A connection structure of precast concrete secondary beam and cast-in-place reinforced concrete corbel
By using anchor bars and grouting fixing technology in the connection structure between precast concrete secondary beams and cast-in-place reinforced concrete beef legs, the problem of unstable connection between secondary beams and beef legs in the existing technology is solved, rapid and precise alignment and stable connection are achieved, and construction efficiency is improved.
Patent Information
- Application Number
- CN202420656577.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-01
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-04-01
AI Technical Summary
During the construction of large-scale mechanical ventilation tower structural beams, it is difficult for the prior art to achieve accurate and stable fixed connection between precast concrete sub-beams and cast-in-place reinforced concrete beef legs.
A connection structure between precast concrete secondary beams and cast-in-place reinforced concrete beef legs is designed. By setting upwardly protruding anchor bars on the concrete beef legs, and corresponding anchor bar docking reserved holes are set on the precast concrete secondary beams, fixing them with concrete grouting to achieve alignment and connection.
This connecting structure can realize the rapid and accurate alignment and accurate fixed connection between precast concrete sub-beams and cast-in-place reinforced concrete beef legs, which is easy to operate and improves construction efficiency.
Smart Images
Figure CN222701178U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of building construction, in particular to a connection structure of a precast concrete secondary beam and a cast-in-place reinforced concrete corbel. Background Art
[0002] During the construction of the structural beam of a large mechanical ventilation tower, it is necessary to hoist the precast concrete secondary beam into place and connect it to the corbel reliably and conveniently after the cast-in-place concrete corbel is cast. The existing construction method generally adopts the shelving construction method, that is, the end of the secondary beam is directly placed on the corbel or lug on the side of the main beam. This method is the most convenient, but there are the following main problems during the shelving process: (1) It is difficult to align the end of the secondary beam when it is placed on the corbel; (2) It is difficult to achieve an accurate and stable fixed connection between the secondary beam and the corbel. Utility Model Content
[0003] In view of the deficiencies in the prior art, the utility model proposes a connection structure between a precast concrete secondary beam and a cast-in-place reinforced concrete corbel, which can facilitate rapid and accurate alignment of the secondary beam and the corbel, and can also achieve an accurate and stable fixed connection between the secondary beam and the corbel.
[0004] To realize the above technical scheme, the utility model provides a connection structure of a precast concrete secondary beam and a cast-in-place reinforced concrete corbel, comprising: a concrete corbel and a precast concrete secondary beam, the concrete corbel is arranged in an "L" shape, the bottom lateral end of the "L"-shaped concrete corbel is provided with an anchor bar protruding upward, the precast concrete secondary beam is provided with an anchor bar docking reserved hole corresponding to the anchor bar protruding upward on the concrete corbel, after the anchor bar protruding upward on the concrete corbel is inserted into the anchor bar docking reserved hole on the precast concrete secondary beam, it is fixed by pouring concrete grouting into the anchor bar docking reserved hole, and the gap between the inner side of the vertical surface of the precast concrete secondary beam and the inner side of the vertical surface of the concrete corbel is also fixed by pouring concrete grouting.
[0005] In the above technical scheme, during actual work, after the concrete corbel is cast in situ, it is only necessary to lift the precast concrete secondary beam, and then align the anchor bar connection reserved holes set on the precast concrete secondary beam with the anchor bars protruding upward on the concrete corbel, so that the precast concrete secondary beam and the concrete corbel can be quickly and accurately aligned, and then concrete grouting is poured into the anchor bar connection reserved holes and the gap between the inner side of the vertical surface of the precast concrete secondary beam and the inner side of the vertical surface of the concrete corbel to fix them, so that the precise and stable connection between the precast concrete secondary beam and the cast-in-place reinforced concrete corbel can be achieved, and the operation is very convenient.
[0006] Preferably, the precast concrete secondary beam comprises a precast concrete secondary beam body, and the left and right ends of the precast concrete secondary beam body are respectively provided with anchor bar connection reserved holes by burying hollow glass fiber reinforced plastic pipes. The anchor bar connection reserved holes made by using hollow glass fiber reinforced plastic pipes have a stable structure and are convenient for subsequent rapid positioning and connection.
[0007] Preferably, a plurality of longitudinal reserved holes are arranged in parallel and spaced in a transverse direction on the front side surface of the precast concrete secondary beam body and penetrate the precast concrete secondary beam body in a longitudinal direction, and a plurality of transverse reserved holes are arranged in parallel and spaced in a longitudinal direction on the left side surface of the precast concrete secondary beam body and penetrate the precast concrete secondary beam body in a transverse direction. The provision of transverse reserved holes and longitudinal reserved holes can facilitate the subsequent external installation of the precast concrete secondary beam body.
[0008] Preferably, a plurality of hooks are provided on the top side surface of the precast concrete secondary beam body to facilitate the overall lifting of the precast concrete secondary beam.
[0009] Preferably, four end corners at the bottom of the precast concrete secondary beam body are all provided with embedded angle steels to better protect the bottom end corners of the precast concrete secondary beam body.
[0010] Preferably, eight end corners of the precast concrete secondary beam body are provided with reinforcing steel bars to better protect the end corners of the precast concrete secondary beam body.
[0011] Preferably, the concrete corbel includes a concrete corbel body, a corbel casting steel bar ring is arranged in the concrete corbel body, the corbel casting steel bar ring is tightened by stirrups, oblique reinforcement bars are arranged on the corbel casting steel bar ring, and the anchor bars are arranged upward, protruding to the surface of the concrete corbel body and extending upward. The overall strength of the concrete corbel body is improved by arranging the corbel casting steel bar ring and the oblique reinforcement bars, and the anchor bars are arranged so as to better accurately position the corbel body with the precast concrete secondary beam body.
[0012] Preferably, a rubber pad is provided at the joint between the bottom of the precast concrete secondary beam and the concrete corbel, so as to better protect the bottom of the precast concrete secondary beam.
[0013] The beneficial effect of the connection structure of a precast concrete secondary beam and a cast-in-place reinforced concrete corbel provided by the utility model is that the connection structure of the precast concrete secondary beam and the cast-in-place reinforced concrete corbel is reasonably designed and convenient to construct, which can not only facilitate the rapid and accurate alignment of the secondary beam and the corbel, but also realize the accurate and stable fixed connection between the secondary beam and the corbel. In actual work, after the concrete corbel is cast-in-place, it is only necessary to lift the precast concrete secondary beam, and then align the anchor bar connection reserved hole set on the precast concrete secondary beam with the anchor bar protruding upward on the concrete corbel, so that the precast concrete secondary beam and the concrete corbel can be quickly and accurately aligned, and then concrete grouting is poured into the anchor bar connection reserved hole and the gap between the inner side of the vertical surface of the precast concrete secondary beam and the inner side of the vertical surface of the concrete corbel for fixing, so that the accurate and stable connection between the precast concrete secondary beam and the cast-in-place reinforced concrete corbel can be realized, and the operation is very convenient. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the overall assembly structure of the utility model.
[0015] Figure 2 It is a side sectional structural schematic diagram of the concrete corbel in the utility model.
[0016] Figure 3 It is a structural schematic diagram of the precast concrete secondary beam in the utility model.
[0017] Figure 4 for Figure 3 Sectional view of plane 1-1.
[0018] In the figure: 1. Concrete corbel; 11. Concrete corbel body; 12. Anchor bars; 13. Oblique reinforcement bars; 14. Corbel casting steel ring; 15. Stirrups; 2. Precast concrete secondary beam; 21. Precast concrete secondary beam body; 22. Anchor bar butt reserved holes; 23. Longitudinal reserved holes; 24. Hook; 25. Reinforcement bars; 26. Embedded angle steel; 27. Horizontal reserved holes; 3. Rubber pads; 4. Concrete grouting. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. All other embodiments obtained by ordinary personnel in this field without creative work are within the scope of protection of the utility model.
[0020] Embodiment: A connection structure of a precast concrete secondary beam and a cast-in-place reinforced concrete corbel.
[0021] Reference Figures 1 to 4As shown, a connection structure of a precast concrete secondary beam and a cast-in-place reinforced concrete corbel comprises: a concrete corbel 1 and a precast concrete secondary beam 2, wherein the concrete corbel 1 is arranged in an "L" shape, and the "L"-shaped concrete corbel comprises a concrete corbel body 11, wherein a corbel casting steel bar ring 14 is arranged in the concrete corbel body 11, and the corbel casting steel bar ring 14 is fastened by a stirrup 15, and an oblique reinforcing bar 13 is arranged on the corbel casting steel bar ring 14, and an anchor bar 12 is arranged upwardly and protrudes to the surface of the concrete corbel body 11 and extends upwardly, the corbel casting steel bar ring 14 and the oblique reinforcing bar 13 are arranged so as to improve the overall strength of the concrete corbel body 11, and the anchor bar 12 is arranged so as to better accurately position the corbel body 11 with the precast concrete secondary beam 2.
[0022] The precast concrete secondary beam 2 includes a precast concrete secondary beam body 21. The left and right ends of the precast concrete secondary beam body 21 are respectively provided with anchor bar connection reserved holes 22 by burying hollow glass fiber reinforced plastic pipes. The anchor bar connection reserved holes 22 made by using hollow glass fiber reinforced plastic pipes are stable in structure and convenient for subsequent rapid positioning and connection. A plurality of longitudinal reserved holes 23 are arranged in parallel and spaced along the transverse direction on the front side surface of the precast concrete secondary beam body 21 and penetrate the precast concrete secondary beam body 21 in the longitudinal direction. A plurality of transverse reserved holes 27 are arranged in parallel and spaced along the longitudinal direction on the left side surface of the precast concrete secondary beam body 21 and penetrate the precast concrete secondary beam body 21 in the transverse direction. The subsequent external installation of the precast concrete secondary beam body 21 can be facilitated by providing the transverse reserved holes 27 and the longitudinal reserved holes 23. A plurality of hooks 24 are arranged on the top side surface of the precast concrete secondary beam body 21 to facilitate the overall lifting of the precast concrete secondary beam 2. The four end corners at the bottom of the precast concrete secondary beam body 21 are all provided with embedded angle steels 26 to better protect the bottom end corners of the precast concrete secondary beam body 21. The eight end corners of the precast concrete secondary beam body 21 are all provided with reinforcing steel bars 25 to better protect the end corners of the precast concrete secondary beam body 21.
[0023] After the anchor bar 12 protruding upward on the concrete corbel 1 is inserted into the anchor bar joint reserved hole 22 on the precast concrete secondary beam 2, it is fixed by pouring concrete grouting 4 into the anchor bar joint reserved hole 22, and the gap between the inner side of the vertical surface of the precast concrete secondary beam 2 and the inner side of the vertical surface of the concrete corbel 1 is also fixed by pouring concrete grouting 4. A rubber pad 3 is provided at the overlap between the bottom of the precast concrete secondary beam 2 and the concrete corbel 1 to better protect the bottom of the precast concrete secondary beam 2.
[0024] The connection structure of the precast concrete secondary beam and the cast-in-place reinforced concrete corbel is reasonably designed and convenient to construct. It can not only facilitate the rapid and accurate alignment of the precast concrete secondary beam 2 and the cast-in-place reinforced concrete corbel 1, but also realize the accurate and stable fixed connection between the precast concrete secondary beam 2 and the cast-in-place reinforced concrete corbel 1. In actual work, after the concrete corbel 1 is cast-in-place, it is only necessary to lift the precast concrete secondary beam 2, and then align the anchor bar joint reserved hole 22 set on the precast concrete secondary beam 2 with the anchor bar 12 protruding upward on the concrete corbel 1, so that the precast concrete secondary beam 2 and the concrete corbel 1 can be quickly and accurately aligned, and then the concrete grouting 4 is poured into the gap between the anchor bar joint reserved hole 22 and the vertical surface inner side of the precast concrete secondary beam 2 and the vertical surface inner side of the concrete corbel 1 for fixing, so that the accurate and stable connection between the precast concrete secondary beam 2 and the cast-in-place reinforced concrete corbel 1 can be realized, and the operation is very convenient.
[0025] The above is only a preferred embodiment of the present invention, but the present invention should not be limited to the contents disclosed in the embodiment and the drawings, so any equivalent or modification completed without departing from the spirit disclosed in the present invention shall fall within the scope of protection of the present invention.
Claims
1. A connection structure of a precast concrete secondary beam and a cast-in-place reinforced concrete corbel, comprising a concrete corbel and a precast concrete secondary beam, characterized in that: The concrete corbel is arranged in an "L" shape, and an upwardly protruding anchor bar is arranged at the bottom lateral end of the L"-shaped concrete corbel. The precast concrete secondary beam is provided with an anchor bar docking reserved hole corresponding to the anchor bar protruding upward on the concrete corbel. After the anchor bar protruding upward on the concrete corbel is inserted into the anchor bar docking reserved hole on the precast concrete secondary beam, it is fixed by pouring concrete grouting into the anchor bar docking reserved hole, and the gap between the inner side of the vertical surface of the precast concrete secondary beam and the inner side of the vertical surface of the concrete corbel is also fixed by pouring concrete grouting.
2. The connection structure of the precast concrete secondary beam and the cast-in-place reinforced concrete corbel as claimed in claim 1, characterized in that: The precast concrete secondary beam comprises a precast concrete secondary beam body, and left and right ends of the precast concrete secondary beam body are respectively provided with anchor bar butt-jointing reserved holes by burying hollow glass fiber reinforced plastic pipes.
3. The connection structure of the precast concrete secondary beam and the cast-in-place reinforced concrete corbel as claimed in claim 2, characterized in that: A plurality of longitudinal reserved holes are arranged in parallel and spaced apart in the transverse direction on the front side surface of the precast concrete secondary beam body and penetrate the precast concrete secondary beam body in the longitudinal direction. A plurality of transverse reserved holes are arranged in parallel and spaced apart in the longitudinal direction on the left side surface of the precast concrete secondary beam body and penetrate the precast concrete secondary beam body in the transverse direction.
4. The connection structure of the precast concrete secondary beam and the cast-in-place reinforced concrete corbel as claimed in claim 3, characterized in that: A plurality of hooks are arranged on the top side surface of the precast concrete secondary beam body.
5. The connection structure of the precast concrete secondary beam and the cast-in-place reinforced concrete corbel as claimed in claim 4, characterized in that: Embedded angle steels are arranged at four end corners of the bottom of the precast concrete secondary beam body.
6. The connection structure of the precast concrete secondary beam and the cast-in-place reinforced concrete corbel as claimed in claim 5, characterized in that: The eight end corners of the precast concrete secondary beam body are all provided with reinforcing steel bars.
7. The connection structure of the precast concrete secondary beam and the cast-in-place reinforced concrete corbel as claimed in claim 1, characterized in that: The concrete corbel comprises a concrete corbel body, in which a corbel casting steel bar ring is arranged, the corbel casting steel bar ring is tightened by stirrups, oblique reinforcement bars are arranged on the corbel casting steel bar ring, and the anchor bars are arranged upward, protrude to the surface of the concrete corbel body and extend upward.
8. The connection structure of the precast concrete secondary beam and the cast-in-place reinforced concrete corbel as claimed in claim 1, characterized in that: Rubber pads are provided at the joints between the bottom of the precast concrete secondary beam and the concrete corbel.