An assembled shrinkage foundation

Abstract

The present invention relates to the technical field of building foundation construction, and mainly provides an assembled shrinking 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, a top support platform and a support foot. The top support platform is protruding from the middle of the cover plate body, one end of the support foot is connected to the side end face of the cover plate body, and the plurality of cover plate bodies are covered on the groove body network and the side end faces are 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 an assembled shrinking foundation with a cover 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 in particular relates to an assembled shrinkage 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, and maintenance operations, with 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 shrinkage 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 assembled foundation in the related art also needs to be prefabricated accordingly after determining the on-site equipment layout plan, and finally transported to the site for splicing and assembly, which takes up a long construction period. Summary of the invention

[0005] The embodiment of the present invention provides an assembled shrinkage 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 shrinkage 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, a top support platform 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, the top support platform is protruding from the middle of the cover plate body, the side end surface of the top support platform is parallel to the side end surface of the cover plate body and is arranged at intervals, 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, anchoring steel bars are arranged on the side end surface of the top support platform, the anchoring steel bars are parallel to the cover plate body, and a plurality of the anchoring steel bars are arranged at intervals from each other.

[0010] Optionally, a plurality of support foot groups are arranged on the side end surface of the cover body, and the support foot group includes at least two support feet that are fitted to each other.

[0011] Optionally, the base plate body has four joint edges, the assembly slot body includes slot body segments corresponding to the four joint edges one by one, one end of the four slot body segments is vertically connected to the corresponding joint edges, and the other ends of the four slot body segments are intersected and connected.

[0012] The other end of the trough body section is provided with an ear plate, 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 the ear plate is provided with a first assembly hole.

[0013] 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.

[0014] Optionally, a flange plate is protruding from the top of the spliced ​​edge, and a second assembly hole is provided on the flange plate.

[0015] 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.

[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 shrinkage foundation provided by the embodiment of the present invention adopts a structure of a combination of a bottom prefabricated substrate and a plurality of top prefabricated cover plates, the substrate bodies are spliced ​​together to form a base layer, and a plurality of assembly slots are spliced ​​together to form a slot body net to support and position the upper cover plate body accordingly, and finally, concrete is poured into the slot cavity formed between the plurality of cover plate bodies in the assembly slot body for overall fixed connection, and the support leg structure on the side of the cover plate body can simultaneously play the role of installation positioning, and play the role of tensile and compressive stress at the assembly joint after pouring. At the same time, the plurality of cover plate bodies and the top support platform protruding above each form a step lock edge structure, and after the poured concrete is leveled with the upper surface of the top support platform, the concrete bonding area between the adjacent prefabricated cover plates is further increased, forming a multi-directional constraint, the overall bonding reliability is high, the coordinated force bearing is good, and the structural performance of the foundation can be guaranteed, and the prefabricated substrate and the prefabricated cover plate can be prefabricated separately, which can improve the prefabrication production efficiency, reduce the production cost, and also facilitate the transportation, storage and on-site construction of prefabricated parts. While ensuring the assembly operation efficiency, the overall structural reliability and service life can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic structural diagram of an assembled shrinkage 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 diagram of a partial structure of another prefabricated cover plate provided in an embodiment of the present invention;

[0023] Figure 4 A schematic structural diagram of a prefabricated cover plate provided in an embodiment of the present invention;

[0024] Figure 5 for Figure 4 A schematic diagram of the front view structure of

[0025] Figure 6 A schematic structural diagram of another prefabricated cover plate 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-top support platform; 221-anchor steel bar; 23-support foot; 23a-support foot group; 111-joined edge; 121-trough body section; 122-ear plate; 123-flange plate; 1221-first assembly hole; 1222-connecting port; 1231-second assembly hole. 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. The traditional foundations usually include cast-in-place concrete foundations and prefabricated shrinkage 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 shrinkage 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 shrinkage 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, etc., and it is easy to cause structural instability and connection failure between the strip foundation and the raft during long-term operation.

[0030] Figure 1 A schematic structural diagram of an assembled shrinkage 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 diagram of a partial structure of another prefabricated cover plate provided in an embodiment of the present invention; Figure 4 A schematic structural diagram of a prefabricated cover plate provided in an embodiment of the present invention; Figure 5 for Figure 4 A schematic diagram of the front view structure of Figure 6 A schematic diagram of the structure of another prefabricated cover plate provided in an embodiment of the present invention. Figures 1 to 6 As shown, an embodiment of the present invention provides an assembled shrinkage 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. A plurality of prefabricated substrates 1 are spliced ​​together through the substrate body 11 to form a base layer, and the assembly grooves 12 on the plurality of prefabricated substrates 1 are spliced ​​together to form a groove network.

[0032] The prefabricated cover plate 2 includes a cover plate body 21, a top support platform 22 and a support foot 23. The support foot 23 is perpendicular to the cover plate body 21 and one end is connected to the side end surface of the cover plate body 21. The top support platform 22 is convexly arranged in the middle of the cover plate body 21, and the side end surface of the top support platform 22 is arranged parallel to the side end surface of the cover plate body 21. There are multiple support feet 23 and they are arranged at intervals from each other. Multiple cover plate bodies 21 are covered on the trough net and the side end surfaces are flush with the inner side wall of the assembly trough body 12, and the other end of the support foot 23 extends into the assembly trough body 12.

[0033] In an embodiment of the present invention, the assembled shrinkage 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 ​​with each other, the assembly grooves 12 on the plurality of prefabricated substrates 1 are also spliced ​​with each other 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 being placed 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 23, 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 23 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 23 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 part thereof extends 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 slot 12, that is, the top of the two side slot 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 slot 12 to jointly form a side wall of the slot cavity, and the side end surface of the assembly slot 12 and the cover plate body 21 located above the two side walls jointly define the slot cavity for casting. A top support platform 22 is also protrudingly provided on the top of the cover plate body 21, and the upper plane of the top support platform 22 serves as the load-bearing surface of the assembled shrinkage foundation. The outer contour of the top support platform 22 is consistent with the cover plate body 21, and its side end surface is arranged parallel to the side end surface of the cover plate body 21 and spaced apart to form a stepped shrinkage structure. By pouring concrete into the groove cavity to fill it, first fill the support feet 23 until they are flush with the upper surfaces of the multiple cover plate bodies 21, and then continue pouring to fill the gaps between adjacent top support platforms 22 and level them with the upper plane of the top support platforms 22, so as to fix and connect the multiple prefabricated base plates 1 and the multiple prefabricated cover plates 2 as a whole, and complete the assembly construction of the prefabricated shrinkage foundation.

[0034] The assembled shrinkage foundation provided by the embodiment of the present invention adopts a structure composed of a bottom prefabricated base plate 1 and multiple prefabricated cover plates 2 on the top. The base layer is formed by splicing the base plate bodies 11 together, and multiple assembly grooves 12 are spliced ​​together to form a groove network to support and position the upper cover plate body 21 accordingly. Finally, concrete is poured into the groove cavity formed between the multiple cover plate bodies 21 in the assembly groove body 12 to fix the whole body in place. The support foot 23 structure on the side of the cover plate body 21 can simultaneously play the role of installation positioning, and play the role of resisting tension and bearing compressive stress at the assembly joint after pouring. At the same time, multiple cover plate bodies 21 and the top support platform 22 protruding above each form a step lock structure. After the poured concrete is leveled with the upper surface of the top support platform 22, the concrete bonding area between adjacent prefabricated cover plates 2 is further increased, forming a multi-directional constraint, with high overall bonding reliability and good coordinated force bearing capacity, which can ensure the structural performance of the foundation. The prefabricated base plate 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 assembly efficiency, it can improve the overall structural reliability and service life.

[0035] 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 shrinkage foundation, the amount of concrete used for pouring can be effectively saved.

[0036] 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.

[0037] Optionally, anchoring steel bars 221 are arranged on the side end surface of the top support platform 22, and the anchoring steel bars 221 are parallel to the cover plate body 21, and a plurality of anchoring steel bars 221 are arranged and spaced apart from each other. For example, in the 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 top support platform 22 to achieve a fixed connection between the prefabricated cover plates 2, by arranging anchoring steel bars 221 on the side end surface of the top support platform 22, when the poured concrete is flush with the upper surface of the top support platform 22, the anchoring steel bars 221 on the side 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 horizontally placed anchoring steel bars 221 further improve the rigidity and mechanical strength between the bonding positions, and after being filled with concrete, they can also play a role in shear resistance and pressure bearing inside, further improving the overall structural stability of the assembled shrinkage foundation.

[0038] Optionally, a plurality of support leg groups 23a are provided on the side end surface of the cover plate body 21, and the support leg group 23a includes at least two support legs 23 that fit each other. Exemplarily, in the embodiment of the present invention, the support legs 23 extending into the assembly slot 12 are arranged into a structure of a plurality of support leg groups 23a in pairs by changing their spacing, and the two support legs 23 in each support leg group 23a can abut against each other for support and support, and jointly bear the possible stress, thereby further improving the overall structural stability and service life of the assembled shrinkage foundation.

[0039] Optionally, the base plate body 11 has four joint edges 111, and the assembly slot body 12 includes slot body segments 121 corresponding to the four joint edges 111, one end of the four slot body segments 121 is vertically connected to the corresponding joint edges 111, and the other ends of the four slot body segments 121 are intersecting and connected. Exemplarily, in the embodiment of the present invention, each prefabricated base plate 1 and prefabricated cover plate 2 adopts corresponding structures and specifications to achieve standardized and large-scale production. Figures 1 to 3 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 position to form a grid structure in a square slot net. Correspondingly, the cover body 21 correspondingly installed on this slot net is a square that matches the grid structure, that is, the four cover edges of a cover body 21 correspond to the slot sections 121 of the four assembly slots 12 and are connected across them.

[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, which connects the outer side surface of the ear plate 122 and the assembly groove 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 groove bodies 12 to form a continuous assembly groove. After pouring concrete, the concrete in the groove body net can be formed into a continuous grid beam, which effectively improves the structural integrity of the assembled shrinkage 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, the side length of the cover plate body 21 is n times that of the slot body segment 121, where n is an integer not less than 2. Exemplarily, in an embodiment of the present invention, the side length of the cover plate body 21 is twice that of the slot body segment 121, that is, the cover plate edge of each cover plate body 21 is respectively connected across two corresponding slot body segments 121.

[0044] Optionally, the length of the support leg 23 matches the groove depth of the assembly groove body 12. Exemplarily, in the embodiment of the present invention, after the cover plate body 21 is installed, the end of the support leg 23 extending downward along the inner wall of the assembly groove body 12 will be in contact with the groove bottom of the assembly groove body 12 through pre-design, which can improve the load bearing capacity of the cover plate layer, and the support leg 23 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 shrinkage 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 shrinkage 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), a top support platform (22) and a support foot (23); the support foot (23) is perpendicular to the cover plate body (21) and one end of the support foot (23) is connected to the side end surface of the cover plate body (21); the top support platform (22) is protruding from the middle of the cover plate body (21); the side end surface of the top support platform (22) is parallel to the side end surface of the cover plate body (21) and is arranged at intervals; the support foot (23) is provided with a plurality of mutually opposite The cover plate bodies (21) are arranged at intervals from each other, the cover plate bodies (21) are covered on the groove body net and the side end faces are flush with the inner side walls of the assembly groove body (12), the other ends of the support feet (23) extend into the assembly groove body (12), the length of the support feet (23) matches the groove depth of the assembly groove body (12) and the ends abut against the groove bottom of the assembly groove body (12), and the side end faces of the cover plate bodies (21) are provided with a plurality of support foot groups (23a), the support foot groups (23a) comprises at least two mutually fitted supporting feet (23) to realize the installation and positioning of the cover plate body (21) and improve the load bearing capacity; the side end surface of the top support platform (22) is provided with anchoring steel bars (221); the anchoring steel bars (221) are parallel to the cover plate body (21); a plurality of anchoring steel bars (221) are provided and are arranged at intervals; the inner side wall of each assembly groove body (12) and the side end surface of the cover plate body (21) jointly form a groove cavity; concrete is poured in the groove cavity and is leveled with the upper surface of the top support platform (22); concrete is poured into the groove cavity formed between the plurality of cover plate bodies (21) in the assembly groove body (12) to achieve an integral fixed connection; the outer side walls of the assembly groove body (12), the outer side walls of the assembly groove body (12), and the base plate body (11) and the cover plate body (21) are non-solid structures.

2. The assembled shrinkage foundation according to claim 1, characterized in that: The base plate body (11) has four joint edges (111), the assembly slot body (12) comprises slot body segments (121) corresponding to the four joint edges (111) one by one, one end of the four slot body segments (121) being vertically connected to the corresponding joint edges (111), and the other ends of the four slot body segments (121) being intersecting and connected.

3. The assembled shrinkage foundation according to claim 2, 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).

4. The assembled shrinkage foundation according to claim 3 is 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).

5. The assembled shrinkage foundation according to claim 2, 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).

6. The assembled shrinkage foundation according to claim 2, 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.

7. The assembled shrinkage foundation according to any one of claims 1 to 5, characterized in that: The support foot (23) is a steel bar support foot.

Images