Fragmented prefabricated tower foundation device and mounting method

Abstract

The invention discloses a fragmented prefabricated tower foundation device and an installation method, and relates to the technical field of wind turbine supporting structures.The fragmented prefabricated tower foundation device comprises a center column, lateral supporting parts located in the circumferential direction of the center column, a bottom plate located at the bottom of the center column and a switching section located at the top of the center column; the extending direction of the lateral supporting part and the center column are arranged at an angle, the lateral supporting part comprises a first connecting end away from the center column and a second connecting end away from the first connecting end, a first connecting structure is arranged between the center column and the bottom plate, and a second connecting structure is arranged between the bottom plate and the first connecting end. The center column is connected with the second connecting end through a switching section, the switching section is used for being connected with a wind power tower, the center column and the wind power tower are coaxially arranged, the bottom plate comprises a plurality of prefabricated bottom plate pieces, and third connecting structures are arranged on the opposite sides of the adjacent prefabricated bottom plate pieces. The top elevation of the tower foundation device can be effectively improved, and the consistency and stability of the quality of the bottom plate are guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of wind turbine support structures, and in particular to a segmented prefabricated tower foundation device and an installation method. Background Art

[0002] Currently, the vast majority of onshore wind turbine support structures utilize cast-in-place gravity foundations. This type of foundation consists of a slab below the ground, anchors inserted into the foundation, and a foundation flange. The slab below the ground is typically cast on-site from reinforced concrete and connected to the foundation via anchors. The tower structure to be supported is supported on this slab via a foundation flange. This type of foundation requires excavation and backfilling before and after construction. The amount of concrete, steel, anchors, foundation, and backfill required for this type of foundation depends on the external loads acting on the support structure or tower, as well as the size of the support structure or tower.

[0003] In some application scenarios, especially when applied to large-capacity wind turbines, high-load, and large-size wind power tower structures, cast-in-place gravity foundations have defects and / or shortcomings. The first is the large amount of engineering work and high cost. When installing large-capacity wind turbines, the foundation will be subjected to greater overturning moments and shear forces. This type of foundation needs to increase in volume and weight to provide sufficient bearing capacity, which will lead to an increase in the amount of steel bars, concrete, and anchor rods, as well as an increase in the amount of foundation excavation and backfilling. Secondly, the top elevation of this type of foundation is relatively low, which will cause the connection between the foundation and the tower structure to be subjected to greater torque, and it is necessary to increase the diameter and / or span of the tower and foundation to provide sufficient resistance to this torque. The increase in the diameter and / or span of the tower and foundation will not only lead to an increase in material consumption and engineering costs, but will also face restrictions on transportation conditions. Furthermore, these foundations are subject to the risk of construction defects. Large-volume reinforced concrete is prone to uneven pouring, voids, cracks, and other defects during construction and maintenance. The quality of these foundations is affected by the construction site environment, construction techniques, and the technical proficiency of the construction personnel. Quality standards vary across different sites, posing a risk of construction defects. Furthermore, because these foundations are cast in situ, they have a long construction period, a complex process, and are more sensitive to weather conditions.

[0004] Therefore, how to provide a segmented prefabricated tower foundation device and installation method that can at least partially improve the above-mentioned disadvantages is a technical problem that those skilled in the art currently need to solve. Summary of the Invention

[0005] The purpose of the present invention is to provide a segmented prefabricated tower foundation device and installation method, which can provide the tower foundation device with anti-overturning ability, maintain the bearing performance and stability of the tower foundation device, effectively improve the top elevation of the tower foundation device, thereby reducing the torque at the connection between the wind tower and the foundation, and then reducing the size of the tower structure and the amount of material used. It can ensure the consistency and stability of the quality of the prefabricated bottom plate pieces, so as to carry out rapid and standardized assembly of the bottom plate, and can simplify the wind tower foundation construction process and increase the construction speed.

[0006] To achieve the above-mentioned objectives, the present invention provides a segmented prefabricated tower foundation device, comprising a central column, lateral support components located in the circumferential direction of the central column, a base plate located at the bottom of the central column, and a transition section located at the top of the central column. The extension direction of the lateral support components is set at an angle to the central column, and the lateral support components include a first connection end away from the central column and a second connection end away from the first connection end. A first connection structure is provided between the central column and the base plate, a second connection structure is provided between the base plate and the first connection end, the central column and the second connection end are connected by a transition section, and the transition section is used to connect to the wind tower so that the central column and the wind tower are coaxially arranged, and the base plate includes a plurality of prefabricated base plate pieces, and a third connection structure is provided on the side facing each other of adjacent prefabricated base plate pieces.

[0007] In one possible implementation, the first connection structure includes:

[0008] A first rib connected to the central column and protruding from the central column toward the bottom plate;

[0009] a second rib connected to the bottom plate and protruding from the bottom plate toward the central column, the second rib being used to connect to the first rib;

[0010] The first casting material is poured into the gap between the central column and the bottom plate to seal the second ribs and the first ribs, so that the central column and the bottom plate are fixedly connected.

[0011] In one possible implementation, the second connection structure includes:

[0012] a third rib connected to the bottom plate and protruding from the bottom plate toward the first connection end;

[0013] a fourth rib connected to the first connecting end and protruding from the first connecting end toward the bottom plate, the fourth rib being used to connect to the third rib;

[0014] The second casting material is cast into the gap between the bottom plate and the first connecting end to seal the third rib and the fourth rib, so that the bottom plate and the first connecting end are fixedly connected.

[0015] In one possible implementation, the second connection structure includes:

[0016] A reserved bolt column is connected to the bottom plate and protrudes from the bottom plate toward the first connection end;

[0017] The flange is connected to the side of the first connecting end facing the base plate, and the flange is connected in cooperation with the reserved bolt column to fix the base plate and the first connecting end in connection.

[0018] In one possible implementation, the third connection structure includes:

[0019] a fifth rib connected to the prefabricated bottom plate and protruding from a side of the prefabricated bottom plate facing the adjacent prefabricated bottom plate, wherein the fifth ribs on the opposite sides of the adjacent prefabricated bottom plates are connected;

[0020] The third casting material is poured into the gap between adjacent prefabricated bottom plate pieces to seal the fifth ribs and fix the adjacent prefabricated bottom plate pieces in connection.

[0021] In a possible embodiment, the central column includes at least one prefabricated ring coaxially arranged with the wind tower, and when the central column includes multiple prefabricated rings, a fourth connecting structure is provided between adjacent prefabricated rings.

[0022] In one possible implementation, the fourth connection structure includes:

[0023] a sixth rib connected to the prefabricated ring and protruding from a side of the prefabricated ring facing the adjacent prefabricated ring, wherein the sixth ribs on opposite sides of the adjacent prefabricated rings are connected;

[0024] The fourth casting material is cast into the gap between adjacent prefabricated rings to seal the sixth ribs and fix the adjacent prefabricated rings in connection.

[0025] In a possible embodiment, one or more surfaces of the prefabricated ring are provided with one or more protrusions, grooves or holes.

[0026] In a possible embodiment, the central column is a hollow structure, and at least one prefabricated ring is provided with a pre-opened doorway communicating with the interior of the central column.

[0027] In one possible embodiment, the prefabricated ring includes at least two prefabricated ring segments, and adjacent prefabricated ring segments are enclosed by a fifth connecting structure to form the prefabricated ring. The fifth connecting structure includes:

[0028] a seventh rib connected to the prefabricated ring segment and protruding from a side of the prefabricated ring segment facing the adjacent prefabricated ring segment, wherein the seventh ribs on the opposite sides of the adjacent prefabricated ring segments are connected;

[0029] The fifth casting material is cast into the gap between adjacent prefabricated ring segments to seal the seventh rib, thereby fixing the adjacent prefabricated ring segments in connection.

[0030] In a possible embodiment, the first connecting end is also provided with an adjustable support leg, which is connected to the first connecting end and protrudes from the first connecting end toward the side of the base plate, and the adjustable support leg is used to support the lateral support component when the fourth rib and the third rib are connected.

[0031] In a possible embodiment, the extension direction of the adjustable supporting legs is parallel to the axial direction of the central column, and at least three adjustable supporting legs arranged in a triangle are provided on the same first connecting end.

[0032] In a possible embodiment, the end surface of the first connecting end is perpendicular to the extension direction of the lateral supporting component; or,

[0033] An end surface of the first connecting end is perpendicular to the axial direction of the central column.

[0034] In one possible implementation, the base plate is provided with a first metal frame, and the first metal frame includes:

[0035] a first metal plate, embedded in the bottom of the base plate;

[0036] The first transfer cable is connected to the first metal plate and protrudes to a side of the bottom plate facing the central column.

[0037] In one possible implementation, a first prestressed component is provided in the central column, and the first prestressed component includes:

[0038] The first casing is buried in the center column;

[0039] A first prestressed cable is movably inserted into the first sleeve, the first prestressed cable comprising a first connector for connecting to the first transition cable, and a first fixing portion extending away from the first connector and extending to the top of the transition section;

[0040] The first fixing device can be connected to the first fixing portion and is used to lock the first prestressed cable at a preset stress after the first connector and the first transition cable are connected.

[0041] In a possible implementation, the first sleeve extends to the top of the transition section, and is used to inject the first adhesive into the first sleeve after the first fixing device locks the first fixing portion.

[0042] In one possible embodiment, the bottom plate is provided with a second metal frame, and the second metal frame includes:

[0043] a second metal plate, embedded in the bottom of the base plate;

[0044] The second transfer cable is connected to the second metal plate and protrudes between the bottom plate and a side facing the first connection end.

[0045] In one possible embodiment, a second prestressed component is provided in the lateral support component, and the second prestressed component includes:

[0046] a second casing, embedded in the lateral support member;

[0047] A second prestressed cable is movably inserted into the second sleeve, the second prestressed cable comprising a second connector for connecting to the second transition cable, and a second fixing portion extending away from the second connector and extending to the top of the transition section;

[0048] The second fixing device can be connected to the second fixing portion and is used to lock the second prestressed cable at a preset stress after the second connector and the second transition cable are connected.

[0049] In a possible embodiment, a reserved grouting hole is provided at the first connection end, and the reserved grouting hole is used to inject a second adhesive after the second transfer cable is connected to the second connector to seal the second transfer cable and the second connector.

[0050] In a possible embodiment, the second sleeve extends to the top of the transition section, and is used to inject the third adhesive into the second sleeve after the second fixing device locks the second fixing portion.

[0051] In a possible embodiment, the bottom surface of the prefabricated bottom panel is provided with dot-shaped protrusions and / or strip-shaped protrusions to form shear keys for supporting the prefabricated bottom panel and limiting the movement of the prefabricated bottom panel.

[0052] In a possible embodiment, a bolt column is provided in the transition section, the extension direction of the bolt column is parallel to the axial direction of the central column, and one end of the bolt column protrudes to the top of the transition section for connecting to the wind tower.

[0053] In a possible implementation, a third sleeve is embedded in the transition section, the bolt column is located in the third sleeve, the bolt column corresponds to the third sleeve one-to-one, and the other end of the bolt column protrudes to the bottom of the transition section.

[0054] In one possible embodiment, the transition section is a prefabricated element, the transition section includes a first connecting member, the first connecting member is connected to the transition section and is located between the transition section and the center column, the center column is connected to a second connecting member located between the transition section and the center column, the second connecting member is used to connect to the first connecting member, and a sixth casting material is cast between the transition section and the center column to seal the second connecting member and the first connecting member, so as to fix the transition section and the center column in connection.

[0055] In a possible implementation manner, the transition section and the prefabricated ring are an integral prefabricated structure.

[0056] In one possible embodiment, the transition section includes at least two transition segments, each of which is provided with an eighth rib, which is connected to the transition segment and protrudes from the side of the transition segment facing the adjacent transition segment, and the eighth ribs on the opposite sides of adjacent transition segments are connected; the seventh casting material is poured into the gap between the adjacent transition segments to seal the eighth rib, so that the adjacent transition segments are fixedly connected.

[0057] In a possible implementation, the transition segment and the prefabricated ring are an integrated prefabricated structure.

[0058] In one possible embodiment, the transition section is a prefabricated element, the transition section includes a third connecting member, the third connecting member is connected to the transition section and is located between the transition section and the second connecting end, the second connecting end is connected to a fourth connecting member located between the transition section and the second connecting end, the fourth connecting member is used to connect to the third connecting member, and the eighth casting material is cast between the transition section and the second connecting end to fix the transition section and the second connecting end.

[0059] In one possible embodiment, the transition section includes a prefabricated frame, the center column is connected to a second connecting member located between the prefabricated frame and the center column, the second connecting end is connected to a fourth connecting member located between the prefabricated frame and the second connecting end, the second connecting member and the fourth connecting member are used to connect to the prefabricated frame, and a ninth casting material is cast on the prefabricated frame, between the prefabricated frame and the center column, and between the prefabricated frame and the second connecting end to form a transition section fixedly connected to the center column and the second connecting end.

[0060] In one possible embodiment, there are at least two central columns and at least two transition sections, and the number of transition sections is consistent with that of central columns. The transition sections and central columns are alternately stacked from top to bottom, the bottom plate is connected to the bottom central column, the lateral support components are connected to the transition sections and the bottom plate, and the distances between the first connection ends of the lateral support components connected to different transition sections and the central column are different.

[0061] Based on the above content, the present application also provides an installation method for a segmented prefabricated tower foundation device, which is applicable to the segmented prefabricated tower foundation device. The manufacturing method includes:

[0062] Excavation and leveling of the site to form a construction surface;

[0063] Find the installation location of the center column on the site to install the center column;

[0064] Laying prefabricated floor panels around the central column, and connecting adjacent prefabricated floor panels to form a floor through a third connecting structure;

[0065] The center column is fixedly connected to the base plate through the first connecting structure;

[0066] Lift the lateral support components to the support position and temporarily secure them;

[0067] The first connecting end of the lateral support member is fixedly connected to the bottom plate through the second connecting structure;

[0068] Connecting the second connecting end of the lateral support member, the top of the central column, and the transition section to securely connect the second connecting end of the lateral support member to the central column;

[0069] Backfill and compact the backfill material to complete the installation of the segmented prefabricated tower foundation unit.

[0070] Compared with the prior art, the technical solution provided by the present invention has at least the following beneficial effects: the bottom of the central column is connected to a base plate, and the top of the central column is connected to a transition section, which is used to connect to the wind tower and make the central column and the wind tower coaxially arranged, and a lateral support component located in the circumferential direction of the central column is provided between the transition section and the base plate, which is used to fix the position of the central column and the transition section, provide the anti-overturning ability of the tower foundation device, and maintain the bearing performance and stability of the tower foundation device. The setting of the central column and the transition section can effectively increase the top elevation of the tower foundation device, thereby reducing the torque at the connection between the wind tower and the foundation, and thereby reducing the size of the tower structure and the amount of material used. The base plate is formed by a number of prefabricated base plate pieces and a third connecting structure located between adjacent prefabricated base plate pieces. Through the standardization of the prefabricated base plate pieces, the consistency and stability of the quality of the prefabricated base plate pieces can be guaranteed, so as to carry out rapid and standardized assembly of the base plate, which can simplify the wind tower foundation construction process and increase the construction speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0072] Figure 1 A schematic structural diagram of a prefabricated shard tower foundation device provided in an embodiment of the present invention;

[0073] Figure 2 A schematic diagram of the structure of a prefabricated frame used in the transition section provided in an embodiment of the present invention;

[0074] Figure 3 A schematic structural diagram of an adjustable support leg provided in an embodiment of the present invention;

[0075] Figure 4 A schematic diagram of the structure of the prefabricated bottom plate provided in an embodiment of the present invention is an L-shaped;

[0076] Figure 5A schematic structural diagram of the second connection structure and the third connection structure provided by an embodiment of the present invention when connected;

[0077] Figure 6 A cross-sectional view of a prefabricated segmented tower foundation device provided by an embodiment of the present invention without the first prestressed component;

[0078] Figure 7 A cross-sectional view of a prefabricated segmented tower foundation device provided by an embodiment of the present invention having a first prestressed component;

[0079] Figure 8 for Figure 7 A partial enlarged view of the bottom plate;

[0080] Figure 9 A schematic structural diagram of a second connection structure provided in an embodiment of the present invention;

[0081] Figure 10 for Figure 7 A partial enlarged view of the transfer section;

[0082] Figure 11 A cross-sectional view of a bolt column provided in an embodiment of the present invention with both ends passing through a transition section;

[0083] Figure 12 A schematic structural diagram of another second connection structure provided by an embodiment of the present invention;

[0084] Figure 13 A cross-sectional view of another second connection structure provided by an embodiment of the present invention;

[0085] Figure 14 A schematic structural diagram of a prefabricated bottom plate with dot-shaped protrusions provided in an embodiment of the present invention;

[0086] Figure 15 A schematic structural diagram of a prefabricated bottom plate with strip-shaped protrusions provided in an embodiment of the present invention;

[0087] Figure 16 A schematic diagram of a structure in which the transfer sections and the central column provided in an embodiment of the present invention are alternately stacked from top to bottom;

[0088] Figure 17 A cross-sectional view of the adapter sections and the central column provided in an embodiment of the present invention, alternately stacked from top to bottom;

[0089] Figure 18 A schematic structural diagram of a first rib of a prefabricated ring segment provided in an embodiment of the present invention;

[0090] Figure 19 A schematic structural diagram of the sixth rib of the prefabricated ring segment provided in an embodiment of the present invention;

[0091] Figure 20 A schematic structural diagram of a second rib provided by an embodiment of the present invention;

[0092] Figure 21 A schematic structural diagram of a third rib provided in an embodiment of the present invention;

[0093] Figure 22 A schematic structural diagram of a fourth connecting member provided in an embodiment of the present invention;

[0094] Figure 23 A schematic structural diagram of a construction surface provided by an embodiment of the present invention;

[0095] Figure 24 A structural schematic diagram of another perspective of the construction surface provided by an embodiment of the present invention;

[0096] Figure 25 A schematic structural diagram of a positioning ring provided in an embodiment of the present invention;

[0097] Figure 26 A schematic diagram of a structure in which a central column provided by an embodiment of the present invention is installed on the outer periphery of a positioning ring;

[0098] Figure 27 A schematic diagram of the structure of the connection between the base plate and the center column provided in an embodiment of the present invention;

[0099] Figure 28 A schematic diagram of the structure of the lateral support component provided by an embodiment of the present invention;

[0100] Figure 29 A schematic structural diagram of the connection between the second connector and the second adapter cable provided by an embodiment of the present invention;

[0101] Figure 30 A cross-sectional view of a transition section provided by an embodiment of the present invention;

[0102] Figure 31 A cross-sectional view of the installed prefabricated segmented tower foundation device provided in an embodiment of the present invention.

[0103] in:

[0104] 100 - center column, 110 - prefabricated ring, 120 - prefabricated ring segment, 130 - pre-opened door opening, 141 - first casing, 142 - first prestressed cable, 143 - first connector, 150 - sixth reinforcement bar, 160 - second connector;

[0105] 200 - lateral support member, 210 - first connection end, 211 - adjustable support leg, 212 - reserved grouting hole, 220 - second connection end, 221 - fourth connection member, 230 - second prestressed assembly, 231 - second sleeve, 232 - second prestressed cable, 233 - second connector, 234 - second fixing device;

[0106] 300 - bottom plate, 310 - prefabricated bottom plate, 311 - shear key, 320 - third connecting structure, 330 - first metal frame, 331 - first metal plate, 332 - first transfer cable, 340 - second metal frame, 341 - second metal plate, 342 - second transfer cable;

[0107] 400-transfer section, 410-bolt column, 420-prefabricated frame;

[0108] 500-first connecting structure, 510-first rib, 520-second rib;

[0109] 600-second connecting structure, 610-third rib, 620-fourth rib;

[0110] 700-wind tower;

[0111] 800-construction surface;

[0112] 900-Locking ring. DETAILED DESCRIPTION

[0113] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0114] In order to enable those skilled in the art to better understand the solutions of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0115] In the description of the present invention, it should be understood that the terms "upper", "lower", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the position or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation of the present invention.

[0116] The purpose of the present invention is to provide a segmented prefabricated tower foundation device and installation method, which can provide the tower foundation device with anti-overturning ability, maintain the bearing performance and stability of the tower foundation device, effectively improve the top elevation of the tower foundation device, thereby reducing the torque at the connection between the wind tower and the foundation, and then reducing the size of the tower structure and the amount of material used. It can ensure the consistency and stability of the quality of the prefabricated bottom plate pieces, so as to carry out rapid and standardized assembly of the bottom plate, and can simplify the wind tower foundation construction process and increase the construction speed.

[0117] See also Figures 1 to 31 To achieve the above-mentioned purpose, the present invention provides a prefabricated shard tower foundation device, comprising a central column 100, a lateral support member 200 located in the circumferential direction of the central column 100, a base plate 300 located at the bottom of the central column 100, and a transition section 400 located at the top of the central column 100. The extension direction of the lateral support member 200 is arranged at an angle to the central column 100, and the lateral support member 200 includes a first connection end 210 away from the central column 100 and a second connection end facing away from the first connection end 210. 220, a first connecting structure 500 is provided between the central column 100 and the base plate 300, a second connecting structure 600 is provided between the base plate 300 and the first connecting end 210, the central column 100 and the second connecting end 220 are connected by a transition section 400, and the transition section 400 is used to connect to the wind tower 700, so that the central column 100 and the wind tower 700 are coaxially arranged, the base plate 300 includes a plurality of prefabricated base plate pieces 310, and a third connecting structure 320 is provided on the side facing each other of adjacent prefabricated base plate pieces 310.

[0118] It can be understood that the central column 100 is located at the center of the entire segmented prefabricated tower foundation device, the axis of the central column 100 is collinear with the axis of the transition section 400 and the wind tower 700 located above the transition section 400, and the axis of the central column 100 passes through the center of the base plate 300. The base plate 300 is located below and outside the bottom of the central column 100, bears all the loads of the tower foundation, and disperses the tower foundation load to the foundation. The maximum horizontal dimension of the base plate 300 is much larger than the maximum vertical dimension of the base plate 300, and the maximum horizontal dimension of the base plate 300 is much larger than the maximum horizontal dimension of the central column 100. The number of lateral support components 200 is at least three, and The first connection end 210 of the lateral support component 200 is connected to the base plate 300, and the second connection end 220 of the lateral support component 200 can be connected to the central column 100 through the transition section 400, or directly connected to the central column 100 to provide support; the transition section 400 is located directly above the central column 100, and provides an interface for connection with the wind tower 700, specifically, the upper end of the transition section 400 is connected to the bottom flange at the bottom of the wind tower 700; the wind tower 700 can be a metal tower, and the tower foundation device can be suitable for towers of any form and material, including but not limited to metal towers, cast concrete towers, precast concrete towers, lattice towers, etc.

[0119] The bottom of the central column 100 is connected to the base plate 300, and the top of the central column 100 is connected to the transition section 400. The transition section 400 is used to connect to the wind tower 700 and make the central column 100 and the wind tower 700 coaxially arranged. A lateral support component 200 is provided between the transition section 400 and the base plate 300 and is located in the circumferential direction of the central column 100. It is used to fix the position of the central column 100 and the transition section 400, provide the anti-overturning ability of the tower foundation device, maintain the bearing performance and stability of the tower foundation device, and the setting of the central column 100 and the transition section 400 can effectively increase the top elevation of the tower foundation device, thereby reducing the wind The torque at the connection between the wind tower 700 and the foundation is reduced, thereby reducing the size of the tower structure and the amount of material used. The base plate 300 is formed by a number of prefabricated base plate pieces 310 and a third connection structure 320 located between adjacent prefabricated base plate pieces 310. Through the standardization of the prefabricated base plate pieces 310, the consistency and stability of the quality of the prefabricated base plate pieces 310 can be guaranteed, so as to carry out rapid and standardized assembly of the base plate 300, which can simplify the foundation construction process of the wind turbine tower 700 and increase the construction speed. Compared with the existing technology, it can also reduce the use of concrete, steel bars, and anchor materials in the tower foundation device, thereby reducing the cost of the tower foundation device.

[0120] It should be noted that when the prefabricated bottom plate 310 is a flat-plate structure, the prefabricated bottom plate 310 can be laid and spliced ​​around the circumferential surface of the central column 100 to form a bottom plate 300 with a ring-shaped middle portion, and is connected to the bottom of the circumferential surface of the central column 100 through a first connecting structure 500; when the prefabricated bottom plate 310 is an L-shaped structure, the prefabricated bottom plate 310 is laid and spliced ​​around the central axis of the central column 100 to form a bottom plate 300 with a ring-shaped protrusion in the middle portion, and the ring-shaped protrusion is connected to the bottom surface of the central column 100 through a first connecting structure 500.

[0121] In one possible embodiment, the first connection structure 500 includes a first rib 510, a second rib 520, and a first castable. The first rib 510 is connected to the center column 100 and protrudes from the center column 100 toward the bottom plate 300. The second rib 520 is connected to the bottom plate 300 and protrudes from the bottom plate 300 toward the center column 100. The second rib 520 is used to connect to the first rib 510. The first castable is cast in the gap between the center column 100 and the bottom plate 300 to seal the second rib 520 and the first rib 510, thereby fixing the center column 100 and the bottom plate 300. There may be multiple first ribs 510 and second ribs 520. The connection between the first rib 510 and the second rib 520 may be, but is not limited to, binding or welding. The first castable may be, but is not limited to, an adhesive or concrete material, as long as it can achieve a fixed connection between the center column 100 and the bottom plate 300.

[0122] In one possible embodiment, the second connection structure 600 includes a third rib 610, a fourth rib 620, and a second castable. The third rib 610 is connected to the base plate 300 and protrudes from the base plate 300 on the side facing the first connection end 210. The fourth rib 620 is connected to the first connection end 210 and protrudes from the side facing the base plate 300. The fourth rib 620 is used to connect to the third rib 610. The second castable is cast in the gap between the base plate 300 and the first connection end 210 to seal the third rib 610 and the fourth rib 620, thereby firmly connecting the base plate 300 and the first connection end 210. The third rib 610 and the fourth rib 620 may be multiple, and the connection between the third rib 610 and the fourth rib 620 may be, but is not limited to, binding or welding. The second castable may be, but is not limited to, an adhesive or concrete material, as long as it can firmly connect the base plate 300 and the first connection end 210.

[0123] In another possible embodiment, the second connection structure 600 includes a reserved bolt column and a flange, the reserved bolt column is connected to the base plate 300 and protrudes from the side of the base plate 300 toward the first connection end 210; the extension direction of the reserved bolt column is parallel to the axial direction of the center column 100, and the flange is connected to the side of the first connection end 210 toward the base plate 300, and the flange is cooperated with the reserved bolt column to fix the base plate 300 and the first connection end 210. The second connection structure 600 adopts the reserved bolt column and the flange, which can facilitate the connection and disassembly of the base plate 300 and the first connection end 210, thereby improving assembly efficiency; specifically, the lateral support component 200 is set to an integrated structure including a steel pipe and reinforced concrete. When manufacturing the lateral support component 200, concrete is directly poured into the steel pipe where steel bars are arranged to increase strength, and the flange is set at the bottom of the lateral support component 200 so that the plane where the flange is located is perpendicular to the axial direction of the center column 100, and the flange is aligned with the reserved bolt column and then connected and fixed.

[0124] In one possible embodiment, the third connecting structure 320 includes a fifth rib and a third castable. The fifth rib is connected to the precast floor panel 310 and protrudes from the side of the precast floor panel 310 facing the adjacent precast floor panel 310. The fifth ribs on the facing sides of adjacent precast floor panels 310 are connected. The third castable is cast in the gap between adjacent precast floor panels 310 to seal the fifth rib, thereby securely connecting the adjacent precast floor panels 310. There may be multiple fifth ribs, and the connection between the fifth ribs may be, but is not limited to, binding or welding. The third castable may be, but is not limited to, an adhesive or concrete material, as long as it can securely connect the adjacent precast floor panels 310. Alternatively, the facing sides of the precast floor panels 310 may be configured as a planar structure, and the adjacent precast floor panels 310 may be securely connected by bonding or welding the planar structures.

[0125] In one possible embodiment, the central column 100 includes at least one prefabricated ring 110 coaxially arranged with the wind tower 700, and when the central column 100 includes multiple prefabricated rings 110, a fourth connecting structure is provided between adjacent prefabricated rings 110. The cross-sectional form of the prefabricated ring 110 can be circular, polygonal or any other shape. The fourth connecting structure includes a sixth rib 150 and a fourth castable. The sixth rib 150 is connected to the prefabricated ring 110 and protrudes from the side of the prefabricated ring 110 toward the adjacent prefabricated ring 110. The sixth ribs 150 on the opposite sides of the adjacent prefabricated rings 110 are connected; the fourth castable is cast in the gap between the adjacent prefabricated rings 110 to seal the sixth rib 150, so that the adjacent prefabricated rings 110 are fixedly connected. There are multiple sixth ribs 150 , and the connections between the sixth ribs 150 can be, but are not limited to, binding or welding. The fourth castable can be, but is not limited to, an adhesive or concrete material, as long as it can achieve fixed connection between adjacent prefabricated rings 110. One or more surfaces of the prefabricated rings 110 are provided with one or more protrusions, grooves, or holes to facilitate lifting, transportation, fixing, and installation.

[0126] In one possible embodiment, the prefabricated ring 110 includes at least two prefabricated ring segments 120. Adjacent prefabricated ring segments 120 are enclosed by a fifth connecting structure to form the prefabricated ring 110. The fifth connecting structure includes a seventh rib and a fifth castable. The seventh rib is connected to the prefabricated ring segment 120 and protrudes from the side of the prefabricated ring segment 120 facing the adjacent prefabricated ring segment 120. The seventh ribs on the opposite sides of adjacent prefabricated ring segments 120 are connected. The fifth castable is cast into the gap between adjacent prefabricated ring segments 120 to seal the seventh rib and securely connect the adjacent prefabricated ring segments 120. There may be multiple seventh ribs, and the connection between the seventh ribs may be, but is not limited to, binding or welding. The fifth castable may be, but is not limited to, an adhesive or concrete material, as long as it can securely connect the adjacent prefabricated ring segments 120.

[0127] The prefabricated ring 110 is formed by assembling at least two prefabricated ring segments 120. Multiple layers of prefabricated rings 110 are assembled from top to bottom to form the hollow central column 100. At least one prefabricated ring 110 is provided with a pre-opened doorway 130 communicating with the interior of the central column 100. Each pre-opened doorway 130 must be completely distributed on one prefabricated ring segment 120 to avoid affecting the assembly of the prefabricated ring segments 120. The central column 100 can also be configured as a solid structure based on actual needs. The cross-sectional shape of the central column 100 along its own axis can be, but is not limited to, circular, square, etc. The cross-sectional area of ​​the central column 100 along its own axis can be the same or different. When the cross-sectional area of ​​the central column 100 along its own axis is different, the cross-sectional area preferably increases from top to bottom.

[0128] In a possible implementation, the lateral support component 200 is a prefabricated reinforced concrete element, the first connecting end 210 is further provided with adjustable support legs 211, the adjustable support legs 211 are connected to the first connecting end 210 and protrude from the first connecting end 210 towards one side of the bottom plate 300, the adjustable support legs 211 are used to support the lateral support component 200 when the fourth reinforcing bar 620 and the third reinforcing bar 610 are connected, the extension direction of the adjustable support legs 211 is parallel to the axis direction of the central column 100, and at least three adjustable support legs 211 arranged in a triangular shape are provided on the same first connecting end 210. The cross section of the lateral support component 200 is rectangular and the cross section size is consistent along the axis direction, and the cross section shape and size of the lateral support component 200 can also be adjusted according to actual needs, as long as the above purposes can be achieved.

[0129] The end surface of the first connecting end 210 is perpendicular to the extension direction of the lateral support component 200, which facilitates the batch production of the lateral support component 200, improves the versatility of the lateral support component 200, and reduces the number of molds; or the end surface of the first connecting end 210 is perpendicular to the axis direction of the central column 100, which facilitates the connection between the first connecting end 210 and the bottom plate 300. It should be noted that the connection position of the first connecting end 210 and the bottom plate 300 can be arranged at the joint of the adjacent prefabricated bottom plate piece 310, and the concrete can be uniformly poured, or the connection position of the first connecting end 210 and the bottom plate 300 can be arranged on the prefabricated bottom plate piece 310 to improve the connection effect of the first connecting end 210 and the bottom plate 300.

[0130] It should be noted that the lateral support component 200, the prefabricated bottom plate piece 310, and the prefabricated ring piece 120 can be prefabricated by reinforced concrete according to actual needs of size and shape, so as to facilitate quality control and improve the assembly efficiency of the tower foundation device, thereby reducing the construction period.

[0131] In one possible embodiment, the base plate 300 is provided with a first metal frame 330, the first metal frame 330 includes a first metal plate 331 and a first transition cable 332, the first metal plate 331 is buried in the bottom of the base plate 300; the first transition cable 332 is connected to the first metal plate 331 and protrudes to the side of the base plate 300 facing the center column 100, the extension direction of the first transition cable 332 is parallel to the axial direction of the center column 100, and is perpendicular to the plane where the first metal plate 331 is located, the center column 100 is provided with a first prestressed component, the first prestressed component includes a first sleeve 141, a first prestressed cable 142 and a first fixing device, the first sleeve 141 is buried in the center column 100, and when the center column 100 includes a plurality of prefabricated rings 11 0, a section of the first sleeve 141 is embedded in each prefabricated ring 110. When the prefabricated rings 110 are assembled, the sections of the first sleeve 141 are aligned and the first sleeves 141 in different prefabricated rings 110 are connected by adding a small section of the first sleeve 141 to form a complete first sleeve 141; the first prestressed cable 142 is movably inserted into the first sleeve 141, and the first prestressed cable 142 includes a first connector 143 for connecting to the first transition cable 332, and a first fixing portion that is away from the first connector 143 and extends to the top of the transition section 400; the first fixing device can be connected to the first fixing portion, and is used to lock the first prestressed cable 142 at a preset stress after the first connector 143 and the first transition cable 332 are connected.

[0132] In one possible embodiment, the base plate 300 is provided with a second metal frame 340, the second metal frame 340 includes a second metal plate 341 and a second transition cable 342, the second metal plate 341 is buried in the bottom of the base plate 300; the second transition cable 342 is connected to the second metal plate 341 and protrudes between the base plate 300 and the side facing the first connection end 210, the extension direction of the second transition cable 342 is parallel to the axial direction of the central column 100, and is perpendicular to the plane where the second metal plate 341 is located, and a second prestressed component 230 is provided in the lateral support component 200, and the second prestressed component 230 includes a second sleeve 231, a second prestressed cable 232 and a second The fixing device 234, the second sleeve 231 is buried in the lateral support component 200, and the extension direction of the second sleeve 231 in the lateral support component 200 is consistent with the extension direction of the lateral support component 200; the second prestressed cable 232 is movably passed through the second sleeve 231, and the second prestressed cable 232 includes a second connector 233 for connecting to the second transition cable 342, and a second fixing portion away from the second connector 233 and extending to the top of the transition section 400; the second fixing device 234 can be connected to the second fixing portion, and is used to lock the second prestressed cable 232 at a preset stress after the second connector 233 and the second transition cable 342 are connected.

[0133] The transition section 400, the central column 100 and the base plate 300 are connected as a whole through the first prestressed component. The first sleeve 141 extends to the top of the transition section 400 and is used to inject the first adhesive into the first sleeve 141 after the first fixing device locks the first fixing part, so as to ensure the stability of the first prestressed cable 142. The first connection end 210 is provided with a reserved grouting hole 212. The reserved grouting hole 212 is used to inject the second adhesive after the second transition cable 342 is connected to the second connector 233, so as to seal the second transition cable 342 and the second connector 233. Specifically, after the second transition cable 342 and the second connector 233 are connected, no tension force is temporarily applied. The second adhesive is used to cast the area connected between the first connection end 210 of the support component and the base plate 300. Before casting, an extension tube of the second sleeve 231 is installed on the periphery of the exposed part of the second transition cable 342 and the second connector 233 to avoid raising Pre-casting; the transition section 400, the lateral support component 200 and the base plate 300 are connected as a whole through the second prestressed component 230, and the second sleeve 231 extends to the top of the transition section 400, and is used to inject a third adhesive into the second sleeve 231 after the second fixing part is locked by the second fixing device 234, so as to ensure the stability of the state of the second prestressed cable 232. The first adhesive, the second adhesive and the third adhesive can be but are not limited to concrete, cement mortar, resin and other materials. The first adhesive, the second adhesive and the third adhesive can also be replaced by on-site cast concrete.

[0134] It should be noted that the first connector 143 and the first adapter cable 332 are connected using existing techniques, including but not limited to welding, lashing, sleeves, and hooks. Similarly, the second connector 233 and the second adapter cable 342 are connected using existing techniques, including but not limited to welding, lashing, sleeves, and hooks. The first and second fixing devices 234 should be positioned horizontally at a certain distance to avoid interference between the first and second prestressed components 230 during installation.

[0135] In one possible embodiment, the bottom surface of the prefabricated bottom plate 310 is provided with dot-shaped and / or strip-shaped protrusions to form shear keys 311 for supporting the prefabricated bottom plate 310. The shear keys 311 can improve the anti-slip capability of the prefabricated bottom plate 310 and are used to limit the movement of the prefabricated bottom plate 310. The cross-section of the shear keys 311 can be increased or decreased according to actual needs. Rebar can be embedded in the shear keys 311 so that the shear keys 311 form a beam structure at the bottom of the prefabricated bottom plate 310, thereby improving the overall shear strength of the prefabricated bottom plate 310. The cross-section of the shear keys 311 can be rectangular, circular, or any other shape.

[0136] In one possible embodiment, a bolt column 410 is provided within the transition section 400. The bolt column 410 extends parallel to the axis of the center column 100, with one end of the bolt column 410 protruding a certain distance from the top of the transition section 400 for connection to the bottom flange of the wind tower 700. Alternatively, a third sleeve may be pre-embedded within the transition section 400, with the bolt column 410 positioned within the third sleeve, corresponding one-to-one with the third sleeve, and the other end of the bolt column 410 protruding from the bottom of the transition section 400. This allows the bolt column 410 to be replaceable, facilitating subsequent maintenance, inspection, and replacement.

[0137] In one possible embodiment, the transition section 400 includes a first connecting member, which is connected to the transition section 400 and is located between the transition section 400 and the center column 100. The center column 100 is connected to a second connecting member 160 located between the transition section 400 and the center column 100. The second connecting member 160 is used to connect to the first connecting member. A sixth casting material is cast between the transition section 400 and the center column 100 to seal the second connecting member 160 and the first connecting member, and is used to fix the transition section 400 and the center column 100 in connection. The transition section 400 and the prefabricated ring 110 are an integrated prefabricated structure. Specifically, when manufacturing the prefabricated ring 110, a certain area thereof can be thickened according to the cross-sectional form of the transition section 400, so that the transition section 400 and the center column 100 form an integral structure.

[0138] In one possible embodiment, the transition section 400 is a prefabricated element, that is, the transition section 400 can be an annular prefabricated element or a segmented prefabricated element, and the segmented prefabricated elements can be assembled into a complete annular transition section 400 during installation. When the transition section 400 is a segmented prefabricated element, the transition section 400 includes at least two transition sections 400 pieces, and the transition section 400 pieces are provided with an eighth rib, which is connected to the transition section 400 pieces and protrudes from the transition section. The 400 pieces face one side of the adjacent transition section 400 pieces, and the eighth ribs on the opposite sides of the adjacent transition section 400 pieces are connected; the seventh casting material is poured into the gap between the adjacent transition section 400 pieces to seal the eighth rib, so that the adjacent transition section 400 pieces are fixedly connected. The transition section 400 pieces and the prefabricated ring piece 120 can also be an integrated prefabricated structure. Specifically, when manufacturing the prefabricated ring piece 120, a certain area thereof can be thickened according to the cross-sectional form of the transition section 400 piece.

[0139] In one possible embodiment, the transition section 400 is a prefabricated element, and the transition section 400 includes a third connecting member, which is connected to the transition section 400 and is located between the transition section 400 and the second connecting end 220. The second connecting end 220 is connected to a fourth connecting member 221 located between the transition section 400 and the second connecting end 220. The fourth connecting member 221 is used to connect to the third connecting member. An eighth casting material is cast between the transition section 400 and the second connecting end 220 to fix the transition section 400 and the second connecting end 220.

[0140] In one possible embodiment, the transition section 400 includes a prefabricated frame 420, which is specifically a ring-shaped steel cage. The central column 100 is connected to a second connecting member 160 located between the prefabricated frame 420 and the central column 100. The second connecting end 220 is connected to a fourth connecting member 221 located between the prefabricated frame 420 and the second connecting end 220. The second connecting member 160 and the fourth connecting member 221 are used to connect to the prefabricated frame 420. The second connecting member 160 and the fourth connecting member 221 are specifically steel bars. The second connecting member 160 and the fourth connecting member 221 are used to connect to the prefabricated frame 420. The connection process specifically involves hoisting the lateral support components 200 sequentially to the support locations and temporarily securing them using adjustable brackets or hoisting machinery to maintain stability during the installation process. The annular reinforcement cage is connected to the exposed rebar at the top of the central column 100 and the exposed rebar at the top of the second connecting end 220 of the lateral support component 200 by tying or welding. The ninth casting material is poured into the precast frame 420, between the precast frame 420 and the central column 100, and between the precast frame 420 and the second connecting end 220, to form the transition section 400 that is fixedly connected to the central column 100 and the second connecting end 220. Before pouring, the extension tube of the second sleeve 231 is pre-installed in the pouring area. The top end of the second prestressed cable 232 is passed through the extension tube of the second sleeve 231 to the top of the transition section 400, with a certain length reserved. After pouring is completed, tension is applied to the top end of the second prestressed cable 232 to secure it. A third adhesive is then injected into the gap between the second sleeve 231 and the second prestressed cable 232.

[0141] In one possible embodiment, there are at least two central columns 100, at least two transition sections 400, and the number of transition sections 400 is consistent with that of central columns 100. The transition sections 400 and central columns 100 are alternately stacked from top to bottom, that is, from top to bottom, they are: transition section 400, central column 100, transition section 400, central column 100, the bottom plate 300 is connected to the bottom central column 100, the lateral support components 200 are connected to the transition section 400 and the bottom plate 300, and the distances between the first connection ends 210 of the lateral support components 200 connected to different transition sections 400 and the central column 100 are different, and the distances between the first connection ends 210 of the lateral support components 200 connected to the same transition section 400 and the central column 100 are different. The distance between the first connection end 210 of the lateral support component 200 connected to the transition section 400 at a lower height and the central column 100 is closer, and the distance between the first connection end 210 of the lateral support component 200 connected to the transition section 400 at a higher height and the central column 100 is farther; the lateral support components 200 connected to different transition sections 400 can be arranged correspondingly or cross-arranged up and down, that is, the projections of the axes of the lateral support components 200 connected to different transition sections 400 on the horizontal plane can coincide or there can be an angle. In addition, when there is sufficient space in the central column 100, the lateral support component 200 can also be arranged in the central column 100 as needed to improve the stability of the central column 100.

[0142] Based on the above content, the present application also provides an installation method for a segmented prefabricated tower foundation device, which is applicable to the segmented prefabricated tower foundation device. The manufacturing method includes: excavating and leveling the site to form a construction surface 800, specifically, excavating, leveling and pouring a concrete cushion layer to form a construction surface 800. The construction surface 800 can be a flat plane, and a groove body adapted to the shear key 311 can also be added to adapt to the prefabricated bottom plate 310 provided with the shear key 311; finding the installation position of the center column 100 on the site to install the center column 100, specifically, building a positioning ring 900 for installing the prefabricated ring piece 120 in the center of the site, and The upper surface of 800 is evenly sprayed with adhesive, and the adhesive material can be concrete, cement or other materials known in the prior art. The prefabricated ring pieces 120 are placed at the designated position along the positioning ring 900 and assembled into prefabricated rings 110. Then, the multiple layers of prefabricated rings 110 are connected by adhesive to assemble into a central column 100; the prefabricated bottom plate pieces 310 are laid around the central column 100, and the adjacent prefabricated bottom plate pieces 310 are connected to form a bottom plate 300 through a third connecting structure 320. Specifically, the adjacent prefabricated bottom plate pieces 310 are connected by tying or welding steel bars and pouring concrete to form a complete bottom plate 300; the center is made to be The column 100 is fixedly connected to the base plate 300, specifically, the connection area between the bottom of the central column 100 and the center of the prefabricated base plate 310 is connected by tying or welding steel bars and pouring concrete; the lateral support component 200 is hoisted to the support position and temporarily fixed, and the exposed parts of the contact surface between the prefabricated components (prefabricated ring piece 120, prefabricated base plate 310, lateral support component 200) and the cast-in-place concrete are sprayed with a waterproofing agent to prevent water seepage and erosion on the contact surface. The waterproofing agent can be epoxy resin or other materials available according to known technologies, and the concrete surfaces of all prefabricated components in the areas that need to be spliced ​​or connected also need to be roughened to improve the strength of the subsequent grouting connection. degree; the first connection end 210 of the lateral support component 200 is fixedly connected to the base plate 300 through the second connection structure 600; the second connection end 220 of the lateral support component 200, the top of the central column 100 and the transition section 400 are connected to fix the second connection end 220 of the lateral support component 200 to the central column 100; backfill a certain thickness of backfill and compact it to complete the installation of the segmented prefabricated tower foundation device. The backfill is soil, sand, stone and other materials. The backfill thickness of the backfill can be determined according to actual needs. The backfill can also be backfilled inside the hollow central column 100 to improve the stability of the central column 100.

[0143] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0144] The various embodiments described in this specification are intended to be exemplary only. The phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of "including," "comprising," or "having" and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. Unless specified or limited otherwise, the terms "connected" and "coupled" and variations thereof are used broadly and encompass both direct and indirect connections and couplings. Further, "connected" and "coupled" and variations thereof are used broadly and encompass connections and couplings where one or more intervening components are present. In addition, any reference to claimifying the exemplary embodiments, examples, or aspects of the application, is not a limitation on the scope of the application. Any reference to claimifying the exemplary embodiments, examples, or aspects of the application is intended only to clarify the disclosure and any claim will be derived from the text of the specification.

[0145] The principles and implementations of the present application have been described in the specification with reference to specific examples. The above description of the embodiments is only intended to help understand the method of the present application and its core idea. It should be noted that, for those skilled in the art, without departing from the principles of the present application, some improvements and modifications can be made to the present application, and these improvements and modifications also fall within the protection scope of the present application.

Claims

1. A prefabricated tower foundation device, characterized in that: The invention relates to a lateral support component (200) for supporting a user, comprising a central column (100), a lateral support component (200) located in the circumferential direction of the central column (100), a bottom plate (300) located at the bottom of the central column (100), and a transition section (400) located at the top of the central column (100), wherein the extension direction of the lateral support component (200) is arranged at an angle to the central column (100), and the lateral support component (200) comprises a first connection end (210) away from the central column (100) and a second connection end (220) away from the first connection end (210), wherein the central column (100) and the bottom plate ( A first connecting structure (500) is provided between the base plate (300) and the first connecting end (210), a second connecting structure (600) is provided between the base plate (300) and the first connecting end (210), the central column (100) and the second connecting end (220) are connected via the transition section (400), and the transition section (400) is used to connect to the wind power tower (700), so that the central column (100) and the wind power tower (700) are coaxially arranged, the base plate (300) includes a plurality of prefabricated base plate pieces (310), and a third connecting structure (320) is provided on the side adjacent to the prefabricated base plate pieces (310) facing each other.

2. The prefabricated tower foundation device according to claim 1, characterized in that: The first connection structure (500) comprises: A first rib (510) connected to the central column (100) and protruding from a side of the central column (100) toward the bottom plate (300); a second rib (520) connected to the bottom plate (300) and protruding from a side of the bottom plate (300) facing the central column (100), the second rib (520) being used to connect to the first rib (510); A first casting material is cast into the gap between the central column (100) and the bottom plate (300) to seal the second rib (520) and the first rib (510), thereby fixing the central column (100) and the bottom plate (300) in connection.

3. The prefabricated tower foundation device according to claim 1, characterized in that: The second connection structure (600) comprises: a third rib (610) connected to the bottom plate (300) and protruding from the bottom plate (300) toward a side of the first connection end (210); a fourth rib (620), connected to the first connection end (210) and protruding from the first connection end (210) toward the side of the bottom plate (300), the fourth rib (620) being used to connect to the third rib (610); A second casting material is cast into the gap between the base plate (300) and the first connecting end (210) to seal the third rib (610) and the fourth rib (620), thereby fixing the base plate (300) and the first connecting end (210) in connection.

4. The prefabricated tower foundation device according to claim 1, characterized in that: The second connection structure (600) comprises: A reserved bolt column is connected to the bottom plate (300) and protrudes from the bottom plate (300) toward the first connection end (210); A flange is connected to the side of the first connecting end (210) facing the base plate (300), and the flange is connected in cooperation with the reserved bolt column to fix the base plate (300) and the first connecting end (210).

5. The prefabricated tower foundation device according to claim 1, characterized in that: The third connection structure (320) includes: a fifth rib connected to the prefabricated bottom plate (310) and protruding from a side of the prefabricated bottom plate (310) facing the adjacent prefabricated bottom plate (310), wherein the fifth ribs on the opposite sides of the adjacent prefabricated bottom plate (310) are connected; The third casting material is cast into the gap between adjacent prefabricated bottom plate pieces (310) to seal the fifth ribs, thereby fixing the adjacent prefabricated bottom plate pieces (310) in connection.

6. The prefabricated tower foundation device according to claim 1, characterized in that: The central column (100) includes at least one prefabricated ring (110) coaxially arranged with the wind power tower (700), and when the central column (100) includes a plurality of the prefabricated rings (110), a fourth connection structure is provided between adjacent prefabricated rings (110).

7. The prefabricated tower foundation device according to claim 6, characterized in that: The fourth connection structure includes: a sixth rib (150) connected to the prefabricated ring (110) and protruding from a side of the prefabricated ring (110) facing the adjacent prefabricated ring (110), wherein the sixth ribs (150) on the opposite sides of the adjacent prefabricated rings (110) are connected; A fourth casting material is cast into the gap between adjacent prefabricated rings (110) to seal the sixth rib (150), thereby fixing the adjacent prefabricated rings (110) in connection.

8. The prefabricated tower foundation device according to claim 6, characterized in that: The prefabricated ring (110) comprises at least two prefabricated ring pieces (120), and adjacent prefabricated ring pieces (120) are enclosed by a fifth connecting structure to form the prefabricated ring (110), wherein the fifth connecting structure comprises: a seventh rib connected to the prefabricated ring segment (120) and protruding from a side of the prefabricated ring segment (120) facing the adjacent prefabricated ring segment (120), wherein the seventh ribs on the opposite sides of the adjacent prefabricated ring segments (120) are connected; A fifth casting material is cast into the gap between adjacent prefabricated ring segments (120) to seal the seventh rib, thereby fixing the adjacent prefabricated ring segments (120) in connection.

9. The prefabricated tower foundation device according to claim 3, characterized in that: The first connecting end (210) is further provided with an adjustable supporting leg (211), the adjustable supporting leg (211) being connected to the first connecting end (210) and protruding from the first connecting end (210) on a side facing the bottom plate (300), the adjustable supporting leg (211) being used to support the lateral supporting component (200) when the fourth rib (620) and the third rib (610) are connected.

10. The prefabricated tower foundation device according to claim 1, characterized in that: The bottom plate (300) is provided with a first metal frame (330), and the first metal frame (330) comprises: A first metal plate (331) is embedded in the bottom of the base plate (300); A first transfer cable (332) is connected to the first metal plate (331) and protrudes to a side of the bottom plate (300) facing the central column (100).

11. The prefabricated tower foundation device according to claim 10, characterized in that: A first prestressed component is provided in the central column (100), and the first prestressed component comprises: A first sleeve (141) is embedded in the central column (100); A first prestressed cable (142) is movably inserted into the first sleeve (141), the first prestressed cable (142) comprising a first connector (143) for connecting to the first transition cable (332), and a first fixing portion that faces away from the first connector (143) and extends to the top of the transition section (400); A first fixing device, capable of being connected to the first fixing portion, is used to lock the first prestressed cable (142) at a preset stress after the first connector (143) and the first transition cable (332) are connected.

12. The prefabricated tower foundation device according to claim 11, characterized in that: The first sleeve (141) extends to the top of the transition section (400) and is used to inject a first adhesive into the first sleeve (141) after the first fixing device locks the first fixing portion.

13. The prefabricated tower foundation device according to claim 3, characterized in that: The bottom plate (300) is provided with a second metal frame (340), and the second metal frame (340) comprises: a second metal plate (341) embedded in the bottom of the base plate (300); A second transfer cable (342) connected to the second metal plate (341) and protruding between the bottom plate (300) and the side facing the first connection end (210); A second prestressed component (230) is provided in the lateral support component (200), and the second prestressed component (230) comprises: a second sleeve (231) embedded in the lateral support component (200); A second prestressed cable (232) is movably inserted into the second sleeve (231), wherein the second prestressed cable (232) comprises a second connector (233) for connecting to the second transition cable (342), and a second fixing portion that faces away from the second connector (233) and extends to the top of the transition section (400); The second fixing device (234) is connectable to the second fixing portion and is used to lock the second prestressed cable (232) at a preset stress after the second connector (233) and the second transfer cable (342) are connected.

14. The prefabricated tower foundation device according to claim 1, characterized in that: A bolt column (410) is provided in the transition section (400), the extension direction of the bolt column (410) is parallel to the axial direction of the central column (100), and one end of the bolt column (410) protrudes to the top of the transition section (400) for connection to the wind power tower (700).

15. The prefabricated segmented tower foundation device according to claim 14, characterized in that: A third sleeve is pre-buried in the transition section (400), the bolt column (410) is located in the third sleeve, the bolt column (410) corresponds to the third sleeve one-to-one, and the other end of the bolt column (410) protrudes to the bottom of the transition section (400).

16. The prefabricated tower foundation device according to claim 8, characterized in that: The transition section (400) is a prefabricated element. The transition section (400) includes a first connecting member, which is connected to the transition section (400) and located between the transition section (400) and the center column (100). The center column (100) is connected to a second connecting member (160) located between the transition section (400) and the center column (100). The second connecting member (160) is used to connect to the first connecting member. A sixth casting material is cast between the transition section (400) and the center column (100) to seal the second connecting member (160) and the first connecting member, so as to fix the transition section (400) and the center column (100) in connection.

17. The prefabricated segmented tower foundation device according to claim 16, characterized in that: The transition section (400) includes at least two transition section (400) pieces, and the transition section (400) piece is provided with an eighth rib, the eighth rib is connected to the transition section (400) piece and protrudes from the side of the transition section (400) piece facing the adjacent transition section (400) piece, and the eighth ribs on the opposite sides of the adjacent transition section (400) pieces are connected; the seventh casting material is poured into the gap between the adjacent transition section (400) pieces to seal the eighth rib, so that the adjacent transition section (400) pieces are fixedly connected.

18. The prefabricated tower foundation device according to claim 1, characterized in that: The transition section (400) is a prefabricated element. The transition section (400) includes a third connecting member, the third connecting member is connected to the transition section (400) and is located between the transition section (400) and the second connecting end (220). The second connecting end (220) is connected to a fourth connecting member (221) located between the transition section (400) and the second connecting end (220). The fourth connecting member (221) is used to connect to the third connecting member. An eighth casting material is cast between the transition section (400) and the second connecting end (220) to fix the transition section (400) and the second connecting end (220).

19. The prefabricated tower foundation device according to claim 1, characterized in that: The transition section (400) includes a prefabricated frame (420), the central column (100) is connected to a second connecting member (160) located between the prefabricated frame (420) and the central column (100), the second connecting end (220) is connected to a fourth connecting member (221) located between the prefabricated frame (420) and the second connecting end (220), the second connecting member (160) and the fourth connecting member (221) are used to connect to the prefabricated frame (420), and a ninth casting material is cast on the prefabricated frame (420), between the prefabricated frame (420) and the central column (100), and between the prefabricated frame (420) and the second connecting end (220) to form the transition section (400) fixedly connected to the central column (100) and the second connecting end (220).

20. The prefabricated segmented tower foundation device according to claim 1, characterized in that: There are at least two central columns (100), there are at least two transition sections (400), and the number of the transition sections (400) is consistent with that of the central columns (100). The transition sections (400) and the central columns (100) are alternately stacked from top to bottom. The bottom plate (300) is connected to the bottom central column (100). The lateral support components (200) are connected to the transition sections (400) and the bottom plate (300). The distances between the first connection ends (210) of the lateral support components (200) connected to different transition sections (400) and the central column (100) are different.

21. A method for installing a prefabricated segmented tower foundation device, applicable to the prefabricated segmented tower foundation device according to any one of claims 1 to 20, characterized in that: The manufacturing method comprises: Excavation and leveling of the site to form a construction surface (800); Finding an installation location for the central column (100) on site to install the central column (100); Laying the prefabricated bottom plate sheets (310) around the central column (100), and forming the bottom plate (300) by connecting adjacent prefabricated bottom plate sheets (310) via the third connecting structure (320); The central column (100) is fixedly connected to the bottom plate (300) via the first connection structure (500); Hoisting the lateral support component (200) to the support position and temporarily fixing it; The first connection end (210) of the lateral support component (200) is fixedly connected to the bottom plate (300) via the second connection structure (600); connecting the second connection end (220) of the lateral support component (200), the top of the central column (100), and the transition section (400) so that the second connection end (220) of the lateral support component (200) is fixedly connected to the central column (100); Backfill and compact the backfill material to complete the installation of the segmented prefabricated tower foundation unit.

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