Four-spliced power transmission line assembly type micro pile foundation and construction method thereof

Abstract

The invention provides a four-spliced power transmission line assembly type micro pile foundation and a construction method thereof, and belongs to the technical field of building prefabricated structures. The four-spliced power transmission line assembly type micro pile foundation comprises a first connecting main body, a second connecting main body and a third connecting main body, wherein the first connecting main body is provided with a first matching part, a second matching part and a third matching part; the second connecting main body is provided with a fourth matching part, the multiple first connecting main bodies are used for surrounding the second connecting main body in the vertical direction, the first matching parts of every two adjacent first connecting main bodies are used for being clamped with the second matching parts in the vertical direction, and the fourth matching parts of every two adjacent first connecting main bodies are used for being clamped with the third matching parts in the vertical direction; the detachable connecting pieces are used for connecting the second connecting main bodies with the first connecting main bodies and / or connecting the two adjacent first connecting main bodies; and the micro pile is used for being detachably connected with the first connecting main body. The miniature pile foundation can effectively improve the construction efficiency, and meanwhile the stability of a power transmission line tower is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of building prefabricated structures, and in particular relates to a four-piece transmission line assembled micro pile foundation and a construction method thereof. Background Art

[0002] Micropile foundation is a commonly used foundation treatment technology, especially suitable for areas with narrow sites and difficult construction. It is usually used to reinforce soft soil, swamps and other strata with low bearing capacity, improve the bearing capacity of the foundation, and support the foundations of structures such as buildings, bridges, and towers.

[0003] At present, it can be seen from the Chinese invention patent with application number "202311146508.8" and the Chinese invention patent with application number "202310517693.0" that during the construction of micro pile foundations of existing transmission lines, it is usually necessary to use formwork for on-site concrete pouring, which takes a long time and has low construction efficiency, which is not conducive to the rapid construction of micro pile foundations. Summary of the invention

[0004] The technical problem to be solved by the present invention is how to improve the construction efficiency of micro pile foundation while ensuring the stability of transmission line towers. In view of the shortcomings of the prior art, a four-piece transmission line assembled micro pile foundation and a construction method thereof are provided.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] In a first aspect, the present invention provides a four-piece transmission line assembled micropile foundation, comprising:

[0007] A first connecting body, on which a first matching portion, a second matching portion and a third matching portion are provided;

[0008] A second connecting body, wherein the second connecting body is provided with a fourth matching portion, a plurality of the first connecting bodies are used to surround the second connecting body in a vertical direction, the first matching portions of two adjacent first connecting bodies are used to engage with the second matching portion along the vertical direction, and the fourth matching portion is used to engage with the third matching portion along the vertical direction;

[0009] a detachable connecting member, the detachable connecting member being used to connect the second connecting body and the first connecting body, and / or two adjacent first connecting bodies;

[0010] A micro pile is used to be detachably connected to the first connecting body.

[0011] Compared with the prior art, the beneficial effects of the four-piece transmission line assembled micropile foundation of the present invention include: a first connection body, a second connection body, a detachable connection piece and a micropile are arranged to form a four-piece transmission line assembled micropile foundation, wherein the first connection body is provided with a first matching portion and a second matching portion, and a plurality of first connection bodies can be arranged around the second connection body in a vertical direction, and the first matching portions of two adjacent first connection bodies are used to engage with the second matching portion in a vertical direction, and the foundation part of the prefabricated foundation of the four-piece transmission line assembled micropile foundation can be formed by mutual engagement of the plurality of first connection bodies, and the first connection body can be arranged on a vehicle. The prefabrication is completed in 24 hours, and the foundation part of the prefabricated pedestal is divided into multiple first connection bodies, which can be easily transported to the construction site and directly assembled on the construction site without on-site pouring, which effectively improves the construction convenience of the prefabricated pedestal and improves the construction efficiency. The first matching part and the second matching part are engaged in the vertical direction, so that the two adjacent first connection bodies can limit each other in the vertical direction. In this way, after the construction of the prefabricated pedestal is completed, the resistance of the prefabricated pedestal to the external force in the vertical direction can be guaranteed, which not only ensures the structural stability of the prefabricated pedestal, but also improves the pull-out performance of the four-piece transmission line assembled micro-pile foundation after the construction is completed, thereby ensuring the transmission line tower. Stability; on this basis, a third matching portion is further provided on the first connecting body, and a fourth matching portion is provided on the second connecting body, wherein the fourth matching portion can be engaged with the third matching portion in the vertical direction, and the second connecting body and the first connecting body form a prefabricated foundation, which can be transported to the construction site after the prefabrication of the second connecting body is completed in the workshop for assembly with the first connecting body, thereby completing the construction of the prefabricated foundation without on-site pouring, further improving the construction efficiency, and the third matching portion and the fourth matching portion are engaged in the vertical direction, which can make the second connecting body and the first connecting body limit each other in the vertical direction, further improving the vertical stability of the prefabricated foundation. The ability to resist external forces can ensure the stability of the transmission line tower; in addition, the detachable connecting piece can connect the second connecting body with the first connecting body and / or two adjacent first connecting bodies, so that a stable connection between the prefabricated cap components can be achieved through the detachable connecting piece, thereby improving the overall stability of the prefabricated cap. At the same time, the micropile can be detachably connected to the first connecting body, so that during on-site construction, the micropile can be directly connected to the first connecting body to achieve the connection between the micropile and the prefabricated cap, and the micropile can be penetrated into the foundation, thereby achieving a stable connection between the prefabricated cap and the foundation through the micropile, thereby ensuring the stability of the transmission line tower.

[0012] Optionally, the first matching portion and the second matching portion are both located on the side wall of the first connecting body along the horizontal direction and are arranged adjacent to each other around the vertical direction. The first matching portion is recessed along the horizontal direction to form a first groove, and the second matching portion is protruded along the horizontal direction to form a first protrusion. The first groove of one first connecting body is used for the first protrusion of another first connecting body to be inserted.

[0013] Optionally, the third matching portion is located on the side wall of the first connecting body along the horizontal direction and between the first matching portion and the second matching portion, the third matching portion is recessed along the horizontal direction to form a second groove, the fourth matching portion is located on the side wall of the second connecting body along the horizontal direction and protrudes along the horizontal direction to form a second protrusion, and the second protrusion is used to be placed in the second groove.

[0014] Optionally, the detachable connecting member includes a first prestressed connecting member, and the first connecting body and the second connecting body are both provided with first prestressed channels that are interconnected, and the first prestressed channels are extended along the horizontal direction. The first prestressed connecting member is used to pass through the first prestressed channels and is detachably connected to the first connecting body.

[0015] Optionally, the detachable connecting member also includes a second prestressed connecting member, and the first connecting body is also provided with a second prestressed channel extending along the horizontal direction, the second prestressed channel and the first prestressed channel are arranged at intervals along the vertical direction, the second prestressed channel of one first connecting body is used to be connected with the corresponding second prestressed channel of another first connecting body, and the second prestressed connecting member is used to pass through the second prestressed channel and be detachably connected to the first connecting body.

[0016] Optionally, the micropile includes a pile foundation and a connecting assembly, and the first connecting body is further provided with a mounting hole penetrating along the vertical direction, the upper end of the pile foundation passes through the mounting hole along the vertical direction, and is detachably connected to the top of the first connecting body through the connecting assembly.

[0017] Optionally, the connecting assembly includes a pile driving plate and a connecting piece, the connecting piece is pre-buried in the first connecting body and extends out of the top wall of the first connecting body, the pile driving plate is detachably connected to the upper end of the pile foundation, covers the top wall of the first connecting body, and is detachably connected to the connecting piece.

[0018] Optionally, the four-piece transmission line assembled micro pile foundation further includes a tower foot, and the tower foot is detachably mounted on the top wall of the second connecting body.

[0019] Optionally, the tower foot includes a bottom plate and a cross plate, the bottom plate is detachably mounted on the top wall of the second connection body, the cross plate is cross-arranged on the bottom plate and is integrally formed with the bottom plate.

[0020] In a second aspect, the present invention further provides a construction method for a four-piece transmission line assembled micropile foundation, comprising:

[0021] S1, a first connection body, a second connection body and a micropile of a prefabricated four-piece transmission line assembled micropile foundation;

[0022] S2, transporting the first connection body, the second connection body, the detachable connection piece and the micro pile to a construction site;

[0023] S3, arranging a plurality of the first connection bodies around the second connection body in a vertical direction, so that the first matching portions and the second matching portions of two adjacent first connection bodies are engaged along the vertical direction, and the fourth matching portion of the second connection body is engaged with the third matching portion of the first connection body along the vertical direction;

[0024] S4, connecting the second connection body and the first connection body, and / or two adjacent first connection bodies, through a detachable connection piece;

[0025] S5, performing a pile-pressing operation on the micropile to make the micropile reach a preset depth, and connecting the micropile and the first connecting body;

[0026] S6. Filling adhesive material between any two of the first connection body, the second connection body and the micropile.

[0027] Compared with the prior art, the beneficial effects of the construction method of the four-piece transmission line assembled micropile foundation of the present invention are the same as the beneficial effects of the four-piece transmission line assembled micropile foundation described above, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0029] Figure 1 : A partial structural diagram of a four-piece assembled micro-pile foundation for a power transmission line according to an embodiment of the present invention;

[0030] Figure 2 : A schematic structural diagram of a second connecting body in an embodiment of the present invention;

[0031] Figure 3 : A structural schematic diagram of a first connecting body in an embodiment of the present invention;

[0032] Figure 4 : Another structural schematic diagram of the first connecting body in an embodiment of the present invention;

[0033] Figure 5 : Schematic diagram of the installation structure of the tower foot in the embodiment of the present invention;

[0034] Figure 6 : A schematic diagram of the structure of a pile foundation in an embodiment of the present invention;

[0035] Figure 7 : Flow chart of the construction method of the four-piece transmission line assembled micropile foundation in an embodiment of the present invention.

[0036] Among them, 1-first connecting body, 11-first matching part, 12-second matching part, 13-third matching part, 14-installing hole, 2-second connecting body, 21-fourth matching part, 3-detachable connecting piece, 31-first prestressed connecting piece, 32-first prestressed channel, 33-second prestressed connecting piece, 34-second prestressed channel, 4-micro pile, 41-pile foundation, 42-connecting assembly, 421-pile plate, 422-connecting piece, 5-tower foot, 51-bottom plate, 52-cross plate. DETAILED DESCRIPTION

[0037] In order to better understand the present invention, the content of the present invention is further clearly set forth in conjunction with the embodiments below, but the protection content of the present invention is not limited to the following embodiments. In the following description, a large number of specific details are provided in order to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details.

[0038] It should be noted that the Z axis in the drawings represents the vertical direction, that is, the up and down position, and the positive direction of the Z axis represents the top, and the reverse direction of the Z axis represents the bottom; the Y axis in the drawings represents the horizontal direction, and is designated as the front and back position, and the positive direction of the Y axis represents the front side, and the reverse direction of the Y axis represents the back side; the X axis in the drawings represents the left and right position, and the positive direction of the X axis represents the right side, and the reverse direction of the X axis represents the left side. It should also be noted that the aforementioned Z axis, Y axis, and X axis are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0039] The term "including" and its variations used in this document are open inclusions, that is, "including but not limited to"; the term "based on" means "based at least in part on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc. mentioned in the present invention are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0040] It should be noted that the modifications of "one" and "plurality" mentioned in the present invention are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0041] In the first aspect, an embodiment of the present invention provides a four-piece transmission line assembled micropile foundation, including: a first connection body 1, on which a first matching portion 11, a second matching portion 12 and a third matching portion 13 are provided; a second connection body 2, on which a fourth matching portion 21 is provided, and a plurality of first connection bodies 1 are used to be arranged around the second connection body 2 in a vertical direction, and the first matching portion 11 of two adjacent first connection bodies 1 is used to engage with the second matching portion 12 in the vertical direction, and the fourth matching portion 21 is used to engage with the third matching portion 13 in the vertical direction; a detachable connecting member 3, the detachable connecting member 3 is used to connect the second connection body 2 with the first connection body 1, and / or two adjacent first connection bodies 1; a micropile 4, which is used to be detachably connected to the first connection body 1.

[0042] Specifically, Figure 1 As shown, the vertical direction is the Z-axis direction, and the horizontal direction is parallel to the XY plane; the engagement setting can be achieved by meshing with a toothed structure, or by abutting the upper and lower bumps; Figure 1 As shown, the first connecting body 1 can be a cubic structure or an arc-shaped three-dimensional structure. Figure 2 As shown, the second connecting body 2 can be a rectangular parallelepiped structure or a cylindrical structure; Figure 1 and Figure 2 As shown, the edge of the first connection body 1 can be provided with a notch running through from top to bottom, and multiple first connection bodies 1 are arranged around the second connection body 2. The notches on the multiple first connection bodies 1 can cooperate to form a hole for the second connection body 2 to pass through, and the third matching portion 13 is arranged on the inner wall of the notch.

[0043] In this embodiment, Figure 1As shown, a first connection body 1, a second connection body 2, a detachable connection member 3 and a micropile 4 are provided to form a four-piece transmission line assembled micropile foundation, wherein, Figure 1 and Figure 2 As shown, the first connecting body 1 is provided with a first matching portion 11 and a second matching portion 12, and a plurality of first connecting bodies 1 can be arranged around the second connecting body 2 in the vertical direction, and the first matching portions 11 of two adjacent first connecting bodies 1 are used to engage with the second matching portion 12 in the vertical direction. In this way, the foundation part of the prefabricated foundation of the assembled micro-pile foundation of the four-piece power transmission line can be formed by the mutual engagement of the plurality of first connecting bodies 1. The first connecting body 1 can be prefabricated in a workshop, and the foundation part of the prefabricated foundation is divided into a plurality of first connecting bodies 1, which can be easily transported to the construction site and directly assembled at the construction site without the need for on-site The pouring can effectively improve the construction convenience of the prefabricated foundation and the construction efficiency, and the first matching part 11 and the second matching part 12 are engaged in the vertical direction, so that the two adjacent first connection bodies 1 can limit each other in the vertical direction. In this way, after the construction of the prefabricated foundation is completed, the resistance of the prefabricated foundation to the external force in the vertical direction can be guaranteed, which can not only ensure the structural stability of the prefabricated foundation, but also improve the anti-pulling performance of the assembled micro-pile foundation of the four-piece transmission line after the construction is completed, thereby ensuring the stability of the transmission line tower; on this basis, a third matching part 13 is further provided on the first connection body 1, and a fourth matching part 14 is provided on the second connection body 2 21, wherein the fourth matching portion 21 can be engaged with the third matching portion 13 in the vertical direction. In this way, the second connection body 2 and the first connection body 1 form a prefabricated foundation. After the second connection body 2 is prefabricated in the workshop, it can be transported to the construction site for assembly with the first connection body 1 to complete the construction of the prefabricated foundation without on-site pouring, further improving the construction efficiency. The third matching portion 13 and the fourth matching portion 21 are engaged in the vertical direction, so that the second connection body 2 and the first connection body 1 can be mutually limited in the vertical direction, further improving the resistance of the prefabricated foundation to external forces in the vertical direction, thereby ensuring the transmission line The stability of the tower; in addition, the detachable connecting member 3 can connect the second connecting body 2 with the first connecting body 1 and / or two adjacent first connecting bodies 1, so that the stable connection between the prefabricated foundation components can be achieved through the detachable connecting member 3, thereby improving the overall stability of the prefabricated foundation. At the same time, the micropile 4 can be detachably connected to the first connecting body 1, so that during on-site construction, the micropile 4 can be directly connected to the first connecting body 1, thereby achieving the connection between the micropile 4 and the prefabricated foundation, and the micropile 4 can be penetrated into the foundation, thereby achieving the stable connection between the prefabricated foundation and the foundation through the micropile 4, thereby ensuring the stability of the transmission line tower.

[0044] Optionally, the first matching portion 11 and the second matching portion 12 are both located on the side wall of the first connecting body 1 along the horizontal direction, and are arranged adjacent to each other in the vertical direction. The first matching portion 11 is recessed along the horizontal direction to form a first groove, and the second matching portion 12 is protruded along the horizontal direction to form a first protrusion. The first groove of a first connecting body 1 is used for the first protrusion of another first connecting body 1 to be placed therein.

[0045] Specifically, Figure 3 As shown, the first groove and the first protrusion are both strip-shaped structures and extend in the horizontal direction. Of course, the first groove and the first protrusion may also be point-shaped structures. For example, the first groove is a cylindrical groove and the first protrusion is a cylindrical protrusion.

[0046] In this optional embodiment, if Figure 3 As shown, the first matching portion 11 and the second matching portion 12 are both arranged on the side wall of the first connection body 1 along the horizontal direction, and the first matching portion 11 and the second matching portion 12 are arranged adjacent to each other around the vertical direction. In this way, when multiple first connection bodies 1 are matched and engaged, one first connection body 1 can be aligned and engaged with the second matching portion 12 on another first connection body 1 through the first matching portion 11 thereon, and at the same time, the second matching portion 12 thereon can be aligned and engaged with the first matching portion 11 of another first connection body 1, so that a ring structure surrounding the vertical direction is formed by sequential alignment and engagement, which is convenient for surrounding the second connection body 2 and ensuring the shape stability of the prefabricated foundation after the engagement is completed; on this basis, Figure 3 As shown, the first matching portion 11 is recessed in the horizontal direction to form a first groove, and the second matching portion 12 is protruded in the horizontal direction to form a first protrusion. In this way, the first groove of a first connecting body 1 can be inserted into the first protrusion of another first connecting body 1, so that the upper and lower inner walls of the first groove are against the upper and lower outer walls of the first protrusion to achieve mutual limitation of the two adjacent first connecting bodies 1, thereby ensuring the structural stability and pull-out resistance of the assembled prefabricated foundation.

[0047] Optionally, the third matching portion 13 is located on the side wall of the first connecting body 1 along the horizontal direction, and is located between the first matching portion 11 and the second matching portion 12. The third matching portion 13 is recessed in the horizontal direction to form a second groove. The fourth matching portion 21 is located on the side wall of the second connecting body 2 along the horizontal direction, and protrudes in the horizontal direction to form a second protrusion. The second protrusion is used to be placed in the second groove.

[0048] Specifically, Figure 2 and Figure 3 As shown, the second groove and the second protrusion are both strip structures and are extended in the horizontal direction. Of course, the second groove and the second protrusion can also be point structures. For example, the second groove is a cylindrical groove and the second protrusion is a cylindrical protrusion; the fourth matching portion 21 can be distributed in a ring shape around the second connecting body 2.

[0049] In this optional embodiment, if Figure 2 and Figure 3 As shown, the third matching portion 13 is arranged on the side wall of the first connecting body 1 along the horizontal direction, and is located between the first matching portion 11 and the second matching portion 12, and the fourth matching portion 21 is located on the side wall of the second connecting body 2 along the horizontal direction, so that it can ensure that the fourth matching portion 21 and the third matching portion 13 are aligned and engaged, and it can also avoid mutual interference when the two adjacent first connecting bodies 1 are aligned and engaged with the first connecting body 1 and the second connecting body 2, thereby ensuring the stability of the engagement; on this basis, the third matching portion 13 is recessed in the horizontal direction to form a second groove, and the fourth matching portion 21 is protruded in the horizontal direction to form a second protrusion, and the second protrusion is used to be placed in the second groove. In this way, the upper and lower inner walls of the second groove can be used to resist the upper and lower outer walls of the second protrusion to achieve mutual limitation of the first connecting body 1 and the second connecting body 2, thereby ensuring the structural stability and pull-out resistance of the assembled prefabricated platform.

[0050] Optionally, the detachable connecting member 3 includes a first prestressed connecting member 31, and the first connecting body 1 and the second connecting body 2 are both provided with first prestressed channels 32 that are interconnected, and the first prestressed channels 32 are extended in a horizontal direction. The first prestressed connecting member 31 is used to penetrate the first prestressed channels 32 and is detachably connected to the first connecting body 1.

[0051] Specifically, Figure 1 , Figure 2 and Figure 3 As shown, there are multiple first prestressed channels 32, and the multiple first prestressed channels 32 are divided into two groups. The first prestressed channels 32 in each group are parallel to each other, and the two groups of first prestressed channels 32 are cross-arranged with each other, and the angle can be 90 degrees. At the same time, the first prestressed connector 31 is composed of a first prestressed tendon and a first anchor bolt, wherein the two groups of first prestressed channels 32 are spaced apart in the vertical direction, and the multiple first prestressed tendons are inserted into the first prestressed channels 32 one by one to realize the connection between the first connection body 1 and the second connection body 2. At the same time, the first anchor bolt fixes the end of the first prestressed tendon to ensure the connection stability of the first connection body 1 and the second connection body 2. It should be noted that in order to ensure the upper and lower misalignment of the two groups of first prestressed channels 32, the first connection body 1 is divided into two types, one is as Figure 3 As shown, a Figure 4 As shown, the first prestressed holes 32 on the two first connection bodies 1 are arranged at different positions. Figure 2As shown, the first prestressed channels 32 on two adjacent surfaces of the second connecting body 2 have different upper and lower positions, wherein the position of the first prestressed channels 32 on one surface is the same as the setting position of the first prestressed channels 32 on one first connecting body 1, and the position of the first prestressed channels 32 on the other surface is the same as the setting position of the first prestressed channels 32 on another first connecting body 1.

[0052] In this optional embodiment, if Figures 1 to 4 As shown, a first prestressed connector 31 is provided to connect the first connection body 1 and the second connection body 2, wherein the first connection body 1 and the second connection body 2 are both provided with first prestressed channels 32 that are interconnected, and the first prestressed channels 32 are extended in the horizontal direction, so that the first prestressed connector 31 can pass through the first prestressed channel 32 and be detachably connected to the first connection body 1, so that the relative position stability of the first connection body 1 and the second connection body 2 in the horizontal direction can be achieved through the first prestressed connector 31, and at the same time, the first prestressed connector 31 can be used to limit the first connection body 1 and the second connection body 2 in the vertical direction, thereby ensuring the structural stability and pull-out resistance of the assembled prefabricated foundation.

[0053] Optionally, the detachable connecting member 3 also includes a second prestressed connecting member 33, and the first connecting body 1 is also provided with a second prestressed channel 34 extending in the horizontal direction. The second prestressed channel 34 and the first prestressed channel 32 are arranged at intervals in the vertical direction. The second prestressed channel 34 of a first connecting body 1 is used to be connected with the corresponding second prestressed channel 34 of another first connecting body 1, and the second prestressed connecting member 33 is used to penetrate the second prestressed channel 34 and be detachably connected to the first connecting body 1.

[0054] like Figure 1 , Figure 2 and Figure 3 As shown, there are multiple second prestressed channels 34, and the multiple second prestressed channels 34 are divided into two groups. The second prestressed channels 34 in each group are parallel to each other, and the two groups of second prestressed channels 34 are cross-arranged with each other, and the angle can be 90 degrees. At the same time, the second prestressed connector 33 is composed of second prestressed tendons and second anchor bolts, wherein the two groups of second prestressed channels 34 are spaced apart in the vertical direction, and the multiple second prestressed tendons are inserted into the second prestressed channels 34 one by one to realize the connection of two adjacent first connection bodies 1. At the same time, the second anchor bolt fixes the end of the second prestressed tendon to ensure the connection stability of the two adjacent first connection bodies 1. It should be noted that in order to ensure the upper and lower misalignment of the two groups of second prestressed channels 34, the first connection body 1 is divided into two types, one is as Figure 3 As shown, a Figure 4As shown, the second prestressed channels 34 on the two first connecting bodies 1 are arranged at different positions. The second prestressed channels 34 on the surfaces of one first connecting body 1 are offset up and down toward the other two adjacent first connecting bodies 1. Of course, in order to avoid interference between the second prestressed channels 34 and the first prestressed channels 32, the second prestressed channels 34 and the first prestressed channels 32 are also spaced apart up and down.

[0055] In this optional embodiment, if Figures 1 to 4 As shown, a second prestressed connector 33 is provided to connect two adjacent first connection bodies 1, wherein the two adjacent first connection bodies 1 are provided with second prestressed channels 34 that are interconnected, and the second prestressed channels 34 are extended in the horizontal direction, so that the second prestressed connector 33 can pass through the second prestressed channels 34 and be detachably connected to the first connection bodies 1, so that the relative position stability of the two adjacent first connection bodies 1 in the horizontal direction can be achieved through the second prestressed channels 34, and at the same time, the second prestressed connector 33 can be used to limit the position of the two adjacent first connection bodies 1 in the vertical direction, thereby ensuring the structural stability and pull-out resistance of the assembled prefabricated foundation.

[0056] Optionally, the micropile 4 includes a pile foundation 41 and a connecting assembly 42. The first connecting body 1 is also provided with a mounting hole 14 that penetrates in the vertical direction. The upper end of the pile foundation 41 passes through the mounting hole 14 in the vertical direction and is detachably connected to the top of the first connecting body 1 through the connecting assembly 42.

[0057] Specifically, Figure 6 As shown, the pile foundation 41 is a cylindrical structure, which can be formed by prefabricating and pouring a template. Correspondingly, the pile foundation 41 can also be a spiral structure or a prismatic structure.

[0058] In this optional embodiment, if Figure 1 and Figure 6 As shown, a pile foundation 41 and a connecting assembly 42 are provided to form a micro pile 4, wherein the first connecting body 1 is further provided with a mounting hole 14 which is arranged to penetrate in the vertical direction, so that the pile foundation 41 can conveniently penetrate the mounting hole 14, and the upper end of the pile foundation 41 can be detachably connected to the top of the first connecting body 1 through the connecting assembly 42, thereby ensuring the connection stability between the micro pile 4 and the prefabricated foundation and improving the connection convenience.

[0059] Optionally, the connecting component 42 includes a pile driving plate 421 and a connecting member 422, the connecting member 422 is pre-buried in the first connecting body 1 and extends out of the top wall of the first connecting body 1, the pile driving plate 421 is detachably connected to the upper end of the pile foundation 41, covers the top wall of the first connecting body 1, and is detachably connected to the connecting member 422.

[0060] Specifically, Figure 1 , Figure 3 and Figure 4 As shown, the connecting piece 422 includes embedded studs and nuts, wherein a portion of the embedded studs is embedded in the first connecting body 1, and another portion extends out of the top wall of the first connecting body 1, and the nut can be threadedly connected to the embedded studs, and a plurality of embedded studs are circumferentially spaced along the edge of the mounting hole 14.

[0061] In this optional embodiment, if Figure 1 , Figure 3 and Figure 4 As shown, a pile driving plate 421 and a connecting member 422 are provided to form a connecting assembly 42, wherein the connecting member 422 is pre-buried in the first connecting body 1 and extends out of the top wall of the first connecting body 1, and the pile driving plate 421 is detachably connected to the upper end of the pile foundation 41, covers the top wall of the first connecting body 1, and is detachably connected to the connecting member 422. In this way, the pile driving plate 421 can be abutted against the top wall of the first connecting body 1, thereby lifting the pile foundation 41 through the supporting force given by the first connecting body 1, thereby ensuring the connection stability between the pile foundation 41 and the first connecting body 1.

[0062] Optionally, the four-piece transmission line assembled micro pile foundation further includes a tower foot 5 , which is detachably mounted on the top wall of the second connection body 2 .

[0063] Specifically, Figure 2 and Figure 5 As shown, the tower foot 5 is detachably connected to the second connection body 2 through a nut and a stud pre-embedded on the top wall of the second connection body 2.

[0064] In this optional embodiment, if Figure 2 and Figure 5 As shown, in order to ensure the connection between the prefabricated foundation and the tower body of the transmission line tower, a tower foot 5 is further provided, wherein the tower foot 5 is detachably mounted on the top wall of the second connecting body 2, so that the connection between the tower body and the prefabricated foundation can be achieved through the connection between the tower foot 5 and the tower body, thereby ensuring the installation stability of the transmission line tower, and the detachable connection between the tower foot 5 and the second connecting body 2 can improve the connection convenience of the tower foot 5, thereby improving the construction efficiency.

[0065] Optionally, the tower foot 5 includes a bottom plate 51 and a cross plate 52 . The bottom plate 51 is detachably mounted on the top wall of the second connecting body 2 . The cross plate 52 is cross-arranged on the bottom plate 51 and is integrally formed with the bottom plate 51 .

[0066] Specifically, the one-piece molding setting can be achieved by welding molding or one-piece stamping molding, and the bottom plate 51 is detachably connected to the second connection body 2 through nuts and studs embedded in the top wall of the second connection body 2.

[0067] In this optional embodiment, if Figure 5 As shown, a base plate 51 and a cross plate 52 are provided to form a tower foot 5, wherein the base plate 51 is detachably mounted on the top wall of the second connecting body 2 to ensure the connection stability and convenience between the tower foot 5 and the second connecting body 2, and on this basis, the cross plate 52 is cross-arranged on the base plate 51 and is integrally formed with the base plate 51. This arrangement can not only improve the supporting surface of the base plate 51 when supporting the cross plate 52, thereby improving the supporting performance of the prefabricated foundation on the tower body connected to the cross plate 52, but also improve its stability when connected to the tower body through the cross plate 52.

[0068] In the second aspect, an embodiment of the present invention provides a construction method for a four-piece transmission line assembled micropile foundation, comprising: S1, prefabricating a first connection body 1, a second connection body 2 and a micropile 4 of the four-piece transmission line assembled micropile foundation; S2, transporting the first connection body 1, the second connection body 2, the detachable connection member 3 and the micropile 4 to the construction site; S3, arranging a plurality of first connection bodies 1 around the second connection body 2 in a vertical direction so that the first matching portion 11 and the second matching portion 12 of two adjacent first connection bodies 1 are engaged in the vertical direction, and the fourth matching portion 21 of the second connection body 2 is engaged in the vertical direction with the third matching portion 13 of the first connection body 1; S4, connecting the second connection body 2 with the first connection body 1, and / or two adjacent first connection bodies 1 through the detachable connection member 3; S5, performing a pile pressing operation on the micropile 4 to make the micropile 4 reach a preset depth, and connecting the micropile 4 and the first connection body 1; S6, filling an adhesive material between any two of the first connection body 1, the second connection body 2 and the micropile 4.

[0069] like Figure 7 As shown, the technical effect of the construction method of the four-piece transmission line assembled micropile foundation in this embodiment is similar to the technical effect of the four-piece transmission line assembled micropile foundation described above, and will not be repeated here.

[0070] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A four-piece transmission line assembled micropile foundation, characterized in that: include: A first connecting body (1), wherein the first connecting body (1) is provided with a first matching portion (11), a second matching portion (12) and a third matching portion (13); A second connecting body (2), wherein the second connecting body (2) is provided with a fourth matching portion (21), a plurality of the first connecting bodies (1) are arranged around the second connecting body (2) in a vertical direction, the first matching portions (11) of two adjacent first connecting bodies (1) are used to engage with the second matching portion (12) along the vertical direction, and the fourth matching portion (21) is used to engage with the third matching portion (13) along the vertical direction; a detachable connecting member (3), the detachable connecting member (3) being used to connect the second connecting body (2) and the first connecting body (1), and / or two adjacent first connecting bodies (1); A micro pile (4), wherein the micro pile (4) is used to be detachably connected to the first connecting body (1).

2. The four-piece transmission line assembled micro pile foundation as claimed in claim 1, characterized in that: The first matching portion (11) and the second matching portion (12) are both located on the side wall of the first connecting body (1) along the horizontal direction and are arranged adjacent to each other around the vertical direction; the first matching portion (11) is recessed along the horizontal direction to form a first groove; the second matching portion (12) is protruded along the horizontal direction to form a first protrusion; the first groove of one first connecting body (1) is used for the first protrusion of another first connecting body (1) to be placed therein.

3. The four-piece transmission line assembled micro pile foundation as claimed in claim 2, characterized in that: The third matching portion (13) is located on the side wall of the first connecting body (1) along the horizontal direction, and is located between the first matching portion (11) and the second matching portion (12); the third matching portion (13) is recessed along the horizontal direction to form a second groove; the fourth matching portion (21) is located on the side wall of the second connecting body (2) along the horizontal direction, and is protruded along the horizontal direction to form a second protrusion; the second protrusion is used to be placed in the second groove.

4. The four-piece transmission line assembled micro pile foundation as claimed in claim 3, characterized in that: The detachable connecting member (3) comprises a first prestressed connecting member (31); the first connecting body (1) and the second connecting body (2) are both provided with first prestressed channels (32) that are interconnected; the first prestressed channels (32) are extended along the horizontal direction; the first prestressed connecting member (31) is used to penetrate the first prestressed channels (32) and is detachably connected to the first connecting body (1).

5. The four-piece transmission line assembled micro pile foundation as claimed in claim 4, characterized in that: The detachable connecting member (3) further comprises a second prestressed connecting member (33); the first connecting body (1) is further provided with a second prestressed hole (34) extending along the horizontal direction; the second prestressed hole (34) and the first prestressed hole (32) are arranged at intervals along the vertical direction; the second prestressed hole (34) of one first connecting body (1) is used to be correspondingly connected to the second prestressed hole (34) of another first connecting body (1); the second prestressed connecting member (33) is used to penetrate the second prestressed hole (34) and be detachably connected to the first connecting body (1).

6. The four-piece assembled micro pile foundation for power transmission lines according to any one of claims 1 to 5, characterized in that: The micro pile (4) comprises a pile base (41) and a connecting assembly (42); the first connecting body (1) is also provided with a mounting hole (14) penetrating along the vertical direction; the upper end of the pile base (41) passes through the mounting hole (14) along the vertical direction and is detachably connected to the top of the first connecting body (1) via the connecting assembly (42).

7. The four-piece transmission line assembled micro pile foundation as claimed in claim 6, characterized in that: The connection assembly (42) comprises a pile-pressing plate (421) and a connecting piece (422); the connecting piece (422) is pre-buried in the first connection body (1) and extends out of the top wall of the first connection body (1); the pile-pressing plate (421) is detachably connected to the upper end of the pile foundation (41), covers the top wall of the first connection body (1), and is detachably connected to the connecting piece (422).

8. The four-piece assembled micro pile foundation for power transmission lines according to any one of claims 1 to 5, characterized in that: It also comprises a tower foot (5), and the tower foot (5) is detachably mounted on the top wall of the second connecting body (2).

9. The four-piece transmission line assembled micro pile foundation as claimed in claim 8, characterized in that: The tower foot (5) comprises a bottom plate (51) and a cross plate (52); the bottom plate (51) is detachably mounted on the top wall of the second connecting body (2); the cross plate (52) is arranged on the bottom plate (51) in a cross shape and is integrally formed with the bottom plate (51).

10. A construction method for a four-piece transmission line assembled micropile foundation, characterized in that: include: S1, a first connection body (1), a second connection body (2) and a micropile (4) of a prefabricated four-piece transmission line assembled micropile foundation; S2, transporting the first connection body (1), the second connection body (2), the detachable connection piece (3) and the micropile (4) to a construction site; S3, arranging a plurality of the first connection bodies (1) around the second connection body (2) in a vertical direction, so that the first matching portions (11) and the second matching portions (12) of two adjacent first connection bodies (1) are engaged along the vertical direction, and the fourth matching portion (21) of the second connection body (2) is engaged with the third matching portion (13) of the first connection body (1) along the vertical direction; S4, connecting the second connection body (2) and the first connection body (1), and / or two adjacent first connection bodies (1), through a detachable connection piece (3); S5, performing a pile-pressing operation on the micropile (4) to push the micropile (4) to a preset depth, and connecting the micropile (4) and the first connecting body (1); S6. Filling adhesive material between any two of the first connection body (1), the second connection body (2) and the micropile (4).

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