High-strength prefabricated concrete foundation

Abstract

The utility model relates to the technical field of constructional engineering, in particular to a high-strength prefabricated concrete foundation which comprises a foundation unit and a connecting unit. The foundation unit comprises a base and a supporting seat, the four side faces of the base are two first butt joint faces and two second butt joint faces respectively, the first butt joint faces are sunken to form first butt joint grooves, the second butt joint faces are sunken to form second butt joint grooves, the connecting unit is a connecting beam, and the upper middle portion of the head end of the connecting beam is sunken to form a connecting groove. The head end of the connecting beam is matched with the first butt-joint groove, the upper middle portion of the tail end of the connecting beam protrudes to form a connecting part, the connecting part is matched with the second butt-joint groove, and the connecting part can be connected with the connecting groove of another connecting unit or connected with the second butt-joint groove. Multi-direction rapid splicing is realized; the connecting units can be connected with the adjacent basic units or another connecting unit at the same time, and different site layout requirements are met.

Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, and in particular to a high-strength precast concrete foundation. Background Technology

[0002] Traditional precast concrete foundations often adopt a single modular design, which has the following problems: (1) The connection between modules is complicated (such as welding, bolt fixing, etc.), resulting in low installation efficiency and high requirements for construction accuracy; (2) The foundation unit structure is bulky, and the transportation and hoisting costs are high; (3) The foundation unit is prone to stress concentration, resulting in insufficient overall structural strength; (4) It lacks scalability and is difficult to adapt to different site layout requirements.

[0003] Chinese patent application number CN202322256295.6, entitled "A Prefabricated Column-Based Concrete Foundation Structure with Connecting Steel Beams," discloses a prefabricated column-based concrete foundation structure with connecting steel beams. This structure includes several foundation units and connecting steel beam assemblies. Each foundation unit comprises a reinforced concrete foundation body, column foot embedded parts, and embedded connectors. The connection between the foundation units and the connecting steel beam assemblies requires numerous embedded parts. Once the positions of these embedded parts are fixed, they are difficult to change during subsequent modifications or functional adjustments, potentially limiting changes in space usage. If design changes require new connection points, the existing embedded parts may not be compatible, necessitating additional connectors or reinforcement measures. Stress concentration points easily form at the interface between the embedded parts and the concrete, potentially leading to cracks or localized damage under long-term loads. Furthermore, the load-bearing capacity at the connection point of two connecting steel beam assemblies may not meet usage requirements, easily resulting in breakage. Therefore, the connection between two adjacent foundation units is limited by the initial length of the connecting steel beam assemblies. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a high-strength precast concrete foundation in order to overcome the problems of complex inter-module connection methods (such as welding, bolt fixing, etc.), low installation efficiency and high requirements for construction accuracy in the existing technology.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a high-strength precast concrete foundation, including a foundation unit and a connection unit;

[0006] The basic unit includes a base and a support seat arranged on the base. The base and the support seat are an integrated structure. The four sides of the base are respectively two oppositely arranged first mating surfaces and two oppositely arranged second mating surfaces. The first mating surfaces are recessed to form first mating grooves, and the second mating surfaces are recessed to form second mating grooves.

[0007] The connecting unit is a connecting beam. The upper middle part of the first end of the connecting beam is recessed to form a connecting groove. The first end of the connecting beam matches the first docking groove and is embedded in the first docking groove. The upper middle part of the tail end of the connecting beam protrudes to form a connecting part that matches the connecting groove. The connecting part matches the second docking groove. The connecting part can connect to the connecting groove of another connecting unit or to the second docking groove. The connecting part is embedded in the second docking groove. Through the standardized interlocking design of the basic unit and the connecting unit, multi-directional rapid splicing can be achieved, reducing on-site construction time and labor costs. The base and the support are integrally formed. Combined with the interlocking connection of the C-shaped docking groove and the connecting beam, the overall shear and bending resistance is improved. The connecting unit can connect to adjacent basic units or another connecting unit at the same time to adapt to different site layout requirements.

[0008] To address the issue of poor connection stability caused by an unreasonable design of the docking groove shape, the first docking groove is further designed with a C-shaped structure.

[0009] To address the issues of concentrated stress on the base causing cracking, affecting durability, and making it inconvenient to transfer and handle the base unit, the base is further equipped with a main body and a docking part located in the first docking groove, with the main body and the docking part being fixedly connected.

[0010] To address the issue of uneven stress distribution caused by a single support structure, the support further includes a first support portion, a transition portion, and a second support portion. The first support portion is fixedly connected to the base, the bottom of the first support portion is fixedly connected to the transition portion, and the top of the transition portion is fixedly connected to the second support portion.

[0011] To address the issue of stress concentration at the connection between the support and the base, a conical structure is further included in the transition section, which tapers from bottom to top towards the center.

[0012] To address the issue of unstable connection between the superstructure and the foundation, the foundation unit further includes anchors, with the top surfaces of the anchors and support bases fixedly connected.

[0013] The beneficial effects of this utility model are as follows: This utility model provides a high-strength precast concrete foundation, which achieves rapid splicing in multiple directions through the standardized interlocking design of the foundation unit and the connecting unit, reducing on-site construction time and labor costs; the base and the support are integrally formed, and the C-shaped docking groove and the connecting beam are interlocked to improve the overall shear and bending resistance; the connecting unit can connect to the adjacent foundation unit or another connecting unit at the same time, adapting to different site layout requirements. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a top view of the structure of this utility model;

[0016] Figure 2 This is a front view structural diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the structure of the connection unit of this utility model;

[0018] Figure 4 This is a utility model Figure 1 Schematic diagram of the cross-sectional structure at point AA;

[0019] Figure 5 This is a structural schematic diagram of another usage state of this utility model.

[0020] In the figure: 1. Basic unit, 11. Base, 111. First mating surface, 112. Second mating surface, 113. First mating groove, 114. Second mating groove, 115. Main body, 116. Mating part, 12. Support seat, 121. First support part, 122. Transition part, 123. Second support part, 13. Anchoring element, 2. Connecting unit, 21. Connecting beam, 22. Connecting groove, 23. Connecting part. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0022] like Figure 1 This is a structural schematic diagram of the present invention, a high-strength precast concrete foundation, including a foundation unit 1 and a connecting unit 2. Through the standardized interlocking design of the foundation unit 1 and the connecting unit 2, multi-directional rapid splicing is achieved, reducing on-site construction time and labor costs. The foundation unit 1 and the connecting unit 2 are precast separately, reducing the weight of a single piece and facilitating transportation and hoisting.

[0023] like Figure 1 , 2 As shown, the basic unit 1 includes a base 11 and a support seat 12 arranged on the base 11. The base 11 and the support seat 12 are an integrated structure. The base 11 and the support seat 12 are integrally formed. Combined with the C-shaped first docking groove 113 and the connecting beam 21, the overall shear and bending resistance is improved. The four sides of the base 11 are two oppositely arranged first docking surfaces 111 and two oppositely arranged second docking surfaces 112. The first docking surface 111 has a recessed first docking groove 113, and the second docking surface 112 has a recessed second docking groove 114. The first docking groove 113 has a C-shaped structure. The C-shaped groove increases the contact area and enhances the tightness of the fit and the shear resistance.

[0024] like Figure 1 , 2 As shown, the base 11 includes a main body 115 and a docking part 116 located in the first docking groove 113. The main body 115 and the docking part 116 are fixedly connected. The main body and the docking part are designed to be separated to disperse stress and avoid local damage. The storage of the docking part 116 and the second docking groove 114 facilitates the equipment to lift and transfer the base unit 1.

[0025] like Figure 1 , 2 As shown, the support base 12 includes a first support part 121, a transition part 122 and a second support part 123. The first support part 121 is fixedly connected to the base 11, the bottom of the first support part 121 is fixedly connected to the transition part 122, the top of the transition part 122 is fixedly connected to the second support part 123, and the first support part 121, the transition part 122 and the second support part 123 can optimize the load transfer path and improve the compressive strength.

[0026] The transition section 122 has a tapered structure that tapers from bottom to bottom towards the center. The tapered transition section 122 of the support base 12 optimizes the stress transmission path, reduces stress concentration, guides stress to diffuse evenly to the base, and reduces the risk of structural deformation.

[0027] like Figure 1 , 2 As shown, the basic unit 1 includes an anchor 13, which is fixedly connected to the top surface of the support base 12. The anchor 13 improves the stability of the connection with the superstructure (such as steel columns or equipment bases).

[0028] like Figure 3 , 4 As shown in Figure 5, the connecting unit 2 is a connecting beam 21. A connecting groove 22 is recessed at the upper center of the first end of the connecting beam 21. The first end of the connecting beam 21 matches the first mating groove 113, and the first end of the connecting beam 21 is fitted into the first mating groove 113. A connecting part 23, matching the connecting groove 22, protrudes from the upper center of the tail end of the connecting beam 21. The connecting part 23 matches the second mating groove 114. The connecting part 23 can connect to the connecting groove 22 of another connecting unit 2 or to the second mating groove 114. The connecting part 23 is fitted into the second mating groove 114. The connecting unit 2 can simultaneously connect adjacent base units 1 or another connecting unit 2 (e.g., ...). Figure 2 , 5 As shown in the figure, to adapt to different site layout requirements, the connection of the two connecting units 2 utilizes a mortise and tenon structure to ensure connection strength.

[0029] Installation process: According to the design drawings, multiple foundation units 1 are positioned at the construction site at a preset interval; the first end (with connecting groove 22) of the connecting beam 21 of the connecting unit 2 is embedded into the first docking groove 113 of the foundation unit 1; the tail end (with connecting part 23) of the connecting beam 21 is inserted into the second docking groove 114 of the next foundation unit 1 or the connecting groove 22 of another connecting beam 21; the mating parts are fixed for a second time by grouting or fasteners to ensure the rigidity of the connection.

[0030] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A high-strength precast concrete foundation, characterized in that, The base unit (1) comprises a base (11) and a support seat (12) arranged on the base (11), the base (11) and the support seat (12) are integrated structures, four sides of the base (11) are respectively two oppositely arranged first abutting surfaces (111) and two oppositely arranged second abutting surfaces (112), the first abutting surface (111) is recessed to form a first abutting groove (113), the second abutting surface (112) is recessed to form a second abutting groove (114), The connecting unit (2) is a connecting beam (21), the connecting beam (21) is recessed in the middle of the head end to form a connecting groove (22), the head end of the connecting beam (21) is matched with the first abutting groove (113), the head end of the connecting beam (21) is embedded in the first abutting groove (113), the tail end of the connecting beam (21) is protruded in the middle to form a connecting part (23) matched with the connecting groove (22), and the connecting part (23) is matched with the second abutting groove (114), the connecting part (23) can be connected with the connecting groove (22) of another connecting unit (2) or connected with the second abutting groove (114), and the connecting part (23) is embedded in the second abutting groove (114). The first abutting groove (113) is in a C-shaped structure.

2. A high strength precast concrete foundation as defined in claim 1, characterized in that: The base (11) comprises a main body part (115) and an abutting part (116) located in the first abutting groove (113), and the main body part (115) and the abutting part (116) are fixedly connected.

3. A high strength precast concrete foundation as defined in claim 1 wherein: The support seat (12) comprises a first support part (121), a transition part (122) and a second support part (123), the first support part (121) and the base (11) are fixedly connected, the bottom of the first support part (121) and the transition part (122) are fixedly connected, and the top end of the transition part (122) and the second support part (123) are fixedly connected.

4. A high strength precast concrete foundation as defined in claim 1 wherein: The transition part (122) is in a conical structure that contracts to the center from bottom to top.

5. A high strength precast concrete foundation as defined in claim 4, wherein: The base unit (1) comprises an anchor (13), and the anchor (13) and the top surface of the support seat (12) are fixedly connected.

6. A high strength precast concrete foundation as defined in claim 1 wherein: ​

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