Correcting device for anchoring angle of pre-stressed anchor cable

Abstract

The utility model discloses a device for correcting the anchoring angle of a pre-stressed anchor cable, which comprises a steel pipe, the steel pipe is positioned in an anchor cable drill hole, the starting end of the steel pipe is provided with a plurality of short pipes, the short pipes are communicated with the steel pipe, the outer surface of the steel pipe is also provided with a steel plate, the steel plate is positioned on the inner sides of the short pipes, and the short pipes are symmetrically distributed along the center line of the steel plate. The wedge-shaped anchor cable has the advantages that the tail end of the steel pipe is arranged to be wedge-shaped, so that the steel pipe can be embedded in an anchor cable drill hole conveniently, the steel pipe is sleeved on the outer side of the anchor cable, the axis of the anchor cable coincides with the axis of the steel pipe, the anchor cable cannot generate angle deflection after penetrating out of the steel pipe, and therefore it is guaranteed that axial tensioning force cannot be reduced when being applied.

Description

Technical Field

[0001] The utility model relates to the technical field of slope protection engineering, in particular to a correction device for the anchoring angle of a prestressed anchor cable. Background Art

[0002] Prestressed anchor cable is a measure to increase the stability of retaining structures or rock and soil by anchoring. The principle is to pass the steel strand through the sliding surface that may slide or has already slid, fix one end of the steel strand in the stable rock and soil, then tension the steel strand to apply prestress, and then fix the other end of the steel strand to the surface of the rock and soil or retaining structure. The prestress applied on the steel strand is used to reduce the deformation of the retaining structure or limit the sliding of the rock and soil, thereby improving the stability of the rock and soil or retaining structure.

[0003] Prestressed anchor cables are often used in conjunction with anchor piles and frame beams. When constructing frame beams or anchor piles, a 100mm diameter PVC pipe is typically embedded within the structure, allowing the anchor cable to expand and contract freely within the beam or pile. The anchor cable drilling diameter is typically 115mm or 130mm. The PVC pipe diameter is smaller than the drill hole diameter, causing the pipe to tilt within the drill hole during embedment. The axis of the PVC pipe and the drill hole do not coincide. At this point, tension is applied according to the designed tension, which reduces the axial tension transmitted to the anchor cable. This makes it difficult for the prestress applied to the anchor cable to meet the design requirements, weakening the anchor cable's engineering effectiveness.

[0004] After pouring the anchor pier, additional grouting is required in the PVC pipe. Due to the inclination of the anchor hole, the cement mortar will flow out of the hole under the action of gravity during the additional grouting, resulting in incomplete grouting in the hole. The free section of the anchor cable is prone to rust in the air, which weakens the engineering durability of the anchor cable. When pouring the anchor pier for anchor tensioning, it is often the case that the angle between the pier and the anchor cable is not completely perpendicular, which will also cause the tension force transmitted to the axial direction of the anchor cable to be reduced, weakening the engineering effect of the anchor cable. In order to solve the problem of the angle of the anchor pier, there are now prefabricated pier templates with adjustable angles, but the template angle is manually adjusted. Affected by the quality of on-site construction, it is difficult for the pier angle to be strictly perpendicular to the anchor hole, affecting the reinforcement effect. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a device for correcting the anchoring angle of a prestressed anchor cable.

[0006] The purpose of the utility model is achieved through the following technical solutions: a correction device for the anchoring angle of a prestressed anchor cable, comprising a steel pipe, the steel pipe is located in the anchor cable drill hole, a plurality of short tubes are provided at the starting end of the steel pipe, and the short tubes are connected to the steel pipe, a steel plate is also provided on the outer surface of the steel pipe, and the steel plate is located on the inner side of the short tube, and the short tubes are symmetrically distributed along the center line of the steel plate.

[0007] Preferably, the end of the steel pipe is wedge-shaped.

[0008] Preferably, the steel plate is perpendicular to the axis of the steel pipe.

[0009] Preferably, the diameter of the steel pipe is smaller than the diameter of the anchor cable drill hole.

[0010] Preferably, there are two short tubes, and the height of the upper end openings of the short tubes is higher than the upper end surface of the steel plate.

[0011] The utility model has the following advantages:

[0012] 1. The utility model sets the end of the steel pipe into a wedge shape, thereby facilitating the steel pipe to be buried in the anchor cable drill hole, and sleeves the steel pipe on the outside of the anchor cable so that the axis of the anchor cable and the steel pipe coincide with each other. In this way, the anchor cable will not produce angular deflection after passing through the steel pipe, thereby ensuring that the axial tension force will not be reduced when applied.

[0013] 2. The utility model welds a steel plate on the outside of the steel pipe to serve as the reinforcement of the pier, thereby increasing the local compressive bearing capacity of the pier, and at the same time makes the steel plate perpendicular to the axis of the steel pipe, so that the surface of the pier is perpendicular to the axis of the steel pipe, and then the surface of the pier is perpendicular to the anchor cable, further avoiding the reduction when the axial tension force is applied, avoiding insufficient tension force during the tensioning process of the anchor cable, improving the construction quality of the anchor cable, and improving the construction efficiency.

[0014] 3. The utility model provides a short tube at the starting end of the steel pipe, and the short tube is connected to the steel pipe. After the anchor cable is tensioned and locked, any short tube is used as a grouting hole for grouting. When the slurry overflows from the pipe mouth of the other short tube, it means that the grouting is full, thereby isolating the anchor cable from the erosion of the ambient soil and ambient water, thereby improving the durability of the anchor cable.

[0015] 4. The utility model makes it easier to connect the short pipe with the grouting pipe by making the upper end of the short pipe higher than the upper end surface of the steel plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a structural diagram of the correction device;

[0017] Figure 2 It is a structural diagram of AA section;

[0018] Figure 3 A structural diagram showing the positional relationship between the correction device, frame beam, and anchor cable drilling holes;

[0019] In the figure, 1-steel pipe, 2-steel plate, 3-short pipe, 4-frame beam, 5-frame beam longitudinal reinforcement, 6-anchor cable drilling hole, 7-pad, 8-pad, 9-anchor. DETAILED DESCRIPTION

[0020] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0021] 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 rather merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0022] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0024] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the present invention is typically placed when in use, or are the orientations or positional relationships commonly understood by those skilled in the art. These terms are intended solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0026] In this embodiment, the direction where the end of the steel pipe 1 is located is defined as the inner side, such asFigure 1 and Figure 2 As shown, a device for correcting the anchoring angle of a prestressed anchor cable comprises a steel pipe 1, the steel pipe 1 being located in an anchor cable borehole 6, a plurality of short tubes 3 being provided at the starting end of the steel pipe 1, and the short tubes 3 being connected to the steel pipe 1, and further, the end of the steel pipe 1 being wedge-shaped. Specifically, the end of the steel pipe 1 is set to be wedge-shaped, so as to facilitate the steel pipe 1 to be buried in the anchor cable borehole 6, and the steel pipe 1 is put on the outside of the anchor cable so that the axis of the anchor cable coincides with the axis of the steel pipe 1, so that the anchor cable will not produce an angular deflection after passing through the steel pipe 1, thereby ensuring that the axial tension will not be reduced when applied. A steel plate 2 is also provided on the outer surface of the steel pipe 1, and the steel plate 2 is located on the inner side of the short tubes 3, and the short tubes 3 are symmetrically distributed along the center line of the steel plate 2. Preferably, the steel plate 2 is perpendicular to the axis of the steel pipe 1. Specifically, by welding the steel plate 2 on the outside of the steel pipe 1, it serves as the reinforcement of the cushion 7, thereby increasing the local compressive bearing capacity of the cushion 7, and at the same time making the steel plate 2 perpendicular to the axis of the steel pipe 1, so that the surface of the cushion 7 is perpendicular to the axis of the steel pipe 1, and then making the surface of the cushion 7 perpendicular to the anchor cable, further avoiding the reduction when the axial tension force is applied, avoiding insufficient tension force during the tensioning process of the anchor cable, improving the construction quality of the anchor cable, and improving the construction efficiency.

[0027] In this embodiment, the diameter of the steel pipe 1 is smaller than the diameter of the anchor cable drill hole 6. Specifically, the diameter of the steel pipe 1 is slightly smaller than the diameter of the anchor cable drill hole 6, so that when the steel pipe 1 is buried in the anchor cable drill hole 6, the gap between the steel pipe 1 and the inner wall of the anchor cable drill hole 6 is very small, thereby ensuring that the steel pipe 1 does not shake.

[0028] Furthermore, there are two short tubes 3, and the upper end of the short tubes 3 is higher than the upper end surface of the steel plate 2. Specifically, by providing a short tube 3 at the starting end of the steel pipe 1, and the short tube 3 is connected to the steel pipe 1, when the anchor cable is tensioned and locked, any short tube 3 is used as a grouting hole for grouting. When the slurry overflows from the end of the other short tube 3, it means that the grouting is full, thereby isolating the anchor cable from erosion by the surrounding soil and water, and improving the durability of the anchor cable; at the same time, the upper end of the short tube 3 is higher than the upper end surface of the steel plate 2, thereby facilitating the connection of the short tube 3 with the grouting pipe.

[0029] The construction process of this utility model is as follows: Figure 3As shown, first, during the process of tying the longitudinal reinforcement 5 and other stirrups on the frame beam 4, the end of the steel pipe 1 is inserted into the anchor cable drilling hole 6, so that the anchor cable is located in the anchor cable drilling hole 6, and then the frame beam 4 and the cushion pier 7 are supported and cast together, the middle of the steel plate 2 and the short tube 3 are located in the cushion pier 7, but the upper end of the short tube 3 is located outside the cushion pier 7. After the casting is completed, the templates of the frame beam 4 and the cushion pier 7 are removed, and the anchor cable is tensioned and locked by the pad 8 and the anchor 9. When the anchor cable is tensioned and locked, the grouting pipe is put into any short tube 3 as a grouting hole for grouting. When the slurry overflows from the pipe mouth of the other short tube 3, it means that the grouting is full, thereby isolating the environmental soil and environmental water from eroding the anchor cable, thereby improving the durability of the anchor cable. After the anchor cable passes the inspection, the anchor can be sealed, thereby completing the construction of the anchor cable.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A device for correcting the anchoring angle of a prestressed anchor cable, characterized in that: The invention comprises a steel pipe (1), wherein the steel pipe (1) is located in an anchor cable borehole (6), a plurality of short pipes (3) are provided at the starting end of the steel pipe (1), and the short pipes (3) are connected to the steel pipe (1), a steel plate (2) is further provided on the outer surface of the steel pipe (1), and the steel plate (2) is located on the inner side of the short pipe (3), and the short pipes (3) are symmetrically distributed along the center line of the steel plate (2).

2. The device for correcting the anchoring angle of a prestressed anchor cable according to claim 1, characterized in that: The end of the steel pipe (1) is wedge-shaped.

3. The device for correcting the anchoring angle of a prestressed anchor cable according to claim 2, characterized in that: The steel plate (2) is perpendicular to the axis of the steel pipe (1).

4. The device for correcting the anchoring angle of a prestressed anchor cable according to claim 3, characterized in that: The diameter of the steel pipe (1) is smaller than the diameter of the anchor cable drill hole (6).

5. The device for correcting the anchoring angle of a prestressed anchor cable according to claim 4, characterized in that: There are two short tubes (3), and the height of the upper end openings of the short tubes (3) is higher than the upper end surface of the steel plate (2).

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