Fabricated steel reinforced concrete connection node structure and construction method thereof
Through the prefabricated steel-bone concrete connecting the node structure, the node area is transferred to the scope of the beam component, and integrated production is achieved, solving the problems of insufficient construction complexity and safety of traditional nodes, improving construction speed and durability, and adapting to the needs of different building types.
Patent Information
- Application Number
- CN202510696745.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-28
- Publication Date
- 2025-07-18
AI Technical Summary
The construction of traditional steel-bonded concrete connection nodes is complicated, the construction accuracy is difficult to control, and the safety and durability of nodes are insufficient, resulting in slow construction speed and low assembly degree, making it difficult to meet the needs of high-rise buildings and large public buildings.
The prefabricated steel-bone concrete connection node structure is adopted. By prefabricating end plates and comb connection plates in the steel-bone concrete structure factory, and installing high-strength bolt connections on site, the node area is transferred to the beam component range, integrated production and efficient splicing are achieved.
It improves the construction speed, enhances the safety and durability of nodes, adapts to different building needs, promotes the development of prefabricated buildings, and solves the construction accuracy and safety issues of traditional nodes.
Smart Images
Figure CN120331366A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the construction technology field, and particularly relates to a prefabricated steel reinforced concrete connection joint structure and its construction method. Background Technique
[0002] As a high-strength and high-quality building structure form, the steel reinforced concrete structure has strong durability and good seismic performance, and is widely used in high-rise buildings and large public buildings. However, in traditional steel reinforced concrete connection joints, the joint parts have complex structures, the construction process is cumbersome, the technical requirements for construction workers are relatively high, and it is difficult to control the welding quality of steel bars, the pouring quality of concrete, the precision of joint connection, etc., thus affecting the bearing capacity and durability of the joints.
[0003] For the design of the steel reinforced concrete system, relevant design regulations and construction requirements are put forward in some technical codes and regulations such as "Technical Specification for Steel Reinforced Concrete Structures" (YB9082 - 2006). The existing technical problems are: the industrialization and prefabrication degree of the steel reinforced concrete system are not high enough, resulting in low construction speed and production efficiency. At the same time, for some buildings with relatively large spans and heavy loads, the steel reinforced concrete systems designed using such design codes and specifications often have problems such as large sizes and large deflections. Summary of the Invention
[0004] In order to solve the above technical problems, the present invention aims to provide a standardized joint with high construction efficiency, high installation precision and high joint safety.
[0005] The technical solution adopted by the present invention to solve the above problems is: A prefabricated steel reinforced concrete connection joint structure includes steel bars and steel columns of the steel reinforced concrete structures on both sides to be connected. It is characterized in that: a first end plate is welded to the end of the steel column of the left steel reinforced concrete structure, and comb-shaped connecting plates are fixedly connected to the upper edge and the lower edge of the first end plate respectively. The comb-shaped connecting plates are fixedly connected to the steel bars of the left steel reinforced concrete structure through rib connection welds; first bolt holes are arranged on both sides of the steel column on the first end plate. A second end plate is welded to the end of the steel column of the right steel reinforced concrete structure, and comb-shaped connecting plates are fixedly connected to the upper edge and the lower edge of the second end plate respectively. The comb-shaped connecting plates are fixedly connected to the steel bars of the left steel reinforced concrete structure through rib connection welds; second bolt holes are arranged on both sides of the steel column on the second end plate, and high-strength bolts are installed in the first bolt holes and the second bolt holes; the upper end and the lower end of the second end plate are shorter than the end of the first end plate by a width of one plate thickness, and the upper end and the lower end of the second end plate are fixedly connected through plate connection welds.
[0006] The present invention adopting the above structure has the following beneficial effects compared with the prior art: The nodes of the present invention transfer the on-site connection node area from within the beam-column intersection range to within the beam member range. The beam-column core area is completed in one-piece fabrication, and only the beam needs to be spliced on-site. This new type of connection node should have the characteristics of high efficiency, standardization, and modularization. It can meet different types of building requirements while ensuring structural safety, and promote the application and development of prefabricated building technology.
[0007] As an optimization, a further technical solution of the above structure is: One end of the comb-shaped connecting plate is a flat edge, and several tongues are arranged at intervals at the other end. The roots of the tongues are connected by U-shaped grooves.
[0008] Beneficial effects obtained from the above characteristics: This example of the comb-shaped connecting plate is lightweight, has a relatively large welding length with the steel bars, ensuring the firmness of the steel bar connection. Each tongue is connected by a U-shaped groove, making the plate surface not easily deformed.
[0009] The steel bar connection weld is a wedge-shaped cross-section with a length of 150 mm - 200 mm.
[0010] Beneficial effects obtained from the above characteristics: This type of weld has high strength.
[0011] Stiffening plates are also provided on both sides of the steel skeleton. The side edges of the stiffening plates are welded to the steel skeleton, and the ends are welded to the first end plate or the second end plate.
[0012] Beneficial effects obtained from the above characteristics: The stiffening plates improve the connection stability between the steel skeleton and the end plates.
[0013] To solve the above technical problems, the present invention also provides the following construction method, and its specific technical solution is: The construction method of the prefabricated steel-concrete connection node structure is carried out according to the following steps: First step, expose steel bars and H-shaped steel skeletons with a length of 400 - 500 mm at the ends of the steel-concrete structure. Second step, weld the first end plate to the end of the steel skeleton of one side of the steel-concrete structure, then weld the end of the steel bar of the left steel-concrete structure to the comb-shaped connecting plate, and weld stiffening plates on both sides of the steel skeleton respectively. Third step, weld the second end plate to the end of the steel skeleton of the other side of the steel-concrete structure, then weld the end of the steel bar of the right steel-concrete structure to the comb-shaped connecting plate, and weld stiffening plates on both sides of the steel skeleton respectively. Fourth step, after transporting the component to the site, fix the first end plate and the second end plate with high-strength bolts. Fifth step, pour concrete outside the above node, and apply a protective layer thickness of 20 mm - 30 mm on the outer periphery of the second end plate.
[0014] The present invention adopting the above method has the following beneficial effects compared with the prior art: This method can not only improve the construction speed and reduce the on-site construction procedures, but also effectively solve the problems that may occur in the construction of traditional joints, such as difficult to ensure construction accuracy, low joint safety, poor durability, etc. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 Internal structure diagram of the assembled steel reinforced concrete splicing joint of the present invention; Figure 2 Cross-sectional schematic diagram of the assembled steel reinforced concrete splicing joint of the present invention; Figure 3 Elevation schematic diagram of the assembled steel reinforced concrete splicing joint of the present invention; Figure 4 Construction process schematic diagram of the assembled steel reinforced concrete splicing joint of the present invention; In the figure: 1, steel bar; 2, steel skeleton; 31, first end plate; 32, second end plate; 4, high-strength bolt; 5, plate connection weld; 6, comb-shaped connecting plate; 7, bar connection weld; 8, stiffening plate; 9, concrete. DETAILED DESCRIPTION OF THE INVENTION
[0016] The present invention will be further described below in conjunction with embodiments. The purpose is only to better understand the content of the present invention. Therefore, the examples given do not limit the protection scope of the present invention.
[0017] See Figures 1 to 4 , a structure of an assembled steel reinforced concrete connection joint provided by the present invention is applicable to on-site assembled connection of steel reinforced concrete components and is located in the component area range of the beam. Specifically, the joint structure includes: Steel bars 1 and steel skeletons 2 of the steel reinforced concrete structures on both sides to be connected; A first end plate 31 is welded to the end of the steel skeleton 2 of the left steel reinforced concrete structure. Comb-shaped connecting plates 6 are fixedly connected to the upper and lower edges of the first end plate 31 respectively. The comb-shaped connecting plates 6 are fixedly connected to the steel bars 1 of the left steel reinforced concrete structure through bar connection welds 7; First bolt holes are provided on both sides of the steel skeleton 2 on the first end plate 31. A second end plate 32 is welded to the end of the steel skeleton 2 of the right steel reinforced concrete structure. Comb-shaped connecting plates 6 are fixedly connected to the upper and lower edges of the second end plate 32 respectively. The comb-shaped connecting plates 6 are fixedly connected to the steel bars 1 of the left steel reinforced concrete structure through bar connection welds 7; Second bolt holes are provided on both sides of the steel skeleton 2 on the second end plate 32. High-strength bolts 4 are installed in the first bolt holes and the second bolt holes; The upper and lower ends of the second end plate 32 are shorter than the ends of the first end plate 31 by the width of one plate thickness. The upper and lower ends of the second end plate 32 are fixedly connected through plate connection welds 5.
[0018] Specifically, one end of the comb-shaped connecting plate 6 is a flat edge, and a number of tongues are arranged at intervals at the other end. The roots of the tongues are connected by U-shaped grooves.
[0019] The steel bar 1 is welded to the comb-shaped connecting plate 6 through the bar connection weld 7, and then the force of the steel bar 1 is transmitted to the first end plate 31 by the connecting plate 6. The steel skeleton 2 is directly welded to the first end plate 31. The first end plate 31 and the second end plate 32 at the connection are connected by high-strength bolts 4. The two end plates differ by one plate thickness (end plate thickness) at both the upper and lower ends, and the two end plates are connected by fillet welds. Through this connection method, the force of the left steel reinforced concrete member is first transmitted to the first end plate 31, and then transmitted to the other side through the welds and high-strength bolts 4 between the first end plates 31.
[0020] Optionally, the bar connection weld 7 has a wedge-shaped cross-section and a length of 150 mm - 200 mm Optionally, stiffening plates 8 are also provided on both sides of the steel skeleton 2. The sides of the stiffening plates 8 are welded to the steel skeleton 2, and the ends are welded to the first end plate 31 or the second end plate 32 The construction method of the assembled steel reinforced concrete connection node structure of the present invention is carried out according to the following steps: The first step is to reserve 400 - 500 mm long exposed steel bars 1 and H-shaped steel skeletons 2 at the end of the steel reinforced concrete structure; The second step is to weld the first end plate 31 to the end of the steel skeleton 2 of one side of the steel reinforced concrete structure, then weld the end of the steel bar 1 of the left steel reinforced concrete structure to the comb-shaped connecting plate 6, and weld the stiffening plates 8 on both sides of the steel skeleton 2 respectively; The third step is to weld the second end plate 32 to the end of the steel skeleton 2 of the other side of the steel reinforced concrete structure, then weld the end of the steel bar 1 of the right steel reinforced concrete structure to the comb-shaped connecting plate 6, and weld the stiffening plates 8 on both sides of the steel skeleton 2 respectively; The fourth step is to fix the first end plate 31 and the second end plate 32 with high-strength bolts 4 after transporting the components to the site; The fifth step is to pour concrete 9 outside the above-mentioned node, and a protective layer thickness of 20 mm - 30 mm is applied to the outer periphery of the second end plate 32.
[0021] This embedded node provided by the present invention can effectively protect the node from external environmental corrosion, and at the same time ensure the bearing capacity of the node and prevent rapid failure under extreme working conditions such as fire.
[0022] Economic benefit analysis: (1) Improve construction efficiency: The new assembled steel reinforced concrete connection node transfers the on-site connection node area to the beam member range, realizing the integrated production of the beam-column core area. Only the splicing of the beam needs to be carried out on-site, thus significantly improving the construction speed and reducing the on-site construction procedures.
[0023] (2) Enhance structural safety and durability: The design of this joint effectively solves the problems that may occur in the construction of traditional joints, such as difficult-to-guarantee construction accuracy and low joint safety, etc., and improves the overall safety of the structure.
[0024] (3) Strong adaptability, promoting the development of prefabricated buildings: The new type of connection joint has the characteristics of high efficiency, standardization, and modularization, and can adapt to different types of building requirements, providing important technical support for the popularization and application of prefabricated buildings, and promoting the application and development of prefabricated building technology.
[0025] Based on the characteristics of the steel reinforced concrete structure, the present invention innovatively designs a prefabricated connection joint. By optimizing the joint structure and connection method, the construction efficiency and connection quality of prefabricated steel reinforced concrete buildings are improved, and a series of technical problems in traditional steel reinforced concrete connection joints are solved. This innovative joint not only meets the requirements of modern buildings for safety, durability, and construction efficiency, but also provides important technical support for the popularization and application of prefabricated buildings.
[0026] The above are only the preferred and feasible embodiments of the present invention, and do not limit the scope of rights of the present invention accordingly. Any equivalent changes made by using the content of the specification and drawings of the present invention are included within the scope of rights of the present invention.
Claims
1. A prefabricated steel reinforced concrete connection joint structure, comprising steel bars (1) and steel skeletons of two sides of steel reinforced concrete structures to be connected, characterized in that: At the end of the steel section of the left steel reinforced concrete structure, a first end plate (31) is welded. At the upper and lower edges of the first end plate (31), comb-shaped connecting plates (6) are fixedly connected respectively. The comb-shaped connecting plates (6) are fixedly connected to the steel bars (1) of the left steel reinforced concrete structure through rib connection welds (7); on the first end plate (31), first bolt holes are arranged on both sides of the steel section. At the end of the steel section of the right steel reinforced concrete structure, a second end plate (32) is welded. At the upper and lower edges of the second end plate (32), comb-shaped connecting plates (6) are fixedly connected respectively. The comb-shaped connecting plates (6) are fixedly connected to the steel bars (1) of the left steel reinforced concrete structure through rib connection welds (7); on the second end plate (32), second bolt holes are arranged on both sides of the steel section. High-strength bolts (4) are installed in the first bolt holes and the second bolt holes; the upper and lower ends of the second end plate (32) are shorter than the ends of the first end plate (31) by a width equal to the thickness of one plate. The upper and lower ends of the second end plate (32) are fixedly connected through plate connection welds (5).
2. The prefabricated steel reinforced concrete connection joint structure according to claim 1, characterized in that: One end of the comb-shaped connecting plate (6) is a flat edge, and at the other end, a number of tongues are arranged at intervals. The roots of the tongues are connected by U-shaped grooves.
3. The assembled steel reinforced concrete connection joint structure according to claim 1, characterized in that: The rib connection weld (7) has a wedge-shaped cross-section and a length of 150 mm - 200 mm.
4. The assembled steel reinforced concrete connection joint structure according to claim 1, characterized in that: Stiffening plates (8) are also provided on both sides of the steel section. The sides of the stiffening plates (8) are welded to the steel section, and the ends are welded to the first end plate (31) or the second end plate (32).
5. The prefabricated steel reinforced concrete connection joint structure according to claim 1, characterized in that: The plate connection weld (5) is a fillet weld.
6. The construction method of the prefabricated steel-reinforced concrete connection joint structure according to any one of the above claims, characterized in that, It is carried out according to the following steps: First step, at the end of the steel reinforced concrete structure, expose steel bars (1) and H-shaped steel sections with a length of 400 - 500 mm. Second step, weld the first end plate (31) at the end of the steel section of one side of the steel reinforced concrete structure, then weld the ends of the steel bars (1) of the left steel reinforced concrete structure to the comb-shaped connecting plates (6), and weld stiffening plates (8) on both sides of the steel section respectively. Third step, weld the second end plate (32) at the end of the steel section of the other side of the steel reinforced concrete structure, then weld the ends of the steel bars (1) of the right steel reinforced concrete structure to the comb-shaped connecting plates (6), and weld stiffening plates (8) on both sides of the steel section respectively. Fourth step, after transporting the component to the site, fix the first end plate (31) and the second end plate (32) through high-strength bolts (4). Fifth step, pour concrete (9) outside the above-mentioned joint, and apply a protective layer thickness of 20 mm - 30 mm to the outer periphery of the second end plate (32).