10) is installed on one side of the precast connecting block (11) through a metal connecting plate (14) and a connecting bolt (15). One end of the tie rod (10) passes through the strip-shaped sliding hole (13). A locking nut (12) is sleeved on one end of the tie rod (10), and the locking nut (12) is located outside the strip-shaped sliding hole (13).

2. The prefabricated beam according to claim 1, characterized in that: Precast edge strips (8) are provided on both sides of the bottom of the precast beam (9), and precast triangular plates (7) integrally formed with the precast beam (9) are provided at equal intervals on the inner side of the connection between the precast edge strips (8) and the precast beam (9).

3. The prefabricated beam according to claim 1, characterized in that: At both ends of the bottom of the precast beam (9) and on the outside of the precast arch (4), there are precast pad stones (6) integrally formed with the precast beam (9).

4. The prefabricated beam according to claim 3, characterized in that: The bottom of the precast pad stone (6) is provided with a limiting groove (5) to facilitate the limiting of the beam support.

5. A prefabricated precast beam according to claim 1, characterized in that: One end of the tie rod (10) is provided with an external thread that matches the locking nut (12).

6. A prefabricated assembly beam according to claim 1, characterized in that: The precast beams (9), precast arches (4), precast hanging slabs (1), horizontal precast slabs (2), and triangular precast blocks (3) are all integrally cast.

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