Anchoring structure for anchor cable, steel strand assembly and tension type anchor cable

Abstract

The utility model relates to an anchoring structure for an anchor cable, a steel strand assembly and a tension type anchor cable, and relates to the technical field of slope retaining construction, the anchoring structure comprises an anchoring cylinder, the anchoring cylinder is used for being fixedly arranged on the outer side of a steel strand body and coaxially arranged with the steel strand body, and the anchoring cylinder is located at the part, stretching into an anchoring hole, of the steel strand body; the anchoring cylinder is used for abutting against a solidified grouting body. And the annular boss is arranged in the middle of the anchoring cylinder, the annular boss and the anchoring cylinder are coaxially arranged, and the annular boss is used for abutting against a solidified grouting body and is matched with the anchoring cylinder to limit the relative position of the steel strand body and the grouting body. Due to the fact that the anchoring barrel and the annular boss jointly abut against the solidified grouting body, the stability of the anchor cable under the working condition of relatively small prestress is guaranteed, the structure is simple, manufacturing is convenient, and the problems that in the prior art, in slope retaining construction, performance is wasted due to the fact that an existing anchor cable structure is directly adopted, the structure is complex, and construction cost is high are solved. And the manufacturing process is tedious.

Description

Technical Field

[0001] The utility model relates to the technical field of slope support construction, in particular to an anchoring structure for an anchor cable, a steel strand assembly and a tension-type anchor cable. Background Art

[0002] Tension anchor cables transmit external forces to the stable stratum through the bond strength, mechanical bite, and friction between the steel strands and the grouting, and between the grouting and the surrounding rock mass. Force analysis shows that the primary mechanism for this is the uneven tensile deformation of the anchor section, which in turn drives deformation of the rock mass in conjunction with the anchoring section, thereby leveraging the shear strength of the surrounding rock mass. Research has shown that under extreme conditions, the weakest point of tension anchor cables is not the bond interface between the grouting and the rock, but rather the debonding failure between the steel strands and the grouting.

[0003] In the prior art, there is a large-tonnage enlarged head anchor cable with an extruded lock spring and pressure plate stress dispersion type, such as patent number CN203701090U, which includes a steel strand, a locking device, a compression spring, a pressure-bearing steel plate retaining ring, a guide sleeve, a grouting stone body, a steel strand bracket, an anchor pad, and a working anchor. The anchor cable skeleton formed by the steel strands of this product has a smaller overall diameter, which avoids obstruction and interference with the hole wall when placed in the anchor hole. The conical guide sleeve installed at the front end of the steel strand can squeeze and separate the quicksand and slurry in the anchor hole, squeeze and expand the hole wall, and ensure the smooth advancement of the anchor cable. After grouting and forming, the dispersed structure composed of the locking device, the pressure-bearing steel plate retaining ring, the compressible spring and the steel strand work together with the cement stone body to withstand large prestress and avoid the separation of the steel strand and the grouting stone body.

[0004] However, in slope support construction, the prestress borne by the anchor cable is relatively small. Directly using the existing anchor cable structure will result in a waste of performance, and there are problems such as complex structure and cumbersome manufacturing process. Utility Model Content

[0005] The present application provides an anchoring structure, a steel strand assembly and a tension-type anchor cable for an anchor cable, which can solve the problem in the prior art that in slope support construction, the prestressed stress borne by the anchor cable is relatively small, and directly using the existing anchor cable structure will result in a waste of performance, a complex structure and a cumbersome manufacturing process.

[0006] In a first aspect, an embodiment of the present application provides an anchoring structure for an anchor cable, comprising:

[0007] An anchoring barrel, which is used to be fixedly arranged on the outside of the steel strand body and coaxially arranged with the steel strand body, the anchoring barrel is located at the portion of the steel strand body extending into the anchoring hole, and the anchoring barrel is used to abut against the solidified grouting body;

[0008] An annular boss is arranged in the middle of the anchoring tube and is coaxial with the anchoring tube. The annular boss is used to abut against the solidified grouting body and cooperate with the anchoring tube to limit the relative position of the steel strand body and the grouting body.

[0009] In one embodiment, an abutment joint is provided at one end of the anchoring tube away from the bottom of the anchoring hole, the cross section of the abutment joint is a circular ring, and the outer diameter of the abutment joint is greater than the outer diameter of the anchoring tube.

[0010] In one embodiment, a transition abutment section is provided between the abutment joint and the anchoring tube, and an outer side of the transition abutment section is provided with a connected inner concave arc surface and an outer convex arc surface, the side of the inner concave arc surface away from the outer convex arc surface is connected to the abutment joint, and the side of the outer convex arc surface away from the inner concave arc surface is connected to the anchoring tube.

[0011] In one embodiment, the outer diameter of the annular boss is the same as the outer diameter of the abutment head.

[0012] In one embodiment, a plurality of annular grooves are provided on the outer circumference of the anchoring tube, and the plurality of annular grooves are spaced apart along the axial direction of the anchoring tube, and the annular grooves are used to abut against the solidified grouting body.

[0013] In one embodiment, the outer sides of the anchoring cylinder and the annular boss are both provided with an anti-corrosion coating.

[0014] In one embodiment, the anchoring sleeve is an extrusion sleeve.

[0015] In one embodiment, a compression spring is provided on the inner side of the anchoring cylinder.

[0016] In a second aspect, an embodiment of the present application further provides a steel strand assembly, comprising:

[0017] A steel strand body, one end of which is used to extend into the anchor hole;

[0018] An anchoring cylinder, which is fixedly arranged on the outside of the steel strand body and coaxially arranged with the steel strand body, the anchoring cylinder is located at the portion of the steel strand body extending into the anchoring hole, and is used to abut against the solidified grouting body;

[0019] An annular boss is arranged in the middle of the anchoring tube and is coaxial with the anchoring tube. The annular boss is used to abut against the solidified grouting body and cooperate with the anchoring tube to limit the relative position of the steel strand body and the grouting body.

[0020] In a third aspect, an embodiment of the present application further provides a tension-type anchor cable, which includes a plurality of the above-mentioned steel strand assemblies.

[0021] The beneficial effects of the technical solutions provided in the embodiments of the present application include:

[0022] When using the anchoring structure for the anchor cable, the anchoring tube is fixedly set on the outside of the steel strand body and is coaxially arranged with the steel strand body. The anchoring tube is located at the part of the steel strand body that extends into the anchor hole. The anchoring tube is used to mutually support the solidified grouting body. The annular boss is set in the middle of the anchoring tube and is coaxially arranged with the anchoring tube. The annular boss is used to mutually support the solidified grouting body and cooperate with the anchoring tube to limit the relative position of the steel strand body and the grouting body. Since the anchoring tube and the annular boss jointly support the solidified grouting body, the stability of the anchor cable is guaranteed under relatively small prestress conditions, and the structure is simple and easy to manufacture. This solves the problem in the prior art that in slope support construction, the prestress borne by the anchor cable is relatively small, and the direct use of the existing anchor cable structure will result in waste of performance, and there are problems of complex structure and cumbersome manufacturing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0024] Figure 1 This is a structural schematic diagram of an embodiment of a steel strand assembly of the present utility model.

[0025] In the figure: 1. anchoring tube; 11. annular groove; 2. steel strand body; 3. annular boss; 4. abutment joint; 5. transition abutment section; 51. inner concave arc surface; 52. outer convex arc surface; 6. extrusion spring. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] The embodiments of the present application provide an anchoring structure, a steel strand assembly and a tension-type anchor cable for an anchor cable, which can solve the problem in the prior art that in slope support construction, the prestressed stress borne by the anchor cable is relatively small, and directly using the existing anchor cable structure will result in a waste of performance, a complex structure and a cumbersome manufacturing process.

[0028] like Figure 1 As shown, on the one hand, the present application provides an anchoring structure for an anchor cable, which includes:

[0029] An anchoring barrel 1 is fixedly mounted on the outside of the steel strand body 2 and is coaxially arranged with the steel strand body 2. The anchoring barrel 1 is located at the portion of the steel strand body 2 extending into the anchoring hole. The anchoring barrel 1 is used to abut against the solidified grouting body.

[0030] The annular boss 3 is arranged in the middle of the anchor tube 1 and is coaxial with the anchor tube 1. The annular boss 3 is used to abut against the solidified grouting body and cooperate with the anchor tube 1 to limit the relative position of the steel strand body 2 and the grouting body.

[0031] When using the anchoring structure for the anchor cable, the anchoring tube 1 is fixedly set on the outside of the steel strand body 2 and is coaxially arranged with the steel strand body 2. The anchoring tube 1 is located at the part of the steel strand body 2 that extends into the anchor hole. The anchoring tube 1 is used to mutually support the solidified grouting body. The annular boss 3 is set in the middle of the anchoring tube 1 and is coaxially arranged with the anchoring tube 1. The annular boss 3 is used to mutually support the solidified grouting body and cooperate with the anchoring tube 1 to limit the relative position of the steel strand body 2 and the grouting body. Since the anchoring tube 1 and the annular boss 3 jointly support the solidified grouting body, the stability of the anchor cable is guaranteed under relatively small prestress conditions, and the structure is simple and easy to manufacture. This solves the problem in the prior art that in slope support construction, the prestress borne by the anchor cable is relatively small, and the direct use of the existing anchor cable structure will result in a waste of performance, and there are problems of complex structure and cumbersome manufacturing process.

[0032] like Figure 1 As shown, in some optional embodiments, an abutment joint 4 is provided at one end of the anchor tube 1 away from the bottom of the anchor hole. The cross section of the abutment joint 4 is a circular ring, and the outer diameter of the abutment joint 4 is larger than the outer diameter of the anchor tube 1.

[0033] In this embodiment, a butt joint 4 is provided at the end of the anchor tube 1 away from the bottom of the anchor hole. The cross section of the butt joint 4 is a circular ring, and the outer diameter of the butt joint 4 is larger than the outer diameter of the anchor tube 1, further expanding the direct force contact surface between the anchor structure for the anchor cable and the grouting body, thereby improving the safety of the anchor structure for the anchor cable.

[0034] In this example, the cross section of the abutment head 4 refers to a cross section perpendicular to the axis of the abutment head 4 .

[0035] like Figure 1As shown, in some optional embodiments, a transition abutment section 5 is further provided between the abutment 4 and the anchor tube 1, and an outer side of the transition abutment section 5 is provided with a connected inner concave arc surface 51 and an outer convex arc surface 52, the side of the inner concave arc surface 51 away from the outer convex arc surface 52 is connected to the abutment 4, and the side of the outer convex arc surface 52 away from the inner concave arc surface 51 is connected to the anchor tube 1.

[0036] In this embodiment, a transition supporting section 5 is further provided between the abutment 4 and the anchor tube 1. The outer side of the transition supporting section 5 is provided with an inner concave arc surface 51 and an outer convex arc surface 52 connected thereto. The side of the inner concave arc surface 51 away from the outer convex arc surface 52 is connected to the abutment 4, and the side of the outer convex arc surface 52 away from the inner concave arc surface 51 is connected to the anchor tube 1. The inner concave arc surface 51 further expands the direct force contact surface between the anchoring structure for the anchor cable and the grouting body, thereby improving the safety of the anchoring structure for the anchor cable. The outer convex arc surface 52 ensures the connection stability between the transition supporting section 5 and the anchor tube 1.

[0037] In this example, the central angle of the arc of the inner concave arc surface 51 is greater than the central angle of the arc of the outer convex arc surface 52 .

[0038] like Figure 1 As shown, in some optional embodiments, the outer diameter of the annular boss 3 is the same as the outer diameter of the abutment head 4 .

[0039] In this embodiment, the outer diameter of the annular boss 3 is the same as the outer diameter of the abutment head 4 , so that the anchoring structure for the anchor cable can be placed stably during transportation, making transportation more convenient.

[0040] like Figure 1 As shown, in some optional embodiments, a plurality of annular grooves 11 are provided on the outer circumference of the anchor tube 1 , and the plurality of annular grooves 11 are spaced apart along the axial direction of the anchor tube 1 , and the annular grooves 11 are used to abut against the solidified grouting body.

[0041] In this embodiment, a plurality of annular grooves 11 are provided on the outer periphery of the anchor tube 1, and the plurality of annular grooves 11 are arranged at intervals along the axial direction of the anchor tube 1. The annular grooves 11 are used to support each other with the solidified grouting body. Since the grouting body fills the annular grooves 11, the annular grooves 11 further expand the direct force contact surface between the anchor structure for the anchor cable and the grouting body, thereby improving the safety of the anchor structure for the anchor cable.

[0042] In some optional embodiments, the outer sides of the anchoring tube 1 and the annular boss 3 are both provided with an anti-corrosion coating.

[0043] In this embodiment, an anti-corrosion coating is provided on the outside of the anchor tube 1 and the annular boss 3 to prevent the anchor tube 1 and the annular boss 3 from being corroded, which would cause structural damage and affect the safety of the anchor structure for the anchor cable.

[0044] In some optional embodiments, the anchoring sleeve 1 is an extrusion sleeve.

[0045] In this embodiment, the anchoring tube 1 is an extrusion sleeve, and the method of installing the anchoring tube 1 on the steel strand body 2 is simpler and more suitable for the use environment.

[0046] like Figure 1 As shown, in some optional embodiments, a compression spring 6 is provided on the inner side of the anchoring tube 1 .

[0047] In this embodiment, an extrusion spring 6 is provided on the inner side of the anchor tube 1. During the fixing process of the anchor tube 1, the fixing effect of the anchor tube 1 can be further improved by the extrusion spring 6, thereby preventing the anchor tube 1 from separating from the steel strand body 2 and affecting the safety of the anchoring structure for the anchor cable.

[0048] like Figure 1 As shown, on the one hand, the present application also provides a steel strand assembly, which includes:

[0049] A steel strand body 2, one end of which is used to extend into the anchor hole;

[0050] An anchoring tube 1 is fixedly arranged on the outside of the steel strand body 2 and is coaxially arranged with the steel strand body 2. The anchoring tube 1 is located at the portion of the steel strand body 2 extending into the anchoring hole. The anchoring tube 1 is used to abut against the solidified grouting body.

[0051] The annular boss 3 is arranged in the middle of the anchor tube 1 and is coaxial with the anchor tube 1. The annular boss 3 is used to abut against the solidified grouting body and cooperate with the anchor tube 1 to limit the relative position of the steel strand body 2 and the grouting body.

[0052] When using the anchoring structure for the anchor cable, the anchoring tube 1 is fixedly set on the outside of the steel strand body 2 and is coaxially arranged with the steel strand body 2. The anchoring tube 1 is located at the part of the steel strand body 2 that extends into the anchor hole. The anchoring tube 1 is used to mutually support the solidified grouting body. The annular boss 3 is set in the middle of the anchoring tube 1 and is coaxially arranged with the anchoring tube 1. The annular boss 3 is used to mutually support the solidified grouting body and cooperate with the anchoring tube 1 to limit the relative position of the steel strand body 2 and the grouting body. Since the anchoring tube 1 and the annular boss 3 jointly support the solidified grouting body, the stability of the anchor cable is guaranteed under relatively small prestress conditions, and the structure is simple and easy to manufacture. This solves the problem in the prior art that in slope support construction, the prestress borne by the anchor cable is relatively small, and the direct use of the existing anchor cable structure will result in a waste of performance, and there are problems of complex structure and cumbersome manufacturing process.

[0053] like Figure 1 As shown, on the other hand, the present application also provides a tension type anchor cable, which includes a plurality of the above-mentioned steel strand assemblies.

[0054] When using the anchoring structure for the anchor cable, the anchoring tube 1 is fixedly set on the outside of the steel strand body 2 and is coaxially arranged with the steel strand body 2. The anchoring tube 1 is located at the part of the steel strand body 2 that extends into the anchor hole. The anchoring tube 1 is used to mutually support the solidified grouting body. The annular boss 3 is set in the middle of the anchoring tube 1 and is coaxially arranged with the anchoring tube 1. The annular boss 3 is used to mutually support the solidified grouting body and cooperate with the anchoring tube 1 to limit the relative position of the steel strand body 2 and the grouting body. Since the anchoring tube 1 and the annular boss 3 jointly support the solidified grouting body, the stability of the anchor cable is guaranteed under relatively small prestress conditions, and the structure is simple and easy to manufacture. This solves the problem in the prior art that in slope support construction, the prestress borne by the anchor cable is relatively small, and the direct use of the existing anchor cable structure will result in a waste of performance, and there are problems of complex structure and cumbersome manufacturing process.

[0055] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0056] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0057] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. An anchoring structure for an anchor cable, characterized in that: include: An anchoring cylinder (1) is used for being fixedly arranged on the outside of the steel strand body (2) and being coaxially arranged with the steel strand body (2), the anchoring cylinder (1) being located at the portion of the steel strand body (2) extending into the anchoring hole, and the anchoring cylinder (1) being used for mutually supporting the solidified grouting body; An annular boss (3) is arranged in the middle of the anchor cylinder (1) and is coaxially arranged with the anchor cylinder (1). The annular boss (3) is used to abut against the solidified grouting body and cooperate with the anchor cylinder (1) to limit the relative position of the steel strand body (2) and the grouting body.

2. An anchoring structure for an anchor cable according to claim 1, characterized in that: An abutment joint (4) is provided at one end of the anchoring tube (1) away from the bottom of the anchoring hole. The cross section of the abutment joint (4) is a circular ring, and the outer diameter of the abutment joint (4) is greater than the outer diameter of the anchoring tube (1).

3. An anchoring structure for an anchor cable according to claim 2, characterized in that: A transition abutting section (5) is further provided between the abutting joint (4) and the anchoring tube (1). The outer side of the transition abutting section (5) is provided with a connected inner concave arc surface (51) and an outer convex arc surface (52). The side of the inner concave arc surface (51) away from the outer convex arc surface (52) is connected to the abutting joint (4), and the side of the outer convex arc surface (52) away from the inner concave arc surface (51) is connected to the anchoring tube (1).

4. The anchoring structure for an anchor cable according to claim 2, characterized in that: The outer diameter of the annular boss (3) is the same as the outer diameter of the abutment head (4).

5. The anchoring structure for an anchor cable according to claim 1, characterized in that: A plurality of annular grooves (11) are provided on the outer periphery of the anchoring cylinder (1), and the plurality of annular grooves (11) are spaced apart along the axial direction of the anchoring cylinder (1), and the annular grooves (11) are used to abut against the solidified grouting body.

6. The anchoring structure for an anchor cable according to claim 1, characterized in that: The outer sides of the anchoring cylinder (1) and the annular boss (3) are both provided with an anti-corrosion coating.

7. The anchoring structure for an anchor cable according to claim 1, characterized in that: The anchoring cylinder (1) is an extrusion sleeve.

8. An anchoring structure for an anchor cable according to claim 7, characterized in that: A compression spring (6) is provided on the inner side of the anchoring cylinder (1).

9. A steel strand assembly, characterized in that: include: A steel strand body (2), one end of which is used to extend into the anchor hole; An anchoring cylinder (1) is fixedly arranged on the outside of the steel strand body (2) and is coaxially arranged with the steel strand body (2). The anchoring cylinder (1) is located at the portion of the steel strand body (2) extending into the anchoring hole. The anchoring cylinder (1) is used to abut against the solidified grouting body. An annular boss (3) is arranged in the middle of the anchor cylinder (1) and is coaxially arranged with the anchor cylinder (1). The annular boss (3) is used to abut against the solidified grouting body and cooperate with the anchor cylinder (1) to limit the relative position of the steel strand body (2) and the grouting body.

10. A tension type anchor cable, characterized in that: The invention comprises a plurality of steel strand assemblies as claimed in claim 9.

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