Anti-floating anchor rod structure, positioning clamp and construction method

Abstract

The invention discloses an anti-floating anchor rod structure, a positioning clamp and a construction method.The anti-floating anchor rod structure comprises a vertically-arranged water stopping barrel, the water stopping barrel is cylindrical and used for being tightly inserted into an anchor hole, an anchor rod assembly is arranged in the water stopping barrel in a penetrating mode, and limiting pieces are arranged at the two ends of the water stopping barrel correspondingly; the two limiting pieces are used for limiting the anchor rod assembly together so that the anchor rod assembly can be located in the middle of the water stop cylinder. Each limiting piece comprises a plurality of horizontally-arranged limiting steel bars, every two adjacent limiting steel bars are welded and fixed, the two ends of the multiple limiting steel bars are welded and fixed to the inner wall of the water stop cylinder, and limiting holes tightly matched with the anchor rod assembly are formed in the middles of the multiple limiting steel bars. The anchor rod assembly can be centered in the anchor hole, so that accurate positioning of the top position of the anchor rod assembly is realized, and subsequent construction operation is facilitated.

Description

Technical Field

[0001] The invention relates to the field of anti-floating anchor rods, and in particular to an anti-floating anchor rod structure, a positioning fixture and a construction method. Background Art

[0002] Anti-floating anchor rods are a type of anti-floating measure for underground structures in construction projects. Anti-floating anchor rods refer to structural components that are set up to resist the upward displacement of buildings above them. They are related to the height and changes of the groundwater level and are in the opposite direction of the force applied to the compression piles.

[0003] The anti-floating anchor in the related art is usually formed by welding a plurality of steel bars into an anchor assembly, which is inserted into an anchor hole of a building and poured with concrete. After the concrete solidifies, the anti-floating anchor is connected to the building.

[0004] However, when the anchor rod assembly in the related art is performing construction operations, it is impossible to ensure that the anchor rod assembly is centered in the anchor hole, which makes the position of the top of the anchor rod assembly prone to deviation, thereby affecting subsequent construction operations, and needs to be improved. Summary of the invention

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide an anti-floating anchor rod structure, a positioning fixture and a construction method, which can ensure that the anchor rod assembly is centered in the anchor hole, thereby achieving accurate positioning of the top position of the anchor rod assembly for subsequent construction operations.

[0006] In a first aspect, the present invention provides an anti-floating anchor structure, comprising a vertically arranged water stop cylinder, the water stop cylinder being cylindrical and used to be tightly inserted into an anchor hole, an anchor assembly being inserted into the water stop cylinder, and limiting members being respectively provided at both ends of the water stop cylinder, and the two limiting members being used to limit the anchor assembly together so that the anchor assembly is centered in the water stop cylinder; Each of the limiting parts includes multiple horizontally arranged limiting steel bars, two adjacent limiting steel bars are welded and fixed, and the two ends of the multiple limiting steel bars are respectively welded and fixed to the inner wall of the water stop cylinder, and a limiting hole that tightly fits with the anchor rod assembly is formed in the middle position of the multiple limiting steel bars.

[0007] Optionally, the anchor assembly includes a plurality of vertically arranged support steel bars and a plurality of vertically arranged support tubes, wherein the support tubes are cylindrical, the plurality of support tubes are coaxial and arranged at equal intervals in the vertical direction, the plurality of support steel bars are evenly spaced around the support tubes, and each of the support steel bars is welded and fixed to the plurality of support tubes respectively; The two limiting holes are respectively regular polygons, the connecting line of the plurality of supporting steel bars is a regular polygon and fits tightly with the two limiting holes, and the supporting steel bars can rest against the connection position of two adjacent limiting steel bars of the two limiting members.

[0008] Optionally: a plurality of pairs of limiting grooves are respectively provided at both ends of the inner wall of the water stop cylinder, the groove width of the limiting grooves is the same as the outer diameter of the limiting steel bars, and each pair of the limiting grooves is respectively provided for the corresponding end of any one of the limiting steel bars to be tightly inserted to achieve the positioning of the limiting steel bars.

[0009] Optionally, the groove depth of the limiting groove is set so that the multiple limiting steel bars of each limiting member can be inserted into the same pair of limiting grooves after being stacked in the vertical direction.

[0010] Optionally: a water stop ring is sleeved on the upper end of the water stop cylinder, and the water stop ring is welded and fixed to the water stop cylinder.

[0011] In the second aspect, the present invention provides a positioning fixture for an anti-floating anchor structure, including a support frame, on which a first positioning mechanism and a second positioning mechanism are provided. The first positioning mechanism is used to position the anchor assembly, and the second positioning mechanism is used to position the water stop cylinder and the anchor assembly, and to center the anchor assembly in the water stop cylinder.

[0012] Optionally: the first positioning mechanism comprises two support seats respectively connected to the support frame in a horizontal sliding manner, the two support seats can slide towards or away from each other, and the support frame is provided with a driving mechanism for controlling the synchronous movement of the two support seats; The two support seats are detachably connected to support plates on one side close to each other, and the two support plates are horizontally rotatably connected to support shafts on one side close to each other. The two support shafts are coaxially fixedly connected to positioning columns on one end close to each other, and the positioning columns can be tightly inserted into the support tube. The outer diameter of the support shaft is smaller than the outer diameter of the positioning column, and the side walls of the two support shafts are respectively fixedly connected with a plurality of positioning blocks, and the plurality of positioning blocks are arranged at equal intervals along the axial direction of the corresponding support shaft, and each positioning block is respectively provided with a positioning notch on a side away from the support shaft, and when the end of the support steel bar is inserted into the positioning notch, the support steel bar abuts against the support tube; The support frame is vertically slidably connected with a lifting frame, the lifting frame is provided with a plurality of supporting grooves, and the supporting grooves are tightly inserted into the supporting tubes, and the support frame is provided with a control member for controlling the vertical movement of the lifting frame.

[0013] Optionally: the second positioning mechanism includes two positioning rings respectively fixed on the corresponding support plates, the two support shafts are respectively located on the inner sides of the corresponding positioning rings, and each positioning ring is respectively provided with a positioning ring groove for the water stop cylinder to be tightly clamped.

[0014] In a third aspect, the present invention provides a construction method of an anti-floating anchor structure, comprising the following steps: S1, clean the anchor hole, select the water stop cylinder according to the inner diameter of the anchor hole, and make the anchor rod assembly according to the depth of the anchor hole; S2, insert the water stop cylinder into the anchor hole and perform line positioning to determine the position of the water stop cylinder; S3, lower the anchor rod assembly and make it centered in the water stop cylinder, and weld and fix the anchor rod assembly to the stopper at the upper position; S4, pouring cement slurry into the water stop cylinder through the pouring equipment; S5, cleaning cement slurry; S6, after the cement slurry solidifies, the anchor rod assembly is bent.

[0015] Optionally: in S3, after the anchor rod assembly passes through the limiting hole formed in the middle of the plurality of limiting steel bars and is lowered into place, the plurality of supporting steel bars of the anchor rod assembly are respectively welded and fixed to two adjacent limiting steel bars of the limiting member located at the upper position; In S4, the pouring pipe is inserted from the uppermost support tube, and the pouring pipe is passed through multiple support tubes in sequence until the pouring pipe enters the lowermost support tube, and then cement slurry is poured into the anchor hole through the pouring pipe by pouring equipment. At the same time, the pouring pipe is slowly lifted up until the anchor rod is completely filled with cement slurry.

[0016] In summary, the present invention has the following beneficial effects: 1. The anchor rod assembly is limited by two limiting members, and the anchor rod assembly is centered in the water stop cylinder. Since the water stop cylinder can be tightly inserted into the anchor hole, the anchor rod assembly can be centered in the anchor hole, so as to achieve accurate positioning of the top position of the anchor rod assembly, reduce the risk of position deviation of the top of the anchor rod assembly, and facilitate subsequent construction operations; 2. The positioning fixture is used to position the support tube and the supporting steel bars to ensure the production accuracy of the anchor assembly. At the same time, the positioning fixture can also position the anchor assembly and the water stop tube, which is convenient for the staff to judge whether the position of the limiting steel bar is accurate, so that the staff can adjust the position of the limiting steel bar to ensure that the anchor assembly is centered in the water stop tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of Example 1; Figure 2 is a top view of Example 1; Figure 3 is a schematic diagram of the structure of Example 1, showing the status of four limiting steel bars; Figure 4 is a schematic diagram of the structure of Example 1, showing the status of six limiting steel bars; Figure 5 is a schematic diagram of the overall structure of Example 2; Figure 6 is a schematic structural diagram of the first positioning mechanism in Example 2; Figure 7 is a cross-sectional view of Example 2; Figure 8 It is a schematic diagram of the process of Example 3.

[0018] : 1. water stop cylinder; 2. anchor rod assembly; 21. support steel bar; 22. support cylinder; 3. limit piece; 31. limit steel bar; 32. limit hole; 4. limit groove; 5. water stop ring; 6. support frame; 7. first positioning mechanism; 71. support seat; 72. support plate; 73. support shaft; 74. positioning column; 75. positioning block; 76. positioning notch; 77. lifting frame; 78. support groove; 8. second positioning mechanism; 81. positioning ring; 82. positioning ring groove; 9. driving mechanism; 91. bidirectional screw; 92. servo motor; 10. control component; 101. hydraulic cylinder; 11. fastening screw; 12. locking ring; 13. locking groove; 14. locking block. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below in conjunction with the accompanying drawings. Example

[0020] like Figure 1-Figure 4 This is Example 1 of the present invention, which discloses an anti-floating anchor rod structure, including a vertically arranged water stop cylinder 1, which is cylindrical and used to be tightly inserted into the anchor hole, that is, the outer diameter of the water stop cylinder 1 is the same as the inner diameter of the anchor hole, so that the water stop cylinder 1 can be coaxially located in the anchor hole.

[0021] Reference Figure 1 , Figure 2 An anchor rod assembly 2 is passed through the water stop cylinder 1, and limiting members 3 are respectively provided at both ends of the water stop cylinder 1. The two limiting members 3 are used to limit the anchor rod assembly 2 together so that the anchor rod assembly 2 is centered in the water stop cylinder 1, thereby allowing the anchor rod assembly 2 to be centered in the anchor hole.

[0022] Reference Figure 1 , Figure 2The anchor assembly 2 includes a plurality of vertically arranged support steel bars 21 and a plurality of vertically arranged support tubes 22. The plurality of support tubes 22 are cylindrical in shape and are coaxial and arranged at equal intervals in the vertical direction. The plurality of support steel bars 21 are evenly spaced around the support tubes 22, and each support steel bar 21 is welded and fixed to the plurality of support tubes 22.

[0023] Reference Figure 2 , Figure 3 Each limiting member 3 includes a plurality of horizontally arranged limiting steel bars 31, two adjacent limiting steel bars 31 are welded and fixed, and the two ends of the plurality of limiting steel bars 31 are respectively welded and fixed to the inner wall of the water stop cylinder 1, and a limiting hole 32 that closely matches the anchor rod assembly 2 is formed in the middle position of the plurality of limiting steel bars 31.

[0024] Reference Figure 2 , Figure 3 The two limiting holes 32 are respectively regular polygons, the connecting line of multiple supporting steel bars 21 is a regular polygon and fits tightly with the two limiting holes 32, and the supporting steel bars 21 can be against the connecting position of two adjacent limiting steel bars 31 of the two limiting members 3.

[0025] In this embodiment, refer to Figure 3 There are four supporting steel bars 21, and each limiting member 3 is composed of four limiting steel bars 31, and the four limiting steel bars 31 are in a "well" shape, that is, the middle parts of the four limiting steel bars 31 of each limiting member 3 form square limiting holes 32, and the four supporting steel bars 21 are respectively against the inner corner positions of the limiting holes 32 to achieve stable limiting of the anchor rod assembly 2.

[0026] In other embodiments, reference Figure 4 , six support steel bars 21 can also be provided, then each limiting member 3 is respectively composed of six limiting steel bars 31, and a regular hexagonal limiting hole 32 is formed between the six limiting steel bars 31, and the six support steel bars 21 are respectively against the inner corner position of the limiting hole 32.

[0027] Reference Figure 1 , Figure 2 Each supporting steel bar 21 is welded and fixed to two adjacent limiting steel bars 31 of the limiting member 3 located at the upper position, that is, the supporting steel bar 21 abuts against the inner corner of the limiting hole 32 located at the upper position, and the supporting steel bar 21 is welded and fixed to the two abutting limiting steel bars 31 to improve the limiting effect and structural stability of the anchor assembly 2.

[0028] Reference Figure 2 , Figure 3A plurality of pairs of limiting grooves 4 are respectively arranged at both ends of the inner wall of the water stop cylinder 1. The groove width of the limiting groove 4 is the same as the outer diameter of the limiting steel bar 31, and each pair of limiting grooves 4 is respectively provided for the corresponding end of any limiting steel bar 31 to be tightly inserted, so as to realize the positioning of the limiting steel bar 31, and facilitate the staff to weld and fix the limiting steel bar 31 to the water stop cylinder 1.

[0029] Reference Figure 2 , Figure 3 The depth of the limiting groove 4 is set to: the multiple limiting steel bars 31 of each limiting member 3 can be stacked and placed in the vertical direction and can be inserted into the same pair of limiting grooves 4. Since the multiple limiting steel bars 31 need to be overlapped and welded, the depth of the limiting groove 4 needs to meet this requirement to ensure the stable limiting of the multiple limiting steel bars 31.

[0030] Reference Figure 1 , Figure 2 A water stop ring 5 is sleeved on the upper end of the water stop cylinder 1, and the water stop ring 5 is welded and fixed to the water stop cylinder 1. By providing the water stop ring 5, the waterproof effect between the anti-floating anchor structure and the building is improved.

[0031] In this embodiment, the outer diameter of the water stop tube 1 is 200 mm, the wall thickness is 3 mm, and the length is 800 mm. The outer diameter of the water stop ring 5 is 500 mm and the thickness is 5 mm. The outer diameter of the support tube 22 is 40 mm, the wall thickness is 3 mm, and the length is 200 mm. The spacing between two adjacent support tubes 22 is 2500 mm, and the length of the weld between the support tube 22 and the support steel bar 21 is 50 mm.

[0032] In this embodiment, the outer diameter of the supporting steel bar 21 is 20 mm, the outer diameter of the limiting steel bar 31 is 8 mm, and each supporting steel bar 21 is composed of multiple threaded steel bars. Two adjacent threaded steel bars are connected by straight threads, and the joint grade is Grade I to ensure the structural strength of the supporting steel bar 21. Example

[0033] like Figure 5-Figure 7 This is Example 2 of the present invention, which discloses a positioning fixture for an anti-floating anchor structure, including a support frame 6, on which a first positioning mechanism 7 and a second positioning mechanism 8 are provided. The first positioning mechanism 7 is used to position the supporting steel bars 21 and the supporting tube 22 of the anchor assembly 2, and the second positioning mechanism 8 is used to position the water stop tube 1 and the anchor assembly 2, and to center the anchor assembly 2 in the water stop tube 1.

[0034] Reference Figure 5 , Figure 6 , Figure 7The first positioning mechanism 7 includes two support seats 71 respectively connected to the support frame 6 in a horizontal sliding manner. The two support seats 71 can slide towards or away from each other, and the support frame 6 is provided with a driving mechanism 9 for controlling the synchronous movement of the two support seats 71.

[0035] Reference Figure 5 , Figure 6 , Figure 7 The two support seats 71 are detachably connected to support plates 72 on one side close to each other, and the two support plates 72 are horizontally rotatably connected to support shafts 73 on one side close to each other. The two support shafts 73 are coaxially fixedly connected to positioning columns 74 on one end close to each other, and the positioning columns 74 can be tightly inserted into the support tube 22.

[0036] Reference Figure 5 , Figure 6 , Figure 7 The outer diameter of the support shaft 73 is smaller than the outer diameter of the positioning column 74. The side walls of the two support shafts 73 are respectively fixedly connected with a plurality of positioning blocks 75, and the plurality of positioning blocks 75 are arranged at equal intervals along the axial direction of the corresponding support shaft 73. At the same time, each positioning block 75 is respectively provided with a positioning notch 76 on one side away from the support shaft 73. When the end of the support steel bar 21 is inserted into the positioning notch 76, the support steel bar 21 abuts against the support tube 22 to achieve the positioning of the support steel bar 21 and the support tube 22.

[0037] Reference Figure 5 , Figure 6 , Figure 7 A lifting frame 77 is vertically slidably connected to the support frame 6, and a plurality of supporting grooves 78 are provided on the lifting frame 77, and the supporting grooves 78 are tightly inserted into the supporting tubes 22. A control member 10 for controlling the vertical movement of the lifting frame 77 is provided on the support frame 6 to realize the positioning of the plurality of supporting tubes 22 located in the middle position.

[0038] When the anchor assembly 2 needs to be produced and processed, the two support cylinders 22 are tightly mounted on the corresponding positioning columns 74, and then the two support seats 71 are controlled by the driving mechanism 9 to move away from each other, and the spacing between the two support shafts 73 meets the length requirement of the support steel bar 21. Next, multiple support cylinders 22 are respectively inserted into the corresponding support grooves 78, and then the lifting frame 77 is controlled to rise by the control member 10, and the multiple support cylinders 22 are coaxial.

[0039] Then, the two support shafts 73 are rotated further, and the two positioning notches 76 are directed upward, and then the two ends of the support steel bar 21 are respectively inserted into the corresponding positioning notches 76. At this time, the support steel bar 21 is respectively in contact with the plurality of support tubes 22, and then the support steel bar 21 and the plurality of support tubes 22 can be welded and fixed. Then, the two support shafts 73 are rotated further, and the two positioning notches 76 are directed upward, and then a support steel bar 21 is inserted into the two positioning notches 76, and then the support steel bar 21 and the support tube 22 are welded and fixed.

[0040] Repeat the above actions until multiple support steel bars 21 are welded and fixed to multiple support tubes 22 respectively. It should be noted that when the support shaft 73 rotates, if the support steel bars 21 interfere with the lifting frame 77, the control component 10 can be used to control the lifting frame 77 to move downward and separate the support tubes 22 from the lifting frame 77 to ensure that the support steel bars 21 and other components can rotate smoothly.

[0041] Reference Figure 5 , Figure 6 , Figure 7 The driving mechanism 9 includes a bidirectional lead screw 91 horizontally rotatably connected to the support frame 6. The two ends of the bidirectional lead screw 91 pass through the corresponding support seats 71 respectively and are threadedly connected to the support seats 71. At the same time, a servo motor 92 is fixedly connected to the support frame 6. The output shaft of the servo motor 92 is coaxially fixedly connected to the bidirectional lead screw 91, thereby providing a stable driving force for the bidirectional lead screw 91.

[0042] Reference Figure 5 , Figure 6 , Figure 7 The control member 10 includes a pair of hydraulic cylinders 101, the tails of the pair of hydraulic cylinders 101 are fixedly connected to the support frame 6, and the piston ends of the pair of hydraulic cylinders 101 are fixedly connected to the lifting frame 77, so that the pair of hydraulic cylinders 101 can jointly drive the lifting frame 77 to move vertically.

[0043] Reference Figure 5 , Figure 6 , Figure 7 The support plate 72 is connected to the support seat 71 by a plurality of fastening screws 11 so that the support plate 72 can be disassembled. When the staff needs to make anchor rod assemblies 2 with different numbers of supporting steel bars 21, the support plate 72 can be replaced to improve the adaptability of the positioning fixture.

[0044] Reference Figure 5 , Figure 6 , Figure 7A locking ring 12 is fixedly connected to the two support plates 72, and the two support shafts 73 are coaxially located on the inner side of the corresponding locking ring 12. The inner side wall of the locking ring 12 is provided with a plurality of locking grooves 13, and the plurality of locking grooves 13 are arranged one-to-one with the plurality of positioning blocks 75. The side wall of the support shaft 73 is fixedly connected with a plurality of elastic locking blocks 14, and the plurality of locking blocks 14 are arranged one-to-one with the plurality of positioning blocks 75, and the locking blocks 14 can be inserted into the locking grooves 13.

[0045] When the staff controls the rotation of the support shaft 73, if one of the limit notches is facing upward, multiple locking blocks 14 can be respectively inserted into the corresponding locking grooves 13, thereby achieving the limitation of the support shaft 73. At the same time, it can also remind the staff to facilitate the welding operation of the staff and improve the operational convenience.

[0046] Reference Figure 5 , Figure 6 , Figure 7 The second positioning mechanism 8 includes two positioning rings 81 respectively fixed on the corresponding support plates 72, the two support shafts 73 are respectively located on the inner sides of the corresponding positioning rings 81, and each positioning ring 81 is respectively provided with a positioning ring groove 82 for the water stop cylinder 1 to be tightly inserted.

[0047] When the anchor rod assembly 2 is completed, the two support seats 71 are controlled to move away from each other, and the anchor rod assembly 2 is removed. Then, one end of the support tube 22 is inserted into one of the positioning ring grooves 82, and then the anchor rod assembly 2 is placed between the two support seats 71. The two support seats 71 are controlled to move closer to each other through the driving mechanism 9 so that the two positioning columns 74 are respectively inserted into the support tube 22.

[0048] Next, insert multiple limiting steel bars 31 into the limiting groove 4 at the other end of the support tube 22, and determine whether the limiting steel bars 31 are tightly matched with the anchor rod assembly 2 to ensure that the anchor rod assembly 2 is centered in the water stop tube 1, and then weld the limiting steel bars 31.

[0049] Subsequently, pull the support tube 22 to move horizontally, and make the other end of the support tube 22 inserted into the corresponding positioning ring groove 82, and then insert multiple limiting steel bars 31 into the limiting groove 4 at the other end of the support tube 22, and judge whether the limiting steel bars 31 and the anchor rod assembly 2 are tightly matched, and then weld the limiting steel bars 31.

[0050] The positioning fixture of this embodiment can realize the positioning of the support tube 22 and the support steel bar 21 of the anchor rod assembly 2, ensuring the production accuracy of the anchor rod assembly 2. At the same time, the positioning fixture can also position the anchor rod assembly 2 and the water stop tube 1, making it convenient for the staff to judge whether the position of the limiting steel bar 31 is accurate, so that the staff can adjust the position of the limiting steel bar 31, thereby ensuring that the anchor rod assembly 2 is centered in the water stop tube 1. Example

[0051] like Figure 8 This is Embodiment 3 of the present invention, which discloses a construction method of an anti-floating anchor structure. S1, clean the anchor hole, select a water stop cylinder 1 according to the inner diameter of the anchor hole, and make an anchor rod assembly 2 according to the depth of the anchor hole; S2, inserting the water stop cylinder 1 into the anchor hole and performing line positioning to determine the position of the water stop cylinder 1; S3, lower the anchor rod assembly 2 and make the anchor rod assembly 2 centered in the water stop cylinder 1, and weld and fix the anchor rod assembly 2 to the stopper 3 located at the upper position; S4, pouring cement slurry into the water stop cylinder 1 through a pouring device; S5, cleaning cement slurry; S6, after the cement slurry is solidified, the anchor rod assembly 2 is bent.

[0052] In S3, after the anchor rod assembly 2 passes through the limiting hole 32 formed in the middle position of the multiple limiting steel bars 31 and is lowered into place, the multiple supporting steel bars 21 of the anchor rod assembly 2 are respectively welded and fixed to the two adjacent limiting steel bars 31 of the limiting member 3 located at the upper position to improve the limiting effect and structural strength of the anchor rod assembly 2.

[0053] In S4, the casting pipe is inserted from the support tube 22 at the uppermost position, and the casting pipe is passed through multiple support tubes 22 in sequence until the casting pipe enters the support tube 22 at the lowermost position, and then cement slurry is poured into the anchor hole through the casting pipe through the casting equipment. At the same time, the casting pipe is slowly lifted until the anchor rod is completely filled with cement slurry.

[0054] The specific embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make modifications to the embodiments without any creative contribution as needed. However, such modifications are protected by the patent law as long as they are within the scope of the claims of the present invention.

Claims

1. An anti-floating anchor structure, characterized in that: The invention comprises a vertically arranged water stop cylinder (1), the water stop cylinder (1) is cylindrical and is used to be tightly inserted into an anchor hole, an anchor rod assembly (2) is inserted into the water stop cylinder (1), and limiting members (3) are respectively provided at both ends of the water stop cylinder (1), and the two limiting members (3) are used to limit the anchor rod assembly (2) together so that the anchor rod assembly (2) is centrally located in the water stop cylinder (1); Each of the limiting members (3) comprises a plurality of horizontally arranged limiting steel bars (31), two adjacent limiting steel bars (31) are welded and fixed, and both ends of the plurality of limiting steel bars (31) are respectively welded and fixed to the inner wall of the water stop cylinder (1), and a limiting hole (32) that closely matches the anchor rod assembly (2) is formed at the middle position of the plurality of limiting steel bars (31).

2. The anti-floating anchor structure according to claim 1, characterized in that: The anchor rod assembly (2) comprises a plurality of vertically arranged support steel bars (21) and a plurality of vertically arranged support tubes (22), wherein the support tubes (22) are cylindrical in shape, the plurality of support tubes (22) are coaxial and arranged at equal intervals in the vertical direction, the plurality of support steel bars (21) are arranged at equal intervals around the support tubes (22), and each of the support steel bars (21) is respectively welded and fixed to the plurality of support tubes (22); The two limiting holes (32) are respectively in the form of regular polygons, and the connecting line of the plurality of supporting steel bars (21) is in the form of a regular polygon and is tightly matched with the two limiting holes (32), and the supporting steel bars (21) can abut against the connection position of two adjacent limiting steel bars (31) of the two limiting members (3).

3. The anti-floating anchor structure according to claim 2, characterized in that: A plurality of pairs of limiting grooves (4) are respectively arranged at both ends of the inner wall of the water stop cylinder (1), the groove width of the limiting grooves (4) being the same as the outer diameter of the limiting steel bar (31), and each pair of the limiting grooves (4) is respectively provided for the corresponding end of any one of the limiting steel bars (31) to be tightly inserted, so as to realize the positioning of the limiting steel bar (31).

4. The anti-floating anchor structure according to claim 3 is characterized in that: The groove depth of the limiting groove (4) is set so that the plurality of limiting steel bars (31) of each limiting member (3) can be inserted into the same pair of limiting grooves (4) after being stacked and placed in a vertical direction.

5. The anti-floating anchor structure according to claim 1, characterized in that: A water stop ring (5) is sleeved on the upper end of the water stop cylinder (1), and the water stop ring (5) is fixed to the water stop cylinder (1) by welding.

6. A positioning fixture for an anti-floating anchor structure according to any one of claims 1 to 5, characterized in that: The invention comprises a support frame (6), wherein a first positioning mechanism (7) and a second positioning mechanism (8) are arranged on the support frame (6), wherein the first positioning mechanism (7) is used to position the anchor rod assembly (2), and the second positioning mechanism (8) is used to position the water stop cylinder (1) and the anchor rod assembly (2), and to position the anchor rod assembly (2) in the center of the water stop cylinder (1).

7. The positioning fixture according to claim 6, characterized in that: The first positioning mechanism (7) comprises two support seats (71) respectively connected to the support frame (6) in a horizontal sliding manner, the two support seats (71) can slide in a direction approaching or moving away from each other, and the support frame (6) is provided with a driving mechanism (9) for controlling the synchronous movement of the two support seats (71); The two support seats (71) are detachably connected to a support plate (72) on one side close to each other, and the two support plates (72) are horizontally rotatably connected to a support shaft (73) on one side close to each other. The two support shafts (73) are coaxially fixedly connected to one end of each other, and the positioning column (74) can be tightly inserted into the support tube (22); The outer diameter of the support shaft (73) is smaller than the outer diameter of the positioning column (74); the side walls of the two support shafts (73) are respectively fixedly connected with a plurality of positioning blocks (75); and the plurality of positioning blocks (75) are arranged at equal intervals along the axial direction of the corresponding support shaft (73); a positioning notch (76) is respectively provided on a side of each positioning block (75) away from the support shaft (73); when the end of the support steel bar (21) is inserted into the positioning notch (76), the support steel bar (21) abuts against the support tube (22); The support frame (6) is vertically slidably connected to a lifting frame (77), the lifting frame (77) is provided with a plurality of supporting grooves (78), and the supporting grooves (78) are tightly inserted into the supporting tube (22), and the support frame (6) is provided with a control member (10) for controlling the vertical movement of the lifting frame (77).

8. The positioning fixture according to claim 7, characterized in that: The second positioning mechanism (8) comprises two positioning rings (81) respectively fixed on the corresponding support plates (72); the two support shafts (73) are respectively located on the inner sides of the corresponding positioning rings (81); and each positioning ring (81) is respectively provided with a positioning ring groove (82) for the water stop cylinder (1) to be tightly clamped.

9. A construction method of an anti-floating anchor structure according to any one of claims 1 to 5, characterized in that: The steps include: S1, cleaning the anchor hole, selecting a water stop cylinder (1) according to the inner diameter of the anchor hole, and making an anchor rod assembly (2) according to the depth of the anchor hole; S2, inserting the water stop cylinder (1) into the anchor hole and performing line positioning to determine the position of the water stop cylinder (1); S3, lowering the anchor rod assembly (2) and positioning the anchor rod assembly (2) in the center of the water stop cylinder (1), while welding and fixing the anchor rod assembly (2) to the stopper (3) located at the upper position; S4, pouring cement slurry into the water stop cylinder (1) by using a pouring device; S5, cleaning cement slurry; S6, after the cement slurry is solidified, the anchor rod assembly (2) is bent.

10. The construction method according to claim 9, characterized in that: In S3, after the anchor rod assembly (2) passes through the limiting hole (32) formed in the middle of the plurality of limiting steel bars (31) and is lowered into position, the plurality of supporting steel bars (21) of the anchor rod assembly (2) are respectively welded and fixed to two adjacent limiting steel bars (31) of the limiting member (3) located at the upper position; In S4, the pouring pipe is inserted from the uppermost support tube (22), and the pouring pipe is passed through multiple support tubes (22) in sequence until the pouring pipe enters the lowermost support tube (22), and then cement slurry is poured into the anchor hole through the pouring pipe by pouring equipment. At the same time, the pouring pipe is slowly lifted up until the anchor rod is completely filled with cement slurry.

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