Anti-floating anchor rod positioning device under sand layer geological condition

Abstract

The anti-floating anchor rod positioning device under the sand layer geological condition comprises a group of anchor rods and positioning units which are arranged along the radial direction of the anchor rods, are perpendicular to the anchor rods and are used for limiting the positions of the anchor rods, and the positioning units are used for fixing the relative positions of the adjacent anchor rods. The positioning units are additionally arranged, the distance between the anti-floating anchor rods is fixed through the positioning units, extra support is provided so as to effectively prevent floating of the anti-floating anchor rods, and the quality problems that due to the fact that the anchor rods are bent and deformed, the distance between the anti-floating anchor rods is not uniform and the like, steel bars are staggered and deviated, gaps are too small, and holes are collapsed are solved.

Description

Technical Field

[0001] This utility model relates to the field of foundation technology, and in particular to an anti-buoyancy anchor positioning device under sandy geological conditions. Background Technology

[0002] Currently, the construction of anti-buoyancy anchor bolts on construction sites typically involves drilling, cleaning, and pressure grouting using anchor bolt drilling rigs for installation and consolidation. However, in sandy geological conditions, due to the relatively loose soil structure and the potential presence of groundwater flow, the anchor bolts are easily subject to external forces and may float. Furthermore, because sand layers are highly fluid and have weak interparticle cohesion, borehole collapse is prone to occur under external forces, leading to uneven spacing of the anti-buoyancy anchor bolts and problems such as rebar misalignment and displacement. This not only fails to connect and consolidate the anchor bolts with the soil but also fails to improve the overall strength and rigidity of the support structure, thus failing to effectively resist groundwater pressure and soil deformation. Moreover, after a borehole collapse, it is necessary to backfill and compact the hole before re-drilling, which not only consumes a significant amount of manpower and time but also hinders work efficiency and cost savings. Utility Model Content

[0003] In view of the above-mentioned problems in the existing technology, the purpose of this utility model is to provide a medical image rendering method based on ray tracing.

[0004] To solve the above problems, the present invention adopts the following technical solution:

[0005] This utility model provides an anti-buoyancy anchor positioning device under sandy geological conditions, including a set of anchors and a positioning unit perpendicular to the anchors along the radial direction for defining the position of the anchors. The positioning unit is used to fix the relative position between adjacent anchors.

[0006] In some embodiments, the positioning mechanism is installed vertically along the radial direction of any anchor rod, extending to and fixing to adjacent anchor rods; the number of anchor rods is the same as the number of positioning units; the positioning units are connected to all anchor rods in sequence, so that the anchor rods form a ring structure.

[0007] In some embodiments, the set of anchor bolts includes four anchor bolts, and the number of positioning units is the same as the number of anchor bolts, and they are respectively a first main keel, a second main keel, a third main keel, and a fourth main keel; one end of the first main keel is installed radially perpendicularly along the first anchor bolt, extends to the second anchor bolt and is fixed thereto; one end of the second main keel is installed radially perpendicularly along the second anchor bolt, extends to the third anchor bolt and is fixed thereto; one end of the third main keel is installed radially perpendicularly along the first anchor bolt, extends to the third anchor bolt and is fixed thereto; one end of the fourth main keel is installed radially perpendicularly along the fourth anchor bolt, extends to the first anchor bolt and is fixed thereto, so that the positioning device has a ring structure.

[0008] In some embodiments, the anchor bolt is fixedly installed at the intersection of two intersecting positioning units.

[0009] In some embodiments, the first main keel, the second main keel, the third main keel, and the fourth main keel each contain two or more steel bars.

[0010] In some embodiments, the two or more reinforcing bars are connected by a connecting rod.

[0011] In some embodiments, the spacing between the reinforcing bars is 1500~2000mm.

[0012] In some embodiments, the anchor rod is specifically a plain round ribbed steel bar, model C25.

[0013] In some embodiments, the main keel is a C8 model.

[0014] In some embodiments, the positioning device is disposed on the inner wall of the drill pipe and anchored therein.

[0015] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0016] 1. This utility model adds a positioning unit, which fixes the spacing between the anti-buoyancy anchor rods and provides additional support to effectively prevent the floating anchor rods from floating and avoid quality problems such as rebar misalignment, displacement, insufficient gap, and hole collapse caused by anchor rod bending deformation, uneven spacing of anti-buoyancy anchor rods, etc.

[0017] 2. The main keel provided by this utility model includes two or more steel bars, and the steel bars are connected by connectors, which can effectively enhance the stability and load-bearing capacity of the positioning device provided in this application;

[0018] 3. The positioning device provided by this utility model is installed on the inner wall of the drill rod and anchored. It can be anchored while grouting, which not only avoids floating in the hole due to external force, but also ensures that the anchor rod is accurately connected to the starting point or end point of underground excavation, thus achieving accurate positioning of the anchor rod; the device is simple and convenient to manufacture.

[0019] 4. This utility model can be manufactured by adjusting the size of the anti-buoyancy anchor bars according to the site conditions. It is simple to manufacture, easy to use, and has no safety hazards. Moreover, the positioning device provided in this application has the advantages of good quality and low cost, and can be widely used. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the installation of the positioning device and the inner wall structure of the drill pipe in this application;

[0021] Figure 2 This is a schematic diagram of the positioning device structure of this application;

[0022] Figure 3 This is a schematic diagram of the positioning unit structure in this application;

[0023] Figure 4 This is a schematic diagram of the anchor bolt structure in this application;

[0024] Figure 5 This is a top view of the positioning device of this application;

[0025] Among them, 1. Anchor bolt, 2. Positioning unit, 3. Drill rod, 21. First keel, 22. Second main keel, 23. Third main keel, 24. Fourth main keel, 25. Connector. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0028] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] Example

[0031] Please see Figures 1 to 5As shown, this embodiment provides an anti-buoyancy anchor positioning device under sandy geological conditions, which includes a set of anchors 1 and a positioning unit 2 arranged radially and perpendicular to the anchors 1 to define the position of the anchors 1. The positioning unit 2 is used to fix the relative position between adjacent anchors 1.

[0032] Specifically, the main function of the positioning unit 2 is to fix the relative position between the anchor rods 1 and provide additional support for the anchor rods 1, so as to avoid quality problems such as misalignment, displacement, insufficient gap, and hole collapse caused by problems such as anchor rod bending deformation and uneven spacing of anti-buoyancy anchor rods.

[0033] This invention effectively solves problems such as uneven spacing between anchor rods 1 and easy deformation of anchor rods 1; it can effectively improve the stability of anchor rods 1 in sandy geological conditions. The positioning device is set on the inner wall of the drill rod 3 and anchored, and the anchor is lowered while grouting. This not only avoids floating in the hole due to external forces, but also ensures that the anchor rods 1 are accurately connected to the starting point or end point of underground excavation, thus achieving accurate positioning of the anchor rods 1. The device is simple and convenient to manufacture.

[0034] Example 1

[0035] like Figures 1 to 5 As shown, this embodiment provides an anti-buoyancy anchor positioning device under sandy geological conditions, including a set of anchors 1 and a positioning unit 2 arranged radially and perpendicular to the anchors 1 to define the position of the anchors 1. The positioning unit 2 is used to fix the relative position between adjacent anchors 1.

[0036] The positioning unit 2 is installed vertically along the radial direction of any anchor rod 1, extending to and fixing adjacent anchor rods 1; the number of anchor rods 1 is the same as the number of positioning units 2; the positioning unit connects all anchor rods 1 in sequence, so that the anchor rods 1 and the positioning unit 2 form a ring structure.

[0037] In some preferred embodiments, the anchor rod 1 and the positioning unit 2 are fixedly connected by welding.

[0038] Example 2

[0039] like Figures 1 to 5 As shown, this embodiment provides an anti-buoyancy anchor positioning device under sandy geological conditions, including a set of anchors 1 and a positioning unit 2 arranged radially and perpendicular to the anchors 1 to define the position of the anchors 1. The positioning unit 2 is used to fix the relative position between adjacent anchors 1.

[0040] A set of anchor bolts 1 includes four anchor bolts 1. The number of positioning units 2 is the same as the number of anchor bolts 1, and they are respectively a first main keel 21, a second main keel 22, a third main keel 23, and a fourth main keel 24. One end 21 of the first main keel is installed radially and vertically along the first anchor bolt 11, extends to the second anchor bolt 12 and is fixed thereto. One end 22 of the second main keel is installed radially and vertically along the second anchor bolt 12, extends to the third anchor bolt 13 and is fixed thereto. One end 23 of the third main keel is installed radially and vertically along the first anchor bolt 12, extends to the third anchor bolt 13 and is fixed thereto. One end 24 of the fourth main keel is installed radially and vertically along the fourth anchor bolt 13, extends to the first anchor bolt 11 and is fixed thereto, so that the positioning device has a ring structure.

[0041] Specifically, the first main keel 21, the second main keel 22, the third main keel 23, and the fourth main keel 24 are connected in sequence to form a ring structure. The ring structure of the anchor rod 1 is fixedly connected, which can effectively fix the relative position between the anchor rods 1 and provide support for the anchor rods 1, effectively preventing the anchor rods 1 from deforming.

[0042] Example 3

[0043] like Figures 1 to 5 As shown, this embodiment provides an anti-buoyancy anchor positioning device under sandy geological conditions, including a set of anchors 1 and a positioning unit 2 arranged radially and perpendicular to the anchors 1 to define the position of the anchors 1. The positioning unit 2 is used to fix the relative position between adjacent anchors 1.

[0044] A set of anchor bolts 1 includes four anchor bolts 1. The number of positioning units 2 is the same as the number of anchor bolts 1, and they are respectively the first main keel 21, the second main keel 22, the third main keel 23, and the fourth main keel 24. The first main keel 21, the second main keel 22, the third main keel 23, and the fourth main keel 24 each contain two or more steel bars. The two or more steel bars are connected by connectors 25.

[0045] Specifically, the main keel includes two or more steel bars, and the steel bars are connected by connectors 25, which can effectively enhance the stability and load-bearing capacity of the positioning device provided in this application.

[0046] Example 4

[0047] This embodiment is a further optimization based on embodiment 3, specifically:

[0048] The main keel is of type C8, and the spacing between the two steel bars of the main keel is 1500~2000mm.

[0049] Example 5

[0050] This embodiment is a further optimization based on embodiment 3, specifically:

[0051] The anchor rod (1) is specifically a plain round ribbed steel bar, model C25.

[0052] A construction method for an anti-buoyancy anchor positioning device under sandy geological conditions includes the following steps:

[0053] Step 1: Determine the specifications, model, and length of the anti-buoyancy anchor rod 1.

[0054] Inspect the specifications and model of the anti-buoyancy anchor rod 1 reinforcement on site, and determine the length of the anti-buoyancy anchor rod 1 reinforcement as required.

[0055] Step 2: Fabricate the positioning device

[0056] Four C25 anti-buoyancy anchor rods 1 with plain round ribbed steel bars are arranged vertically at 100mm intervals, and then welded together with 12 positioning units 2 formed by welding. The positioning unit 2 is the main keel steel bar (C8). The main keel steel bars are spaced 1500mm apart along the vertical length of the anti-buoyancy anchor rod 1 steel bars, and together they form a positioning device.

[0057] Step 3: Anchoring the positioning device

[0058] The positioning device is anchored down to be completely fitted and anchored to the inner wall of drill rod 3.

[0059] Step 4: Grouting

[0060] Grouting and anchoring are carried out simultaneously to ensure that the anti-buoyancy anchor positioning device is fully bonded to the cement grout;

[0061] Step 5: Pull-out test

[0062] After the positioning device is fixed and reaches the design strength requirements, a pull-out test is carried out.

[0063] Finally, it should be pointed out that the above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A positioning device for anti-buoyancy anchor bolts under sandy geological conditions, characterized in that, It includes a set of anchor rods (1) and a positioning unit (2) arranged radially and perpendicular to the anchor rods (1) to define the position of the anchor rods (1), the positioning unit (2) being used to fix the relative position between adjacent anchor rods (1).

2. The anti-buoyancy anchor positioning device under sandy geological conditions according to claim 1, characterized in that, The positioning unit (2) is installed radially and vertically along any anchor rod (1), extending to and fixing adjacent anchor rods (1); the number of anchor rods (1) is the same as the number of positioning units (2); the positioning unit (2) connects all anchor rods (1) in sequence, so that the anchor rods (1) form a ring structure.

3. The anti-buoyancy anchor positioning device under sandy geological conditions according to claim 2, characterized in that, The set of anchor rods (1) includes four anchor rods (1). The number of positioning units (2) is the same as the number of anchor rods (1), and they are respectively the first main keel (21), the second main keel (22), the third main keel (23), and the fourth main keel (24). One end of the first main keel (21) is installed vertically along the radial direction of the first anchor rod (11), extends to the second anchor rod (12), and is fixed thereto. One end of the second main keel (22) is installed vertically along the radial direction of the second anchor rod (12), extends to the third anchor rod (13), and is fixed thereto. One end of the third main keel (23) is installed vertically along the radial direction of the first anchor rod (11), extends to the third anchor rod (13), and is fixed thereto. One end of the fourth main keel (24) is installed vertically along the radial direction of the fourth anchor rod (14), extends to the first anchor rod (11), and is fixed thereto, so that the positioning device has a ring structure.

4. The anti-buoyancy anchor positioning device under sandy geological conditions according to claim 3, characterized in that, The anchor rod (1) is fixedly installed at the intersection of the two intersecting positioning units (2).

5. The anti-buoyancy anchor positioning device under sandy geological conditions according to claim 3, characterized in that, The first main keel (21), the second main keel (22), the third main keel (23), and the fourth main keel (24) each contain two or more steel bars.

6. The anti-buoyancy anchor positioning device under sandy geological conditions according to claim 5, characterized in that, The two or more steel bars are connected by a connecting rod (25).

7. A buoyancy anchor positioning device under sandy geological conditions according to claim 5 or 6, characterized in that, The spacing between the reinforcing bars is 1500~2000mm.

8. The anti-buoyancy anchor positioning device under sandy geological conditions according to claim 1, characterized in that, The anchor rod (1) is specifically a plain round ribbed steel bar, model C25.

9. A buoyancy anchor positioning device under sandy geological conditions according to claim 5, characterized in that, The main keel is model C8.

10. A buoyancy anchor positioning device under sandy geological conditions according to claim 1, characterized in that, The positioning device is located on the inner wall of the drill rod (3) and is anchored and fixed.

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