Prestressed self-anchored anchor cable

Abstract

The utility model relates to the technical field of anchor cables, and discloses a prestressed self-anchored anchor cable which comprises an anchoring part and an extension cylinder, the anchoring part is fixedly connected and communicated with the extension cylinder, the anchoring part comprises a steel cylinder, an anchoring soil nail, a steel strand and a hinge shaft, the steel cylinder is fixedly connected and communicated with the extension cylinder, the anchoring soil nail is movably arranged on the side face of the steel cylinder, and the steel strand is arranged on the hinge shaft. The hinge shaft is installed in the steel cylinder, the anchoring soil nail is movably connected with the hinge shaft, the steel strand is matched with the anchoring soil nail, and the steel strand penetrates through the extension cylinder. According to the self-anchoring device, pulling force can be applied to the steel strand, so that the steel strand drives the anchoring soil nail to move, the anchoring soil nail can be conveniently fixed in a stable body, and self-anchoring of an anchoring part is achieved; when the sliding body is anchored, a grouting body can be injected into the extension cylinder and can provide a part of bonding frictional resistance, so that the combined action of the bonding frictional resistance and mechanical anchoring force is realized, and the sliding body is anchored.

Description

Technical Field

[0001] This utility model relates to the technical field of anchor cables, specifically a prestressed self-anchoring anchor cable. Background Technology

[0002] Prestressed anchor cable technology has been widely used in slope protection, foundation pit engineering, tunnel and mine reinforcement, etc., with advantages such as high efficiency, economy, strong adaptability and space saving. Prestressed anchor rods and cables actively apply axial prestress to form a "surface constraint-deep anchoring" reinforcement system in the rock and soil. The bond friction between the grout in the anchoring section and the stratum resists slippage, and the axial tensile force is generated by tensioning steel strands or steel bars. This force is diffused through the bearing plate to form a compressive stress field on the rock and soil, enhancing the shear strength of the rock and soil structure and achieving an organic combination of active reinforcement and passive load-bearing.

[0003] Currently, grouting anchor cables with steel strands are the mainstream method. However, during construction, in order to obtain sufficient bond friction, the length of the anchorage section is often increased, which increases the construction difficulty and material consumption. Alternatively, cracking of the grout or uneven grouting can lead to insufficient bond friction in the anchorage section, making it impossible to provide sufficient resistance to reinforce the soil and rock mass. Utility Model Content

[0004] The purpose of this invention is to provide a prestressed self-anchored anchor cable that can provide sufficient resistance while shortening the anchorage length and reducing the impact of grout quality defects on bond friction.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A prestressed self-anchored anchor cable includes an anchoring component and an extension cylinder. The anchoring component is fixedly connected to and communicates with the extension cylinder. The anchoring component includes a steel cylinder, an anchoring soil nail, a steel strand, and a hinge shaft. The steel cylinder is fixedly connected to and communicates with the extension cylinder. The anchoring soil nail is movably disposed on the side of the steel cylinder. The hinge shaft is installed inside the steel cylinder and is movably connected to the anchoring soil nail. The steel strand is configured to cooperate with the anchoring soil nail and passes through the extension cylinder.

[0007] Furthermore, the steel cylinder has multiple grooves on its side, and multiple soil anchors are provided. The soil anchors are matched with the grooves and are movably arranged in the grooves. A hinged ring and a bottom connecting ring are installed on the inner side of the soil anchor. The hinged ring is located in the middle of the inside of the soil anchor and is movably connected to a hinge shaft. The bottom connecting ring is connected to the steel strand.

[0008] Furthermore, the bottom end of the steel strand is provided with multiple branch lines, which are matched with the connecting ring, and the ends of the branch lines are fixedly connected to the connecting ring.

[0009] Furthermore, it also includes a sliding body and a stabilizing body, both of which have pre-drilled holes. A steel cylinder is placed in the drilled hole in the stabilizing body, and an extension cylinder passes through the drilled holes in the sliding body and the stabilizing body. The steel cylinder and the extension cylinder are filled with grout.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] This invention can apply tension to the steel strand, causing the steel strand to move the anchor soil nail, thereby facilitating the fixing of the anchor soil nail in the stable body and realizing the self-anchoring of the anchoring component; by injecting grout into the extension tube, the grout will provide a part of the adhesive friction resistance, realizing the combined action of adhesive friction resistance and mechanical anchoring force to anchor the sliding body.

[0012] This invention shortens the length of the anchoring section by setting anchoring components, while reducing the impact of grout quality defects on reducing adhesive friction. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the anchoring component in this utility model;

[0014] Figure 2 This is a schematic diagram illustrating the use of the anchoring components and extension cylinder in this utility model;

[0015] Figure 3 This is a partially enlarged schematic diagram of the anchoring component and the extension cylinder in this utility model.

[0016] Figure label:

[0017] 1-Steel cylinder, 2-Anchor soil nail, 3-Steel strand, 4-Hinged shaft, 5-Bottom connecting ring, 6-Hinged ring, 7-Sliding body, 8-Stabilizing body, 9-Grouting body, 10-Extension cylinder. Detailed Implementation

[0018] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0019] Please see Figure 1-3A prestressed self-anchored anchor cable includes an anchoring component and an extension cylinder 10. The anchoring component is fixedly connected to and communicates with the extension cylinder 10. The anchoring component includes a steel cylinder 1, an anchoring soil nail 2, a steel strand 3, and a hinge shaft 4. The steel cylinder 1 is fixedly connected to and communicates with the extension cylinder 10. The anchoring soil nail 2 is movably disposed on the side of the steel cylinder 1. The hinge shaft 4 is installed inside the steel cylinder 1. The anchoring soil nail 2 is movably connected to the hinge shaft 4. The steel strand 3 is configured to cooperate with the anchoring soil nail 2 and passes through the extension cylinder 10.

[0020] In practical use, by applying tension to the steel strand 3, the steel strand 3 can drive the anchor soil nail 2 to move, thereby facilitating the fixing of the anchor soil nail 2 in the stable body 8 and realizing the self-anchoring of the anchoring component; by injecting grout 9 into the extension cylinder 10, the grout 9 will provide a part of the adhesive friction resistance, realizing the combined action of adhesive friction resistance and mechanical anchoring force to anchor the sliding body 7. The setting of the anchoring component shortens the length of the anchoring section and reduces the impact of grout quality defects on reducing adhesive friction resistance.

[0021] In this embodiment, the steel cylinder 1 has multiple grooves on its side, and multiple soil anchors 2 are provided. The soil anchors 2 are matched with the grooves and are movably disposed in the grooves. A hinged ring 6 and a bottom connecting ring 5 are installed on the inner side of the soil anchor 2. The hinged ring 6 is located inside the soil anchor 2 and is movably connected to the hinge shaft 4. The bottom connecting ring 5 is connected to the steel strand 3. The bottom end of the steel strand 3 has multiple branch lines, and the branch lines are matched with the connecting ring 5. The branch line is fixedly connected to the connecting ring 5 at its end. Specifically, the groove can be designed to facilitate the movement of the anchoring soil nail 2. When tension is applied to the steel strand 3, the branch line at the bottom of the steel strand 3 will pull the connecting ring 5 synchronously. Pulling the connecting ring 5 will cause the anchoring soil nail 2 to move. Since the hinged ring 6 on the anchoring soil nail 2 is movably connected to the hinged shaft 4, the pulling of the connecting ring 5 will cause the anchoring soil nail 2 to move around the hinged shaft 4 and penetrate into the stabilizer 8, thereby providing mechanical anchoring force and realizing the self-anchoring of the anchoring component.

[0022] In this embodiment, a sliding body 7 and a stabilizing body 8 are also included. Both the sliding body 7 and the stabilizing body 8 have pre-drilled holes. A steel cylinder 1 is placed in the drilled hole in the stabilizing body 8, and an extension cylinder 10 passes through the drilled holes in the sliding body 7 and the stabilizing body 8. The steel cylinder 1 and the extension cylinder 10 are filled with grout 9. Specifically, grout 9 can be injected into the steel cylinder 1 and the extension cylinder 10. The grout 9 will provide a portion of the adhesive friction resistance, so that the adhesive friction resistance plus the mechanical anchoring force can work together to anchor the sliding body 7, shorten the anchoring section length, and at the same time reduce the impact of grout quality defects on reducing adhesive friction resistance.

[0023] It should be noted that in this document, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for 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. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "fixed," "installed," "connected," and "linked" should be interpreted broadly. For example, "linked" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a mechanical connection or an electrical connection; "linked" can be a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A prestressed self-anchored cable comprising an anchoring member and an extension cylinder (10), characterized in that: The anchoring component is fixedly connected to and communicates with the extension cylinder (10). The anchoring component includes a steel cylinder (1), an anchoring soil nail (2), a steel strand (3), and a hinge shaft (4). The steel cylinder (1) is fixedly connected to and communicates with the extension cylinder (10). The anchoring soil nail (2) is movably disposed on the side of the steel cylinder (1). The hinge shaft (4) is installed inside the steel cylinder (1). The anchoring soil nail (2) is movably connected to the hinge shaft (4). The steel strand (3) is configured to cooperate with the anchoring soil nail (2). The steel strand (3) passes through the extension cylinder (10).

2. The pre-stressed self-anchored cable of claim 1, wherein: The steel cylinder (1) has multiple grooves on its side, and multiple soil anchors (2) are provided. The soil anchors (2) are matched with the grooves and are movably arranged in the grooves. The soil anchors (2) are installed on the inner side of the soil anchors (2) with a hinge ring (6) and a bottom connecting ring (5). The hinge ring (6) is located on the inner side of the soil anchors (2) and is movably connected to the hinge shaft (4). The bottom connecting ring (5) is connected to the steel strand (3).

3. The pre-stressed self-anchored cable of claim 2, wherein: The bottom end of the steel strand (3) is provided with multiple branch lines, which are matched with the connecting ring (5). The ends of the branch lines are fixedly connected to the connecting ring (5).

4. The pre-stressed self-anchored cable of claim 1, wherein: It also includes a sliding body (7) and a stabilizing body (8), both of which have pre-drilled holes. A steel cylinder (1) is placed in the drilled hole in the stabilizing body (8), and an extension cylinder (10) passes through the drilled holes in the sliding body (7) and the stabilizing body (8). The steel cylinder (1) and the extension cylinder (10) are filled with grout (9).

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