Modularized power transmission line anchor rod foundation capable of being rapidly assembled and construction method

Abstract

The invention belongs to the technical field of construction of electric tower base platforms, particularly relates to a modular power transmission line anchor rod foundation capable of being quickly assembled and a construction method, and aims at solving the problem that the corrosion resistance and durability of most assembled prefabricated parts in the prior art cannot be guaranteed due to the fact that the assembled prefabricated parts are light steel structures, the following scheme is provided: the modular power transmission line anchor rod foundation comprises basic modules which are integrally of a prismatic structure; first side lugs are reserved in the positions, close to the middle of the bottom end, of the outer walls of the two opposite sides of the basic module, a vertical second grouting hole is formed in the middle of the upper surface of each first side lug, and additional modules of an H-shaped structure are slidably clamped to the positions, located on the outer walls of the first side lugs, of the basic module. According to the invention, all the components are more convenient to connect, and construction can be completed only by hoisting in sequence on site and then performing local grouting; and the tension load transmitted from the upper iron tower can be uniformly transmitted to the additional module through tenon-and-mortise connection until reaching the combined rib rods of the additional module, so that the integral structure is more tightly engaged with the rock mass.

Description

Technical Field

[0001] The present invention relates to the technical field of the construction of electric tower bases, and particularly relates to a modular transmission line anchor foundation that can be quickly assembled and a construction method thereof. Background Art

[0002] The traditional cast-in-situ column plate anchor foundation for transmission lines is generally used in geological conditions with a relatively thin overburden layer such as upper soil and lower rock. It consists of three parts: an anchor rod, a bottom plate, and a main column. The construction sequence is to first excavate to the elevation of the bottom surface of the bottom plate, then use an anchor rod drilling rig to drill holes in the rock layer, and then pour concrete or mortar together with the anchor bars into the rock holes. After the grouting solidifies, the anchor rod, concrete, and rock form an integral body. Then, the steel bars of the bottom plate and the main column are tied, and the anchor bolts are embedded at the same time, and the concrete is poured. After reaching the strength, the construction is completed.

[0003] At present, most of the rock anchor foundations and construction methods still adopt the method of on-site binding and pouring of steel bars. The transportation of materials such as cement, sand and gravel, and steel bars is difficult, and it is easy to cause material waste and environmental pollution; the cast-in-situ foundation requires on-site maintenance of concrete, which is easily affected by the construction environment, resulting in the concrete quality not meeting the expected standards; in order to achieve factory prefabrication and on-site assembly, after retrieval, the upper part of the anchor foundation of some existing schemes is connected to the iron tower with a metal structure. Although it is light and easy to assemble, its durability cannot be guaranteed. Adopting the overall precast concrete pile cap scheme, the weight is relatively large, which is not conducive to transportation and installation; therefore, we propose a new type of modular transmission line anchor foundation that can be quickly assembled and a construction method thereof. Summary of the Invention

[0004] Aiming at the technical problem that the corrosion resistance and durability of most of the assembled prefabricated parts in the prior art cannot be guaranteed, the present invention adopts the following technical solutions: A modular transmission line anchor foundation that can be quickly assembled includes a basic module with a prismatic structure as a whole. On the middle part of the bottom ends of the opposite outer walls of the basic module, ear plates one are reserved, and a vertical grouting hole two is opened in the middle of the upper surface of the ear plate one. On the outer walls of the basic module where the ear plates one are located, additional modules with an overall H-shaped structure are slidably clamped, and a grouting hole one with the same axis and the same diameter as the grouting hole two on the corresponding side is opened on the middle cross plate of the additional module; the same combined reinforcing bar is inserted into the grouting hole one and the grouting hole two, and the combined reinforcing bar includes multiple anchor bars axially butted together. The same connecting sleeve is sleeved and fixed between two adjacent anchor bars. Annular locking grooves are opened on the circumferential outer walls of the anchor bars near the edges of both ends, and locking mechanisms adapted to the annular locking grooves are arranged on the circumferential inner walls of the connecting sleeves; a square main column with an area smaller than the upper surface area of the basic module is reserved in the middle of the upper surface of the basic module, and bolt insertion holes are opened near the four corners of the upper surface of the square main column, and anchor bolts are inserted into the bolt insertion holes.

[0005] Preferably, symmetric connection lugs are reserved on both sides of the additional module near the upper middle part, and the two connection lugs in contact with adjacent additional modules are spliced into a tenon structure; and a steel-concrete tenon protrusion is reserved on the outer wall of the basic module below the tenon structure of adjacent additional modules, and the steel-concrete tenon protrusion is located between two adjacent side lugs one; and a steel bar framework vertically passing through the tenon structure on the corresponding side is fixed on the upper surface of the steel-concrete tenon protrusion, and a pin steel plate is sleeved and fixed on the upper surface of the tenon structure at the top end of the steel bar framework.

[0006] Preferably, docking pin holes with the same axis and the same aperture are opened in the middle of the tenon structure and the pin steel plate, and the redundant steel bar framework protruding above the pin steel plate is bent after assembly, which plays a role in preventing detachment. And during the later grouting process, the concrete can quickly flow into the steel bar framework below the tenon structure through the docking pin hole smoothly, and then the concrete on the upper and lower sides of the tenon structure forms a whole, improving the biting ability between adjacent additional modules and the overall tensile effect.

[0007] Preferably, externally convex hoisting bendable steel bars two are reserved on the lower surfaces of the connection lugs on both sides of the additional module, and the hoisting bendable steel bars two are respectively inserted into the steel bar frameworks on the corresponding sides after splicing, which not only facilitates binding during hoisting, but also improves the biting ability with the basic module; two J-shaped steel bars one that are centrosymmetric with each other are arranged below the middle cross plate of the additional module, and there is a gap between the J-shaped steel bars one and the anchor bars; U-shaped externally convex steel bars are fixed below each middle cross plate of the basic module, and the U-shaped externally convex steel bars are located below the J-shaped steel bars one; the height of the additional module is equal to the main height of the basic module "excluding the height of the square main column at its top end", the top end of the anchor bar is flush with the top end of the additional module, and a flat cut shoulder is opened on the outer wall of the anchor bar at the height of the U-shaped externally convex steel bar, and two parallel connecting rods are reserved above the middle cross plate of the additional module.

[0008] Preferably, two temporary anti-detachment grooves are opened on the upper surface of the basic module near the junction of each additional module, and a lapping strip that coincides with the temporary anti-detachment groove is reserved near the top end of the side surface of the additional module; during hoisting, as long as the lapping strip is clamped in the corresponding temporary anti-detachment groove, it can ensure good splicing between the additional module and the basic module, and then other components can be clamped or bound in turn.

[0009] Preferably, a cylindrical sunk groove is formed in the middle of the lower surface of the basic module, and a rectangular through hole communicating with the circumferential side wall of the cylindrical sunk groove is formed above the side surface of the basic module and above the steel-concrete tenon convex, so that the basic module can be hollowed out as much as possible during prefabrication, which is convenient for later casting to make the position of the outer casting form an integral body with the inside, and is also convenient for transportation operations before installation. The bottom diameter of the cylindrical sunk groove is larger than the length of the diagonal of the upper surface of the square main column, and an annular intermittent slide rail is provided at the bottom of the cylindrical sunk groove at the bottom orifice of each bolt jack. The bottom end of each anchor bolt is sleeved and fixed with an umbrella-shaped tensioning cap, and the umbrella-shaped tensioning cap is detachably clamped in the corresponding annular intermittent slide rail. The upper surface of the square main column is provided with a tower base plate sleeved on the four anchor bolts, and a central grouting hole I with the same diameter and vertical is formed in the middle of the tower base plate and the bottom of the cylindrical sunk groove.

[0010] Preferably, a plurality of stepped holes symmetrically distributed around the center are further formed on the upper surface of the basic module near the middle, and an auxiliary insertion rod is inserted into each stepped hole. The structure of the auxiliary insertion rod is the same as that of the anchor bar, and an anti-detachment sleeve is fixed above each stepped hole at the top end of the auxiliary insertion rod. A plurality of radially distributed struts are fixed on the circumferential outer wall of the anti-detachment sleeve. When the structural strength is required, a circle of auxiliary insertion rods can be added to improve the grip of the device.

[0011] Preferably, a reinforcing tension bar extending to the auxiliary insertion rod is inserted into each rectangular through hole, and a U-shaped clamping strip is fixed at one end of the reinforcing tension bar close to the auxiliary insertion rod. The U-shaped clamping strip is clamped on the corresponding planar shoulder to support the auxiliary insertion rod, ensuring that the device will not shake or move axially during grouting. A positioning groove is formed in the middle of the planar shoulder, and a positioning protrusion adapted to the positioning groove is reserved on one side of the two legs of the U-shaped clamping strip; the fixing and anti-detachment effect on the auxiliary insertion rod can be improved.

[0012] Preferably, grouting is carried out in the cylindrical sunken groove, the multiple stepped holes, and the space below the tenon structure. Grouting is also carried out in the spaces above and below the middle cross plate of the additional module. After the grouting solidifies, it forms the grouted part, which can not only make the whole more integrated, improve the tensile connection effect of each part, but also effectively protect the metal parts used for connection of each part, and improve the overall service life. The whole of the connecting sleeve is in a tubular structure, and a slurry replenishing hole is opened in the middle of the circumferential outer wall of the connecting sleeve. The structures at both ends of the connecting sleeve are symmetrical to each other, and threaded grooves are opened on the circumferential inner walls at both ends of the connecting sleeve. Threaded strips protruding outward are reserved at both ends of the anchor bar, and there is no threaded strip between the end of the anchor bar and the annular locking groove at the corresponding end. A plurality of rectangular holes distributed centrosymmetrically are opened near the middle of the circumferential outer wall of the connecting sleeve, and anti-retreat hook rods extending into the pipe are reserved at one ends of the inner walls of the rectangular holes close to the center of the device. The anti-retreat hook rod will be clamped in the corresponding annular locking groove to form a lock when the whole connecting sleeve is screwed in.

[0013] A construction method for a modular transmission line anchor foundation that can be quickly assembled includes the following steps: S1: Excavate a foundation pit with an area larger than the area of the top view after overall splicing. The depth of the foundation pit is greater than the height of the basic module, and the bottom of the foundation pit is leveled. Then, use an anchor drill to drill downward at the bottom of the foundation pit until reaching the rock formation to form a vertical rock hole, and the hole position corresponds to all the grouting holes; when necessary, rock holes corresponding to the positions of the stepped holes also need to be drilled. S2: Then, pass the anchor bolts upward from the bottom through the corresponding bolt insertion holes, and rotate and snap the umbrella-shaped tightening cap into the annular intermittent slide rail at the corresponding position; then hoist and place the basic module into the foundation pit, and align the grouting hole two in the middle of the first side ear with the rock hole at the bottom of the foundation pit; splice the anchor bars according to the depth of the rock hole, and cut the excess part with a cutting machine for standby. S3: Then, hoist the additional module. After all the hoisting and splicing are completed, lock the adjacent two additional modules with pin steel plates; then insert the anchor bars from above the grouting hole one of each additional module; tie the J-shaped steel bar one, the anchor bar, the connecting rod, and the U-shaped outward protruding steel bar at each additional module together with iron wire. S4: Paste hard boards on the periphery of the device, and then surround some soil so that the hard boards are closely attached to the surface of the device to prevent the grouting from running out of the mold; finally, grout the cylindrical sunken groove, the multiple stepped holes, and the space below the tenon structure; grout the spaces above and below the middle cross plate of the additional module.

[0014] The beneficial effects in the present invention are: 1. By setting up upward-protruding square main columns and additional modules connected to the sides of the basic modules with mortise and tenon joints, the connection between the various components is made more convenient. On-site construction only requires sequential hoisting and then local grouting to complete the construction. The tensile load from the upper tower can be evenly transmitted to the additional modules through the mortise and tenon joints, and then to the combined reinforcement bars of the additional modules, making the overall structure more tightly engaged with the rock mass.

[0015] 2. By setting up a tenon structure and a steel frame that can interlock with each other, and cooperating with a pin steel plate sleeved on the steel frame, two adjacent additional modules can be well pin-connected, and finally multiple additional modules can be enclosed around the basic module, which greatly enhances the integrity and makes the load distribution more uniform and scientific.

[0016] 3. By setting up the U-shaped protruding steel bar and the J-shaped steel bar 1, as well as the flat shoulder opened on the outer wall of the anchor bar, the J-shaped steel bar 1, the anchor bar, the connecting rod and the U-shaped protruding steel bar can be tied together with wire before the final combined pouring, and then the concrete can be poured, which can make the bonding performance between the anchor bar and the concrete stronger.

[0017] 4. By setting anchor bolts with umbrella-shaped tensioning caps at the bottom and coordinating with the setting of annular intermittent slide rails, not only can the anchor bolts be assembled on site, but the bonding performance between the bottom end of the anchor bolt and the concrete can be stronger after pouring. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a modular transmission line anchor foundation that can be quickly assembled, as proposed by the present invention; Figure 2 This is a schematic diagram of the overall structure of a modular transmission line anchor bolt foundation that can be quickly assembled, as proposed by the present invention; Figure 3 This is a top view of the assembled modular anchor foundation for power transmission lines proposed by the present invention; Figure 4 A modular transmission line anchor foundation that can be quickly assembled proposed by the present invention Figure 3 Schematic diagram of the cross-sectional structure along line AA; Figure 5 An exploded view of anchor bars and steel plate pins in a modular transmission line anchor foundation that can be quickly assembled, as proposed by the present invention; Figure 6 This is an assembly diagram of the anchor bolts and tower base plate in a modular transmission line anchor foundation that can be quickly assembled, as proposed by the present invention; Figure 7 A top view of a basic module of a modular transmission line anchor foundation that can be quickly assembled, as proposed by the present invention; Figure 8 A perspective view of an additional module in a quickly assembled modular transmission line anchor foundation proposed by the present invention; Figure 9 A perspective view of a basic module in a quickly assembled modular transmission line anchor foundation proposed by the present invention; Figure 10 An assembly drawing of a connecting sleeve in a quickly assembled modular transmission line anchor foundation proposed by the present invention; Figure 11 A sectional view of a connecting sleeve of a quickly assembled modular transmission line anchor foundation of the present invention in a working state.

[0019] In the figure: 1. Basic module; 101. Step hole; 102. U-shaped outward protruding steel bar; 103. Square main column; 104. Columnar sinking groove; 105. Rectangular through hole; 106. Central grouting hole 1; 107. Annular intermittent slide rail; 108. Bolt insertion hole; 109. Temporary anti-disengagement groove; 2. Anti-disengagement sleeve; 3. Tower base plate; 4. Anchor bolt; 5. Additional module; 501. J-shaped steel bar 1; 502. Connecting ear plate; 503. Connecting rod; 504. Lapping strip; 505. Lifting bendable steel bar 2; 506. Docking pin hole; 507. Grouting hole 1; 6. Anchor bar; 601. Annular locking groove; 602. Plane cut shoulder; 7. Connecting sleeve; 701. Rectangular hole; 702. Anti-retreat hook rod; 703. Grout replenishing hole; 8. Side ear 1; 801. Grouting hole 2; 9. Steel-concrete tenon convex; 10. Steel bar cage; 11. Pin steel plate; 12. Grouting part; 13. Reinforcing tension bar; 131. U-shaped strip; 14. Umbrella-shaped tension cap. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0021] In this embodiment, refer to Figures 1-11, A modular transmission line anchor foundation that can be quickly assembled, including a basic module 1 with a prismatic structure as a whole. The number of sides of the prism is an even number, which is an octagonal prism structure in this embodiment. On both outer walls of the basic module 1 on the opposite sides near the middle of the bottom end, there are reserved side ears 8. The number of side ears 8 is equal to half of the number of edges, and all the side ears 8 are centrally symmetrically distributed. And in the middle of the upper surface of the side ear 8, there is a vertical grouting hole 801. On the outer walls of the basic module 1 where the side ears 8 are located, there are slidingly clamped additional modules 5 with an overall H-shaped structure. And on the middle cross plate of the additional module 5, there is a grouting hole 507 that is coaxial and has the same diameter as the grouting hole 801 on the corresponding side; A same combined reinforcement bar for inserting into a pre-drilled rock hole is inserted into the grouting hole 507 and the grouting hole 801. The outer diameter of the combined reinforcement bar is smaller than the diameter of the rock hole to ensure that concrete grouting material can be poured between its outer wall and the rock hole; And the combined reinforcement bar includes multiple anchor bars 6 axially butted together. Between two adjacent anchor bars 6, there is sleeved and fixed with the same connecting sleeve 7. On the circumferential outer wall of the anchor bar 6 near both ends' edges, there are annular locking grooves 601. On the circumferential inner wall of the connecting sleeve 7, there is a locking mechanism adapted to the annular locking grooves 601; In the middle of the upper surface of the basic module 1, there is reserved a square main column 103 with an area smaller than the upper surface area of the basic module 1. And near the four corners of the upper surface of the square main column 103, there are bolt insertion holes 108. Anchor bolts 4 are inserted into the bolt insertion holes 108. By setting the upwardly protruding square main column 103 and the additional module 5 tenoned and mortised on the side of the basic module 1, the connection between each component is more convenient. On-site, only need to hoist in sequence, and then carry out local grouting to complete the construction; And the tensile load transmitted from the upper iron tower can be evenly transmitted to the additional module 5 through the tenon connection until it reaches the combined reinforcement bar of the additional module 5, making the overall structure bite more tightly with the rock mass.

[0022] Refer to 1 and Figure 8 , On both sides of the additional module 5 near the middle and upper part, there are reserved symmetric connecting ear plates 502. The two connecting ear plates 502 in contact with each other of two adjacent additional modules 5 are spliced into a tenon structure; And on the outer wall of the basic module 1 below the tenon structure of two adjacent additional modules 5, there is reserved a reinforced concrete tenon convex 9. The reinforced concrete tenon convex 9 is located between two adjacent side ears 8; And on the upper surface of the reinforced concrete tenon convex 9, there is a steel bar framework 10 vertically passing through the tenon structure on the corresponding side. At the top of the steel bar framework 10, there is a pin steel plate 11 sleeved and fixed on the upper surface of the tenon structure. By setting a tenon structure and a steel bar framework 10 that can bite with each other, and cooperating with the pin steel plate 11 sleeved on the steel bar framework 10, the two adjacent additional modules 5 can be well formed into a pin connection, and finally multiple additional modules 5 are surrounded around the basic module 1, greatly enhancing the integrity and making the load distribution more uniform and scientific.

[0023] Refer to 1 and Figure 8, docking pin holes 506 with the same axis and the same hole diameter are provided in the middle of the tenon structure and the pin steel plate 11. After assembly, the redundant steel bar skeletons 10 protruding above the pin steel plate 11 are bent, which plays a role in preventing detachment. During the later grouting process, the concrete can quickly flow smoothly through the docking pin holes 506 into the steel bar skeletons 10 below the tenon structure, and then the concrete on the upper and lower sides of the tenon structure forms a whole, improving the biting ability between two adjacent additional modules 5 and the overall tensile effect.

[0024] Refer to 1, Figure 7 and Figure 8 , lifting bendable steel bars II 505 protruding outward are reserved on the lower surfaces of the connecting ear plates 502 on both sides of the additional module 5. After splicing, the lifting bendable steel bars II 505 are respectively inserted into the steel bar skeletons 10 on their respective sides, which is not only convenient for binding during lifting, but also can improve the biting ability with the basic module 1; two J-shaped steel bars I 501 that are centrosymmetric to each other are arranged below the middle cross plate of the additional module 5, and there is a gap between the J-shaped steel bars I 501 and the anchor bars 6. U-shaped outward protruding steel bars 102 are fixed below each basic module 1 near the middle cross plate, and the U-shaped outward protruding steel bars 102 are located below the J-shaped steel bars I 501; the height of the additional module 5 is equal to the main body height of the basic module 1 "excluding the height of the square main column 103 at its top", the top ends of the anchor bars 6 are flush with the top end of the additional module 5, and a flat cut shoulder 602 is provided on the outer wall of the anchor bars 6 at the height of the U-shaped outward protruding steel bars 102. Two parallel connecting rods 503 are reserved above the middle cross plate of the additional module 5; by setting the U-shaped outward protruding steel bars 102, the J-shaped steel bars I 501, and the flat cut shoulder 602 provided on the outer wall of the anchor bars 6, before the final combined pouring, the J-shaped steel bars I 501, the anchor bars 6, the connecting rods 503, and the U-shaped outward protruding steel bars 102 can be tied together with iron wire, and then the concrete is poured, which can make the bonding performance between the anchor bars 6 and the concrete stronger.

[0025] Refer to Figure 7 and Figure 8 , two temporary anti-detachment grooves 109 are provided on the upper surface of the basic module 1 near the junction of each additional module 5, and a lapping strip 504 that matches the temporary anti-detachment grooves 109 is reserved near the top of the side surface of the additional module 5; during lifting, as long as the lapping strip 504 is clamped in the corresponding temporary anti-detachment grooves 109, it can ensure good splicing between the additional module 5 and the basic module 1, and then the clamping or binding of other components can be carried out in sequence.

[0026] Refer to Figure 4 and Figure 6, a cylindrical sink 104 is opened in the middle of the lower surface of the basic module 1, and a rectangular through hole 105 communicating with the circumferential side wall of the cylindrical sink 104 is opened above the side surface of the basic module 1 and above the steel-concrete tenon convex 9. This can make the basic module 1 hollow as much as possible during prefabrication, facilitate the later casting so that the position of the outer casting forms an integral body with the inside, and also facilitate the transportation operation before installation. The bottom diameter of the cylindrical sink 104 is larger than the length of the diagonal of the upper surface of the square main column 103, and an annular intermittent slide rail 107 is provided at the bottom hole of each bolt socket 108 at the bottom of the cylindrical sink 104. The bottom end of each anchor bolt 4 is sleeved and fixed with an umbrella-shaped tension cap 14, and the umbrella-shaped tension cap 14 is detachably clamped in the corresponding annular intermittent slide rail 107. The upper surface of the square main column 103 is provided with a tower base plate 3 sleeved on the four anchor bolts 4, and a central grouting hole 106 with the same diameter and vertical is opened in the middle of the tower base plate 3 and the bottom of the cylindrical sink 104; by setting the anchor bolt 4 with an umbrella-shaped tension cap 14 at the bottom end and cooperating with the setting of the annular intermittent slide rail 107, not only can the assembly of the anchor bolt 4 be carried out on site, but also the bonding performance between the bottom end of the anchor bolt 4 and the concrete can be stronger after casting.

[0027] Refer to Figures 3-4 , a plurality of stepped holes 101 distributed in central symmetry are also opened near the middle of the upper surface of the basic module 1, and an auxiliary insertion rod is inserted in each stepped hole 101. The structure of the auxiliary insertion rod is the same as that of the anchor bar 6, and a anti-disengagement sleeve 2 is fixed above the top end of the auxiliary insertion rod near the stepped hole 101. A plurality of radially distributed struts are fixed on the circumferential outer wall of the anti-disengagement sleeve 2. When the structural strength is required, a circle of auxiliary insertion rods can be added to improve the grip of the device.

[0028] Refer to Figures 4-5 , a reinforcing tension bar 13 extending to the auxiliary insertion rod is inserted in each rectangular through hole 105, and a U-shaped clamping strip 131 is fixed at one end of the reinforcing tension bar 13 close to the auxiliary insertion rod. The U-shaped clamping strip 131 is clamped on the corresponding plane cut shoulder 602 to support the auxiliary insertion rod, ensuring that the device will not shake or move axially during grouting. A positioning groove is opened in the middle of the plane cut shoulder 602, and positioning protrusions adapted to the positioning groove are reserved on the opposite sides of the two legs of the U-shaped clamping strip 131; the fixed anti-disengagement effect on the auxiliary insertion rod can be improved.

[0029] Refer to Figure 2 , Figures 10-11, grouting is carried out in the cylindrical sunken groove 104, multiple stepped holes 101, and the space below the tenon structure. Grouting is also carried out in the spaces above and below the middle cross plate of the additional module 5. After the grouting solidifies, it is the grouted part 12. This can not only make the whole more integrated, improve the tensile connection effect of each part, but also effectively protect the metal parts used for connection of each part, and improve the overall service life. The whole of the connecting sleeve 7 is in a tubular structure, and a slurry replenishing hole 703 is opened in the middle of the circumferential outer wall of the connecting sleeve 7. The structures at both ends of the connecting sleeve 7 are symmetrical to each other, and threaded grooves are opened on the circumferential inner walls at both ends of the connecting sleeve 7. Threaded strips protruding outward are reserved at both ends of the anchor bar 6, and there is no threaded strip between the end of the anchor bar 6 and the annular locking groove 601 at the corresponding end. Multiple rectangular holes 701 distributed in central symmetry are opened near the middle of the circumferential outer wall of the connecting sleeve 7, and anti-retreat hook rods 702 extending inside the pipe are reserved at one end of the inner wall of the rectangular hole 701 close to the center of the device. When the connecting sleeve 7 is screwed in as a whole, the anti-retreat hook rod 702 will be stuck in the corresponding annular locking groove 601 to form a lock. With the setting of the slurry replenishing hole 703, the joints of the two anchor bars 6 can be completely solidified and fixed together.

[0030] A construction method for a modular transmission line anchor foundation that can be quickly assembled includes the following steps: S1: Excavate a foundation pit with an area larger than the area of the top view after overall splicing. The depth of the foundation pit is greater than the height of the basic module 1, and the bottom of the foundation pit is leveled. Then, use an anchor drill to drill downward at the bottom of the foundation pit until reaching the rock layer to form a vertical rock hole, and the hole position corresponds to all the grouting holes 801; when necessary, rock holes corresponding to the positions of the stepped holes 101 also need to be drilled. S2: Then, pass the anchor bolts 4 upward from the bottom through the corresponding bolt jacks 108, and rotate and snap the umbrella-shaped tensioning cap 14 into the annular intermittent slide rail 107 at the corresponding position; then hoist and place the basic module 1 into the foundation pit, and align the grouting hole 801 in the middle of the side ear 8 with the rock hole at the bottom of the foundation pit; splice the anchor bars 6 according to the depth of the rock hole, and cut the excess part with a cutting machine for standby. S3: Then, hoist the additional module 5. After all the hoisting and splicing are completed, lock the adjacent two additional modules 5 with the pin steel plate 11; then insert the anchor bars 6 from above the grouting hole 507 of each additional module 5; tie the J-shaped steel bar 501, anchor bar 6, connecting rod 503, and U-shaped convex steel bar 102 at each additional module 5 together with iron wire. S4: Paste a hard board on the periphery of the device, and then surround some soil so that the hard board is closely attached to the surface of the device to prevent grouting from running out of the mold; finally, grout the cylindrical sunken groove 104, multiple stepped holes 101, and the space below the tenon structure; grout the spaces above and below the middle cross plate of the additional module 5 as well.

[0031] As described above, it is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes should be covered within the protection scope of the present invention.

Claims

1. A modular transmission line anchor foundation that can be quickly assembled, including a basic module (1) with an overall prismatic structure, characterized in that, On both opposite outer walls of the basic module (1) near the middle of the bottom end, first side ears (8) are reserved, and a vertical grouting hole two (801) is opened in the middle of the upper surface of the first side ear (8). On the outer walls of the basic module (1) where the first side ears (8) are located, additional modules (5) with an overall H-shaped structure are slidably clamped. A grouting hole one (507) that is coaxial and has the same diameter as the grouting hole two (801) on the corresponding side is opened in the middle cross plate of the additional module (5); the same combined reinforcing bar is inserted into the grouting hole one (507) and the grouting hole two (801); and the combined reinforcing bar includes multiple anchor bars (6) axially butted together, and the same connecting sleeve (7) is sleeved and fixed between two adjacent anchor bars (6). Annular locking grooves (601) are opened on the circumferential outer wall of the anchor bar (6) near the edges at both ends, and a locking mechanism adapted to the annular locking groove (601) is arranged on the circumferential inner wall of the connecting sleeve (7); in the middle of the upper surface of the basic module (1), a square main column (103) with an area smaller than the upper surface area of the basic module (1) is reserved, and bolt insertion holes (108) are opened near the four corners of the upper surface of the square main column (103), and anchor bolts (4) are inserted into the bolt insertion holes (108).

2. The modular transmission line anchor foundation capable of being quickly assembled according to claim 1, wherein, On both sides of the additional module (5) near the upper middle part, symmetric connecting ear plates (502) are reserved, and the two connecting ear plates (502) in contact with each other of two adjacent additional modules (5) are spliced into a tenon structure; on the outer wall of the basic module (1) below the tenon structure of two adjacent additional modules (5), a reinforced concrete tenon convex (9) is reserved, and the reinforced concrete tenon convex (9) is located between two adjacent first side ears (8); and a steel bar framework (10) vertically passing through the tenon structure on the corresponding side is fixed on the upper surface of the reinforced concrete tenon convex (9), and a pin steel plate (11) is sleeved and fixed at the top end of the steel bar framework (10) on the upper surface of the tenon structure.

3. The modular transmission line anchor foundation capable of rapid assembly according to claim 2, wherein A butting pin hole (506) with the same axis and the same aperture is opened in the middle of the tenon structure and the pin steel plate (11), and the redundant steel bar framework (10) protruding above the pin steel plate (11) is knocked and bent after assembly.

4. The modular transmission line anchor foundation capable of being quickly assembled according to claim 3, characterized in that, On the lower surfaces of the connecting ear plates (502) on both sides of the additional module (5), outwardly protruding hoisting bendable steel bars II (505) are reserved, and after the hoisting bendable steel bars II (505) are spliced, they are respectively inserted into the steel bar skeletons (10) on their respective sides; below the middle cross plate of the additional module (5), two J-shaped steel bars I (501) that are centrosymmetric to each other are provided, and there is a gap between the J-shaped steel bars I (501) and the anchor bars (6). Below each middle cross plate of the basic module (1), U-shaped outwardly protruding steel bars (102) are fixedly provided, and the U-shaped outwardly protruding steel bars (102) are located below the J-shaped steel bars I (501); the height of the additional module (5) is equal to the main body height of the basic module (1) "excluding the height of the square main column (103) at its top end", the top end of the anchor bar (6) is flush with the top end of the additional module (5), and a planar cut shoulder (602) is provided on the outer wall of the anchor bar (6) at the height of the U-shaped outwardly protruding steel bar (102). Above the middle cross plate of the additional module (5), two parallel connecting rods (503) are reserved.

5. A modular transmission line anchor foundation that can be quickly assembled according to claim 4, characterized in that, On the upper surface of the basic module (1), two temporary anti-disengagement grooves (109) are opened near the junction of each additional module (5), and near the top end of the side surface of the additional module (5), a lapping strip (504) that coincides with the temporary anti-disengagement groove (109) is reserved.

6. The modular transmission line anchor foundation capable of being quickly assembled according to claim 5, characterized in that, In the middle of the lower surface of the basic module (1), a cylindrical sunk groove (104) is opened, and on the side surface of the basic module (1) above the steel-concrete tenon convex (9), a rectangular through hole (105) that communicates with the circumferential side wall of the cylindrical sunk groove (104) is opened. The bottom diameter of the cylindrical sunk groove (104) is larger than the length of the diagonal of the upper surface of the square main column (103), and at the bottom of the cylindrical sunk groove (104) at the bottom orifice of each bolt insertion hole (108), an annular intermittent slide rail (107) is provided. At the bottom end of each anchor bolt (4), an umbrella-shaped tensioning cap (14) is sleeved and fixed, and the umbrella-shaped tensioning cap (14) is detachably clamped in the corresponding annular intermittent slide rail (107). On the upper surface of the square main column (103), a tower base plate (3) sleeved on the four anchor bolts (4) is provided, and a central grouting hole I (106) with the same diameter and vertical is opened in the middle of the tower base plate (3) and the bottom of the cylindrical sunk groove (104).

7. A modular transmission line anchor foundation that can be quickly assembled according to claim 6, characterized in that, Near the middle of the upper surface of the basic module (1), a plurality of stepped holes (101) that are centrosymmetrically distributed are also opened, and an auxiliary insertion rod is inserted into each stepped hole (101). The structure of the auxiliary insertion rod is the same as the structure of the anchor bar (6), and near the upper part of the stepped hole (101) at the top end of the auxiliary insertion rod, an anti-disengagement sleeve (2) is fixed. On the circumferential outer wall of the anti-disengagement sleeve (2), a plurality of radially distributed support rods are fixed.

8. A modular transmission line anchor foundation that can be quickly assembled according to claim 7, characterized in that, A reinforcing tension bar (13) extending to the auxiliary insertion bar is inserted into each of the rectangular through holes (105), and a U-shaped clamping strip (131) is fixed to one end of the reinforcing tension bar (13) close to the auxiliary insertion bar. The U-shaped clamping strip (131) is clamped on the corresponding planar cutting shoulder (602) to support the auxiliary insertion bar. A positioning groove is formed in the middle of each of the planar cutting shoulders (602), and a positioning protrusion adapted to the positioning groove is reserved on one side of each of the two legs of the U-shaped clamping strip (131) facing each other.

9. The modular transmission line anchor foundation capable of rapid assembly according to claim 8, characterized in that, The cylindrical sunk groove (104), the plurality of stepped holes (101), and the space below the tenon structure are all grouted, and the spaces above and below the middle cross plate of the additional module (5) are also grouted. After the grout solidifies, it forms the grouted part (12). The connecting sleeve (7) is of an overall tubular structure, and a grout replenishing hole (703) is formed in the middle of the circumferential outer wall of the connecting sleeve (7). The structures at both ends of the connecting sleeve (7) are symmetrical to each other, and threaded grooves are formed in the circumferential inner walls at both ends of the connecting sleeve (7). Threaded strips protruding outward are reserved at both ends of the anchor bar (6), and there is no threaded strip between the end of the anchor bar (6) and the annular locking groove (601) at the corresponding end. A plurality of rectangular holes (701) distributed in central symmetry are formed in the middle of the circumferential outer wall of the connecting sleeve (7), and a retaining hook rod (702) extending inside the pipe is reserved at one end of the inner wall of each rectangular hole (701) close to the center of the device. The retaining hook rod (702) will be clamped in the corresponding annular locking groove (601) when the connecting sleeve (7) is rotated and advanced as a whole to form a lock.

10. A construction method for a modular transmission line anchor foundation that can be quickly assembled, characterized in that, Including the following steps: S1: Excavate a foundation pit with an area larger than the area of the overall assembled top view. The depth of the foundation pit is greater than the height of the basic module (1), and level the bottom of the foundation pit. Then use an anchor rod drill to drill downward in the bottom of the foundation pit until reaching the rock formation to form a vertical rock hole, and the hole position corresponds to all the grouting holes II (801); when necessary, rock holes corresponding to the positions of the stepped holes (101) also need to be drilled. S2: Then pass the anchor bolts (4) upward from the bottom through the corresponding bolt insertion holes (108), and rotate and clamp the umbrella-shaped tightening caps (14) in the annular intermittent sliding rails (107) at their respective positions; then hoist and place the basic module (1) into the foundation pit, and align the grouting holes II (801) in the middle of the side ear I (8) with the rock holes at the bottom of the foundation pit; splice the anchor bars (6) according to the depth of the rock holes, and cut the excess part with a cutting machine for standby. S3: Then hoist the additional module (5). After all the hoisting and splicing are completed, lock the adjacent two additional modules (5) with the pin steel plates (11); then insert the anchor bars (6) from above the grouting holes I (507) of each additional module (5); tie the J-shaped steel bars I (501), anchor bars (6), connecting rods (503), and U-shaped protruding steel bars (102) at each additional module (5) together with iron wires. S4: The periphery of the device is pasted with hard boards, and then some soil is surrounded to make the hard boards closely attached to the surface of the device to prevent the grouting from running out of the formwork; finally, grouting is carried out in the cylindrical sink (104), the multiple stepped holes (101), and the space below the tenon structure; grouting is also carried out in the spaces above and below the middle cross plate of the additional module (5).

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