Fabricated raft foundation connected by pored inserting plates in grouting manner
The prefabricated raft foundation, which uses perforated insert plates for grouting connection, is assembled on-site with independently prefabricated bases and perforated inserts and then fixed with poured concrete. This solves the problem of poor connection stability in prefabricated foundations and achieves high connection stability and construction efficiency.
Patent Information
- Application Number
- CN202520096446.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Priority Date
- 2024-04-24
- Filing Date
- 2025-01-15
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-01-15
AI Technical Summary
Existing prefabricated foundations have poor connection stability and short service life in substations. They are particularly difficult to transport and hoist when there is a large demand, and the connection is prone to instability, making it difficult to guarantee construction efficiency.
The prefabricated raft foundation with perforated insert plates and grouting connection is assembled on site using independently prefabricated prefabricated bases and perforated inserts, and then fixed by pouring concrete. The perforated inserts provide limiting and tensile and shear resistance, and the assembly holes of the supports enable flexible installation and leveling.
It improves connection stability, has strong adaptability and high compatibility, solves the problem of poor connection stability, reduces transportation and construction difficulty, extends service life and improves construction efficiency.
Smart Images
Figure CN223893408U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of building foundation construction technology, specifically relating to a prefabricated raft foundation with perforated insert plate grouting connection. Background Technology
[0002] A foundation refers to the load-bearing structure of a building below ground level, such as a foundation pit, pile cap, 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 superstructure and transfer them, along with its own weight, to the ground. Since the foundation bears the entire load of the building, it must possess sufficient strength and meet durability requirements.
[0003] In related technologies, existing prefabricated foundations for supporting HGIS equipment in substations or related facilities typically include a main base buried underground and supports mounted on the base to support the equipment above. After being planned and prefabricated according to site drawings, these foundations are transported and hoisted to the site for installation.
[0004] When the required area for existing foundations is large, the main transformer foundation components are bulky and heavy, resulting in high transportation and on-site hoisting costs. This is especially true for renovation and expansion projects where site constraints prevent the use of excessively heavy cranes. Existing modular foundations, which typically use mortise and tenon joints, are limited by the manufacturing precision of the mortise and tenon structure. During long-term operation, this can lead to structural instability and connection failures, resulting in poor connection stability and a short service life. Utility Model Content
[0005] This utility model provides a prefabricated raft foundation with perforated insert plate grouting connection, which can solve the problems of poor connection stability and difficulty in guaranteeing the service life of prefabricated foundations during the assembly process in the prior art. The specific technical solution is as follows:
[0006] A prefabricated raft foundation with perforated insert plates and grouting connection includes multiple prefabricated bases.
[0007] The prefabricated base includes a base body and a hole connector. The base body has a top mounting surface and two splicing surfaces symmetrically arranged on both sides of the top mounting surface. The splicing surfaces are perpendicular to the top mounting surface. The top mounting surface is provided with multiple support assembly holes arranged in a rectangular array. The splicing surfaces are provided with insertion grooves, one end of which communicates with the top mounting surface. The base bodies of multiple prefabricated bases are spliced together through the splicing surfaces. The hole connectors are inserted into the spliced insertion grooves and are fixedly connected as a whole by pouring concrete.
[0008] Optionally, the insertion groove includes a bottom groove wall and two opposing side groove walls, and the distance between the two side groove walls gradually increases in the direction from the bottom groove wall to the opening of the insertion groove on the mating surface.
[0009] Optionally, the hole connector includes a plug-in portion and limiting portions disposed on both sides of the plug-in portion. Both the plug-in portion and the limiting portions are rectangular plates. The two limiting portions are arranged in parallel and spaced apart. The two sides of the plug-in portion are respectively perpendicularly connected to the two limiting portions.
[0010] Optionally, the plug portion is provided with multiple through holes.
[0011] Optionally, the insertion groove includes two parallel sidewalls, and the bottom of the insertion groove is provided with a limiting groove. The width of the limiting groove is greater than the width of the insertion groove. The hole connector includes an insertion part and limiting parts disposed on both sides of the insertion part. The insertion part matches the insertion groove, and the limiting parts match the limiting groove.
[0012] Optionally, both the insertion part and the limiting part are cylindrical, the diameter of the insertion part is smaller than that of the limiting part, the two limiting parts are arranged in parallel and spaced apart, the two ends of the insertion part are respectively perpendicularly connected to the two limiting parts, and multiple insertion parts are provided, which are arranged in parallel and spaced apart along the length direction of the limiting part.
[0013] Optionally, the base is rectangular and further includes two side connecting surfaces symmetrically arranged on the other two sides of the top mounting surface. A connecting groove is provided on the side connecting surface. The connecting groove includes a top wall and a bottom wall parallel to the top mounting surface, and a side wall perpendicular to the top mounting surface. A third assembly hole communicating with the splicing surface is provided on the side wall.
[0014] Optionally, a fourth mounting hole communicating with the bottom of the base is provided on the bottom wall.
[0015] Optionally, the base body is provided with a weight-reducing hole that connects the top mounting surface and the bottom.
[0016] Optionally, the hole connector is a steel structural component.
[0017] Compared with the prior art, the beneficial effects of the embodiments of this utility model include at least the following:
[0018] The prefabricated raft foundation with perforated insert plates and grouting connection provided in this embodiment of the invention includes multiple prefabricated bases that can be spliced together. The bases and corresponding auxiliary splicing perforated inserts in each base are independently prefabricated and assembled on-site to form a complete raft foundation structure. The overall volume of a single base structure is small, facilitating prefabrication, storage, and transportation. During connection, the independent bases buried underground are spliced together at the splicing surface. Perforated inserts are then inserted into the insertion grooves at the splicing points to form horizontal limiting and fixing, and the connection is secured by pouring concrete. The perforated inserts in the corresponding insertion grooves at the connection points internally play a role in shear resistance, tensile strength, and auxiliary bearing pressure, improving the connection stability. On the top mounting surface of the base, multiple support assembly holes are arranged in an array to achieve flexible installation with the upper support. It has strong adaptability and can be leveled with shims in the longitudinal direction to meet various angle requirements of the support top. This effectively solves the problem of poor connection stability and difficulty in guaranteeing the service life of prefabricated foundations after assembly in the existing technology. Attached Figure Description
[0019] Figure 1 A schematic diagram of a prefabricated raft foundation with perforated insert plate grouting connection provided for an embodiment of this utility model;
[0020] Figure 2 for Figure 1 A partial structural diagram of the splicing point of the prefabricated base;
[0021] Figure 3 This is a schematic diagram of the structure of a seat provided in an embodiment of the present utility model;
[0022] Figure 4 A schematic diagram of the structure of a hole-plug connector provided in an embodiment of this utility model;
[0023] Figure 5 This is a schematic diagram of another type of base provided in an embodiment of the present utility model;
[0024] Figure 6 This is a schematic diagram of another type of seat provided in an embodiment of the present utility model;
[0025] Figure 7 A schematic diagram of another hole-plug connector provided in an embodiment of this utility model;
[0026] Figure 8 for Figure 6 and Figure 7 A partial structural diagram of the mating of the central hole connector and the base.
[0027] In the diagram: 1-Assembled base; 1a-Top mounting surface; 11-Base; 11a-Top mounting surface; 11b-Matching surface; 11c-Side connecting surface; 12-Hole connector; 111-Support assembly hole; 112-Insertion groove; 113-Connecting groove; 114-Weight reduction hole; 121-Insertion part; 122-Limiting part; 1121-Bottom groove wall; 1122-Side groove wall; 1123-Limiting groove; 1131-Top wall; 1132-Bottom wall; 1133-Side wall; 1134-Third assembly hole; 1135-Fourth assembly hole; 1211-Through hole. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the present utility model, and not all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0029] In related technologies, existing prefabricated foundations in substations or related facilities typically consist of a main base buried underground and supports mounted on the base to support the equipment above. After being planned and prefabricated according to site drawings, they are transported and hoisted to the site for installation.
[0030] When the required area for existing foundations is large, the bulky and heavy components of the main transformer foundation lead to high costs for transportation and on-site hoisting, especially in renovation and expansion projects where site constraints prevent the use of excessively heavy cranes. Existing modular foundations, typically using mortise and tenon joints, are limited by the manufacturing precision of the mortise and tenon joints, making them prone to structural instability and connection failures during long-term operation. Furthermore, ensuring the overall flatness of the base and support surfaces after assembly is difficult. If flatness deviations exist after installation, manual leveling with self-leveling tools is required, which is time-consuming, labor-intensive, and impacts construction efficiency.
[0031] Figure 1 A schematic diagram of a prefabricated raft foundation with perforated insert plate grouting connection provided for an embodiment of this utility model; Figure 2 for Figure 1 A partial structural diagram of the splicing point of the prefabricated base; Figure 3 This is a schematic diagram of the structure of a seat provided in an embodiment of the present utility model; Figure 4 A schematic diagram of the structure of a hole-plug connector provided in an embodiment of this utility model; Figure 5 This is a schematic diagram of another type of base provided in an embodiment of the present utility model; Figure 6This is a schematic diagram of another type of seat provided in an embodiment of the present utility model; Figure 7 A schematic diagram of another hole-plug connector provided in an embodiment of this utility model; Figure 8 for Figure 6 and Figure 7 A partial structural diagram showing the mating of the central-hole connector with the base. (See attached diagram.) Figures 1 to 8 As shown, this utility model embodiment provides an assembled raft foundation with perforated insert plate grouting connection, including multiple assembled bases 1.
[0032] The prefabricated base 1 includes a base body 11 and a hole-plug connector 12. The base body 11 has a top mounting surface 11a and two symmetrically arranged splicing surfaces 11b on both sides of the top mounting surface 11a, with the splicing surfaces 11b perpendicular to the top mounting surface 11a. Multiple support mounting holes 111 are provided on the top mounting surface 11a, arranged in a rectangular array. Insertion grooves 112 are provided on the splicing surfaces 11b, with one end of the insertion grooves 112 communicating with the top mounting surface 11a. The base bodies 11 of multiple prefabricated bases 1 are spliced together through the splicing surfaces 11b, and the hole-plug connectors 12 are inserted into the spliced insertion grooves 112, and the entire assembly is fixedly connected by pouring concrete.
[0033] In this embodiment of the invention, the prefabricated raft foundation with perforated insert plate grouting connection includes multiple prefabricated bases 1 for integrally burying in the underground foundation pit. Each prefabricated base 1 includes a seat body 11 and corresponding perforated connectors 12. Multiple seat bodies 11 are prefabricated independently and assembled on-site to form a complete raft foundation. The overall volume of a single seat body 11 is small, facilitating prefabrication, storage, and transportation. The seat body 11 is generally rectangular in shape, with two opposing mating surfaces 11b in the mating direction. Multiple insertion slots 112 are spaced apart along the horizontal extension direction of the mating surfaces 11b. The bottom of each insertion slot 112 extends to the middle of the mating surface 11b, and its top communicates with the top mounting surface 11a of the seat body 11 to form an opening. During assembly, adjacent seat bodies 11 are joined together via mating surfaces 11b. The insertion slots 112 on the two adjacent mating surfaces 11b are aligned through openings on the mating surfaces 11b, and the openings on the top mounting surface 11a of the two insertion slots 112 are also aligned to form an opening structure. The hole-type connector 12 is inserted into the mating insertion slots 112 through this opening structure, thereby providing horizontal positioning, fixation, and shear protection for the two adjacent seat bodies 11. Afterwards, the inserted slots 112 are sealed by injecting grout, such as concrete, to fully fill the insertion slots 112 and the internal hole-type connector 12, thus forming a fixed connection between the two adjacent seat bodies 11. The top mounting surface 11a of the base 11 is provided with an array of multiple support mounting holes 111. These support mounting holes 111 can be bolt holes or pin holes, used for support structures that are partially buried underground and topped on the ground after the prefabricated base 1 is installed. The position of the support on the prefabricated base 1 can be freely selected according to the actual support requirements of the top equipment. It can be on a single base 11 or between the connection points of two adjacent bases 11, offering high adaptability. Furthermore, since the connection is longitudinally positioned, shims can be fitted onto the bolts or positioning pins inserted into the longitudinal support mounting holes 111 to fill any assembly gaps between the upper support and the top mounting surface 11a, or to meet the angle requirements of the support top support surface, providing an adaptive leveling function.
[0034] The prefabricated raft foundation with perforated insert plate grouting connection provided in this embodiment of the invention includes multiple prefabricated bases 1 that can be spliced together. The seat body 11 and the perforated insert member 12 in each prefabricated base 1 are independently prefabricated and assembled on-site to form a complete raft foundation structure. The overall volume of a single seat body 11 structure is small, facilitating prefabrication, storage, and transportation. During connection, the independent seat bodies 11 buried underground are spliced together through the splicing surface 11b. A horizontal limiting and fixing effect is achieved by inserting the perforated insert member 12 into the insertion groove 112 at the splicing point, and the connection is fixed by pouring concrete. The perforated insert member 12 in the corresponding insertion groove 112 at the connection point plays an internal role in shear resistance, tensile strength, and auxiliary bearing pressure, improving the connection stability. On the top mounting surface 11a of the base 11, multiple support assembly holes 111 are arranged in an array to achieve flexible assembly with the upper support, which has strong adaptability. At the same time, it can be leveled in the longitudinal direction with the help of shims to meet various angle requirements of the top of the support. This effectively solves the problem of poor connection stability and difficulty in guaranteeing the service life of prefabricated foundations after assembly in the existing technology.
[0035] Optionally, in this embodiment of the invention, the insertion groove 112 includes a bottom groove wall 1121 and two opposing side groove walls 1122. The distance between the two side groove walls 1122 gradually increases in the direction extending from the bottom groove wall 1121 towards the opening of the insertion groove 112 on the mating surface 11b. For example, refer to... Figures 1 to 4 In one possible implementation of this utility model, the size of the slot 112 gradually increases from the inside to the outside, and the opening contour on the top mounting surface 11a is an isosceles trapezoid. This slotting design facilitates demolding during manufacturing, effectively improving production efficiency. Furthermore, after assembly, the two slots 112, when joined together, provide greater insertion space for the connector 12, facilitating construction. Moreover, the poured concrete allows for more thorough contact and engagement with the side walls 1122 of the slot 112, enhancing structural stability.
[0036] Optionally, the hole connector 12 includes a plug-in portion 121 and limiting portions 122 disposed on both sides of the plug-in portion 121. Both the plug-in portion 121 and the limiting portions 122 are rectangular plates, and the two limiting portions 122 are arranged in parallel and spaced apart. The two sides of the plug-in portion 121 are perpendicularly connected to the two limiting portions 122 respectively. Exemplarily, in one implementation of this utility model, the plug-in portion 121 is in the form of a plug plate. The plug-in portion 121 is a transverse plate structure with a length equal to twice the groove depth of the plug groove 112. The limiting portions 122 on both sides are longitudinal plate structures perpendicularly connected to the two sides of the transverse plate. The length of the longitudinal plate structure is slightly less than the minimum distance between the two groove walls 1122. After the hole connector 12, which is in the form of an "I" shaped plug plate, is inserted, the limiting portions 122 at both ends can abut against the front end of the bottom groove wall 1121 of the two groove walls 1122 to achieve pre-positioning, which facilitates the smooth insertion of the hole connector 12. Furthermore, multiple through holes 1211 can be arranged in an array at a certain interval on the transverse plate of the insertion part 121, so that after the concrete is poured, the concrete can fully contact the insertion part and the inner wall of the insertion groove 112 and the limiting groove 1123 on both sides, increase the concrete bonding area, and further improve the structural integrity and cooperative stress resistance of the connection between the two seats 11.
[0037] Optionally, the insertion groove 112 includes two parallel sidewalls 1122. A limiting groove 1123 is provided at the bottom of the insertion groove 112, the width of which is greater than the width of the insertion groove 112. The hole-plug connector 12 includes an insertion portion 121 and limiting portions 122 disposed on both sides of the insertion portion 121. The insertion portion 121 matches the insertion groove 112, and the limiting portions 122 match the limiting groove 1123. For example, refer to... Figure 5 and Figure 6 In another implementation of this utility model, a limiting groove 1123 with a contour groove diameter larger than the width of the insertion groove 112 is provided at the bottom of the insertion groove 112 in a direction perpendicular to the top mounting surface 11a. After two adjacent bases 11 are assembled, the two inserted grooves 112 and their respective limiting grooves 1123 together form an "I"-shaped opening. When the hole-plug 12 is inserted through this opening, the two ends of the hole-plug 12, which match the contours of the insertion groove 112 and the limiting groove 1123, can form a limiting position in a direction perpendicular to the splicing surface 11b. This prevents the two adjacent bases 11 from separating due to the lack of limiting position after insertion, thus creating an assembly gap and further improving the connection stability of the assembled base 1.
[0038] For example, in this embodiment of the present invention, when the base 11 is prefabricated, under the premise of avoiding the insertion groove 112 and the support assembly hole 111, steel bars can also be embedded in the base 11 in the horizontal direction and in the direction perpendicular to the splicing surface 11b or the side groove wall 1122 to improve the overall mechanical strength and compressive strength of the assembled base 1.
[0039] Optionally, both the insertion portion 121 and the limiting portion 122 are cylindrical. The diameter of the insertion portion 121 is smaller than that of the limiting portion 122. The two limiting portions 122 are arranged in parallel and spaced apart. The two ends of the insertion portion 121 are perpendicularly connected to the two limiting portions 122 respectively. Multiple insertion portions 121 are provided, and the multiple insertion portions 121 are arranged in parallel and spaced apart along the length direction of the limiting portion 122. For example, refer to Figure 7 and Figure 8 In the embodiment of the aforementioned insertion groove 112 structure, the hole insertion member 12 is a steel mesh structure formed by welding together multiple cylindrical steel bars. Correspondingly, the contour of the limiting groove 1123, which matches the cylindrical limiting part 122, is also cylindrical. The insertion parts 121, arranged parallel and spaced between the two limiting parts 122, use steel bars with smaller diameters. While replacing the plate-like form, they can also be embedded into the assembled insertion groove 112. Simultaneously, multiple insertion parts 121 form a mesh-like hollow structure. Using cylindrical insertion parts 121 and limiting parts 122 achieves the same limiting effect while reducing weight, further reducing the manufacturing difficulty and cost of the hole insertion member. At the same time, after concrete is poured, the concrete can fully contact the hole insertion member with the inner walls of the insertion grooves 112 and limiting grooves 1123 on both sides, increasing the concrete bonding area and further improving the structural integrity and coordinated stress resistance at the connection between the two bases 11.
[0040] For example, in the embodiment of the aforementioned insertion slot 112 structure, the hole insertion member 12 can also adopt the "I" shaped structure in the first implementation.
[0041] Optionally, the base 11 is cuboid and includes two side connecting surfaces 11c symmetrically arranged on the other two sides of the top mounting surface 11a. A connecting groove 113 is provided on the side connecting surface 11c. The connecting groove 113 includes a top wall 1131 and a bottom wall 1132 parallel to the top mounting surface 11a, and a side wall 1133 perpendicular to the top mounting surface 11a. A third assembly hole 1134 communicating with the splicing surface 11b is provided on the side wall 1133. Exemplarily, in this embodiment of the invention, the base 11 also has side connecting surfaces 11c on both sides in the splicing direction. After being aligned via the splicing surface 11b, the third assembly holes 1134 on adjacent bases 11 are coaxially aligned. At this time, bolts can be inserted into the third assembly holes 1134 to achieve bolted connection in the direction perpendicular to the splicing surface 11b. This achieves pre-fixed connection before casting and multi-point connection between bases 11 after casting, further improving the overall connection stability of the prefabricated base 1.
[0042] Optionally, a fourth mounting hole 1135 communicating with the bottom of the seat 11 is provided on the bottom wall 1132. Exemplarily, in this embodiment of the invention, since the flatness of the bottom of the pit is difficult to guarantee, multiple seats 11 may have uneven flatness during the assembly process, resulting in imperfect alignment and the third mounting hole 1134 not being accurately aligned. In this case, by providing a fourth mounting hole 1135 communicating with the bottom on the bottom wall 1132 of the connecting groove 113, bolts can be inserted, and a shim structure can be set at the bottom to adjust the height between the bottom of the seat 11 and the pit floor, thus achieving leveling between the seats 11 and further improving the splicing accuracy and the flatness of the top mounting surface 11a.
[0043] Optionally, the base 11 has a weight-reducing hole 114 connecting the top mounting surface 11a and the bottom. Exemplarily, in one possible implementation of this utility model embodiment, by opening an additional weight-reducing hole 114 at a position on the top mounting surface 11a where no support assembly hole 111 is provided, the overall weight of the base 11 can be reduced, manufacturing costs can be reduced, and transportation and installation can be facilitated.
[0044] Optionally, the hole-plug connector 12 is a steel structural component. Exemplarily, in this embodiment of the invention, the various types of hole-plug connectors 12 described above are all made of steel, utilizing its high mechanical strength to compensate for the lower tensile, compressive, bending, shear, and crack resistance of concrete foundation structures. Simultaneously, it possesses excellent corrosion resistance and is easy to process, effectively improving the overall service life of the prefabricated raft foundation with perforated insert grouting connection.
[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A prefabricated raft foundation with perforated insert plate grouting connection, characterized in that, include: Multiple assembled bases (1), The prefabricated base (1) includes a base body (11) and a hole connector (12). The base body (11) has a top mounting surface (11a) and two splicing surfaces (11b) symmetrically arranged on both sides of the top mounting surface (11a). The splicing surfaces (11b) are perpendicular to the top mounting surface (11a). The top mounting surface (11a) is provided with a plurality of support assembly holes (111). The plurality of support assembly holes (111) are arranged in a rectangular array. The splicing surfaces (11b) are provided with a plug groove (112). One end of the plug groove (112) is connected to the top mounting surface (11a). The base bodies (11) of the plurality of prefabricated bases (1) are spliced together through the splicing surfaces (11b). The hole connector (12) is inserted into the spliced plug groove (112) and is fixedly connected as a whole by pouring concrete.
2. The prefabricated raft foundation with perforated insert plate grouting connection according to claim 1, characterized in that, The insertion groove (112) includes a bottom groove wall (1121) and two opposing side groove walls (1122). The distance between the two side groove walls (1122) gradually increases in the direction from the bottom groove wall (1121) to the opening of the insertion groove (112) on the mating surface (11b).
3. The prefabricated raft foundation with perforated insert plate grouting connection according to claim 2, characterized in that, The hole connector (12) includes a plug-in portion (121) and limiting portions (122) disposed on both sides of the plug-in portion (121). Both the plug-in portion (121) and the limiting portions (122) are rectangular plates. The two limiting portions (122) are arranged in parallel and spaced apart. The two sides of the plug-in portion (121) are perpendicularly connected to the two limiting portions (122) respectively.
4. The prefabricated raft foundation with perforated insert plate grouting connection according to claim 3, characterized in that, The plug-in portion (121) is provided with a plurality of through holes (1211).
5. The prefabricated raft foundation with perforated insert plate grouting connection according to claim 1, characterized in that, The insertion groove (112) includes two parallel side groove walls (1122). The bottom of the insertion groove (112) is provided with a limiting groove (1123). The width of the limiting groove (1123) is greater than the width of the insertion groove (112). The hole plug-in component (12) includes an insertion part (121) and limiting parts (122) provided on both sides of the insertion part (121). The insertion part (121) matches the insertion groove (112), and the limiting part (122) matches the limiting groove (1123).
6. The prefabricated raft foundation with perforated insert plate grouting connection according to claim 5, characterized in that, Both the insertion part (121) and the limiting part (122) are cylindrical. The diameter of the insertion part (121) is smaller than that of the limiting part (122). The two limiting parts (122) are arranged in parallel and spaced apart. The two ends of the insertion part (121) are respectively perpendicularly connected to the two limiting parts (122). Multiple insertion parts (121) are provided, and the multiple insertion parts (121) are arranged in parallel and spaced apart along the length direction of the limiting part (122).
7. The prefabricated raft foundation with perforated insert plate grouting connection according to any one of claims 1 to 6, characterized in that, The base (11) is cuboid and includes two side connecting surfaces (11c) symmetrically arranged on the other two sides of the top mounting surface (11a). The side connecting surfaces (11c) are provided with connecting grooves (113). The connecting grooves (113) include a top wall (1131) and a bottom wall (1132) parallel to the top mounting surface (11a), and a side wall (1133) perpendicular to the top mounting surface (11a). The side wall (1133) is provided with a third assembly hole (1134) communicating with the splicing surface (11b).
8. The prefabricated raft foundation with perforated insert plate grouting connection according to claim 7, characterized in that, The bottom wall (1132) is provided with a fourth assembly hole (1135) that connects to the bottom of the base (11).
9. The prefabricated raft foundation with perforated insert plate grouting connection according to claim 7, characterized in that, The base (11) has a weight-reducing hole (114) that connects the top mounting surface (11a) and the bottom.
10. The prefabricated raft foundation with perforated insert plate grouting connection according to any one of claims 1 to 6, characterized in that, The hole connector (12) is a steel structural component.