Prefabricated concrete foundation and prefabricated concrete foundation linkage beam connecting structure

Abstract

The utility model relates to the technical field of prefabricated buildings, in particular to a prefabricated concrete foundation and prefabricated concrete foundation connecting beam connecting structure which comprises a connecting assembly arranged between a prefabricated concrete foundation and a prefabricated concrete foundation connecting beam. The first connecting assembly is fixedly arranged on the side face of the prefabricated concrete foundation, the second connecting assembly is fixedly arranged at the end of the prefabricated concrete foundation connecting beam, and the joint concrete is arranged between the prefabricated concrete foundation and the prefabricated concrete foundation connecting beam after the first connecting assembly and the second connecting assembly are connected. According to the connecting structure of the prefabricated concrete foundation and the prefabricated concrete foundation connecting beam, the reliability and durability of connection of the prefabricated foundation and the prefabricated foundation connecting beam are guaranteed, construction is fast and convenient, wet operation hardly exists on a construction site, the construction efficiency is greatly improved, and the economic and social benefits of foundation construction are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of prefabricated buildings, in particular to a connection structure of a prefabricated concrete foundation and a prefabricated concrete foundation connecting beam. Background Art

[0002] Prefabricated buildings are assembled on-site using prefabricated components. They have the advantages of convenient construction, high efficiency, and little impact on the environment. Therefore, they have been increasingly used in various construction projects.

[0003] However, while the research and application of prefabricated building structures above ground are relatively mature, significant gaps remain in the research and application of the prefabrication and assembly of underground foundations. This is particularly true for building types such as warehouses, garages, and steel-structured factories. While prefabricated reinforced concrete foundations have begun to gain popularity, their construction technology and connection design are still in their infancy, lacking unified standards and specifications.

[0004] Currently, there are a variety of ways to connect prefabricated independent foundations and foundation beams. However, many of these methods lack scientific and rational design, and there is a great deal of arbitrariness during construction. This not only affects the stability and durability of the structure, but also poses potential risks to the safe use of the building. Therefore, how to design a safe, applicable, and economically reasonable connection node between prefabricated independent foundations and foundation beams has become a technical problem that needs to be solved urgently.

[0005] In view of this, the utility model proposes a connection structure between a precast concrete foundation and a precast concrete foundation connecting beam, which aims to ensure the reliability and durability of the connection between the precast foundation and the precast foundation connecting beam through a scientific and reasonable connection node design, while improving construction efficiency and reducing construction costs, providing strong technical support for the promotion and application of prefabricated buildings in the underground foundation part. Utility Model Content

[0006] In order to solve the above problems, the utility model provides a connection structure of precast concrete foundation and precast concrete foundation connecting beam, which adopts precast reinforced concrete independent foundation in the factory, precast reinforced concrete foundation beam in the factory, and the construction connection is carried out at the construction site; the production of precast foundation and connecting beam is not affected by weather, green construction has little pollution to the environment, can effectively shorten the construction period, has good molding and accurate size; not only the reliability and durability of the connection between the precast foundation and the precast foundation connecting beam are guaranteed, but also the construction is quick and convenient, and there is almost no wet operation at the construction site, which greatly improves the construction efficiency and enhances the economic and social benefits of foundation construction.

[0007] The technical solution of the utility model is as follows:

[0008] A connection structure between a precast concrete foundation and a precast concrete foundation connecting beam, comprising a connection assembly disposed between the precast concrete foundation and the precast concrete foundation connecting beam, the connection assembly comprising a first connection assembly fixedly disposed on a side surface of the precast concrete foundation and a second connection assembly fixedly disposed on an end portion of the precast concrete foundation connecting beam, and a joint concrete disposed between the precast concrete foundation and the precast concrete foundation connecting beam after the first connection assembly and the second connection assembly are connected;

[0009] The first connection component includes an upper flange of a foundation embedded steel corbel, a web plate of a foundation embedded steel corbel and a lower flange of a foundation embedded steel corbel;

[0010] The second connection component includes a connection beam embedded connection plate and a connection beam top longitudinal reinforcement and a connection beam bottom longitudinal reinforcement thrown out from the precast concrete foundation connection beam;

[0011] The embedded connecting plate of the connecting beam is fixedly connected to the web of the embedded steel corbel of the foundation by bolts, and the longitudinal reinforcement at the top of the connecting beam and the longitudinal reinforcement at the bottom of the connecting beam are respectively fixedly connected to the upper flange of the embedded steel corbel of the foundation and the lower flange of the embedded steel corbel of the foundation.

[0012] The upper flange of the foundation embedded steel corbel and the lower flange of the foundation embedded steel corbel are arranged in a horizontal direction, and the web of the foundation embedded steel corbel is vertically welded and fixed between the upper flange of the foundation embedded steel corbel and the lower flange of the foundation embedded steel corbel.

[0013] A foundation embedded steel plate is embedded in the side of the precast concrete foundation, and the upper flange of the foundation embedded steel corbel, the web of the foundation embedded steel corbel and the lower flange of the foundation embedded steel corbel are welded to the foundation embedded steel plate.

[0014] The embedded connecting plate of the connecting beam is arranged in a vertical direction.

[0015] A connection beam embedded steel plate is embedded in the end face of the precast concrete foundation connection beam, and the connection beam embedded connecting plate is welded to the connection beam embedded steel plate.

[0016] Long circular bolt holes are respectively provided on the embedded steel corbel web of the foundation and the embedded connecting plate of the connecting beam, and the connecting bolts are fastened with nuts after passing through the bolt holes.

[0017] Additional stirrups are provided in the joint concrete.

[0018] Additional stirrups for the joints are provided on the periphery of the connection components.

[0019] Foundation embedded anchor bolts are embedded in the precast concrete foundation.

[0020] Several foundation embedded anchor bolts are vertically arranged in the middle of the precast concrete foundation.

[0021] The beneficial effects of the present invention are:

[0022] 1. The utility model discloses a connection structure between a precast concrete foundation and a precast concrete foundation connecting beam. The connection structure between the precast concrete foundation and the precast concrete foundation connecting beam ensures the firmness and reliability of the connection between the precast concrete foundation and the precast concrete foundation connecting beam through the careful design of the connection components, including the bolt connection of the embedded connecting bracket and the embedded connecting plate and the welding of the longitudinal reinforcement. At the same time, the provision of additional stirrups at the joints and the pouring of the joint concrete further enhance the integrity and durability of the connection node, meeting the requirements of structural safety.

[0023] 2. The utility model discloses a connection structure between a precast concrete foundation and a precast concrete foundation connecting beam. The connection structure between the precast concrete foundation and the precast concrete foundation connecting beam is prefabricated in the factory and connected on site, which greatly shortens the construction period and reduces the manpower and material investment on the construction site. At the same time, there is almost no wet work on the construction site, which reduces the difficulty and complexity of construction and improves the construction efficiency and quality.

[0024] 3. The utility model discloses a connection structure of a precast concrete foundation and a precast concrete foundation connecting beam. The production of the precast concrete foundation and the connecting beam of the precast concrete foundation and the precast concrete foundation connecting beam connection structure is not affected by weather, and the pollution to the environment during the construction process is small, which is in line with the concept of green building; in addition, due to the improvement of construction efficiency and the reduction of costs, it also performs well in economic benefits, laying a solid foundation for the widespread application of prefabricated buildings in underground foundation parts.

[0025] 4. The utility model discloses a precast concrete foundation and a precast concrete foundation connecting beam connection structure. The factory prefabrication method of the precast concrete foundation and the precast concrete foundation connecting beam connection structure ensures the precise size and excellent molding quality of the precast concrete foundation and the connecting beam, reduces errors and adjustment work on the construction site, and improves the stability and aesthetics of the overall structure.

[0026] 5. The utility model discloses a connection structure between a precast concrete foundation and a precast concrete foundation connecting beam. The connection structure between a precast concrete foundation and a precast concrete foundation connecting beam provides a standardized solution for the connection between a precast concrete foundation and a precast concrete foundation connecting beam, helps promote the formulation and implementation of relevant acceptance standards, and provides strong technical support for the promotion and application of prefabricated buildings in the underground foundation part. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] By reading the detailed description of the preferred embodiment below, the solutions and advantages of the present application will become clear to those skilled in the art. The accompanying drawings are only used to illustrate the preferred embodiment and are not to be considered as limiting the present invention.

[0028] In the attached figure:

[0029] Figure 1 This is a front view of a connection structure between a precast concrete foundation and a precast concrete foundation connecting beam according to an embodiment of the present utility model;

[0030] Figure 2 A top view of a connection structure between a precast concrete foundation and a precast concrete foundation connecting beam according to an embodiment of the present invention;

[0031] Figure 3 This is a front view of a precast concrete foundation of a connection structure of a precast concrete foundation and a precast concrete foundation connecting beam according to an embodiment of the present invention;

[0032] Figure 4 A top view of a precast concrete foundation and a precast concrete foundation connecting beam connection structure according to an embodiment of the present invention;

[0033] Figure 5 A front view of a precast concrete foundation connecting beam of a connection structure of a precast concrete foundation and a precast concrete foundation connecting beam according to an embodiment of the present invention;

[0034] Figure 6 A top view of a precast concrete foundation connecting beam of a connection structure between a precast concrete foundation and a precast concrete foundation connecting beam according to an embodiment of the present invention;

[0035] The components represented by the reference numerals in the figure are:

[0036] The utility model comprises: 1. precast concrete foundation; 2. precast concrete foundation connecting beam; 3. longitudinal reinforcement at the top of the connecting beam; 4. longitudinal reinforcement at the bottom of the connecting beam; 5. embedded steel plate in the foundation; 6. embedded steel plate in the connecting beam; 7. embedded connecting plate in the connecting beam; 8. upper flange of embedded steel corbel in the foundation; 9. additional stirrups for the joint; 10. concrete for the joint; 11. connecting bolts; 12. embedded anchor bolts in the foundation; 13. web of embedded steel corbel in the foundation; 14. lower flange of embedded steel corbel in the foundation. DETAILED DESCRIPTION

[0037] Example 1, as Figure 1 and Figure 2 As shown, the connection structure between the precast concrete foundation and the precast concrete foundation connecting beam includes a connection component arranged between the precast concrete foundation 1 and the precast concrete foundation connecting beam 2, and the connection component is composed of a connection component 1 fixed to the side of the precast concrete foundation 1, a connection component 2 fixed to the end of the precast concrete foundation connecting beam 2, and a joint concrete 10 filled in the connection gap between the two.

[0038] like Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown, connection assembly 1 specifically includes an upper flange 8 of a pre-embedded steel corbel, a web 13 of a pre-embedded steel corbel, and a lower flange 14 of a pre-embedded steel corbel. These three components are welded to the pre-embedded steel plate 5 embedded in the side of the precast concrete foundation 1, forming a stable support structure. The upper flange 8 and lower flange 14 are arranged horizontally, with the web 13 vertically connected between them.

[0039] Connection assembly 2 includes a vertically mounted pre-embedded tie beam connection plate 7, welded to a pre-embedded tie beam steel plate 6 embedded in the end face of the precast concrete foundation tie beam 2. Simultaneously, top and bottom longitudinal reinforcement bars 3 and 4 are extended from the tie beam to connect to the upper and lower flanges 8 and 14 of connection assembly 1.

[0040] The connection assembly 1 and the connection assembly 2 are fixed by bolt connection. Specifically, oblong bolt holes are respectively opened on the foundation embedded steel corbel web 13 and the connection beam embedded connection plate 7, and connecting bolts 11 are passed through the bolt holes and tightened with nuts to form a reliable mechanical connection.

[0041] Additional stirrups 9 are provided in the joint concrete 10 and are arranged at the periphery of the connection assembly to enhance the overall strength and crack resistance of the joint.

[0042] During implementation, the foundation embedded steel plate 5 and the connecting beam embedded steel plate 6 are first embedded in the precast concrete foundation 1 and precast concrete foundation connecting beam 2, respectively, according to the design requirements, and the corresponding connecting components are welded. Subsequently, the precast concrete foundation 1 and precast concrete foundation connecting beam 2 are aligned, and connecting components 1 and 2 are fastened together using connecting bolts 11 and nuts. Finally, joint concrete 10 is poured, and additional stirrups 9 are arranged within the joint. After the concrete solidifies, a complete connection structure is formed.

[0043] In Example 2, the connection node between the precast concrete foundation and the precast concrete foundation connecting beam is connected by bolts and welding at the construction site through a connection component, and the joint concrete is poured to finally form a whole.

[0044] The connection components include embedded connection brackets of precast concrete foundation, embedded connection plates of precast concrete foundation connecting beams and extended longitudinal stress-bearing steel bars, additional stirrups and joint concrete.

[0045] The connecting plate 7 of the connecting beam 2 is connected to the corbel web 13 of the foundation 1 by bolts 11 to bear the vertical shear force during the installation process.

[0046] The longitudinal reinforcement connecting beam 2 is welded to the corbel flange of the foundation to bear the bending moment at the beam end during use.

[0047] An additional stirrup 9 is installed on site and the joint concrete 10 is poured to ensure that the connecting beam and the foundation finally form a whole and bear the shear force at the beam end during use.

[0048] The precast concrete foundation 1 is pre-buried with column foot anchor bolts 12. The steel columns are fixed with nuts at the construction site, and the anchor bolts bear the column bottom force.

[0049] Precast concrete foundation production: Tie foundation steel bars on the steel formwork table in the workshop to ensure that the steel bars are accurately positioned and evenly spaced; embed steel plates 5 in the foundation according to the position of the connecting beam for subsequent welding of the connecting corbels; embed column foot anchor bolts 12 according to the requirements of the upper steel column foot nodes to ensure that the anchor bolt positions are accurate and the verticality meets the requirements; pour concrete in the steel mold to form a precast concrete foundation 1; after the concrete reaches the specified strength, demould processing is carried out and maintenance is carried out in the designated position until the design strength is reached; weld steel corbels with oblong bolt holes on the web (including the foundation embedded steel corbel upper flange 8, the foundation embedded steel corbel web 13 and the foundation embedded steel corbel lower flange 14) on the embedded steel plate 5 to ensure that the corbel position is accurate and the welding quality is reliable.

[0050] Precast concrete foundation tie beam production: Tie beam reinforcement is tied on the workshop steel formwork, ensuring accurate rebar positioning and uniform spacing. Steel plates 6 are embedded at the beam ends, and a certain length of longitudinal reinforcement (longitudinal bars 3 at the top of the tie beam and longitudinal bars 4 at the bottom of the tie beam) is extended for subsequent welding to the foundation brackets. Concrete is poured into the steel mold to form the precast concrete foundation tie beam 2. Once the concrete reaches the specified strength, it is demolded and cured in designated locations until it reaches the designed strength. Connecting plates 7 with oblong bolt holes are welded to the embedded steel plates 6 of the tie beam, ensuring accurate positioning and reliable welding quality.

[0051] Construction site connections: Excavate the foundation pit according to the design drawings, and construct the foundation cushion layer for leveling. Hoist and install the precast concrete foundation according to pre-drawn control lines. Install additional stirrups 9 on the foundation steel corbels, ensuring accurate placement and uniform spacing. Once all foundations are in place, hoist the precast concrete foundation connecting beam. Once the connecting beam is in place, use connecting bolts 11 to position and tighten it to the precast foundation steel corbel web 13. Lap weld the top longitudinal reinforcement 3 of the connecting beam to the upper flange 8 of the foundation steel corbel, and lap weld the bottom longitudinal reinforcement 4 to the lower flange 14 of the foundation steel corbel, ensuring reliable welding quality. Backfill the foundation pit and install the connecting beam formwork at the joint. Pour the joint concrete 10, ensuring that the concrete is vibrated and compacted, free of bubbles. Once the joint concrete reaches a certain strength, remove the formwork. Install the superstructure steel columns and tighten them with nuts and embedded anchor bolts 12 to ensure overall structural stability.

[0052] The connection structure between the precast concrete foundation and the precast concrete foundation connecting beam uses a connection assembly to connect the precast concrete foundation and the precast concrete foundation connecting beam at the construction site by bolting and welding, and then pouring the joint concrete to form a whole. The connection assembly includes the embedded connection bracket of the precast concrete foundation, the embedded connection plate of the precast concrete foundation connecting beam, and the longitudinal force-bearing steel bars thrown out, additional stirrups at the joint, and joint concrete. The connection plate of the connecting beam is bolted to the web of the foundation's bracket to bear the vertical shear force during installation. The longitudinal reinforcement of the connecting beam is welded to the flange of the foundation's bracket to bear the bending moment at the beam end during use. After installing a joint additional stirrup on site, the joint concrete is poured to ensure that the connecting beam and the foundation finally form a whole and bear the shear force at the beam end during use. The production of precast foundations and connecting beams is not affected by weather, and the green construction has little environmental pollution, can effectively shorten the construction period, and has good molding and precise dimensions. The connection node of the utility model not only ensures the reliability and durability of the connection between the prefabricated foundation and the prefabricated foundation connecting beam, but also is quick and convenient to construct, with almost no wet work on the construction site, greatly improving construction efficiency and enhancing the economic and social benefits of foundation construction.

Claims

1. A connection structure between a precast concrete foundation and a precast concrete foundation connecting beam, characterized in that: The invention comprises a connection assembly arranged between a precast concrete foundation (1) and a precast concrete foundation connecting beam (2), wherein the connection assembly comprises a connection assembly 1 fixedly arranged on the side of the precast concrete foundation (1), a connection assembly 2 fixedly arranged at the end of the precast concrete foundation connecting beam (2), and a joint concrete (10) arranged between the precast concrete foundation (1) and the precast concrete foundation connecting beam (2) after the connection assembly 1 and the connection assembly 2 are connected; The first connection component comprises an upper flange of a foundation embedded steel corbel (8), a web plate of a foundation embedded steel corbel (13) and a lower flange of a foundation embedded steel corbel (14); The second connection component includes a connection beam embedded connection plate (7) and a connection beam top longitudinal reinforcement (3) and a connection beam bottom longitudinal reinforcement (4) thrown out from the precast concrete foundation connection beam (2); The pre-buried connecting plate (7) of the connecting beam is fixedly connected to the web plate (13) of the pre-buried steel corbel of the foundation by bolts, and the longitudinal reinforcement (3) at the top of the connecting beam and the longitudinal reinforcement (4) at the bottom of the connecting beam are respectively fixedly connected to the upper flange (8) of the pre-buried steel corbel of the foundation and the lower flange (14) of the pre-buried steel corbel of the foundation by welding.

2. The precast concrete foundation and precast concrete foundation connecting beam connection structure according to claim 1, characterized in that: The foundation pre-embedded steel corbel upper flange (8) and the foundation pre-embedded steel corbel lower flange (14) are arranged in a horizontal direction, and the foundation pre-embedded steel corbel web (13) is vertically welded and fixed between the foundation pre-embedded steel corbel upper flange (8) and the foundation pre-embedded steel corbel lower flange (14).

3. The precast concrete foundation and precast concrete foundation connecting beam connection structure according to claim 2, characterized in that: A foundation embedded steel plate (5) is embedded on the side of the precast concrete foundation (1), and the foundation embedded steel corbel upper flange (8), the foundation embedded steel corbel web (13) and the foundation embedded steel corbel lower flange (14) are welded to the foundation embedded steel plate (5).

4. The connection structure of a precast concrete foundation and a precast concrete foundation connecting beam according to claim 2, characterized in that: The connecting beam embedded connecting plate (7) is arranged in a vertical direction.

5. The connection structure of a precast concrete foundation and a precast concrete foundation connecting beam according to claim 4, characterized in that: A connection beam embedded steel plate (6) is embedded in the end surface of the precast concrete foundation connection beam (2), and a connection beam embedded connecting plate (7) is welded to the connection beam embedded steel plate (6).

6. The precast concrete foundation and precast concrete foundation connecting beam connection structure according to claim 4, characterized in that: Oblong bolt holes are respectively provided on the foundation embedded steel corbel web (13) and the connection beam embedded connecting plate (7), and the connecting bolts (11) are passed through the bolt holes and then fastened with nuts.

7. The precast concrete foundation and precast concrete foundation connecting beam connection structure according to claim 1, characterized in that: Additional joint stirrups (9) are provided in the joint concrete (10).

8. The connection structure of a precast concrete foundation and a precast concrete foundation connecting beam according to claim 7, characterized in that: The joint additional stirrups (9) are arranged on the periphery of the connection assembly.

9. The connection structure of a precast concrete foundation and a precast concrete foundation connecting beam according to claim 1, characterized in that: Foundation embedded anchor bolts (12) are embedded in the precast concrete foundation (1).

10. The precast concrete foundation and precast concrete foundation connecting beam connection structure according to claim 9, characterized in that: A plurality of foundation embedded anchor bolts (12) are vertically arranged in the middle of the precast concrete foundation (1).

Images