An assembled foundation

Abstract

The present invention relates to the technical field of building foundation construction, and mainly provides an assembled foundation. The foundation includes a plurality of prefabricated substrates and prefabricated cover plates, the prefabricated substrates include a substrate body and an assembly groove body protruding from the surface of the substrate body, the plurality of prefabricated substrates are spliced ​​together through the substrate body to form a base layer, and the assembly groove bodies on the plurality of prefabricated substrates are spliced ​​together to form a groove body network. The prefabricated cover plate includes a cover plate body and a support foot, one end of the support foot is connected to the side end surface of the cover plate body, the plurality of cover plate bodies are covered on the groove body network and the side end surface is flush with the inner side wall of the assembly groove body, and the other end of the support foot extends into the assembly groove body. The use of a cover assembled foundation can improve the overall structural reliability and service life while ensuring the efficiency of the assembly operation.

Description

Technical Field

[0001] The invention belongs to the technical field of building foundation construction, and particularly relates to an assembled foundation. Background Art

[0002] The foundation refers to the load-bearing structure below the ground level of a building, such as foundation pits, caps, frame columns, and ground beams. It is the underground extension of the building's related structures, and its function is to bear the loads transmitted from the building's superstructure and transmit them together with its own weight to the foundation. The foundation bears all the loads of the building, so the foundation should have sufficient strength and meet the durability requirements. If the foundation is damaged before the superstructure, it will be very difficult to inspect and reinforce it, and it will also affect the service life of the building.

[0003] In the related technology, in the related buildings in the substation, especially the core parts such as the main transformer, corresponding foundations need to be set up underneath them. Traditional foundations usually include cast-in-place concrete foundations and prefabricated foundations.

[0004] In the related art, cast-in-place concrete foundations require on-site formwork, reinforcement, pouring, maintenance and other operations, with a long construction period and high labor intensity for workers. The existing assembled foundation, for example, Chinese patent CN213390213U discloses a high-voltage mortise and tenon structure main transformer foundation that improves integrity and is easy to assemble. The bottom raft is a mortise and tenon assembly structure, and the raft and the strip foundation are also mortise and tenon assembly structures. Although this assembled foundation is easy to assemble to a certain extent, the connection reliability between the strip foundation and the raft is poor, and it is limited by the manufacturing accuracy of the mortise and tenon structure. In the long-term working process, it is easy to cause structural instability and connection failure between the strip foundation and the raft. In addition, the foundation in the related art often needs to be prefabricated after determining the top load-bearing equipment or building layout plan, and finally transported to the site for assembly and installation during installation, which takes up a long construction period. Summary of the invention

[0005] The embodiment of the present invention provides an assembled foundation, which can improve the overall structural reliability and service life while ensuring the assembly efficiency. The specific technical solution is as follows:

[0006] An assembled foundation comprises a plurality of prefabricated base plates and a plurality of prefabricated cover plates.

[0007] The prefabricated substrate comprises a substrate body and an assembly groove body protruding from the surface of the substrate body, a plurality of the prefabricated substrates are spliced ​​together through the substrate body to form a base layer, and the assembly groove bodies on the plurality of the prefabricated substrates are spliced ​​together to form a groove body network;

[0008] The prefabricated cover plate includes a cover plate body and a support foot, wherein the support foot is perpendicular to the cover plate body and one end of the support foot is connected to the side end surface of the cover plate body, a plurality of the support feet are provided and are arranged at intervals from each other, a plurality of the cover plate bodies are covered on the trough body net and the side end surfaces are flush with the inner side walls of the assembly trough body, and the other end of the support foot extends into the assembly trough body.

[0009] Optionally, the substrate body has a plurality of splicing edges, the assembly slot body includes slot body segments corresponding to the plurality of splicing edges one by one, one end of the plurality of slot body segments is vertically connected to the corresponding splicing edges, and the other ends of the plurality of slot body segments are intersected and connected.

[0010] Optionally, an ear plate is provided at the other end of the trough body section, the ear plate is vertically connected to the trough body section and is flush with the side end surface of the cover plate body, and a first assembly hole is provided on the ear plate.

[0011] Optionally, a connecting opening connecting the outer side surface of the ear plate and the assembly groove body is provided in the middle portion of the ear plate.

[0012] Optionally, a flange plate is protruding from the top of the spliced ​​edge, and a second assembly hole is provided on the flange plate.

[0013] Optionally, the cover plate body is positively deformed, and the side angle of the cover plate body matches the angle of two adjacent slot body sections.

[0014] Optionally, the side length of the cover plate body is n times that of the slot body section, where n is an integer not less than 2.

[0015] Optionally, a tongue and groove is vertically provided on the top of the side end surface of the cover body.

[0016] Optionally, the length of the support leg matches the depth of the assembly slot.

[0017] Optionally, the support legs are steel bar support legs.

[0018] Compared with the prior art, the beneficial effects of the embodiments of the present invention include at least:

[0019] The assembled foundation provided by the embodiment of the present invention adopts a structure composed of a bottom prefabricated substrate and a plurality of prefabricated cover plates on the top. The substrate bodies are spliced ​​together to form a base layer, and a plurality of assembly slots are spliced ​​together to form a slot net to support and position the upper cover plate body. Finally, concrete is poured into the assembly slot body and the slot cavity formed between the plurality of cover plate bodies to fix the whole body in place. The support leg structure on the side of the cover plate body can simultaneously play the role of installation and positioning, and play the role of resisting tension and bearing compressive stress at the assembly joint after pouring. The overall combination has high reliability and good coordinated force bearing capacity, which can ensure the structural performance of the foundation. The prefabricated substrate and the prefabricated cover plate can be prefabricated separately, which can improve the prefabrication production efficiency, reduce production costs, and facilitate the transportation, storage and on-site construction of prefabricated parts. While ensuring the efficiency of assembly operations, it can improve the overall structural reliability and service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A structural schematic diagram of an assembled foundation provided by an embodiment of the present invention;

[0021] Figure 2 A schematic structural diagram of a prefabricated substrate provided in an embodiment of the present invention;

[0022] Figure 3 A schematic structural diagram of a prefabricated cover plate provided in an embodiment of the present invention;

[0023] Figure 4 A schematic structural diagram of another prefabricated substrate provided in an embodiment of the present invention;

[0024] Figure 5 A schematic structural diagram of another prefabricated cover plate provided in an embodiment of the present invention;

[0025] Figure 6 A schematic diagram of the partial structure of another assembled foundation provided in an embodiment of the present invention.

[0026] In the figure: 1-prefabricated base plate; 2-prefabricated cover plate; 11-base plate body; 12-assembly trough body; 21-cover plate body; 22-support leg; 111-joining edge; 121-trough body section; 122-ear plate; 123-flange plate; 211-mortise and tenon groove; 1221-first assembly hole; 1222-connecting port; 1231-second assembly hole; a-rebar. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] In the related technology, in the related buildings in the substation, especially the core parts such as the main transformer, corresponding foundations need to be set up underneath them. Traditional foundations usually include cast-in-place concrete foundations and prefabricated foundations.

[0029] In the related art, cast-in-place concrete foundations require on-site formwork, reinforcement, pouring, and maintenance operations, which have a long construction period and high labor intensity for workers. The existing assembled foundations, such as Chinese patent CN213390213U, disclose a high-voltage mortise and tenon structure main transformer foundation that improves integrity and is easy to assemble. The bottom raft is a mortise and tenon assembly structure, and the raft and the strip foundation are also mortise and tenon assembly structures. Although this assembled foundation is easy to assemble to a certain extent, the connection reliability between the strip foundation and the raft is poor, and it is limited by the manufacturing accuracy of the mortise and tenon structure. In the long-term working process, it is easy to cause structural instability and failure of the connection between the strip foundation and the raft.

[0030] Figure 1 A structural schematic diagram of an assembled foundation provided by an embodiment of the present invention; Figure 2 A schematic structural diagram of a prefabricated substrate provided in an embodiment of the present invention; Figure 3 A schematic structural diagram of a prefabricated cover plate provided in an embodiment of the present invention; Figure 4 A schematic structural diagram of another prefabricated substrate provided in an embodiment of the present invention; Figure 5 A schematic structural diagram of another prefabricated cover plate provided in an embodiment of the present invention; Figure 6 A partial structural diagram of another assembled foundation provided by an embodiment of the present invention is shown in FIG. Figures 1 to 6 As shown, an embodiment of the present invention provides an assembled foundation, including a plurality of prefabricated base plates 1 and a plurality of prefabricated cover plates 2.

[0031] The prefabricated substrate 1 includes a substrate body 11 and an assembly groove 12 protruding from the surface of the substrate body 11. Multiple prefabricated substrates 1 are spliced ​​together through the substrate body 11 to form a base layer, and the assembly grooves 12 on multiple prefabricated substrates 1 are spliced ​​together to form a groove network.

[0032] The prefabricated cover plate 2 includes a cover plate body 21 and a support leg 22. The support leg 22 is perpendicular to the cover plate body 21 and one end of the support leg 22 is connected to the side end surface of the cover plate body 21. A plurality of support legs 22 are provided and arranged at intervals. The plurality of cover plate bodies 21 are covered on the trough body net and the side end surfaces are flush with the inner side wall of the assembly trough body 12. The other end of the support leg 22 extends into the assembly trough body 12.

[0033] In an embodiment of the present invention, the assembled foundation is formed by combining and splicing a plurality of prefabricated substrates 1 and a plurality of prefabricated cover plates 2. During on-site construction, a corresponding number of prefabricated substrates 1 are selected for splicing according to the on-site setting requirements, and adjacent prefabricated substrates 1 are fixedly connected by substrate bodies to form a base layer at the bottom of the foundation pit as a bottom support. An assembly groove 12 is convexly provided on each substrate body 11, and the assembly groove 12 is composed of two parallel and spaced longitudinal plates, and a groove structure is formed between the two longitudinal plates. After the plurality of substrate bodies 11 are spliced ​​together, the assembly grooves 12 on the plurality of prefabricated substrates 1 are also spliced ​​together along their respective extension directions to form a groove network on the upper surface of the base layer. After that, the prefabricated cover plate 2 used for bearing load is placed on the trough net structure. The shape of the cover plate body 21 of the prefabricated cover plate 2 is set to match the shape of each grid structure after the trough net is formed. After the cover is in place, each cover plate body 21 will just cover a corresponding grid, and the side end surface of the cover plate body 21 is flush with the inner side wall of the assembly trough 12, and the support leg 22, one end of which is connected to the side end surface of the cover plate body 21 and extends in a direction perpendicular to the cover plate body 21, will extend into the assembly trough 12 at the other end. When assembled in place, multiple support legs 22 will abut against the corresponding inner side walls on the assembly trough 12 to limit the cover plate body 21 in the horizontal direction to avoid lateral shaking. For example, in the embodiment of the present invention, the support leg 22 can be a steel bar structure embedded in the prefabricated cover plate 2 when it is prefabricated, one end of which is embedded in the side end surface of the cover plate body 21, and the protruding portion thereof is extended to one side of the cover plate body 21 in a direction perpendicular to the cover plate body 21 after being bent. Finally, the two opposite longitudinal plates of each assembly trough body 12, that is, the top of the two side trough walls will be respectively placed with the cover plate body 21, and the side end surface of the cover plate body 21 is flush with the inner side wall of the assembly trough body 12 to jointly form a side wall of the trough cavity, and the assembly trough body 12 and the side end surface of the cover plate body 21 located above the two side walls jointly define the trough cavity for casting.

[0034] By pouring concrete into the groove cavity to fill it, the support feet 22 are buried until they are flush with the upper surfaces of the multiple cover plate bodies 21, so as to integrally fix and connect the multiple prefabricated base plates 1 and the multiple prefabricated cover plates 2, and complete the assembly construction of the prefabricated foundation.

[0035] The assembled foundation provided by the embodiment of the present invention adopts a structure composed of a bottom prefabricated substrate 1 and a plurality of top prefabricated cover plates 2. The substrate bodies 11 are spliced ​​together to form a base layer, and a plurality of assembly slots 12 are spliced ​​together to form a slot net to support and position the upper cover plate body 21. Finally, concrete is poured into the assembly slot 12 and into the slot cavity formed between the plurality of cover plate bodies 21 to fix the whole body in place. The support leg 22 structure on the side of the cover plate body 21 can simultaneously play the role of installation and positioning, and play the role of resisting tension and bearing compressive stress at the assembly joint after pouring. The overall combination has high reliability and good coordinated force bearing capacity, which can ensure the structural performance of the foundation. The prefabricated substrate 1 and the prefabricated cover plate 2 can be prefabricated separately, which can improve the prefabrication production efficiency, reduce production costs, and facilitate the transportation, storage and on-site construction of prefabricated parts. While ensuring the efficiency of assembly operations, it can improve the overall structural reliability and service life.

[0036] It should be noted that in the embodiment of the present invention, since after assembly, it is only necessary to fill concrete between the groove cavity formed by the side end surface of the cover body 21 and the inner wall of the assembly groove body 12, and the space between the outer walls of multiple assembly groove bodies 12, and the space between the base body 11 and the cover body 21 can be a non-solid structure, while ensuring the overall assembly stability of the prefabricated foundation, the amount of concrete used for pouring can be effectively saved.

[0037] It should be noted that in the embodiment of the present invention, the modularized and spliced ​​prefabricated base plate 1 and prefabricated cover plate 2 are used to form an assembled foundation unit, and there is no need to determine the equipment layout plan before prefabricating the bottom foundation. In this way, the prefabrication of the prefabricated base plate 1 and the prefabricated cover plate 2 can be started before the equipment layout plan is determined, and they can be transported to the site for splicing and assembly during installation, without the need for cast-in-place production, further shortening the construction period.

[0038] Optionally, the substrate body 11 has a plurality of splicing edges 111, and the assembly slot body 12 includes slot body segments 121 corresponding to the plurality of splicing edges 111, one end of the plurality of slot body segments 121 is vertically connected to the corresponding splicing edges 111, and the other ends of the plurality of slot body segments 121 are intersecting and connected. Exemplarily, in an embodiment of the present invention, each prefabricated substrate 1 and prefabricated cover plate 2 adopts corresponding structures and specifications to achieve standardized and large-scale production. According to different installation environments, the cover plate body 21 and the substrate body 11 used for supporting below can adopt different shapes for adaptive installation. Reference Figures 1 to 3For example, the assembly slot 12 on the substrate body 11 is in a cross shape, and each assembly slot 12 includes four slot sections 121 that are at an angle of 90° to each other. The corresponding substrate body 11 below is also adaptively arranged in a cross shape, and four corresponding slot sections 121 are provided with four joint edges 111. When assembling, four prefabricated substrates 1 are taken as a minimum grouping, and the four prefabricated substrates 1 are sequentially joined and connected through the joint edges 111. The two slot sections 121 on each assembly slot 12 are sequentially connected in the first place to form a grid structure in a square slot net. Correspondingly, the cover body 21 correspondingly installed on such a slot net is a square that matches the grid structure. Reference Figures 4 to 6 In another possible implementation, the assembly slot 12 on the substrate body 11 is in a "Y" shape, and each assembly slot 12 includes three slot segments 121 that are at an angle of 120° to each other. The corresponding substrate body 11 below is also adaptively set to a "Y" shape, and three joint edges 111 are set corresponding to the three slot segments 121. When assembling, six prefabricated substrates 1 are taken as a minimum group, and the six prefabricated substrates 1 are sequentially joined and connected through the joint edges 111. The two slot segments 121 on each assembly slot 12 are sequentially connected to form a grid structure in a regular hexagonal slot net. Correspondingly, the cover plate body 21 correspondingly installed on this slot net is a regular hexagon matching the grid structure, and the side length of the cover plate body 21 is twice the length of each slot segment 121. Based on this structure, each cover plate edge of the cover plate body 21 corresponds to at least two slot segments 121. After being assembled in place, it just covers the regular hexagonal grid structure, that is, the six cover plate edges of one cover plate body 21 correspond to the slot body sections 121 of the six assembly slot bodies 12 respectively and are cross-connected.

[0039] According to actual needs, more shapes of prefabricated base plates 1 and prefabricated cover plates 2 can be used as long as they can achieve overall combination and coordinated force support. The embodiment of the present invention does not limit the specific shape. The trough body sections 121 of multiple assembly trough bodies 12 jointly support a single prefabricated cover plate 2, which can effectively improve the structural reliability and assembly stability.

[0040] Optionally, the other end of the trough body section 121 is provided with an ear plate 122, the ear plate 122 is vertically connected to the trough body section 121 and is flush with the side end surface of the cover plate body 21, and a first assembly hole 1221 is provided on the ear plate 122. Exemplarily, in the embodiment of the present invention, after two adjacent prefabricated base plates 1 are assembled, the trough body sections 121 above them are butted together through the ear plates 122, and the first assembly holes 1221 on the ear plates 122 are used to bolt the two together, so as to realize the fixed connection between the base plate bodies 11, with a simple structure and convenient assembly.

[0041] Optionally, a connecting opening 1222 is provided in the middle of the ear plate 122 to connect the outer side surface of the ear plate 122 and the assembly slot body 12. For example, in the embodiment of the present invention, the ear plates 122 and the ear plates 122 can be closed to each other, or the connecting openings 1222 can be provided to connect the adjacent butted assembly slot bodies 12 to form a continuous assembly slot. After pouring concrete, the concrete in the slot body net can be formed into a continuous grid beam, which effectively improves the structural integrity of the assembled foundation, and improves the stress performance and load bearing capacity of the foundation.

[0042] Optionally, a flange plate 123 is protrudingly provided on the top of the splicing edge 111, and a second assembly hole 1231 is provided on the flange plate 123. Exemplarily, in the embodiment of the present invention, in addition to the connection of the joint of the assembly slot body 12 through the ear plate 122, a flange plate 12 can also be provided at the splicing edge 111 where adjacent cover plate bodies 21 are spliced ​​with each other, and a plurality of second assembly holes 1231 spaced apart on the splicing edge 111 are used for bolt fixing, so as to realize multi-point fixed connection between the base plate bodies 11, and effectively improve assembly stability.

[0043] Optionally, a tongue groove 211 is vertically provided at the top of the side end surface of the cover plate body 21. Exemplarily, in an embodiment of the present invention, while pouring concrete into the groove cavity to fill it until it is flush with the upper surface of the adjacent cover plate body 21 to achieve a fixed connection between the cover plate bodies 21, by opening a tongue groove 211 extending vertically toward the middle at the top of the side end surface of the cover plate body 21, multiple pairs of coaxial corresponding tongue grooves 211 groups can be formed on two adjacent cover plate bodies 21. Before pouring, by inserting steel bars a into the corresponding groups of tongue grooves 211, when the poured cement is flush with the upper surface of the cover plate body 21, the groups of tongue grooves 211 will be filled and the steel bars a will be immersed in the concrete at the same time, further improving the bonding area and bonding between the prefabricated cover plate 2 and the concrete, and the cast-in-place concrete can produce a multi-directional constraint effect on the prefabricated cover plate 2, further improving the structural integrity and coordinated force bearing of the cover plate layer. The horizontally placed steel bars a can further limit and fix the assembly position of the adjacent cover plate bodies 21 in the horizontal direction, so that the two can constrain each other and avoid shaking and dislocation in the shear direction during the pouring process. After being filled with concrete, it can also play a role in shear resistance and pressure bearing inside, further improving the overall structural stability of the assembled foundation.

[0044] Optionally, the length of the support leg 22 matches the groove depth of the assembly groove 12. For example, in the embodiment of the present invention, after the cover plate body 21 is installed, the end of the support leg 22 extending downward along the inner side wall of the assembly groove 12 will be in contact with the groove bottom of the assembly groove 12 through pre-design, which can improve the load bearing capacity of the cover plate layer, and the support leg 22 can meet the requirements of the force performance such as the reliably bearing moment, and the load on the cover plate layer can also be reliably transferred to the base layer, further improving the reliability of the assembled foundation.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An assembled foundation, characterized in that: It comprises a plurality of prefabricated base plates (1) and a plurality of prefabricated cover plates (2), The prefabricated substrate (1) comprises a substrate body (11) and an assembly groove body (12) protruding from the surface of the substrate body (11); a plurality of the prefabricated substrates (1) are spliced ​​together through the substrate body (11) to form a base layer; and the assembly groove bodies (12) on the plurality of the prefabricated substrates (1) are spliced ​​together to form a groove body network; The prefabricated cover plate (2) comprises a cover plate body (21) and a support foot (22), wherein the support foot (22) is perpendicular to the cover plate body (21) and one end of the support foot (22) is connected to the side end surface of the cover plate body (21), a tongue groove (211) is vertically provided on the top of the side end surface of the cover plate body (21), a plurality of the support feet (22) are provided and are arranged at intervals from each other, a plurality of the cover plate bodies (21) are covered on the groove body net and the side end surfaces are flush with the inner side wall of the assembly groove body (12), the other end of the support foot (22) extends into the assembly groove body (12), the length of the support foot (22) matches the groove depth of the assembly groove body (12) and the end thereof abuts against the groove bottom of the assembly groove body (12), and a plurality of pairs of coaxial corresponding tongue grooves (211) are correspondingly formed on two adjacent cover plate bodies (21), and steel bars (a) are inserted into the coaxial corresponding tongue grooves (211); The base plate body (11) has a plurality of joint edges (111), the assembly slot body (12) comprises slot body segments (121) corresponding to the plurality of joint edges (111) one by one, one end of the plurality of slot body segments (121) is vertically connected to the corresponding joint edges (111), and the other ends of the plurality of slot body segments (121) are intersecting and connected, the cover plate body (21) is in the shape of a regular polygon, and the side angle of the cover plate body (21) matches the angle of two adjacent slot body segments (121); The integral fixed connection is achieved by pouring concrete into the groove cavity formed between the plurality of the cover plate bodies (21) and inside the assembly groove body (12); the space between the outer side walls of the plurality of the assembly groove bodies (12) and between the base plate body (11) and the cover plate body (21) is a non-solid structure.

2. The assembled foundation according to claim 1, characterized in that: The other end of the trough body section (121) is provided with an ear plate (122), the ear plate (122) is vertically connected to the trough body section (121) and is flush with the side end surface of the cover plate body (21), and a first assembly hole (1221) is provided on the ear plate (122).

3. The assembled foundation according to claim 2, characterized in that: A communication opening (1222) is provided in the middle of the ear plate (122) for connecting the outer side surface of the ear plate (122) and the assembly slot body (12).

4. The fabricated foundation according to claim 1, characterized in that: A flange plate (123) is protrudingly provided on the top of the spliced ​​edge (111), and a second assembly hole (1231) is provided on the flange plate (123).

5. The assembled foundation according to claim 1, characterized in that: The side length of the cover plate body (21) is n times the side length of the slot body section (121), where n is an integer not less than 2.

6. The assembled foundation according to any one of claims 1 to 5, characterized in that: The support foot (22) is a steel bar support foot.

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