Connecting structure of secondary beam reinforcing steel bar and main beam when secondary beam goes upside down
By using a steel reinforcement cage at the connection between the secondary beam and the main beam, including reinforcement bars in the vertical and bent sections, a dense steel reinforcement network is formed, which solves the problem of insufficient structural strength at the connection node when the secondary beam is turned upwards, and achieves higher connection stability and resistance.
Patent Information
- Application Number
- CN202423059051.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-12-11
AI Technical Summary
In the existing technology, the structural strength at the connection node between the secondary beam and the main beam is relatively weak, especially when the secondary beam is reversed, the connection is not stable enough and it is difficult to effectively transfer stress.
The structure employs a reinforced steel cage, including reinforcing bars in the vertical and bent sections, main longitudinal bars, additional stirrups, additional vertical longitudinal bars, and tie bars, forming a tight steel reinforcement network that enhances the connection strength and stability between the secondary beams and the main beams.
It significantly improves the structural strength and stability of the connection node between the secondary beam and the main beam, enhances the shear and bending resistance, and improves the overall resistance and structural durability.
Smart Images
Figure CN223562338U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of reinforced concrete beam connection, in particular to a connecting structure of a secondary beam steel bar and a main beam when the secondary beam is inverted. BACKGROUND
[0002] At present, the connecting mode of the secondary beam and the main beam is an important part in building structure design, which ensures the integrity and stability of the structure system.
[0003] In actual construction process, according to the specific structure requirement of the building, we often encounter the situation that the top end of the secondary beam is higher than the main beam, that is, the secondary beam is inverted. In this construction mode, the end of the secondary beam needs to be effectively overlapped with the main beam. The specific operation is that the steel bars at the end of the secondary beam are overlapped with the steel bars of the main beam before pouring the concrete, and then the pouring work of the concrete is carried out. However, at the connecting joint of the secondary beam and the main beam, the structure strength is relatively weak due to the adoption of the overlapping mode. CONTENT OF THE UTILITY MODEL
[0004] In order to improve the structure strength at the connecting joint of the secondary beam and the main beam, the application provides a connecting structure of a secondary beam steel bar and a main beam when the secondary beam is inverted.
[0005] The application provides a connecting structure of a secondary beam steel bar and a main beam when the secondary beam is inverted, which adopts the following technical scheme:
[0006] The connecting structure of the secondary beam steel bar and the main beam when the secondary beam is inverted comprises a plurality of main bars and stirrups, a plurality of the main bars are distributed in a rectangular shape and extend into the main beam, a steel bar framework is included, the steel bar framework comprises reinforcing bars, the reinforcing bars comprise vertical parts and bent parts, one end of the vertical part is fixedly connected with the main bar, and the other end extends into the main beam, and the bent part is fixedly connected to the end of the vertical part extending into the main beam and extends into the main beam in the direction of the secondary beam.
[0007] By adopting the above technical scheme, the connecting strength of the secondary beam steel bar and the main beam steel bar is effectively enhanced by additionally arranging the steel bar framework and the reinforcing bars (including the vertical parts and the bent parts) thereof. The vertical parts extend deeply into the main beam, and a direct mechanical transmission path is provided. The bent parts further enhance the stability of the connection, prevent the structural weakness caused by the overlapping, and improve the stability and bearing capacity of the joint.
[0008] Optionally, the steel bar framework further comprises a plurality of main longitudinal bars and additional stirrups, the main longitudinal bars are parallel to the vertical parts of the reinforcing bars, one end of the main longitudinal bar is fixedly connected with the main beam steel bar, and the other end vertically extends into the secondary beam steel bar, and the additional stirrups surround the plurality of main longitudinal bars and the plurality of reinforcing bars, and are fixedly connected with the main bars and the vertical parts of the reinforcing bars.
[0009] By adopting the technical scheme, the main longitudinal reinforcement and the vertical part of the reinforcing reinforcement are arranged in parallel, and all the main longitudinal reinforcement and the reinforcing reinforcement are fixed by the additional stirrup to form a more compact and stable steel bar network. This structure not only improves the integrity of the connection, but also enhances the shear and bending resistance.
[0010] Optionally, the two ends of the main longitudinal reinforcement are fixedly connected with the folded edges extending towards the vertical part.
[0011] By adopting the technical scheme, the folded edges at the two ends of the main longitudinal reinforcement increase the bonding force with the surrounding concrete, and also improve the connection firmness between the main longitudinal reinforcement and the reinforcing reinforcement and the main beam reinforcement, which helps to disperse stress and improve the durability of the structure.
[0012] Optionally, the steel bar framework further comprises a plurality of additional vertical longitudinal reinforcements parallel to the main longitudinal reinforcement; the additional vertical longitudinal reinforcement is located between the main longitudinal reinforcement and the vertical part of the reinforcing reinforcement; one end of the additional vertical longitudinal reinforcement is fixedly connected with the main beam reinforcement, and the other end is fixedly connected with the additional stirrup.
[0013] By adopting the technical scheme, the introduction of the additional vertical longitudinal reinforcement further encrypts the steel bar framework, especially forms additional support between the main longitudinal reinforcement and the reinforcing reinforcement, enhances the rigidity and stability of the entire connection structure, and helps to resist external load.
[0014] Optionally, the steel bar framework further comprises a tie reinforcement, the tie reinforcement is fixedly connected with adjacent additional vertical longitudinal reinforcements and / or fixedly connected with adjacent main longitudinal reinforcements and vertical parts.
[0015] By adopting the technical scheme, the tie reinforcement effectively connects the adjacent additional vertical longitudinal reinforcement, main longitudinal reinforcement and vertical part together, forms a more integrated and cooperative steel bar network, and improves the overall resistance and stability of the connection structure.
[0016] Optionally, the steel bar framework further comprises a plurality of additional U-shaped stirrups, the additional U-shaped stirrup comprises a horizontal reinforcement and a vertical reinforcement fixedly connected at both ends of the horizontal reinforcement, and a plurality of the additional U-shaped stirrups are distributed at equal intervals along the main reinforcement direction of the secondary beam; the main reinforcement of the secondary beam is located in the additional U-shaped stirrup and is fixedly connected with the additional U-shaped stirrup; one end of the vertical reinforcement penetrates into the main beam and is fixedly connected with the main beam reinforcement.
[0017] By adopting the technical scheme, the addition of the additional U-shaped stirrup provides additional constraint and support for the main reinforcement of the secondary beam, and the vertical reinforcement of the additional U-shaped stirrup penetrates into the main beam and is fixedly connected with the main beam reinforcement, further enhancing the connection strength between the secondary beam and the main beam and improving the bearing capacity of the entire structure system.
[0018] Optionally, the end of the vertical reinforcement away from the horizontal reinforcement is fixed with a hook.
[0019] By adopting the technical scheme, the hook design of the vertical rib end increases the anchoring force with the main beam rib, and improves the reliability and stability of the connection.
[0020] Optionally, the reinforcing rib further comprises a secondary rib, which is fixed perpendicularly to the vertical part; one end of the secondary rib is fixedly connected to the hook.
[0021] By adopting the technical scheme, a more stable steel bar network structure is formed.
[0022] In summary, the present application includes at least one of the following beneficial effects:
[0023] 1. By adopting the steel bar framework composed of reinforcing ribs (including vertical parts and bent parts), main longitudinal ribs, additional hoop ribs, additional vertical longitudinal ribs, and tensioning ribs, the connection strength between the secondary beam steel bars and the main beam steel bars is effectively enhanced.
[0024] 2. The additional U-shaped hoop rib provides additional constraint and support for the main rib of the secondary beam, significantly enhancing the overall integrity and stability of the entire structural system, helping to resist external loads, reduce structural deformation, and thus prolong the service life of the building. BRIEF DESCRIPTION OF DRAWINGS
[0025] Figure 1 is a schematic diagram of the overall structure of Example 1;
[0026] Figure 2 is a schematic diagram of the overall structure of Example 2;
[0027] Figure 3 is Figure 2 a cross-sectional view of A-A in FIG. 1;
[0028] Figure 4 is a schematic diagram of the structure embodying the distribution of tensioning ribs in Example 2;
[0029] Figure 5 is a schematic diagram of the overall structure of Example 3;
[0030] Figure 6 is a schematic diagram of the structure embodying the additional U-shaped hoop rib in Example 3;
[0031] Figure 7 is a schematic diagram of the structure embodying the additional U-shaped hoop rib in Example 4.
[0032] Figure 8 is a schematic diagram of the structure embodying the additional U-shaped hoop rib in Example 4.
[0033] Explanation of reference signs: 1, secondary beam; 11, main reinforcement; 12, stirrup; 2, main beam; 3, steel reinforcement cage; 4, reinforcing bar; 41, vertical part; 42, bent part; 43, secondary reinforcement; 5, main longitudinal reinforcement; 51, folded edge; 6, additional stirrup; 7, additional vertical longitudinal reinforcement; 8, tie bar; 9, additional U-shaped stirrup; 91, cross reinforcement; 92, vertical reinforcement; 921, hook. DETAILED DESCRIPTION
[0034] The following will be described in detail below with reference to the accompanying drawings. Figures 1-8 The present application is further described in detail.
[0035] The present application discloses a connecting structure of secondary beam steel reinforcement and main beam, aiming at solving the problem of weak structure strength at the connecting joint of secondary beam and main beam in the prior art. In the present application, the secondary beam steel reinforcement includes a plurality of main reinforcements 11 and a plurality of stirrups 12, the plurality of main reinforcements 11 are distributed in a rectangular shape and extend into the main beam, and the plurality of stirrups 12 fix the plurality of main reinforcements 11 inside. In addition, in the present application, the connection and fixation between the steel reinforcements can be achieved by wire binding or welding, and the present application does not limit the fixation mode.
[0036] Embodiment 1
[0037] With reference to Figure 1 , a connecting structure of secondary beam steel reinforcement and main beam includes a steel reinforcement cage 3, and the steel reinforcement cage 3 includes a reinforcing bar 4. The reinforcing bar 4 includes a vertical part 41 and a bent part 42. One end of the vertical part 41 is fixedly connected with the main reinforcement 11, and the other end extends into the main beam 2. The bent part 42 is fixedly connected to the end of the vertical part 41 extending into the main beam 2, and extends into the bottom of the main beam 2 in the direction of the secondary beam 1. The vertical part 41 and the bent part 42 of the reinforcing bar 4 and the main reinforcement 11 can be fixedly connected by one-piece forming or welding.
[0038] The vertical part 41 extends into the inside of the main beam 2, and the bent part 42 extends into the bottom of the main beam 2 in the direction of the secondary beam 1, which can effectively disperse and transfer the stress at the connecting joint of the secondary beam 1 and the main beam 2, and improve the stability and carrying capacity of the joint.
[0039] Embodiment 2
[0040] With reference to Figure 2 , 3 , the steel reinforcement cage 3 further includes a plurality of main longitudinal reinforcements 5 and a plurality of additional stirrups 6. The main longitudinal reinforcements 5 are parallel to the vertical part 41 of the reinforcing bar 4, one end of the main longitudinal reinforcement 5 is fixedly connected with the main beam steel reinforcement, and the other end extends vertically to the main reinforcement 11 at the end of the secondary beam 1. The additional stirrups 6 enclose the plurality of main longitudinal reinforcements 5 and the plurality of reinforcing bars 4, and are fixedly connected with the main reinforcement 11 and the vertical part 41 of the reinforcing bar 4. The plurality of additional stirrups 6 are distributed at equal intervals along the length direction of the vertical part 41.
[0041] The additional stirrups 6 enclose all the main longitudinal bars 5 and the reinforcement bars 4, forming a more compact and stable steel bar network and providing additional support and fixation.
[0042] With reference to Figure 2 , both ends of the main longitudinal bars 5 are fixedly connected with the folded edges 51 extending towards the vertical portions 41, the folded edges 51 being perpendicular to the main longitudinal bars 5, and the folded edges 51 and the main longitudinal bars 5 can be fixedly connected by means of one-piece forming or welding. The folded edges 51 can increase the contact area of the main longitudinal bars 5 with the main beams 2 and the secondary beams 1, thereby improving the stability and pull-out resistance of the connection.
[0043] Further, with reference to Figure 2 , 3 , the steel bar framework 3 further comprises a plurality of additional vertical longitudinal bars 7 parallel to the main longitudinal bars 5. The additional vertical longitudinal bars 7 are located between the main longitudinal bars 5 and the vertical portions 41 of the reinforcement bars 4, one end of the additional vertical longitudinal bars 7 being fixedly connected with the main beam reinforcement and the other end being fixedly connected with the additional stirrups 6 in the region of the end of the secondary beam reinforcement. The introduction of the additional vertical longitudinal bars 7 further densifies the steel bar framework 3 and forms additional support between the main longitudinal bars 5 and the reinforcement bars 4, thereby enhancing the rigidity and stability of the entire connection structure and helping to resist external loads.
[0044] With reference to Figure 3 , 4 , the steel bar framework 3 further comprises tie bars 8 fixedly connecting adjacent additional vertical longitudinal bars 7 and / or fixedly connecting adjacent main longitudinal bars 5 and vertical portions 41.
[0045] That is, the connection mode of the tie bars 8 is various, one being that the tie bars 8 fixedly connect adjacent additional vertical longitudinal bars 7, another being that the tie bars 8 fixedly connect adjacent main longitudinal bars 5 and vertical portions 41, and another being that the tie bars 8 fixedly connect adjacent additional vertical longitudinal bars 7 and fixedly connect adjacent main longitudinal bars 5 and vertical portions 41. The tie bars 8 connecting adjacent additional vertical longitudinal bars 7 are staggered with the tie bars 8 connecting adjacent main longitudinal bars 5 and vertical portions 41 and are perpendicular to each other.
[0046] The tie bars 8 make the steel bar framework 3 form a more integrated and synergistic steel bar network, thereby improving the overall resistance and stability of the connection structure.
[0047] Example 3
[0048] On the basis of Example 1, with reference to Figure 5 , 6As shown, the reinforcing cage 3 also includes several additional U-shaped stirrups 9, which are evenly distributed along the direction of the main reinforcement 11 of the secondary beam 1. Each additional U-shaped stirrup 9 includes a horizontal bar 91 and a vertical bar 92 fixedly connected to both ends of the horizontal bar 91, with the vertical bar 92 perpendicular to the horizontal bar 91. The main reinforcement 11 of the secondary beam 1 is located within the additional U-shaped stirrups 9 and is fixedly connected to them; one end of the vertical bar 92 extends into the main beam 2 and is fixedly connected to the main beam reinforcement.
[0049] Example 4
[0050] Based on Example 3, referring to Figure 7 , 8 As shown, the end of the vertical bar 92 away from the horizontal bar 91 is fixed with a hook 921. The hook 921 is used to increase the anchoring force of the additional U-shaped stirrup 9, thereby improving the reliability and stability of the connection.
[0051] The reinforcing bar 4 also includes a secondary bar 43, which is vertically fixed to the vertical part 41 and extends horizontally into the main beam 2. One end of the secondary bar 43 is fixedly connected to a hook 921. When under stress, the hook 921 can better transfer the load to the main beam 2, improving the stability of the connection node.
[0052] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A connection structure between the secondary beam reinforcement and the main beam when the secondary beam is reversed, wherein the secondary beam reinforcement includes a plurality of main bars (11) and stirrups (12), wherein the plurality of said main bars (11) are rectangularly distributed and extend into the main beam (2), characterized in that: The steel reinforcement cage (3) includes reinforcing bars (4), which include a vertical part (41) and a bent part (42). One end of the vertical part (41) is fixedly connected to the main reinforcement (11), and the other end extends into the main beam (2). The bent part (42) is fixedly connected to the end of the vertical part (41) that extends into the main beam (2) and extends into the main beam (2) in the direction of the secondary beam (1).
2. The connection structure between the secondary beam reinforcement and the main beam when the secondary beam is reversed according to claim 1, characterized in that: The steel reinforcement cage (3) also includes several main longitudinal bars (5) and additional stirrups (6). The main longitudinal bars (5) are parallel to the vertical part (41) of the reinforcing bars (4). One end of the main longitudinal bars (5) is fixedly connected to the main beam reinforcement, and the other end extends vertically into the secondary beam reinforcement. The additional stirrups (6) surround the main longitudinal bars (5) and the reinforcing bars (4) and are fixedly connected to the main bars (11) and the vertical part (41) of the reinforcing bars (4).
3. The connection structure between the secondary beam reinforcement and the main beam in a reverse-flow manner as described in claim 2, characterized in that: Both ends of the main longitudinal rib (5) are fixedly connected with folded edges (51) extending toward the vertical part (41).
4. The connection structure between the secondary beam reinforcement and the main beam when the secondary beam is reversed according to claim 2, characterized in that: The steel reinforcement cage (3) also includes several additional vertical longitudinal bars (7) parallel to the main longitudinal bars (5); the additional vertical longitudinal bars (7) are located between the vertical part (41) of the main longitudinal bars (5) and the reinforcing bars (4), one end of the additional vertical longitudinal bars (7) is fixedly connected to the main beam reinforcement, and the other end is fixedly connected to the additional stirrups (6).
5. The connection structure between the secondary beam reinforcement and the main beam in the case of reverse rotation on a secondary beam according to claim 4, characterized in that: The steel reinforcement cage (3) also includes tie bars (8), which are fixedly connected to adjacent additional vertical longitudinal bars (7) and / or fixedly connected to adjacent main longitudinal bars (5) and vertical parts (41).
6. The connection structure between the secondary beam reinforcement and the main beam in a reverse-flow manner according to claim 1, characterized in that: The steel reinforcement cage (3) also includes several additional U-shaped stirrups (9), which include horizontal bars (91) and vertical bars (92) that fix and connect the two ends of the horizontal bars (91). The additional U-shaped stirrups (9) are distributed at equal intervals along the direction of the main bars (11) of the secondary beam (1). The main bars (11) of the secondary beam (1) are located inside the additional U-shaped stirrups (9) and are fixedly connected to the additional U-shaped stirrups (9). One end of the vertical bar (92) extends into the main beam (2) and is fixedly connected to the main beam reinforcement.
7. The connection structure between the secondary beam reinforcement and the main beam in a reverse-flow manner as described in claim 6, characterized in that: The vertical bar (92) is fixed with a hook (921) at the end away from the horizontal bar (91).
8. The connection structure between the secondary beam reinforcement and the main beam in the case of reverse rotation on a secondary beam according to claim 7, characterized in that: The reinforcing bar (4) also includes a secondary bar (43), which is fixed vertically to the vertical part (41); one end of the secondary bar (43) is fixedly connected to the hook (921).