A post-anchoring tendon cantilever plate tension steel connecting structure

Abstract

The utility model relates to a kind of rear planting bar cantilever slab tensioned steel bar connecting structure, including upper horizontal steel bar, lower horizontal steel bar, upper horizontal steel bar passes through the perforation being provided on vertical wall body, and the upper horizontal steel bar one end extends to the place above inside floor slab, and the upper horizontal steel bar one end is between the place above inside floor slab, and it is equipped with the protective layer for enhancing the stability of tensioned steel bar connecting structure;The other end of upper horizontal steel bar protrudes from the side of vertical wall body, one end of lower horizontal steel bar is embedded and fixed in vertical wall body, the other end is located below upper horizontal steel bar, and longitudinal steel bar is tied between upper horizontal steel bar and lower horizontal steel bar, and cantilever slab is poured on upper horizontal steel bar, lower horizontal steel bar and longitudinal steel bar by pouring mould;The utility model has the beneficial effects that: by passing through vertical wall body with upper horizontal steel bar and setting protective layer on the end of passing through, so that the cantilever slab formed by pouring has the advantages of structural stability, prevent collapse.

Description

Technical Field

[0001] This utility model belongs to the field of post-reinforcement construction technology, and particularly relates to a post-reinforcement cantilever slab tensile reinforcement connection structure. Background Technology

[0002] In recent years, renovation and upgrading projects have become increasingly common, frequently employing post-reinforcement technology for cantilever slabs, such as cantilever canopies. However, due to non-standard post-reinforcement techniques and inconsistent quality of materials like the adhesives used, numerous cases of cantilever slab collapse have occurred. Current methods for post-reinforcement in cantilever slabs typically involve excavating a groove in the existing wall, inserting one end of the rebar into the groove, and then filling the groove with adhesive. This method of connecting the tensile reinforcement in the cantilever slab with post-reinforcement can lead to unstable connections and, over time, collapse. Summary of the Invention

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a structurally stable and collapse-proof post-reinforced cantilever slab tensile steel bar connection structure.

[0004] The purpose of this utility model is achieved through the following technical solution: This post-installed rebar cantilever slab tensile reinforcement connection structure includes upper horizontal rebars and lower horizontal rebars. The upper horizontal rebars pass through holes provided in the vertical wall, and one end of the upper horizontal rebars extends to the top of the inner floor slab. A protective layer for enhancing the stability of the tensile reinforcement connection structure is provided between one end of the upper horizontal rebars and the top of the inner floor slab. The other end of the upper horizontal rebars extends out from one side of the vertical wall. One end of the lower horizontal rebars is embedded and fixed in the vertical wall, and the other end is located below the upper horizontal rebars. Longitudinal rebars are tied between the upper horizontal rebars and the lower horizontal rebars. A cantilever slab is cast on the upper horizontal rebars, the lower horizontal rebars, and the longitudinal rebars using a casting template.

[0005] The beneficial effects of this utility model are as follows: Compared with the prior art, by passing the upper horizontal steel bars through the vertical wall and setting a protective layer at one end of the passage, the cast-in-place cantilever slab has the advantages of structural stability and prevention of collapse.

[0006] Preferably, the protective layer includes a steel plate and anchor bolts. The steel plate is located above the inner floor slab, with one side abutting against the vertical wall. The steel plate has several through holes arranged along its length. The anchor bolts pass through the through holes and are anchored to the inner floor slab. One end of the upper horizontal reinforcing bar extending above the inner floor slab is welded and fixed to the steel plate. The steel plate and anchor bolts are then sealed and formed by concrete pouring. By setting the steel plate and using anchor bolts to fix the steel plate to the inner floor slab, with one end of the upper horizontal reinforcing bar welded and fixed to the steel plate and then sealed and formed by concrete pouring, the structure of the cantilever slab on the vertical wall is made more stable.

[0007] Preferably, the through holes are distributed in a zigzag pattern along the length of the steel plate, and the through holes are racetrack-shaped. The zigzag staggered distribution makes the anchoring force points between the steel plate and the inner floor slab more uniform, and the racetrack-shaped through holes make adjustment during installation more convenient.

[0008] Preferably, one end of each of the upper horizontal reinforcing bars extending above the inner floor slab is located on both sides of the through hole. At one of the adjacent through holes, one end of each of the two upper horizontal reinforcing bars located on both sides of the through hole is bent, and the bent portions of the two upper horizontal reinforcing bars are welded and fixed together. Through the above structure, the cohesion between the upper horizontal reinforcing bars is better, thereby making the cantilever slab structure on the vertical wall more stable.

[0009] Preferably, the protective layer also includes U-shaped reinforcing bars, which are welded and fixed to the steel plate and span across the width of the steel plate, located on both sides of the bent end of the upper horizontal reinforcing bar, and the U-shaped reinforcing bars are cast in concrete; the above structure makes the cantilever slab structure on the vertical wall more stable.

[0010] Preferably, the inner floor slab side in contact with the steel plate has a roughened structure; this improves the friction between the steel plate and the inner floor slab, resulting in better strength after the concrete is poured and formed.

[0011] Preferably, the side of the vertical wall facing the cantilever slab is provided with a groove, and the groove covers the upper horizontal reinforcing bar and the lower horizontal reinforcing bar; this makes the joint force between the cantilever slab and the vertical wall better, thereby making the structure of the cantilever slab on the vertical wall more stable. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main structure of the post-installed rebar cantilever slab tensile rebar connection structure of this utility model.

[0013] Figure 2 yes Figure 1 A schematic diagram of the AA cross-sectional structure.

[0014] The labels in the attached diagram are as follows: 1. Top horizontal reinforcement; 2. Bottom horizontal reinforcement; 3. Vertical wall; 4. Inner floor slab; 5. Protective layer; 6. Longitudinal reinforcement; 7. Cantilever slab; 11. Bending section; 31. Perforation; 32. Groove; 51. Steel plate; 52. Anchor bolt; 53. Through hole; 54. U-shaped reinforcement. Detailed Implementation

[0015] The present invention will now be described in detail with reference to the accompanying drawings: as shown in the drawings Figure 1 , 2 As shown, this utility model includes an upper horizontal reinforcing bar 1 and a lower horizontal reinforcing bar 2. The upper horizontal reinforcing bar 1 passes through a through hole 31 provided on the vertical wall 3, and one end of the upper horizontal reinforcing bar 1 extends to the top of the inner floor slab 4. A protective layer 5 for enhancing the stability of the tensile reinforcing bar connection structure is provided between one end of the upper horizontal reinforcing bar 1 and the top of the inner floor slab 4. The other end of the upper horizontal reinforcing bar 1 extends out from one side of the vertical wall 3. One end of the lower horizontal reinforcing bar 2 is embedded and fixed in the vertical wall 3, and the other end is located below the upper horizontal reinforcing bar 1. A longitudinal reinforcing bar 6 is tied between the upper horizontal reinforcing bar 1 and the lower horizontal reinforcing bar 2. A cantilever slab 7 is poured on the upper horizontal reinforcing bar 1, the lower horizontal reinforcing bar 2 and the longitudinal reinforcing bar 6 through a casting template.

[0016] The protective layer 5 includes a steel plate 51 and anchor bolts 52. The steel plate 51 is located above the inner floor slab 4, and one side of it abuts against the vertical wall 3. The steel plate 51 has several through holes 53 arranged along the length of the steel plate. The anchor bolts 52 pass through the through holes 53 and are anchored to the inner floor slab 4. One end of the upper horizontal reinforcing bar 1 extending above the inner floor slab 4 is welded and fixed to the steel plate 51. The steel plate 51 and anchor bolts 52 are sealed and formed by concrete pouring.

[0017] The through holes 53 are distributed in a zigzag pattern along the length of the steel plate 51, and the through holes 53 are racetrack-shaped through holes.

[0018] One end of the upper horizontal steel bar 1 extending above the inner floor slab 4 is located on both sides of the through hole 53. At one of the through holes 53 adjacent to each other, one end of the two upper horizontal steel bars 1 located on both sides of the through hole 53 is bent, and the bent parts 11 of the two upper horizontal steel bars 1 are welded and fixed together.

[0019] The protective layer 5 also includes U-shaped steel bars 54, which are welded and fixed to the steel plate 51 and are laid across the width of the steel plate 51, located on both sides of the bent end of the upper horizontal steel bar 1. The U-shaped steel bars 54 are cast in concrete.

[0020] The inner floor slab 4 sides that are in contact with steel plate 51 have a roughened structure.

[0021] The side of the vertical wall 3 facing the cantilever slab 7 has a groove 32, and the groove 32 covers the upper horizontal steel bar 1 and the lower horizontal steel bar 2.

[0022] All the steel materials mentioned above are Q345B, and E55 series welding rods are used for on-site welding.

[0023] The casting method of the cantilever slab 7 of this utility model is as follows: First, a groove 32 is chiseled in the vertical wall 3, and a hole 31 is drilled in the vertical wall 3 at the groove using special equipment. The upper horizontal steel bar 1 passes through the hole 31, with one end located inside the protective layer and the other end located on the side of the cantilever slab 7. Then, the lower horizontal steel bar 2 is embedded in the vertical wall 3 at the groove, and the longitudinal steel bar 6 is tied. Finally, grout or structural adhesive is injected into the hole 31 and the vertical wall 3 where the lower horizontal steel bar 2 is embedded and filled. The cantilever slab 7 is cast on the upper horizontal steel bar 1, the lower horizontal steel bar 2 and the longitudinal steel bar 6 through the casting template.

[0024] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A post-anchored cantilever slab tension steel bar connecting structure, comprising upper transverse steel bars (1) and lower transverse steel bars (2), characterized in that: The upper horizontal steel bar (1) passes through the perforation (31) provided on the vertical wall (3), and one end of the upper horizontal steel bar (1) extends to the top of the inner floor slab (4). A protective layer (5) for enhancing the stability of the tensile steel bar connection structure is provided between one end of the upper horizontal steel bar (1) and the top of the inner floor slab (4). The other end of the upper horizontal steel bar (1) extends out from one side of the vertical wall (3). One end of the lower horizontal steel bar (2) is embedded and fixed in the vertical wall (3), and the other end is located below the upper horizontal steel bar (1). A longitudinal steel bar (6) is tied between the upper horizontal steel bar (1) and the lower horizontal steel bar (2). A cantilever slab (7) is poured on the upper horizontal steel bar (1), the lower horizontal steel bar (2) and the longitudinal steel bar (6) through a casting template.

2. The post-installed rebar cantilever slab tensile reinforcement connection structure according to claim 1, characterized in that: The protective layer (5) includes a steel plate (51) and anchor bolts (52). The steel plate (51) is located above the inner floor slab (4), and one side of it abuts against the vertical wall (3). The steel plate (51) has several through holes (53) arranged along the length of the steel plate. The anchor bolts (52) pass through the through holes (53) and are anchored to the inner floor slab (4). One end of the upper horizontal reinforcing bar (1) extending above the inner floor slab (4) is welded and fixed to the steel plate (51). The steel plate (51) and the anchor bolts (52) are sealed and formed by concrete pouring.

3. The post-installed rebar cantilever slab tensile reinforcement connection structure according to claim 2, characterized in that: The through holes (53) are distributed in a staggered zigzag pattern along the length of the steel plate (51), and the through holes (53) are racetrack-shaped through holes.

4. The post-installed rebar cantilever slab tensile reinforcement connection structure according to claim 2, characterized in that: One end of the upper horizontal steel bar (1) extending above the inner floor slab (4) is located on both sides of the through hole (53). At one of the through holes (53) of the adjacent through holes (53), one end of the two upper horizontal steel bars (1) located on both sides of the through hole (53) is bent, and the bent parts (11) of the two upper horizontal steel bars (1) are welded and fixed together.

5. The post-installed rebar cantilever slab tensile reinforcement connection structure according to claim 4, characterized in that: The protective layer (5) also includes a U-shaped steel bar (54), which is welded and fixed on the steel plate (51) and spans across the width of the steel plate (51), and is located on both sides of the bent end of the upper horizontal steel bar (1). The U-shaped steel bar (54) is cast in concrete.

6. The post-installed rebar cantilever slab tensile reinforcement connection structure according to claim 2, characterized in that: The inner floor slab (4) side in contact with the steel plate (51) has a roughened structure.

7. The post-installed rebar cantilever slab tensile reinforcement connection structure according to claim 1, characterized in that: The vertical wall (3) facing the cantilever plate (7) has a groove (32) on its side, and the groove (32) covers the upper horizontal steel bar (1) and the lower horizontal steel bar (2).

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