Anti-floating anchor rod

Abstract

The utility model provides an anti-floating anchor rod, which belongs to the technical field of support engineering, and comprises a grouting pipe, a grouting pipe positioning ring, a plurality of rod bodies and a centering frame, and the grouting pipe positioning ring is sleeved on the grouting pipe; the multiple rod bodies are arranged around the positioning ring and fixedly connected with the positioning ring. The centering frame is arranged outside the multiple rod bodies and used for limiting the multiple rod bodies in the center of the anchor rod hole. According to the utility model, the plurality of rod bodies are fixed through the grouting pipe positioning ring, and the grouting pipe is arranged in a penetrating manner, so that the grouting pipe is limited in the middle of the plurality of rod bodies, and the grouting pipe can be limited in the center of a hole through the limiting of the centering frame; when the anti-floating anchor rod is put down, the grouting pipe can be put down into a hole along with the anti-floating anchor rod, after the grouting pipe is put down in place, grouting can be directly conducted into the hole through the grouting pipe, due to the fact that the grouting pipe is located in the center of the hole, the grouting pipe is not exposed and does not need to be pulled out after grouting, the structural strength is not affected, construction is simpler, and construction operation is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of support engineering, and more specifically relates to an anti-floating anchor rod. Background Art

[0002] Anti-floating anchor rods are a kind of anti-floating measures for underground structures of construction projects. Anti-floating anchor rods are different from general foundation piles and have their own unique properties. The biggest difference between them and general foundation piles is that foundation piles are usually compression piles, and the pile body bears the pressure of building loads. The force is transmitted from the top of the pile to the bottom of the pile, and the force on the pile body changes with the change of building loads; while anti-floating piles are pull-out piles that bear tensile force. The force of ordinary anti-floating piles is also transmitted from the top of the pile to the bottom of the pile. The force on the pile body changes with the change of groundwater level, but the force mechanisms of the two are exactly opposite.

[0003] The current construction process of anti-floating anchor rods is to lower the anti-floating anchor rod steel bars after drilling the hole, and then insert the pipe for grouting after the anti-floating anchor rod steel bars are lowered, which makes the construction operation more complicated. Utility Model Content

[0004] The utility model aims to provide an anti-floating anchor rod to solve the technical problem of troublesome construction and operation of the anti-floating anchor rod in the prior art.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide an anti-floating anchor rod, including a grouting pipe, a grouting pipe positioning ring, a plurality of rod bodies and a centering frame, the grouting pipe positioning ring is sleeved on the grouting pipe; the plurality of rod bodies are arranged around the grouting pipe positioning ring, and are all fixedly connected to the grouting pipe positioning ring; the centering frame is arranged on the outside of the plurality of rod bodies to confine the plurality of rod bodies in the center of the anchor rod hole.

[0006] In combination with the above technical solution, in a possible implementation, there are multiple grouting pipe positioning rings, which are spaced apart along the length direction of the grouting pipe.

[0007] In combination with the above technical solution, in a possible implementation manner, there are multiple centering frames, and they are arranged corresponding to the multiple rod bodies.

[0008] In combination with the above technical solution, in a possible implementation manner, a plurality of centering frames are arranged at intervals along the length direction on each rod body.

[0009] In combination with the above technical solution, in a possible implementation manner, the centering frame is a triangular structure, a trapezoidal structure or an arched structure arranged along the rod body.

[0010] In combination with the above technical solution, in a possible implementation manner, the centering frame includes a curved rod, and the curved rod forms a triangular structure, a trapezoidal structure or an arched structure.

[0011] In combination with the above technical solution, in a possible implementation, the centering frame and the grouting pipe positioning ring are both connected to the rod body by welding.

[0012] In combination with the above technical solution, in a possible implementation, the centering frame further includes an outer support ring, and the outer support ring is connected to the curved rod on each rod body.

[0013] In combination with the above technical solution, in a possible implementation, the centering frame further includes an elastic claw, one end of which is connected to the middle of the curved rod, and in a natural state, the other end of the elastic claw is opened outward and tilted upward.

[0014] In combination with the above technical solution, in a possible implementation, a hook is provided at the outer end of the elastic claw, and the elastic claws on the multiple rod bodies are bent inwardly by being bound by the water-soluble wire stuck on the hook.

[0015] The beneficial effect of the anti-floating anchor rod provided by the utility model is that: compared with the prior art, the utility model fixes multiple rod bodies through a grouting pipe positioning ring, and passes a grouting pipe through it, so that the grouting pipe is limited in the middle of the multiple rod bodies, and then the grouting pipe can be kept limited in the center of the hole by limiting the centering frame; when lowering the anti-floating anchor rod, the grouting pipe can be lowered into the hole together with the anti-floating anchor rod, and after being lowered into place, grouting can be directly injected into the hole through the grouting pipe. Since the grouting pipe is located in the center of the hole, the grouting pipe is not exposed after grouting and does not need to be pulled out, which does not affect the structural strength and makes the construction simpler and convenient for construction operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 A schematic diagram of the structure of an anti-floating anchor rod provided by an embodiment of the utility model;

[0018] Figure 2 for Figure 1 A schematic cross-sectional structural diagram of an anti-floating anchor rod provided in an embodiment at position AA;

[0019] Figure 3 A schematic structural diagram of an anti-floating anchor rod provided in another embodiment of the utility model.

[0020] Among them, the reference numerals in the figures are as follows:

[0021] 10. Grouting pipe; 20. Grouting pipe positioning ring; 30. Rod body;

[0022] 40. Centering frame; 41. Bending rod; 42. External support ring; 43. Elastic claw; 44. Hook; 45. Water-soluble wire. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the utility model clearer, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the described embodiments are only part of the embodiments of the present application, not all of the embodiments, and the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0024] It should be further explained that the drawings and implementation modes of the present invention mainly describe the concept of the present invention. On the basis of this concept, some specific forms and settings of connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, on the premise that those skilled in the art understand the concept of the present invention, those skilled in the art can implement the above-mentioned specific forms and settings in a well-known manner.

[0025] When an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element.

[0026] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, "multiple" means two or more, and "several" means one or more, unless otherwise clearly and specifically defined.

[0027] The anti-floating anchor rod provided by the utility model is now described.

[0028] like Figure 1 and Figure 2As shown, the first embodiment of the utility model provides an anti-floating anchor rod, including a grouting pipe 10, a grouting pipe positioning ring 20, a plurality of rod bodies 30 and a centering frame 40, wherein the grouting pipe positioning ring 20 is sleeved on the grouting pipe 10; the plurality of rod bodies 30 are arranged around the grouting pipe positioning ring 20, and are all fixedly connected to the grouting pipe positioning ring 20; the centering frame 40 is arranged on the outside of the plurality of rod bodies 30, so as to confine the plurality of rod bodies 30 in the center of the anchor rod hole.

[0029] Compared with the prior art, the anti-floating anchor provided in the present embodiment fixes multiple rod bodies 30 through a grouting pipe positioning ring 20, and passes a grouting pipe 10 through it, so that the grouting pipe 10 is limited in the middle of the multiple rod bodies 30, and then the grouting pipe 10 can be kept limited in the center of the hole by the limiting of the centering frame 40; when the anti-floating anchor is lowered, the grouting pipe 10 can be lowered into the hole together with the anti-floating anchor, and after being lowered into place, grouting can be directly injected into the hole through the grouting pipe 10, because the grouting pipe 10 is located in the center of the hole, after grouting, the grouting pipe 10 is not exposed and does not need to be pulled out, which does not affect the structural strength and makes the construction simpler and convenient for construction operations.

[0030] like Figures 1 to 3 As shown, the utility model provides a specific implementation method based on the first implementation method as follows:

[0031] There are multiple grouting pipe positioning rings 20, which are spaced apart along the length direction of the grouting pipe 10 to better position the grouting pipe 10 and connect and fix the rod body 30. There are also multiple centering frames 40, which are arranged corresponding to the multiple rod bodies 30, and multiple centering frames 40 are arranged on each rod body 30 along the length direction to meet the use requirements. The centering frame 40 and the grouting pipe positioning ring 20 can be connected to the rod body 30 by welding or the like to ensure the connection strength.

[0032] In some specific embodiments, the centering frame 40 is a triangular structure, a trapezoidal structure or an arched structure arranged along the rod body 30, so that the downward side of the centering frame 40 can be an inclined structure to reduce scratching on the hole wall, which is beneficial to reduce the jamming of the anti-floating anchor rod and facilitate smooth lowering. At the same time, it is also beneficial to reduce the falling of debris from the hole wall, thereby helping to improve the construction efficiency and quality of the anchor rod.

[0033] Specifically, the centering frame 40 includes a curved rod 41, which forms the above-mentioned triangular structure, trapezoidal structure or arched structure. This form has less scratches on the hole wall, which is conducive to improving the construction efficiency and quality of the anchor rod.

[0034] Furthermore, if Figure 3 As shown, the centering frame 40 also includes an outer support ring 42, which is connected to the bent rod 41 on each rod body 30, so as to enhance the integrity of the entire anchor rod and prevent the bent rod 41 from twisting.

[0035] The centering frame 40 may further include an elastic claw 43 , one end of which is connected to the middle of the curved rod 41 , and in a natural state, the other end of the elastic claw 43 is opened outwards and tilted upwards.

[0036] By providing the elastic claws 43, the coverage of the centering frame 40 can be expanded to adapt to the use of holes of different sizes. When inserting the anchor rod, the entire anti-floating anchor rod can be directly inserted into the hole with the elastic claws 43 open. Since the elastic claws 43 are elastic, they can be deformed according to the situation of the hole wall, so that the rod body 30 and the grouting pipe 10 of the anti-floating anchor rod are always kept in the center of the hole.

[0037] Specifically, the elastic claw 43 can be a spring sheet, spring column or other structural form made of elastic material, or can be a structure composed of a rigid claw hinged to the middle of the curved rod 41 and an elastic member arranged between the curved rod 41 and the rigid claw.

[0038] For easier installation, a hook 44 is provided at the outer end of the elastic claw 43, and the elastic claws 43 on the plurality of rods are bent inwardly by being bound by a water-soluble line 45 clamped on the hook 44. The hook 44 can be a hook-shaped or ring-shaped structure.

[0039] In this way, when the anchor rod is inserted, there will be less contact with the hole wall of the elastic claw 43, reducing the possibility of hole collapse. Moreover, during grouting, the water-soluble line 45 can be dissolved to release the elastic claw 43, so that the rod body 30 and the grouting pipe 10 of the anti-floating anchor rod are always kept in the center of the hole.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-floating anchor, characterized in that: include: Grouting pipe (10); A grouting pipe positioning ring (20), sleeved on the grouting pipe (10); A plurality of rod bodies (30) are arranged around the grouting pipe positioning ring (20) and are all fixedly connected to the grouting pipe positioning ring (20); The centering frame (40) is arranged outside the plurality of rod bodies (30) and is used to limit the plurality of rod bodies (30) at the center of the anchor hole.

2. The anti-floating anchor rod according to claim 1, characterized in that: There are a plurality of grouting pipe positioning rings (20), which are distributed at intervals along the length direction of the grouting pipe (10).

3. The anti-floating anchor rod according to claim 1, characterized in that: There are a plurality of centering frames (40), which are arranged corresponding to the plurality of rod bodies (30).

4. The anti-floating anchor rod according to claim 3, characterized in that: A plurality of centering frames (40) are arranged at intervals along the length direction on each rod body (30).

5. The anti-floating anchor rod according to claim 3, characterized in that: The centering frame (40) is a triangular structure, a trapezoidal structure or an arched structure arranged along the rod body (30).

6. The anti-floating anchor rod according to claim 5, characterized in that: The centering frame (40) comprises a bent rod (41), and the bent rod (41) forms the triangular structure, the trapezoidal structure or the arched structure.

7. The anti-floating anchor rod according to claim 6, characterized in that: The centering frame (40) and the grouting pipe positioning ring (20) are both connected to the rod body (30) by welding.

8. The anti-floating anchor rod according to claim 6, characterized in that: The centering frame (40) further comprises an outer support ring (42), wherein the outer support ring (42) is connected to the curved rod (41) on each rod body (30).

9. The anti-floating anchor rod according to claim 8, characterized in that: The centering frame (40) further comprises an elastic claw (43), one end of which is connected to the middle of the curved rod (41), and in a natural state, the other end of the elastic claw (43) is opened outwards and tilted upwards.

10. The anti-floating anchor rod according to claim 9, characterized in that: The outer end of the elastic claw (43) is provided with a hook (44), and the elastic claws (43) on the plurality of rod bodies are bound by a water-soluble line (45) hooked on the hook (44) so ​​as to bend inward.

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