Composite connecting beam column structure, structure and construction method
By using a composite beam-column connection structure, and combining the longitudinal reinforcement of beam anchors with that of non-anchors for anchorage, along with the addition of reinforcing bars, the problem of concrete quality and strength caused by excessive reinforcement in the beam-column joint area is solved, thereby improving the safety and load-bearing capacity of the joint area.
Patent Information
- Application Number
- CN202411164474.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-23
- Publication Date
- 2026-03-03
AI Technical Summary
In existing technologies, excessive reinforcement in the beam-column joint area makes it difficult to guarantee the quality and strength of concrete pouring, and the pull-out of the anchor plate reinforcement group causes brittle failure in the joint area, affecting structural safety.
A composite beam-column connection structure is adopted. By combining the longitudinal reinforcement of the beam anchorage and the non-anchorage longitudinal reinforcement of the reinforced concrete beam with the reinforced concrete column, and by using the fixed connection of the beam anchorage longitudinal reinforcement and anchorage, combined with the setting of reinforcing bars, multi-point anchorage is formed, which avoids the pull-out of the steel bars and enhances the concrete quality and strength of the joint area.
It effectively avoids brittle failure in the joint area, increases the spacing of steel bars in the joint area, improves the quality and strength of concrete, enhances the load-bearing capacity and ductility of the joint, and prevents or reduces punching shear failure and local pressure failure.
Smart Images
Figure CN121593541A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of structural engineering technology, and specifically relates to a composite beam-column structure, construction method, and construction method. Background Technology
[0002] When connecting beams and columns, the longitudinal reinforcement of the beam is usually directly anchored into the reinforced concrete column. However, this method often results in excessive reinforcement at the beam-column joint with narrow spacing, making it difficult to guarantee the quality and strength of the concrete pouring. To solve this problem, some projects use anchor plates to anchor the beam reinforcement within the reinforced concrete column. This method can reduce the anchorage length of the longitudinal reinforcement of the beam within the column. However, in practice, there have been instances of reinforcement pull-out, causing brittle failure in the joint area and seriously affecting structural safety. Summary of the Invention
[0003] The purpose of this invention is to provide a composite beam-column connection structure, construction method, and solution to the problem of pull-out of the anchor plate reinforcement group in the beam-column joint area.
[0004] To achieve the above objectives, the present invention adopts the following technical solution.
[0005] A composite beam-column connection structure includes a reinforced concrete beam and a reinforced concrete column, wherein the reinforced concrete beam and the reinforced concrete column are connected; the reinforced concrete beam includes beam concrete, beam longitudinal reinforcement, beam stirrups, and anchorages; the beam longitudinal reinforcement includes beam anchorage longitudinal reinforcement and beam non-anchorage longitudinal reinforcement; the reinforced concrete column includes column concrete, column longitudinal reinforcement, and column stirrups; the beam anchorage longitudinal reinforcement is inserted into the gap between the column longitudinal reinforcement and the column stirrups; the beam anchorage longitudinal reinforcement and the anchorages are fixedly connected.
[0006] Preferably, the reinforced concrete beams are located on both sides of the reinforced concrete columns, corresponding to each other; the non-anchored longitudinal reinforcement of the beams penetrates through the reinforced concrete columns; the anchors are anchor plates, reinforcing bars, structural steel, or steel plates; and the anchors are located at the ends of the longitudinal reinforcement of the anchors.
[0007] Preferably, the reinforced concrete beam is located on one side of the reinforced concrete column; the non-anchor longitudinal reinforcement of the beam extends into the reinforced concrete column; and the anchor is located at the end of the anchor longitudinal reinforcement.
[0008] Preferably, the length of the longitudinal reinforcement of the anchor inserted into the reinforced concrete column is not less than 5 times the diameter of the reinforcement.
[0009] Preferably, there are reinforcing bars between the anchor and the column longitudinal reinforcement.
[0010] Preferably, the anchor longitudinal bars have different lengths, and reinforcing bars are arranged between the anchor longitudinal bars of the same length and the column longitudinal bars in each batch.
[0011] Preferably, the non-anchor longitudinal bars and the anchor longitudinal bars are arranged at intervals.
[0012] Preferably, the longitudinal reinforcement at the corner of the reinforced concrete beam is non-anchored longitudinal reinforcement.
[0013] Preferably, steel components are present within the reinforced concrete beams and / or reinforced concrete columns.
[0014] A composite beam-column structure, wherein reinforced concrete beams, reinforced concrete columns and floor slabs are connected into a single structure via the nodes described in claim 1.
[0015] A construction method for a composite beam-column connection structure, the specific construction steps are as follows:
[0016] Step 1: Prepare beam longitudinal reinforcement and beam stirrups, column longitudinal reinforcement and column stirrups, beam concrete, column concrete, and anchorages; process beam anchorage longitudinal reinforcement, beam non-anchorage longitudinal reinforcement and beam stirrups, column longitudinal reinforcement and column stirrups to the predetermined length and shape; fix the beam anchorage longitudinal reinforcement to the anchorages.
[0017] Step 2: Tie the column longitudinal reinforcement and column stirrups;
[0018] Step 3: Erect column formwork;
[0019] Step 4: According to the design requirements, pour the column concrete into the column formwork and cure the column concrete to the predetermined strength.
[0020] Step 5: Erect the beam formwork;
[0021] Step 6: Tie the longitudinal reinforcement of the beam anchorage, the longitudinal reinforcement of the beam non-anchorage, and the beam stirrups to form the beam reinforcement cage; insert the longitudinal reinforcement of the beam anchorage and the longitudinal reinforcement of the beam non-anchorage into the gap between the column longitudinal reinforcement and the column stirrups;
[0022] Step 7: Pour concrete for the beam-column joints according to the design requirements and cure to the predetermined strength.
[0023] Compared with the prior art, the present invention has the following features and beneficial effects.
[0024] 1. In this invention, two anchorage methods are used for beam anchorage: longitudinal reinforcement with anchorage and longitudinal reinforcement without anchorage. These methods work together to avoid brittle failure in the joint area, reduce the amount of steel reinforcement in the joint area, increase the spacing of steel reinforcement in the joint area, and improve the quality and strength of concrete.
[0025] 2. In this invention, reinforcing bars are provided to constrain the deformation of concrete in the joint area, increase the ductility of the joint area, and prevent or reduce punching shear failure and local pressure failure.
[0026] 3. The present invention uses longitudinal reinforcement bars of different lengths to avoid or reduce the concentration of anchorage stress.
[0027] 4. The steel components in this invention further reduce the anchorage of the anchor plate group and improve the load-bearing capacity and ductility of the node. Attached Figure Description
[0028] The present invention will now be described in further detail with reference to the accompanying drawings.
[0029] Figure 1 Top view of the connection between a reinforced concrete column and a reinforced concrete beam. Figure 1 .
[0030] Figure 2 Elevation diagram of the connection between reinforced concrete columns and reinforced concrete beams Figure 1 .
[0031] Figure 3 Top view of the connection between a reinforced concrete column and a reinforced concrete beam. Figure 2 .
[0032] Figure 4 Elevation diagram of the connection between reinforced concrete columns and reinforced concrete beams Figure 2 .
[0033] Figure 5 Top view of the connection between a reinforced concrete column and a reinforced concrete beam. Figure 3 .
[0034] Figure 6 Elevation diagram of the connection between reinforced concrete columns and reinforced concrete beams Figure 3 .
[0035] Figure 7 Top view of the connection between a reinforced concrete column and a reinforced concrete beam. Figure 4 .
[0036] Figure reference numerals: A - reinforced concrete beam, B - reinforced concrete column, 1 - beam concrete, 2 - beam longitudinal reinforcement, 2.1 - beam anchor longitudinal reinforcement, 2.2 - beam non-anchor longitudinal reinforcement, 3 - beam stirrups, 4 - anchorage, 5 - column concrete, 6 - column longitudinal reinforcement, 7 - column stirrups, 8 - reinforcing bars, 9 - steel components.
[0037] To better understand the purpose, technical solution, and function of this invention, the invention will be described in further detail below with reference to the accompanying drawings. Here, illustrative embodiments and their descriptions are used to explain the invention, but are not intended to limit the invention.
[0038] In the description of this invention, it should be understood that the terms "comprising / including," "consisting of," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a product, apparatus, process, or method that comprises a list of elements includes not only those elements but may also include, where necessary, other elements not expressly listed, or elements inherent to such a product, apparatus, process, or method. Without further limitation, an element defined by the phrase "comprising / including…" or "consisting of…" does not exclude the presence of additional identical elements in the product, apparatus, process, or method that includes said element.
[0039] In this invention, unless otherwise explicitly specified and limited, the term "fixed connection" should be interpreted broadly, for example, it can refer to a sleeve connection, an lap joint, a weld, a bolted connection, or a combination of the above connections; the terms "installation," "connection," and "linking" should also be interpreted broadly, for example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components; the term "continuous reinforcing bar" refers to a reinforcing bar that is continuous without breakage, or a reinforcing bar that is broken but with a fixed connection between the broken reinforcing bars. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0040] It should also be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device, component or structure referred to must have a specific orientation, be constructed or operated in a specific orientation, and should not be construed as a limitation of the present invention.
[0041] The implementation of the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments.
[0042] like Figure 1 and Figure 2 As shown, a composite beam-column connection structure includes a reinforced concrete beam A and a reinforced concrete column B. The reinforced concrete beam A is connected to the reinforced concrete column B. The reinforced concrete beam A includes beam concrete 1, beam longitudinal reinforcement 2, beam stirrups 3, and anchorages 4. The beam longitudinal reinforcement 2 includes beam anchor longitudinal reinforcement 2.1 and beam non-anchor longitudinal reinforcement 2.2. The reinforced concrete column B includes column concrete 5, column longitudinal reinforcement 6, and column stirrups 7. The beam anchor longitudinal reinforcement 2.1 is inserted into the gap between the column longitudinal reinforcement 6 and the column stirrups 7. The beam anchor longitudinal reinforcement 2.1 and the anchorages 4 are fixedly connected.
[0043] The longitudinal reinforcement of the beam anchorage 2.1 is anchored into the reinforced concrete column, and the anchorage force is provided by the local pressure of the concrete near the anchorage and the shear force distributed along the longitudinal reinforcement of the anchorage. The non-anchorage longitudinal reinforcement 2.2 of the beam is also anchored into the reinforced concrete column, and the anchorage force is provided by the shear force distributed along the non-anchorage longitudinal reinforcement. The two form a composite anchorage force, which avoids or reduces the collective pull-out of the anchorage reinforcement at the node and the occurrence of brittle failure.
[0044] In practice, reinforced concrete beam A is located on both sides of reinforced concrete column B, with corresponding longitudinal reinforcement bars 2.2 penetrating through column B. Anchorages 4 are located at the ends of anchorage longitudinal reinforcement bars 2.1. The longitudinal reinforcement bars 2.2 penetrating through column B share the load with the anchorage reinforcement, resisting bending moment and shear force. The anchorage longitudinal reinforcement is interrupted within the column, reducing the amount of steel reinforcement in the reinforced concrete column and improving the quality and strength of the concrete pouring.
[0045] In practice, reinforced concrete beam A is located on one side of reinforced concrete column B. The non-anchored longitudinal reinforcement 2.2 of the beam extends into reinforced concrete column B, and anchorage 4 is located at the end of the anchored longitudinal reinforcement 2.1. Function: Both the anchored and non-anchored longitudinal reinforcements are anchored within the reinforced concrete column and share the load.
[0046] In specific implementation, anchor 4 is an anchor plate, reinforcing bar, structural steel, or steel plate. The thickness of the anchor plate or steel plate is not less than 0.35 times the plate thickness, the diameter of the short reinforcing bar is not less than 0.2 times the diameter of the longitudinal reinforcement of the beam anchor, and the length is not less than 1.5 times the diameter of the longitudinal reinforcement of the beam anchor. The longitudinal reinforcement 6 and transverse reinforcement 7 of the wall include the wall body reinforcement and / or the reinforcement of the wall edge members. Function: The anchor has a certain rigidity and effectively transmits the anchoring force.
[0047] In practice, the length of the longitudinal reinforcement 2.1 inserted into the reinforced concrete column B of the anchor should not be less than 5 times the diameter of the reinforcement. Function: To prevent the anchor reinforcement from being too shortly embedded in the reinforced concrete column, which could cause damage.
[0048] In practice, a reinforcing bar 8 is placed between the anchor 4 and the column longitudinal reinforcement 6. The reinforcing bar is a steel mesh or vertically spaced steel bars, with a spacing of 25mm to 350mm between the mesh and the bars; the diameter of the reinforcing bar should not be less than 8mm. Its function is to prevent localized pressure failure of the joint concrete and improve the ductility of the joint.
[0049] In practice, the lengths of the anchor longitudinal bars 2.1 vary, and reinforcing bars 8 are arranged between the anchor longitudinal bars 2.1 of the same length and the column longitudinal bars 6 in each batch. Function: To form multiple failure surfaces and improve the ductility of the joint.
[0050] In practice, the non-anchor longitudinal reinforcement 2.2 and the anchor longitudinal reinforcement 2.1 are arranged at intervals. This serves to further ensure that both work together to bear the load, reducing localized pressure failure.
[0051] In practice, the non-anchor longitudinal reinforcement 2.2 is arranged vertically corresponding to the anchor longitudinal reinforcement 2.1. Function: To increase the spacing between the reinforcement bars, facilitating concrete pouring.
[0052] In practical implementation, the longitudinal reinforcement 2 at corner A of the reinforced concrete beam is a non-anchored longitudinal reinforcement 2.2. Its function is to address the poor confinement performance of the concrete at the corner of the anchored reinforcement. By using the non-anchored longitudinal reinforcement, a longer force transmission path is formed, achieving the anchoring effect and preventing localized pressure failure caused by the anchored reinforcement.
[0053] In practice, steel members 9 are present within reinforced concrete beam A and / or reinforced concrete column B. These steel members include structural steel sections or welded steel components. Their function is to further improve the ductility of the joint, reduce the collective effect of anchorages, and decrease the required anchoring force.
[0054] In practice, reinforced concrete beams, reinforced concrete columns, and floor slabs are connected into a structure through the nodes described in claim 1.
[0055] A construction method for a composite beam-column connection structure, the specific construction steps are as follows:
[0056] Step 1: Prepare beam longitudinal reinforcement 2 and beam stirrups 3, column longitudinal reinforcement 6 and column stirrups 7, beam concrete 1, column concrete 5, and anchorage 4; process beam anchorage longitudinal reinforcement 2.1, beam non-anchorage longitudinal reinforcement 2.2, beam stirrups 3, column longitudinal reinforcement 6 and column stirrups 7 to the predetermined length and shape; fix beam anchorage longitudinal reinforcement 2.1 to anchorage 4.
[0057] Step 2: Tie the column longitudinal reinforcement 6 and column stirrups 7;
[0058] Step 3: Erect column formwork;
[0059] Step 4: According to the design requirements, pour 5 cubic meters of column concrete into the column formwork and cure the column concrete to the predetermined strength.
[0060] Step 5: Erect the beam formwork;
[0061] Step 6: Tie the longitudinal reinforcement bars 2.1 of the beam anchorage, the longitudinal reinforcement bars 2.2 of the beam non-anchorage, and the stirrups 3 of the beam to form the beam reinforcement cage; the longitudinal reinforcement bars 2.1 of the beam anchorage and the longitudinal reinforcement bars 2.2 of the beam non-anchorage are inserted into the gap between the longitudinal reinforcement bars 6 and the stirrups 7 of the column;
[0062] Step 7: Pour concrete for the beam-column joints according to the design requirements and cure to the predetermined strength.
[0063] In practice, the beam concrete can be poured as needed and cured to the predetermined strength.
[0064] The specific embodiments are as described, but the scope of protection of the present invention is not limited thereto. Any modifications, equivalent substitutions, and improvements made by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.
Claims
1. A composite beam-column connection structure, characterized in that: The structure includes a reinforced concrete beam (A) and a reinforced concrete column (B), which are connected to each other. The reinforced concrete beam (A) includes beam concrete (1), longitudinal reinforcement (2), stirrups (3), and anchorages (4). The longitudinal reinforcement (2) includes anchorages (2.1) and non-anchorages (2.2). The reinforced concrete column (B) includes column concrete (5), longitudinal reinforcement (6), and stirrups (7). The anchorages (2.1) are inserted into the gap between the longitudinal reinforcements (6) and the stirrups (7). The anchorages (2.1) and anchorages (4) are fixedly connected.
2. The composite beam-column connection structure according to claim 1, characterized in that: The reinforced concrete beam (A) is located on both sides of the reinforced concrete column (B) and is correspondingly arranged; the non-anchor longitudinal reinforcement (2.2) of the beam penetrates the reinforced concrete column (B); the anchor (4) is located at the end of the anchor longitudinal reinforcement (2.1).
3. The composite beam-column connection structure according to claim 1, characterized in that: The reinforced concrete beam (A) is located on one side of the reinforced concrete column (B); the non-anchor longitudinal reinforcement (2.2) of the beam extends into the reinforced concrete column (B); the anchor (4) is located at the end of the anchor longitudinal reinforcement (2.1).
4. The composite beam-column connection structure according to claim 1, characterized in that: The length of the longitudinal reinforcement (2.1) of the anchor is inserted into the reinforced concrete column (B) by a length not less than 5 times the diameter of the reinforcement.
5. The composite beam-column connection structure according to claim 1, characterized in that: There is a reinforcing bar (8) between the anchor (4) and the column longitudinal reinforcement (6).
6. The composite beam-column connection structure according to claim 1, characterized in that: The anchor longitudinal bars (2.1) have different lengths, and reinforcing bars (8) are arranged between the anchor longitudinal bars (2.1) of the same length in each batch and the column longitudinal bars (6).
7. The composite beam-column connection structure according to claim 1, characterized in that: The non-anchor longitudinal bars (2.2) and the anchor longitudinal bars (2.1) are arranged alternately.
8. The composite beam-column connection structure according to claim 1, characterized in that: The longitudinal reinforcement (2) at the corner of the reinforced concrete beam (A) is a non-anchored longitudinal reinforcement (2.2).
9. The composite beam-column connection structure according to claim 1, characterized in that: There are steel components (9) inside the reinforced concrete beam (A) and / or the reinforced concrete column (B).
10. A composite beam-column connection structure, characterized in that: The reinforced concrete beams, reinforced concrete columns, and floor slabs are connected into a structure through the nodes described in claim 1.
11. A construction method for a composite beam-column connection structure, characterized in that: The specific construction steps are as follows: Step 1: Prepare beam longitudinal reinforcement (2) and beam stirrups (3), column longitudinal reinforcement (6) and column stirrups (7), beam concrete (1), column concrete (5), and anchorages (4); process beam anchorage longitudinal reinforcement (2.1), beam non-anchorage longitudinal reinforcement (2.2), beam stirrups (3), column longitudinal reinforcement (6), and column stirrups (7) to the predetermined length and shape; fix the beam anchorage longitudinal reinforcement (2.1) to the anchorages (4); Step 2: Tie the column longitudinal reinforcement (6) and column stirrups (7); Step 3: Erect column formwork; Step 4: According to the design requirements, pour column concrete (5) into the column formwork and cure the column concrete to the predetermined strength; Step 5: Erect the beam formwork; Step 6: Tie the longitudinal reinforcement bars (2.1) of the beam anchorage, the longitudinal reinforcement bars (2.2) of the beam non-anchorage, and the stirrups (3) of the beam to form a beam reinforcement cage; the longitudinal reinforcement bars (2.1) of the beam anchorage and the longitudinal reinforcement bars (2.2) of the beam non-anchorage are inserted into the gap between the longitudinal reinforcement bars (6) of the column and the stirrups (7) of the column; Step 7: Pour concrete for the beam-column joints according to the design requirements and cure to the predetermined strength.