Midspan reinforcement structure of unequal-height beam
By adopting a combined structure of pre-embedded main top reinforcement, pre-embedded main bottom reinforcement and stirrup in unequal grove, and setting up a mid-span reinforcement assembly at the junction of the beam body, the problem that the differential requirements of beams under different spans and stress conditions in the prior art are not fully considered, and the efficient earthquake resistance of the beam body and the improvement of structural strength are achieved.
Patent Information
- Application Number
- CN202421581507.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-05
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-07-05
AI Technical Summary
The prior art fails to fully consider the different needs of beams under different spans and stress conditions, resulting in unreasonable material use, and there may be problems of insufficient load-bearing capacity or waste of materials.
The unequal grove mid-span reinforcement structure is adopted, and the internal reinforcement frame of the beam body is formed by the embedded main top reinforcement and the embedded main bottom reinforcement. The structural strength of the beam body is enhanced by stirrups. The middle-span reinforcement component is set at the junction of the unequal height of the beam body to enhance the connection strength.
It enhances the seismic resistance and structural strength of the beam body, extends the service life, and improves the bearing capacity of the beam body under different spans and stress conditions.
Smart Images
Figure CN222759225U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of structural engineering, in particular to a mid-span reinforcement structure of unequal-height beams. Background Art
[0002] Unequal height beams refer to beams with different cross-sectional heights or beam heights at different spans or different positions of the same beam in a building structure. Mid-span reinforcement refers to a set of longitudinal reinforcement added to the cantilever part of the beam, which is mainly used to withstand the bending moment and shear force of the beam. It is usually laid on the bottom surface of the beam, and the number and diameter of the mid-span reinforcement should be constructed according to the design requirements.
[0003] In reality, some buildings have different height differences within the same column span (such as the change of stair tread position, such as the partial lowering of the slab in some atriums to set up pools and tree pools, etc.), and the next floor has higher requirements for the net height under the beam (such as the high requirements for the net height under the equipment pipeline or the decoration ceiling). At this time, such buildings with higher requirements for vertical space need to adopt a variable cross-section steel bar arrangement structure with uneven beam surface, uneven beam bottom and different beam heights.
[0004] At present, in construction projects, beams are the main load-bearing and force-transmitting components, and their cross-sectional height and reinforcement are usually uniformly set according to design specifications and experience. However, this uniform setting method fails to fully consider the different requirements of beams under different spans and stress conditions, resulting in unreasonable use of materials, and there may be problems such as insufficient bearing capacity or material waste. Utility Model Content
[0005] In view of the above-mentioned problems existing in the prior art: failure to fully consider the differentiated demands of beams under different spans and stress conditions, resulting in unreasonable use of materials, possible problems of insufficient bearing capacity or waste of materials, the main purpose of the utility model is to provide a mid-span reinforcement structure for beams of unequal height.
[0006] The technical solution of the utility model is as follows: a mid-span reinforcement structure of an unequal-height beam, comprising two parallel concrete columns, a concrete beam body fixedly connected between the two concrete columns, the concrete beam body comprising a first beam body and a second beam body cast in one piece, the inner top of the concrete beam body being provided with symmetrically distributed embedded main top bars, the inner bottom of the first beam body being provided with symmetrically distributed first embedded main bottom bars, the inner bottom of the second beam body being provided with symmetrically distributed second embedded main bottom bars, a plurality of first stirrups being fixedly sleeved in sequence along the length direction of the concrete beam body on the outer sides of the embedded main top bars and the first embedded main bottom bars, a plurality of second stirrups being fixedly sleeved in sequence along the length direction of the concrete beam body on the outer sides of the embedded main top bars and the second embedded main bottom bars, the first stirrups being located on the inner side of the first beam body, the second stirrups being located on the inner side of the second beam body, and a mid-span reinforcement assembly being provided between the interior of the first beam body and the interior of the second beam body.
[0007] By adopting the above technical scheme, the embedded main top reinforcement and the first embedded main bottom reinforcement constitute the internal reinforcement skeleton of the first beam body, and the structural strength of the first beam body is enhanced by the first hoop reinforcement. The embedded main top reinforcement and the second embedded main bottom reinforcement constitute the internal reinforcement skeleton of the second beam body, and the structural strength of the second beam body is enhanced by the second hoop reinforcement. A mid-span reinforcement component is arranged at the intersection of the first beam body and the second beam body with unequal heights to enhance the connection strength between the two, thereby enhancing the seismic resistance of the structure and thus extending its service life.
[0008] As a preferred embodiment, the mid-span reinforcement assembly includes a first reinforcing reinforcement and a second reinforcing reinforcement arranged crosswise, one end of the first reinforcing reinforcement is bent and embedded in the first beam body and fixedly connected to the top of the first stirrup, and the other end is bent and embedded in the second beam body and fixedly connected to the bottom of the second stirrup, one end of the second reinforcing reinforcement is bent and embedded in the first beam body and fixedly connected to the bottom of the first stirrup, and the other end is bent and embedded in the second beam body and fixedly connected to the top of the second stirrup.
[0009] By adopting the above technical scheme, the two ends of the first strengthening reinforcement and the second strengthening reinforcement are respectively embedded in the inside of the first beam body and the second beam body, and are fixedly connected to the first stirrup and the second stirrup, which greatly enhances the structural strength at the junction of the first beam body and the second beam body, shares the longitudinal stress for the embedded main top reinforcement, the first embedded main bottom reinforcement and the second embedded main bottom reinforcement, significantly improves the stability of the connection between the first beam body and the second beam body, and has good seismic resistance.
[0010] As a preferred implementation, the intersection of the first reinforcement bars and the second reinforcement bars are welded together.
[0011] By adopting the above technical solution, the first strengthening reinforcement and the second strengthening reinforcement form a whole, thereby enhancing the structural strength thereof and further improving the stability of the connection between the first beam body and the second beam body.
[0012] As a preferred implementation, a Z-shaped steel bar is integrally connected between the first pre-embedded main bottom reinforcement and the second pre-embedded main bottom reinforcement.
[0013] By adopting the above technical solution, the first pre-embedded main bottom reinforcement and the second pre-embedded main bottom reinforcement form a whole, thereby enhancing the structural strength thereof and further improving the stability of the connection between the first beam body and the second beam body.
[0014] As a preferred implementation, the structure of the first stirrups is adapted to the cross-section of the first beam, and the structure of the second stirrups is adapted to the cross-section of the second beam.
[0015] By adopting the above technical solution, the first stirrup and the second stirrup can be evenly stressed, which can enhance the seismic resistance of the structure and thus extend the service life.
[0016] As a preferred implementation, the distance between two adjacent first stirrups is equal to the distance between two adjacent second stirrups.
[0017] By adopting the above technical solution, the first stirrups and the second stirrups can be evenly stressed, which can enhance the seismic resistance of the structure and thus increase its service life.
[0018] Compared with the prior art, the advantages and positive effects of the utility model are:
[0019] In the utility model, the internal steel skeleton of the first beam is formed by the embedded main top reinforcement and the first embedded main bottom reinforcement, and the structural strength of the first beam is enhanced by the first stirrup, the internal steel skeleton of the second beam is formed by the embedded main top reinforcement and the second embedded main bottom reinforcement, and the structural strength of the second beam is enhanced by the second stirrup, and the mid-span reinforcement assembly is arranged at the intersection of the first beam and the second beam at different heights to enhance the connection strength between the two, thereby enhancing the seismic resistance of the structure and thus extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is an overall stereogram of the utility model;
[0021] Figure 2 This is a schematic diagram of the internal structure of the concrete beam of the utility model;
[0022] Figure 3 It is a cross-sectional schematic diagram of the concrete beam body of the utility model;
[0023] Figure 4 For this utility model Figure 2 Enlarged view of point A in the middle.
[0024] Legend: 1. Concrete column; 2. Concrete beam; 201. First beam; 202. Second beam; 3. Embedded main top reinforcement; 4. First embedded main bottom reinforcement; 5. Second embedded main bottom reinforcement; 6. First stirrup; 7. Second stirrup; 8. Mid-span reinforcement assembly; 801. First strengthening reinforcement; 802. Second strengthening reinforcement; 9. Z-shaped reinforcement. DETAILED DESCRIPTION
[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.
[0026] Reference Figure 1-4 A reinforcement structure for the mid-span of an unequal-height beam comprises two parallel concrete columns 1, a concrete beam body 2 is fixedly connected between the two concrete columns 1, the concrete beam body 2 comprises a first beam body 201 and a second beam body 202 which are cast in one piece, the inner top of the concrete beam body 2 is provided with symmetrically distributed embedded main top bars 3, the inner bottom of the first beam body 201 is provided with symmetrically distributed first embedded main bottom bars 4, the inner bottom of the second beam body 202 is provided with symmetrically distributed second embedded main bottom bars 5, a plurality of first stirrups 6 are fixedly sleeved on the outer sides of the embedded main top bars 3 and the first embedded main bottom bars 4 in sequence along the length direction of the concrete beam body 2, a plurality of second stirrups 7 are fixedly sleeved on the outer sides of the embedded main top bars 3 and the second embedded main bottom bars 5 in sequence along the length direction of the concrete beam body 2, and the first stirrups 7 are fixedly sleeved on the outer sides of the embedded main top bars 3 and the second embedded main bottom bars 5 in sequence along the length direction of the concrete beam body 2. A stirrup 6 is located on the inner side of the first beam body 201, and a second stirrup 7 is located on the inner side of the second beam body 202. A mid-span reinforcement assembly 8 is provided between the interior of the first beam body 201 and the interior of the second beam body 202. The embedded main top reinforcement 3 and the first embedded main bottom reinforcement 4 constitute the internal steel skeleton of the first beam body 201, and the structural strength of the first beam body 201 is enhanced by the first stirrup 6. The embedded main top reinforcement 3 and the second embedded main bottom reinforcement 5 constitute the internal steel skeleton of the second beam body 202, and the structural strength of the second beam body 202 is enhanced by the second stirrup 7. A mid-span reinforcement assembly 8 is provided at the intersection of the first beam body 201 and the second beam body 202 at different heights to enhance the connection strength between the two, thereby enhancing the seismic resistance of the structure and thus extending its service life.
[0027] Reference Figure 3 and Figure 4The mid-span reinforcement assembly 8 includes a first reinforcing reinforcement 801 and a second reinforcing reinforcement 802 arranged crosswise, one end of the first reinforcing reinforcement 801 is bent and embedded in the first beam body 201 and fixedly connected to the top of the first stirrup 6, and the other end is bent and embedded in the second beam body 202 and fixedly connected to the bottom of the second stirrup 7, one end of the second reinforcing reinforcement 802 is bent and embedded in the first beam body 201 and fixedly connected to the bottom of the first stirrup 6, and the other end is bent and embedded in the second beam body 202 It is fixedly connected to the top of the second stirrup 7. The two ends of the first strengthening reinforcement 801 and the second strengthening reinforcement 802 are respectively embedded in the inside of the first beam 201 and the second beam 202, and are fixedly connected to the first stirrup 6 and the second stirrup 7, which greatly enhances the structural strength at the junction of the first beam and the second beam, shares the longitudinal stress for the embedded main top reinforcement 3, the first embedded main bottom reinforcement 4 and the second embedded main bottom reinforcement 5, significantly improves the stability of the connection between the first beam 201 and the second beam 202, and has good seismic resistance.
[0028] Reference Figure 4 The intersection of the first reinforcing reinforcement 801 and the second reinforcing reinforcement 802 is welded together, so that the first reinforcing reinforcement 801 and the second reinforcing reinforcement 802 form a whole, thereby enhancing the structural strength and further improving the stability of the connection between the first beam body 201 and the second beam body 202.
[0029] Reference Figure 4 A Z-shaped steel bar 9 is integrally connected between the first pre-embedded main bottom reinforcement 4 and the second pre-embedded main bottom reinforcement 5, so that the first pre-embedded main bottom reinforcement 4 and the second pre-embedded main bottom reinforcement 5 form a whole, thereby enhancing their structural strength and further improving the stability of the connection between the first beam body 201 and the second beam body 202.
[0030] Reference Figure 1 and Figure 2 The structure of the first stirrup 6 is adapted to the cross-section of the first beam body 201, and the structure of the second stirrup 7 is adapted to the cross-section of the second beam body 202, so that the first stirrup 6 and the second stirrup 7 can be evenly stressed, which can enhance the seismic resistance of the structure and thus extend its service life.
[0031] Reference Figure 2 The spacing between two adjacent first stirrups 6 is equal to the spacing between two adjacent second stirrups 7, so that the first stirrups 6 and the second stirrups 7 can be evenly stressed, which can enhance the seismic resistance of the structure and thus increase its service life.
[0032] Working principle: The internal steel skeleton of the first beam body 201 is formed by the embedded main top reinforcement 3 and the first embedded main bottom reinforcement 4, and the structural strength of the first beam body 201 is enhanced by the first hoop reinforcement 6, the internal steel skeleton of the second beam body 202 is formed by the embedded main top reinforcement 3 and the second embedded main bottom reinforcement 5, and the structural strength of the second beam body 202 is enhanced by the second hoop reinforcement 7, and the mid-span reinforcement component 8 is arranged at the intersection of the first beam body 201 and the second beam body 202 at different heights to enhance the connection strength between the two, so as to enhance the seismic resistance of the structure and thus extend the service life; the first reinforcing reinforcement 801 and the second reinforcing reinforcement 802 are welded together at the intersection The reinforcing reinforcement 801 and the second reinforcing reinforcement 802 form a whole, which enhances the structural strength and further improves the stability of the connection between the first beam 201 and the second beam 202. In addition, the two ends of the first reinforcing reinforcement 801 and the second reinforcing reinforcement 802 are respectively embedded in the first beam 201 and the second beam 202, and are fixedly connected to the first stirrup 6 and the second stirrup 7, which greatly enhances the structural strength at the junction of the first beam and the second beam, shares the longitudinal stress for the embedded main top reinforcement 3, the first embedded main bottom reinforcement 4 and the second embedded main bottom reinforcement 5, significantly improves the stability of the connection between the first beam 201 and the second beam 202, and has good seismic resistance.
[0033] The above are only preferred embodiments of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. A mid-span reinforcement structure of an unequal-height beam, comprising two parallel concrete columns (1), characterized in that: A concrete beam body (2) is fixedly connected between the two concrete columns (1), the concrete beam body (2) comprising a first beam body (201) and a second beam body (202) cast in one piece, the inner top of the concrete beam body (2) is provided with symmetrically distributed pre-embedded main top reinforcements (3), the inner bottom of the first beam body (201) is provided with symmetrically distributed first pre-embedded main bottom reinforcements (4), the inner bottom of the second beam body (202) is provided with symmetrically distributed second pre-embedded main bottom reinforcements (5), the pre-embedded main top reinforcements (3) and the first pre-embedded main bottom reinforcements (4) are symmetrically distributed, and the inner bottom of the second beam body (202) is provided with symmetrically distributed second pre-embedded main bottom reinforcements (5). A plurality of first stirrups (6) are fixedly sleeved in sequence on the outer side of the bottom reinforcement (4) along the length direction of the concrete beam body (2); a plurality of second stirrups (7) are fixedly sleeved in sequence on the outer side of the embedded main top reinforcement (3) and the second embedded main bottom reinforcement (5) along the length direction of the concrete beam body (2); the first stirrups (6) are located on the inner side of the first beam body (201); the second stirrups (7) are located on the inner side of the second beam body (202); and a mid-span reinforcement assembly (8) is provided between the interior of the first beam body (201) and the interior of the second beam body (202).
2. The mid-span reinforcement structure of unequal height beams according to claim 1 is characterized in that: The mid-span reinforcement assembly (8) comprises a first reinforcing reinforcement (801) and a second reinforcing reinforcement (802) which are arranged crosswise, wherein one end of the first reinforcing reinforcement (801) is bent and embedded in the first beam body (201) and fixedly connected to the top of the first stirrup (6), and the other end is bent and embedded in the second beam body (202) and fixedly connected to the bottom of the second stirrup (7); one end of the second reinforcing reinforcement (802) is bent and embedded in the first beam body (201) and fixedly connected to the bottom of the first stirrup (6), and the other end is bent and embedded in the second beam body (202) and fixedly connected to the top of the second stirrup (7).
3. The mid-span reinforcement structure of unequal height beams according to claim 2 is characterized in that: The intersections of the first reinforcing reinforcement (801) and the second reinforcing reinforcement (802) are welded together.
4. The mid-span reinforcement structure of unequal height beams according to claim 1 is characterized in that: A Z-shaped steel bar (9) is integrally connected between the first pre-embedded main bottom reinforcement (4) and the second pre-embedded main bottom reinforcement (5).
5. The mid-span reinforcement structure of unequal height beams according to claim 1 is characterized in that: The structure of the first stirrup (6) is adapted to the cross section of the first beam body (201), and the structure of the second stirrup (7) is adapted to the cross section of the second beam body (202).
6. The mid-span reinforcement structure of unequal height beams according to claim 1 is characterized in that: The distance between two adjacent first stirrups (6) is equal to the distance between two adjacent second stirrups (7).