Connecting joint structure of precast concrete wall
By welding load-bearing components into the casting space of the precast concrete wall to form an integral connection, the problems of unreliability and insufficient load-bearing capacity of traditional connection methods are solved, and a highly efficient vertical connection effect is achieved.
Patent Information
- Application Number
- CN202520206323.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-10
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-02-10
AI Technical Summary
Traditional precast concrete wall connection methods suffer from problems such as unreliable sleeve connections, incomplete grouting, eccentric reinforcement wrapping, and stress concentration, resulting in weak splicing and insufficient load-bearing capacity in the edge areas.
The load-bearing components are welded together within the casting space. The two precast concrete walls are anchored into a whole by the cast-in-place components. The design of the embedded steel bars and load-bearing plates enables the direct transmission of internal forces in the load-bearing components, avoiding the need for grouting connection with sleeves.
It improves the vertical connection bearing capacity of precast concrete walls, ensures the firmness and load-bearing capacity of splices, facilitates on-site construction, adapts to complex scenarios, has high economic benefits, and is highly practical.
Smart Images
Figure CN223824402U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of building structure technology, and specifically relates to a connection node structure for a precast concrete wall. Background Technology
[0002] Currently, industrialization and standardization of construction are gradually becoming important development directions in the construction industry. Among these, the quality of the vertical connection structure of precast reinforced concrete walls has a significant impact on the safety and stability of assembled reinforced concrete structures containing precast reinforced concrete walls. In practical engineering, traditional vertical connections of precast concrete walls involve a one-to-one correspondence between the pre-embedded reinforcing bars inside the upper wall and the lower wall, often employing wet connection methods such as sleeve grouting and grout anchoring. However, sleeve grouting connections suffer from unreliability, incomplete pressure grouting, and are prone to insufficient grouting pressure, leading to localized reinforcement encapsulation, severe eccentricity, and stress concentration in the grouting material. Therefore, we propose a new connection node structure for precast concrete walls to address these issues. Utility Model Content
[0003] To address the aforementioned problems, this utility model provides a connection node structure for precast concrete walls, which solves the issues of weak splicing and insufficient load-bearing capacity in the edge areas of traditional precast concrete walls.
[0004] This utility model is achieved through the following solution: a connection node structure for a precast concrete wall, comprising:
[0005] The pouring space is formed between the splicing ends of two precast concrete walls to be joined vertically.
[0006] Two load-bearing component assemblies are respectively installed on two precast concrete walls to be spliced vertically. The first ends of the two load-bearing component assemblies are respectively embedded in the corresponding precast concrete walls, and the second ends of the two load-bearing component assemblies extend outward into the casting space. The two load-bearing component assemblies are welded together accordingly.
[0007] The cast-in-place component is formed by pouring concrete in the casting space. The cast-in-place component anchors two load-bearing component groups and two precast concrete walls to be spliced into a whole.
[0008] A further improvement of the connection node structure of the precast concrete wall of this utility model is that the precast concrete wall is a reinforced concrete structure, including a middle section with pre-embedded steel bars and two edge sections without pre-embedded steel bars.
[0009] Each load-bearing component group includes three load-bearing components, which are respectively located in the middle section and two edge sections. The load-bearing components in the middle section are formed by corresponding pre-embedded steel bars, and the load-bearing components in the edge sections are formed by load-bearing plates pre-embedded in the corresponding edge sections.
[0010] A further improvement of the connection node structure of the precast concrete wall of this utility model is that a plurality of first stirrups are fixed at the first end of each load-bearing plate, and the plurality of first stirrups are arranged along the height direction of the first end of the load-bearing plate and pre-embedded in the edge section.
[0011] A further improvement of the connection node structure of the precast concrete wall of this utility model is that it also includes a plurality of second stirrups fixed to the second end of each load-bearing plate, and the plurality of second stirrups are arranged along the height direction of the second end of the load-bearing plate and pre-embedded in the cast-in-place component.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0013] This utility model facilitates on-site construction through its connection node structure. By welding the vertical load-bearing components of the upper and lower precast concrete walls, it eliminates the need for sleeve grouting connections, effectively avoiding the pain points and difficulties of existing reinforced concrete wall sleeve grouting connection technology. It can adapt to various complex scenarios, has high economic benefits, and is highly practical. Furthermore, it enables direct and effective transmission of internal forces between the load-bearing components and reinforcing bars. This welding connection method between the load-bearing components and reinforcing bars significantly improves the load-bearing capacity of the vertical connection of the precast concrete wall. Attached Figure Description
[0014] Figure 1 A schematic diagram of the overall structure of this utility model is shown.
[0015] Figure 2 This utility model is shown Figure 1 Schematic diagram of the AA section.
[0016] Figure 3 This utility model is shown Figure 1 Schematic diagram of the cross-section of BB.
[0017] In the diagram: 1. Precast concrete wall; 2. Casting space; 3. Reinforcing steel; 4. Load-bearing component; 5. First stirrup; 6. Second stirrup. Detailed Implementation
[0018] To address the problems of weak joints and insufficient load-bearing capacity in edge areas of traditional precast concrete walls, this invention provides a connection node structure for precast concrete walls. The following detailed description, in conjunction with the accompanying drawings, illustrates this connection node structure for precast concrete walls.
[0019] See Figures 1-3 As shown, a connection node structure for a precast concrete wall includes:
[0020] The casting space 2 is formed between the splicing ends of two precast concrete walls 1 to be spliced in the vertical direction;
[0021] Two load-bearing component assemblies are respectively installed on two precast concrete walls 1 to be spliced vertically. The first ends of the two load-bearing component assemblies are pre-embedded in the corresponding precast concrete wall 1, and the second ends of the two load-bearing component assemblies extend outward into the casting space 2. The two load-bearing component assemblies are welded together accordingly.
[0022] The cast-in-place component is formed by pouring concrete in the casting space 2. The cast-in-place component anchors the two load-bearing component groups and the two precast concrete walls 1 to be spliced into a whole.
[0023] By welding the vertical load-bearing components of the upper and lower precast concrete walls 1 together, the internal forces of the load-bearing components can be directly and effectively transferred. This welding connection method significantly improves the load-bearing capacity of the vertical connection of the precast concrete walls 1. There are also mature quality inspection methods for the welding between the load-bearing components, which effectively ensures the quality of the splicing node structure of the two precast concrete walls 1 to be spliced, and has great application prospects.
[0024] Among them, the precast concrete wall 1 is a reinforced concrete structure, including a middle section with pre-embedded steel bars 3 and two edge sections without pre-embedded steel bars 3;
[0025] Each load-bearing component group includes three load-bearing components 4, which are respectively located in the middle section and two edge sections. The load-bearing component 4 in the middle section is formed by the corresponding pre-embedded steel bar 3, and the load-bearing component 4 in the edge section is formed by the load-bearing plate pre-embedded to the corresponding edge section.
[0026] For details, please refer to Figure 1-3 As shown, multiple reinforcing bars 3 are pre-embedded in the middle section and are arranged at intervals; the first end of each load-bearing plate is pre-embedded in the edge section and the second end extends outward to the casting space 2; in this embodiment, there are four load-bearing plates in each edge section, and the four load-bearing plates are respectively set at the four corners of the edge section. The four load-bearing plates in each edge section of the upper precast concrete wall 1 are respectively welded to the four load-bearing plates in each edge section of the lower precast concrete wall 1. The load-bearing plates can be steel plates or structural steel.
[0027] By adopting the above design, the load-bearing capacity of the edge section can be greatly improved, and the welded connection can realize the direct and effective transmission of internal forces of the corresponding load-bearing components 4, resulting in good stress performance.
[0028] Among them, see Figure 1 and Figure 3 As shown, each load-bearing plate has multiple first stirrups 5 fixed at its first end, and the multiple first stirrups 5 are arranged along the height direction of the first end of the load-bearing plate and pre-embedded in the edge section.
[0029] Specifically, in this embodiment, each first stirrup 5 is welded to four load-bearing members 4;
[0030] By adopting the above design, the load-bearing performance of the edge segment can be greatly improved, and the load-bearing capacity can be increased.
[0031] Among them, see Figure 1 and Figure 3 As shown, it also includes a plurality of second stirrups 6 fixed to the second end of each load-bearing plate, and the plurality of second stirrups 6 are arranged along the height direction of the second end of the load-bearing plate and pre-embedded in the cast-in-place component.
[0032] Specifically, in this embodiment, each second stirrup 6 is welded to four load-bearing members 4;
[0033] By adopting the above design, the load-bearing capacity of cast-in-place components can be improved, thereby increasing the stress strength of the connection node structure.
[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0035] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. Those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be defined by the appended claims.
Claims
1. A connection node structure for a precast concrete wall, characterized in that, include: The pouring space is formed between the splicing ends of two precast concrete walls to be joined vertically. Two load-bearing component assemblies are respectively set on two precast concrete walls to be spliced vertically. The first ends of the two load-bearing component assemblies are respectively embedded in the corresponding precast concrete walls, and the second ends of the two load-bearing component assemblies extend outward into the pouring space. The two load-bearing component assemblies are welded together accordingly. as well as The cast-in-place component is formed by pouring concrete in the casting space. The cast-in-place component anchors two load-bearing component groups and two precast concrete walls to be spliced into a whole.
2. The connection node structure of the precast concrete wall as described in claim 1, characterized in that, The precast concrete wall is a reinforced concrete structure, including a middle section with pre-embedded reinforcing bars and two edge sections without pre-embedded reinforcing bars; Each load-bearing component group includes three load-bearing components, which are respectively located in the middle section and two edge sections. The load-bearing components in the middle section are formed by corresponding pre-embedded steel bars, and the load-bearing components in the edge sections are formed by load-bearing plates pre-embedded in the corresponding edge sections.
3. The connection node structure of the precast concrete wall as described in claim 2, characterized in that, Each of the load-bearing plates has a plurality of first stirrups fixed at its first end, and the plurality of first stirrups are arranged along the height direction of the first end of the load-bearing plate and pre-embedded in the edge section.
4. The connection node structure of the precast concrete wall as described in claim 2, characterized in that, It also includes a plurality of second stirrups fixed to the second end of each load-bearing plate, and the plurality of second stirrups are arranged along the height direction of the second end of the load-bearing plate and pre-embedded in the cast-in-place component.