Reinforced beam wall joint, structure and construction method
By using a hybrid anchoring method combining anchor longitudinal reinforcement and non-anchor longitudinal reinforcement, along with strengthening components and steel frame structures, the problem of brittle failure at beam-wall connection nodes was solved, thereby improving seismic safety and load-bearing capacity.
Patent Information
- Application Number
- CN202411172234.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-26
- Publication Date
- 2026-03-03
AI Technical Summary
In existing technologies, the pull-out of the anchor plate reinforcement at beam-wall connection nodes leads to brittle failure, posing a seismic safety hazard.
A hybrid anchoring method using longitudinal reinforcement with and without anchors is adopted, combined with reinforcing members and steel frame structure, to form a composite anchoring force, avoid concentrated anchoring, and enhance the quality and strength of concrete pouring in the joint area.
It effectively avoids or reduces brittle failure in the joint area, improves the quality and strength of concrete pouring, increases the ductility of the joint, prevents punching shear and local pressure failure, and enhances the bearing capacity.
Smart Images
Figure CN121593547A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of structural engineering technology, and specifically relates to a reinforced beam-wall joint, structure, and construction method. Background Technology
[0002] To achieve seismic safety, a "strong node, weak member" principle is typically required, making the safety and reliability of beam-wall connections crucial. While beam longitudinal reinforcement is usually anchored directly into the wall, this approach presents challenges due to the dense reinforcement in the joint area, making it difficult to guarantee the quality and strength of the concrete pouring. Some projects utilize anchor plates, where the anchor plate is threadedly connected to the beam's longitudinal reinforcement as a single unit, anchored within the wall. This method shortens the reinforcement anchorage length, but in practice, instances of anchor plate reinforcement pull-out have occurred, leading to brittle failure and posing a significant threat to seismic safety. Summary of the Invention
[0003] The purpose of this invention is to provide a reinforced beam-wall joint, structure, and construction method to solve the problem of brittle failure caused by the pull-out of the anchor plate reinforcement in the joint area.
[0004] To achieve the above objectives, the present invention adopts the following technical solution.
[0005] A reinforced beam-wall joint includes a reinforced concrete beam and a reinforced concrete wall, wherein the reinforced concrete beam is connected to the reinforced concrete wall; the reinforced concrete beam includes beam concrete, longitudinal reinforcement bars, transverse reinforcement bars, and anchorages; the longitudinal reinforcement bars include longitudinal bars of the beam anchorages and longitudinal bars of the beam non-anchorages; the reinforced concrete wall includes wall concrete, longitudinal reinforcement bars of the wall, and transverse reinforcement bars of the wall; the longitudinal reinforcement bars of the beam are inserted into the gaps between the longitudinal reinforcement bars and the transverse reinforcement bars of the wall.
[0006] Preferably, the longitudinal reinforcement of the beam anchor and the anchor are fixedly connected; the anchor is an anchor plate, a reinforcing bar, a section steel or a steel plate; the anchor is located at the end of the longitudinal reinforcement of the anchor.
[0007] Preferably, the ends of the anchor longitudinal bars and the ends of the non-anchor longitudinal bars are not on the same plane.
[0008] Preferably, there is a reinforcement between the anchor and the wall edge.
[0009] Preferably, the longitudinal bars of the anchors are of different lengths, and reinforcement members are arranged between the longitudinal bars of the anchors of the same length in each batch and the edge of the wall.
[0010] Preferably, the non-anchor longitudinal bars and the anchor longitudinal bars are arranged at intervals.
[0011] Preferably, the longitudinal reinforcement at the corner of the reinforced concrete beam is non-anchored longitudinal reinforcement.
[0012] Preferably, the reinforced concrete beams and / or reinforced concrete walls contain steel reinforcement.
[0013] A reinforced beam-wall structure, wherein reinforced concrete beams, reinforced concrete walls and floor slabs are connected as a single structure via the nodes described in claim 1.
[0014] A construction method for reinforcing beam-wall joints, the specific construction steps are as follows:
[0015] Step 1: Prepare longitudinal and transverse reinforcement bars for beams, longitudinal and transverse reinforcement bars for walls, beam concrete, wall concrete, and anchorages; process anchorage longitudinal bars, non-anchorage longitudinal bars, beam transverse reinforcement bars, and wall longitudinal and transverse reinforcement bars to the predetermined length and shape; fix the beam anchorage longitudinal bars to the anchorages.
[0016] Step 2: Tie the longitudinal and transverse reinforcing bars of the wall;
[0017] Step 3: Erect the wall formwork;
[0018] Step 4: According to the design requirements, pour the wall concrete into the wall formwork and cure the wall concrete to the predetermined strength.
[0019] Step 5: Erect the beam formwork;
[0020] Step 6: Tie the longitudinal reinforcement of the beam anchorage, the longitudinal reinforcement of the non-anchorage, and the transverse reinforcement of the beam to form the beam reinforcement cage; the longitudinal reinforcement of the beam anchorage is inserted into the gap between the longitudinal reinforcement and the transverse reinforcement of the wall.
[0021] Step 7: Pour the concrete for the beam-wall joints according to the design requirements and cure it to the predetermined strength.
[0022] Compared with the prior art, the present invention has the following features and beneficial effects.
[0023] 1. The present invention adopts a mixed anchorage method of anchor longitudinal bars and non-anchor longitudinal bars to avoid or reduce concentrated anchorage, thereby avoiding brittle failure in the joint area; and can also reduce the reinforcement in the joint area, improving the quality and strength of concrete pouring.
[0024] 2. In this invention, reinforcing members are provided at the ends of the longitudinal reinforcement bars of the anchor and at the edge of the wall to constrain the deformation of the concrete in the joint area, increase ductility, and prevent or reduce punching shear failure and local pressure failure.
[0025] 3. The present invention uses longitudinal reinforcement bars of different lengths to avoid or reduce the concentration of anchorage stress.
[0026] 4. The steel frame in this invention further reduces the anchorage of the anchor plate group and improves the load-bearing capacity and ductility of the node. Attached Figure Description
[0027] The present invention will now be described in further detail with reference to the accompanying drawings.
[0028] Figure 1Top view of the connection between the reinforced concrete wall and the reinforced concrete beam. Figure 1 .
[0029] Figure 2 Elevation diagram of the connection between reinforced concrete wall and reinforced concrete beam. Figure 1 .
[0030] Figure 3 Top view of the connection between the reinforced concrete wall and the reinforced concrete beam. Figure 2 .
[0031] Figure 4 Elevation diagram of the connection between reinforced concrete wall and reinforced concrete beam. Figure 2 .
[0032] Figure 5 Top view of the connection between the reinforced concrete wall and the reinforced concrete beam. Figure 3 .
[0033] Figure reference numerals: A - reinforced concrete beam, B - reinforced concrete wall, 1 - beam concrete, 2 - longitudinal reinforcement of beam, 2.1 - longitudinal reinforcement of beam anchorage, 2.2 - longitudinal reinforcement of beam non-anchorage, 3 - transverse reinforcement of beam, 4 - anchorage, 5 - wall concrete, 6 - longitudinal reinforcement of wall, 7 - transverse reinforcement of wall, 8 - reinforcement, 9 - steel skeleton.
[0034] 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.
[0035] 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.
[0036] 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.
[0037] 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.
[0038] The implementation of the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments.
[0039] like Figure 1 and Figure 2 As shown, a reinforced beam-wall joint includes a reinforced concrete beam A and a reinforced concrete wall B, connected together. The reinforced concrete beam A includes beam concrete 1, longitudinal reinforcement 2, transverse reinforcement 3, and anchorages 4. The longitudinal reinforcement 2 includes anchorage reinforcement 2.1 and non-anchorage reinforcement 2.2. The reinforced concrete wall B includes wall concrete 5, longitudinal reinforcement 6, and transverse reinforcement 7. The beam longitudinal reinforcement 2 is inserted into the gap between the wall longitudinal reinforcement 6 and the wall transverse reinforcement 7. The beam anchorage reinforcement 2.1 is anchored into the shear wall, providing anchorage force through localized concrete pressure near the anchorage and shear force distributed along the anchorage reinforcement. The beam non-anchorage reinforcement 2.2 is also anchored into the shear wall, providing anchorage force through shear force distributed along the non-anchorage reinforcement. The two form a composite anchorage force, avoiding or reducing the risk of brittle failure due to collective pull-out of the anchorage reinforcement at the joint.
[0040] In practical implementation, the longitudinal reinforcement 2.1 of the beam anchorage and the anchor 4 are fixedly connected by threaded connection or welding. Anchor 4 is an anchor plate, reinforcing bar, structural steel, or steel plate, located at the end of the longitudinal reinforcement 2.1. 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 anchorage, and the length is not less than 1.5 times the diameter of the longitudinal reinforcement of the beam anchorage. 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.
[0041] In practical implementation, the length of the anchor longitudinal reinforcement 2.1 inserted into the reinforced concrete wall B shall not be less than 5 times the diameter of the reinforcement bar, and the length of the non-anchor longitudinal reinforcement 2.2 inserted into the reinforced concrete wall B shall not be less than 10 times the diameter of the reinforcement bar. The total length of the non-anchor reinforcement inserted into the concrete shear wall shall not be less than the reinforcement anchorage length. Function: To provide more effective anchorage force.
[0042] In practice, the ends of the anchor longitudinal reinforcement 2.1 and the ends of the non-anchor longitudinal reinforcement 2.2 are not on the same plane. Function: This ensures that the failure surfaces of the joint concrete are not on the same plane.
[0043] In specific implementation, such as Figure 3 and Figure 4 As shown, there is a reinforcing member 8 between the anchor 4 and the wall edge. The reinforcing member is a steel mesh or spaced vertically arranged steel bars. The spacing of the steel mesh or the spacing of the spaced vertically arranged steel bars is 20mm to 400mm, and the diameter of the steel bars should not be less than 6mm. Function: To prevent localized pressure failure of the joint concrete and improve the ductility of the joint.
[0044] In specific implementation, such as Figure 5 As shown, the lengths of the anchor longitudinal bars 2.1 vary, and reinforcing members 8 are arranged between the anchor longitudinal bars 2.1 of the same length in each batch and the wall edge. Function: To form multiple failure surfaces and improve the ductility of the joint.
[0045] In practice, the non-anchor longitudinal reinforcement 2.2 and the anchor longitudinal reinforcement 2.1 are arranged alternately. Function: To further reduce localized pressure failure.
[0046] 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 where the anchor reinforcement is located. 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 anchor reinforcement.
[0047] In practical implementation, steel reinforcement 9 is present within reinforced concrete beam A and / or reinforced concrete wall B. Its function is to further improve the ductility of the joint, reduce the collective effect of anchorages, and reduce the required anchoring force.
[0048] A reinforced beam-wall structure, wherein reinforced concrete beams, reinforced concrete walls, and floor slabs are connected as a single structure via the nodes described in claim 1. Function: To form a reinforced structural system.
[0049] A construction method for reinforcing beam-wall joints, the specific construction steps are as follows:
[0050] Step 1: Prepare beam longitudinal reinforcement 2 and beam transverse reinforcement 3, wall longitudinal reinforcement 6 and wall transverse reinforcement 7, beam concrete 1, wall concrete 5, and anchorage 4; process anchorage longitudinal reinforcement 2.1, non-anchorage longitudinal reinforcement 2.2, beam transverse reinforcement 3, wall longitudinal reinforcement 6, and wall transverse reinforcement 7 to the predetermined length and shape; fix the beam anchorage longitudinal reinforcement 2.1 to the anchorage 4.
[0051] Step 2: Tie the longitudinal reinforcement 6 and the transverse reinforcement 7 of the wall;
[0052] Step 3: Erect the wall formwork;
[0053] Step 4: According to the design requirements, pour 5 pieces of wall concrete into the wall formwork and cure the wall concrete to the predetermined strength.
[0054] Step 5: Erect the beam formwork;
[0055] Step 6: Tie the longitudinal reinforcement 2.1 of the beam anchorage, the longitudinal reinforcement 2.2 of the non-anchorage beam, and the transverse reinforcement 3 of the beam to form the beam reinforcement cage; insert the longitudinal reinforcement 2.1 and longitudinal reinforcement 2.2 of the beam anchorage into the gap between the longitudinal reinforcement 6 and the transverse reinforcement 7 of the wall;
[0056] Step 7: Pour the concrete for the beam-wall joints according to the design requirements and cure it to the predetermined strength.
[0057] In practice, the beam concrete can be poured as needed and cured to the predetermined strength.
[0058] 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 reinforced beam-wall joint, characterized in that: The structure includes a reinforced concrete beam (A) and a reinforced concrete wall (B), wherein the reinforced concrete beam (A) is connected to the reinforced concrete wall (B); the reinforced concrete beam (A) includes beam concrete (1), longitudinal beam reinforcement (2), transverse beam reinforcement (3), and anchorages (4); the longitudinal beam reinforcement (2) includes longitudinal reinforcement of beam anchorages (2.1) and longitudinal reinforcement of beam non-anchorages (2.2); the reinforced concrete wall (B) includes wall concrete (5), longitudinal wall reinforcement (6), and transverse wall reinforcement (7); the longitudinal beam reinforcement (2) is inserted into the gap between the longitudinal wall reinforcement (6) and the transverse wall reinforcement (7).
2. The reinforced beam-wall joint according to claim 1, characterized in that: The longitudinal reinforcement (2.1) of the beam anchor and the anchor (4) are fixedly connected; the anchor (4) is an anchor plate, a reinforcing bar, a section steel or a steel plate; the anchor (4) is located at the end of the longitudinal reinforcement (2.1) of the anchor.
3. The reinforced beam-wall joint according to claim 1, characterized in that: The ends of the anchor longitudinal bars (2.1) and the ends of the non-anchor longitudinal bars (2.2) are not on the same plane.
4. The reinforced beam-wall joint according to claim 1, characterized in that: There is a reinforcing member (8) between the anchor (4) and the wall edge.
5. The reinforced beam-wall joint according to claim 1, characterized in that: The anchor longitudinal bars (2.1) have different lengths, and reinforcement members (8) are arranged between the anchor longitudinal bars (2.1) of the same length in each batch and the edge of the wall.
6. The reinforced beam-wall joint according to claim 1, characterized in that: The non-anchor longitudinal bars (2.2) and the anchor longitudinal bars (2.1) are arranged alternately.
7. The reinforced beam-wall joint 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).
8. The reinforced beam-wall joint according to claim 1, characterized in that: The reinforced concrete beam (A) and / or the reinforced concrete wall (B) contain steel reinforcement (9).
9. A reinforced beam-wall structure, characterized in that: The reinforced concrete beams, reinforced concrete walls, and floor slabs are connected into a structure through the nodes described in claim 1.
10. A construction method for reinforcing beam-wall joints, characterized in that: The specific construction steps are as follows: Step 1: Prepare the longitudinal reinforcement (2) and transverse reinforcement (3) of the beam, the longitudinal reinforcement (6) and transverse reinforcement (7) of the wall, the beam concrete (1), the wall concrete (5), and the anchor (4); process the anchor longitudinal reinforcement (2.1), the non-anchor longitudinal reinforcement (2.2), and the beam transverse reinforcement (3), the wall longitudinal reinforcement (6), and the wall transverse reinforcement (7) to the predetermined length and shape; fix the beam anchor longitudinal reinforcement (2.1) to the anchor (4); Step 2: Tie the longitudinal reinforcement (6) and transverse reinforcement (7) of the wall; Step 3: Erect the wall formwork; Step 4: According to the design requirements, pour the wall concrete (5) into the wall formwork and cure the wall concrete to the predetermined strength; Step 5: Erect the beam formwork; Step 6: Tie the longitudinal reinforcement of the beam anchor (2.1), the longitudinal reinforcement of the non-anchor beam (2.2), and the transverse reinforcement of the beam (3) to form the beam reinforcement cage; the longitudinal reinforcement of the beam anchor (2.1) and the longitudinal reinforcement of the beam anchor (2.2) are inserted into the gap between the longitudinal reinforcement of the wall (6) and the transverse reinforcement of the wall (7); Step 7: Pour the concrete for the beam-wall joints according to the design requirements and cure it to the predetermined strength.