Anchoring device and geotechnical engineering construction method

Abstract

The invention discloses an anchoring device and a construction method of geotechnical engineering. The anchoring device comprises a steel strand assembly and a structure reinforcing assembly. The steel strand assembly comprises a plurality of steel strands and is provided with anchoring sections and reinforcing sections, and the reinforcing sections are arranged at the ends, in the preset direction, of the anchoring sections. The structure reinforcing assembly comprises isolation frames, anti-bending parts, tensile parts and a reinforcing layer, the reinforcing section and the anchoring section are both connected with the isolation frames, the multiple steel strands are arranged on the isolation frames at intervals in the preset direction and are all connected with the isolation frames, the anti-bending parts are arranged on the reinforcing section and spirally surround the multiple steel strands in the preset direction, and the tensile parts are arranged on the reinforcing section. The tensile parts are arranged on the reinforcing section, one end, far away from the anchoring section, of each steel strand in the preset direction is connected with one tensile part, and the bending-resistant parts, the tensile parts, the steel strands on the reinforcing section and the isolation frame on the reinforcing section are all fixedly connected with the reinforcing layer. The anchoring device can have high tensile strength and deformation resistance.

Description

Technical Field

[0001] This application relates to the technical field of anchoring devices, and particularly to an anchoring device and a construction method for geotechnical engineering. Background Art

[0002] The prestressed anchoring structure is a common reinforcement structure in the field of geotechnical engineering and is widely used in the support of underground engineering, slopes, dam foundations and other fields. For special situations such as major geotechnical engineering within mines and cities, affected by engineering structures and geological conditions, rock masses are prone to displacement changes or damage phenomena. Therefore, it is necessary to apply a sufficiently large prestress to the rock mass to achieve the purpose of reinforcement control. The tensile strength and deformation resistance of traditional anchoring structures cannot meet the stability requirements of large-deformation rock masses. Summary of the Invention

[0003] In view of this, the purpose of this application is to overcome the deficiencies in the prior art and provide an anchoring device that can have high tensile strength and deformation resistance.

[0004] This application also provides a construction method for geotechnical engineering.

[0005] To achieve the above purpose, the technical solutions adopted in this application are as follows: The anchoring device according to the first aspect embodiment of this application includes: a steel strand assembly including multiple steel strands, each of the steel strands extending along a preset direction, the steel strand assembly having an anchoring section and a strengthening section, the strengthening section being provided at one end of the anchoring section along the preset direction; a structural strengthening assembly including an isolation frame, a bending resistance member, a tensile resistance member, and a reinforcement layer, at least one of the isolation frames being connected to both the strengthening section and the anchoring section, and the multiple steel strands being spaced apart around the preset direction on the isolation frame and all connected to the isolation frame, the bending resistance member being provided on the strengthening section, the bending resistance member spirally surrounding the multiple steel strands around the preset direction and connected to each of the steel strands, the tensile resistance member being provided on the strengthening section, and a tensile resistance member being connected to each end of each steel strand along the preset direction away from the anchoring section, and the bending resistance member, the tensile resistance member, the steel strands on the strengthening section, and the isolation frame on the strengthening section are all wrapped in the reinforcement layer.

[0006] The anchoring device of this application has the following advantages: In the anchoring device of the present application, since at least one isolation frame is connected to both the strengthening section and the anchoring section, and multiple steel strands are connected to the isolation frame at intervals around a preset direction and are all connected to the isolation frame, therefore, the relative position relationship between the multiple steel strands can be limited by the isolation frame so that each steel strand can extend along the preset direction. A steel reinforcement cage structure is formed by the connection between the multiple steel strands and the multiple isolation frames, and the steel reinforcement cage structure has good structural strength. Thus, when strengthening a geotechnical engineering project, the strengthening effect on the geotechnical engineering project can be improved. Further, since the bending resistance member is arranged on the strengthening section, the bending resistance member spirally surrounds the multiple steel strands around the preset direction and is connected to each steel strand. Thus, the bending resistance of each steel strand can be improved by the bending resistance member spirally surrounding the multiple steel strands, so as to improve the anti-deformation ability of each steel strand. Also, since the tensile member is arranged on the strengthening section and a tensile member is connected to one end of each steel strand away from the anchoring section along the preset direction, therefore, the tensile ability of each steel strand can be improved by the tensile member, thereby improving the tensile strength of each steel strand. Further, since the bending resistance member, the tensile member, the steel strands on the strengthening section, and the isolation frame on the strengthening section are wrapped in the reinforcement layer, thus, the bending resistance member, the tensile member, the steel strands on the strengthening section, and the isolation frame on the strengthening section can be integrally strengthened by the reinforcement layer to improve the stability of the connection relationship between the structural strengthening component and the steel strand component, thereby improving the structural strengthening ability of the structural strengthening component on the steel strand component. Thus, the anchoring device of the present application can have high tensile strength and deformation resistance, so that the anchoring device of the present application can meet the stability requirements of large-tonnage and large-deformation rock masses.

[0007] According to the anchoring device of the first aspect embodiment of the present application, the reinforcement layer covers the outside of the bending resistance member, the tensile member, the steel strands on the strengthening section, and the isolation frame on the strengthening section. The reinforcement layer has a fixing portion and a guiding portion. The bending resistance member, the tensile member, the steel strands on the strengthening section, and the isolation frame on the strengthening section are all wrapped in the fixing portion. The guiding portion is arranged at one end of the fixing portion away from the anchoring section along the preset direction, and the projection of the guiding portion on the fixing portion along the preset direction gradually decreases towards the direction away from the anchoring section.

[0008] According to the anchoring device of the first aspect embodiment of the present application, one end of the tensile member arranged close to the anchoring section along the preset direction has a tensile surface, and the tensile surface is arranged perpendicular to the preset direction. According to the anchoring device of the first aspect embodiment of the present application, the tensile member includes a first tensile portion and a second tensile portion. The steel strand is arranged between the first tensile portion and the second tensile portion. Both the first tensile portion and the second tensile portion are in contact with the steel strand, and the first tensile portion and the second tensile portion are fixedly connected.

[0009] According to the anchoring device of the first aspect embodiment of the present application, the first tensile part and the second tensile part are two split parts that are mutually engaged, and the first tensile part and the second tensile part are bolted together.

[0010] According to the anchoring device of the first aspect embodiment of the present application, the anchoring device further includes an anti-corrosion layer, and the anti-corrosion layer covers the tensile member and the steel strand, and is at least partially located between the tensile member and the reinforcement layer, and at least partially located between the steel strand and the reinforcement layer.

[0011] According to the anchoring device of the first aspect embodiment of the present application, the anchoring device further includes a protective member, and the protective member covers the anti-corrosion layer, and is at least partially located between the anti-corrosion layer and the reinforcement layer.

[0012] According to the construction method of geotechnical engineering of the second aspect embodiment of the present application, applying the above-mentioned anchoring device, the construction method of geotechnical engineering includes: Drill an anchoring hole from the surface of the rock formation inward; Install the anchoring device into the anchoring hole; Pour concrete slurry into the anchoring hole.

[0013] The construction method of the geotechnical engineering of the present application has the following advantages: In the construction method of the geotechnical engineering of the present application, the above-mentioned anchoring device can be installed in the anchoring hole of the rock formation, and the anchoring device is fixed in the anchoring hole by pouring concrete slurry into the anchoring hole, so as to realize the reinforcement effect of the anchoring device on the geotechnical engineering. In this process, because the above-mentioned anchoring device can have a high tensile strength and deformation resistance, therefore, the above-mentioned anchoring device can meet the stability requirements of large-deformation rock masses, so that the geotechnical engineering of the present application has strong structural stability.

[0014] According to the construction method of geotechnical engineering of the second aspect embodiment of the present application, the anchoring device further includes a fixing member and a tensioning member connected to the fixing member, and the construction method of geotechnical engineering further includes: When installing the anchoring device, fixedly connect the fixing member to the surface of the rock formation, and pass each steel strand of the steel strand assembly through the fixing member and the tensioning member, tension the steel strand by the tensioning member, and fix the steel strand by the tensioning member. Description of the Drawings

[0015] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the accompanying drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present application and should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0016] Figure 1 Shows the structural schematic diagram of the geotechnical engineering in the present application; Figure 2 Shows the front view structural schematic diagram of the anchoring device in the present application; Figure 3 Shows the structural schematic diagram of the strengthening section and the structural strengthening component in the present application; Figure 4 Shows the side view structural schematic diagram of the tensile member and the steel strand in the present application; Figure 5 Shows the front view structural schematic diagram of the tensile member and the steel strand in the present application; Figure 6 Shows the side view structural schematic diagram of the anchoring device in the present application; Figure 7 Shows the flow schematic diagram of the construction method of the geotechnical engineering in the present application.

[0017] Main element symbol description: 10 - Anchoring device; 100 - Steel strand assembly; 110 - Steel strand; 120 - Anchoring section; 130 - Strengthening section; 140 - Second protection part; 200 - Structural strengthening component; 210 - Isolation frame; 220 - Bending resistance member; 230 - Tensile member; 231 - Tensile surface; 232 - First tensile part; 233 - Second tensile part; 240 - Reinforcement layer; 241 - Fixing part; 242 - Guide part; 250 - First protection part; 300 - Fixing component; 310 - Fixing piece; 320 - Tensioning piece; 400 - Grouting pipe; 20 - Rock stratum; 21 - Anchoring hole; 30 - Concrete slurry; x - Preset direction. Detailed implementation manners

[0018] The following will describe in detail the embodiments of the present application. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present application and should not be construed as a limitation of the present application.

[0019] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0020] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more, unless otherwise specifically defined.

[0021] In the present application, unless otherwise clearly specified and limited, the terms such as "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0022] In the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0023] Referring to Figure 1 and Figure 2 As shown, the anchoring device 10 involved in the embodiment of the present application includes: a steel strand assembly 100 and a structural strengthening assembly 200.

[0024] Specifically, the strand assembly 100 includes a plurality of strands 110, each strand 110 extends along a preset direction x, the strand assembly 100 is provided with an anchoring section 120 and a strengthening section 130, and the strengthening section 130 is arranged at one end of the anchoring section 120 along the preset direction x; the structural strengthening assembly 200 includes an isolation frame 210, a bending-resistant member 220, a tensile member 230 and a reinforcement layer 240. At least one isolation frame 210 is connected to both the strengthening section 130 and the anchoring section 120, and the plurality of strands 110 are arranged at intervals around the preset direction x on the isolation frame 210 and are all connected to the isolation frame 210. The bending-resistant member 220 is arranged on the strengthening section 130, the bending-resistant member 220 spirally surrounds the plurality of strands 110 around the preset direction x and is connected to each strand 110. The tensile member 230 is arranged on the strengthening section 130, and a tensile member 230 is connected to one end of each strand 110 along the preset direction x away from the anchoring section 120. The bending-resistant member 220, the tensile member 230, the strands 110 on the strengthening section 130 and the isolation frame 210 on the strengthening section 130 are all wrapped in the reinforcement layer 240.

[0025] It should be noted that the preset direction x is Figure 1 the direction indicated by x in

[0026] In the anchoring device 10 of the present application, since at least one isolation frame 210 is connected to both the strengthening section 130 and the anchoring section 120, and multiple steel strands 110 are connected to the isolation frame 210 at intervals around the preset direction x and are all connected to the isolation frame 210, therefore, the relative positional relationship between the multiple steel strands 110 can be limited by the isolation frame 210, so that each steel strand 110 can extend along the preset direction x. A steel reinforcement cage structure is formed by the connection between the multiple steel strands 110 and the multiple isolation frames 210, and the steel reinforcement cage structure has good structural strength. In this way, when strengthening a geotechnical engineering, the strengthening effect on the geotechnical engineering can be improved. Further, since the bending resistance member 220 is arranged on the strengthening section 130, the bending resistance member 220 spirally surrounds the multiple steel strands 110 around the preset direction x and is connected to each steel strand 110. In this way, the bending resistance of each steel strand 110 can be improved by the bending resistance member 220 spirally surrounding the multiple steel strands 110, so as to improve the anti-deformation ability of each steel strand 110. Also, since the tensile member 230 is arranged on the strengthening section 130, and a tensile member 230 is connected to one end of each steel strand 110 along the preset direction x away from the anchoring section 120, therefore, the tensile ability of each steel strand 110 can be improved by the tensile member 230, thereby increasing the tensile strength of each steel strand 110. Further, since the bending resistance member 220, the tensile member 230, the steel strands 110 on the strengthening section 130, and the isolation frame 210 on the strengthening section 130 are all fixedly connected to the strengthening layer 240, in this way, the bending resistance member 220, the tensile member 230, the steel strands 110 on the strengthening section 130, and the isolation frame 210 on the strengthening section 130 can be integrally strengthened by the strengthening layer 240, so as to improve the stability of the connection relationship between the structural strengthening component 200 and the steel strand component 100, and thus improve the structural strengthening ability of the structural strengthening component 200 on the steel strand component 100. In this way, the anchoring device 10 of the present application can have high tensile strength and deformation resistance, so that the anchoring device 10 of the present application can meet the stability requirements of large-tonnage and large-deformation rock masses.

[0027] Specifically, in this embodiment, the isolation frame 210 and the tensile member 230 are arranged at intervals, and the tensile member 230 can displace along the preset direction x within the strengthening layer 240. When the steel strand 110 is subjected to a tensile force along the preset direction x, the tensile member 230 can move a small distance along the preset direction x within the strengthening layer 240 under the drive of the steel strand 110, so as to offset the stress of the strengthening layer 240 on the tensile member 230, thereby reducing the detachment of the structure within the strengthening section 130 from the strengthening layer under sudden large-tonnage stress, and thus further improving the tensile ability of the anchoring device 10.

[0028] Refer to Figure 3As shown, the reinforcement layer 240 is wrapped around the bending-resistant member 220, the tensile member 230, the steel strand 110 on the strengthening section 130, and the spacer 210 on the strengthening section 130. The reinforcement layer 240 has a fixing portion 241 and a guiding portion 242. The bending-resistant member 220, the tensile member 230, the steel strand 110 on the strengthening section 130, and the spacer 210 on the strengthening section 130 are all wrapped within the fixing portion 241. The guiding portion 242 is provided at one end of the fixing portion 241 away from the anchoring section 120 along the preset direction x, and the projection of the guiding portion 242 on the fixing portion 241 along the preset direction x gradually decreases in the direction away from the anchoring section 120.

[0029] In this embodiment, since the bending-resistant member 220, the tensile member 230, the steel strand 110 on the strengthening section 130, and the spacer 210 on the strengthening section 130 are all wrapped within the fixing portion 241, in this way, the overall fixation between the steel strand 110 on the strengthening section 130 and the structural strengthening component 200 can be achieved through the fixing portion 241, so as to improve the stability of the connection relationship between the structural strengthening component 200 and the steel strand assembly 100, thereby improving the structural strengthening ability of the structural strengthening component 200 to the steel strand assembly 100. Further, when installing the anchoring device 10, the anchoring device 10 is usually installed in the anchoring hole 21 of the rock formation 20. And during the installation process, in order for the strengthening section 130 to enter the anchoring hole 21 before the anchoring section 120, so that the strengthening section 130 can play a role in strengthening the anchoring section 120. Since the guiding portion 242 is provided at one end of the fixing portion 241 away from the anchoring section 120 along the preset direction x, and the projection of the guiding portion 242 on the fixing portion 241 along the preset direction x gradually decreases in the direction away from the anchoring section 120, in this way, when installing the anchoring device 10, the smoothness of the anchoring device 10 entering the anchoring hole 21 can be improved, so as to improve the installation efficiency of the anchoring device 10.

[0030] Refer to Figure 5 As shown, one end of the tensile member 230 arranged close to the anchoring section 120 along the preset direction x has a tensile surface 231, and the tensile surface 231 is arranged perpendicular to the preset direction x.

[0031] Specifically, in the strengthening section 130, isolation frames 210 are provided at both ends of the bending-resistant member 220 along the preset direction x to limit multiple steel strands 110 at the position where the bending-resistant member 220 is located through the isolation frames 210, thereby improving the connection stability between the bending-resistant member 220 and the multiple steel strands 110, improving the bending resistance of the bending-resistant member 220 to the steel strands 110. Further, the tensile member 230 is connected to the end of the steel strand 110 close to the guiding portion 242 along the preset direction x and is provided at one end of the isolation frame 210 away from the entrance of the anchoring hole 21 along the preset direction x. When the steel strand 110 is tightened, the tensile member 230 can abut against the isolation frame 210. In this way, the possibility of the steel strand 110 detaching from the isolation frame 210 when being tightened can be reduced, and the tensile capacity of the steel strand 110 can be improved through the tensile member 230.

[0032] In this embodiment, since the tensile surface 231 is arranged perpendicular to the preset direction x, the frictional resistance between the steel strand 110 and the tensile member 230 can be increased, so as to improve the connection stability between the steel strand 110 and the tensile member 230, prevent the steel strand 110 from detaching from the tensile member 230, and further prevent the steel strand 110 from detaching from the isolation frame 210 and the bending-resistant member 220, thereby improving the tensile capacity of the steel strand 110.

[0033] Refer to Figure 4 As shown, the tensile member 230 includes a first tensile portion 232 and a second tensile portion 233. The steel strand 110 is arranged between the first tensile portion 232 and the second tensile portion 233. Both the first tensile portion 232 and the second tensile portion 233 abut against the steel strand 110, and the first tensile portion 232 is fixedly connected to the second tensile portion 233.

[0034] Specifically, in this embodiment, the first tensile portion 232 and the second tensile portion 233 are respectively arranged on both sides of the steel strand 110 along its radial direction, and the fixing between the tensile member 230 and the steel strand 110 is realized by the closing of the first tensile portion 232 and the second tensile portion 233.

[0035] More specifically, in this embodiment, the first tensile portion 232 and the second tensile portion 233 are two split parts that are mutually engaged, and the first tensile portion 232 and the second tensile portion 233 are connected by bolts to realize the clamping of the steel strand 110 by the first tensile portion 232 and the second tensile portion 233.

[0036] In this embodiment, since the steel strand 110 is disposed between the first tensile part 232 and the second tensile part 233, both the first tensile part 232 and the second tensile part 233 abut against the steel strand 110, and the first tensile part 232 and the second tensile part 233 are fixedly connected. Thus, the steel strand 110 can be fixed between the first tensile part 232 and the second tensile part 233 through the connection between the first tensile part 232 and the second tensile part 233, so as to improve the installation efficiency between the tensile member 230 and the steel strand 110, and at the same time improve the connection stability between the tensile member 230 and the steel strand 110.

[0037] Specifically, the anchoring device 10 further includes an anti-corrosion layer, which is coated outside the tensile member 230 and the steel strand 110 and is at least partially located between the tensile member 230 and the reinforcing layer 240, and at least partially located between the steel strand 110 and the reinforcing layer 240.

[0038] In this embodiment, since the anti-corrosion layer is coated outside the tensile member 230 and the steel strand 110 and is at least partially located between the tensile member 230 and the reinforcing layer 240, and at least partially located between the steel strand 110 and the reinforcing layer 240. Thus, the anti-corrosion layer can prevent the tensile member 230 from directly contacting the reinforcing layer 240 and oxygen, inhibit the oxidation reaction of the tensile member 230, and delay the occurrence of corrosion of the tensile member 230. Similarly, the anti-corrosion layer can prevent the steel strand 110 from directly contacting the reinforcing layer 240 and oxygen, inhibit the oxidation reaction of the steel strand 110, and delay the occurrence of corrosion of the steel strand 110.

[0039] Specifically, in this embodiment, the anti-corrosion layer is a butter anti-corrosion layer. The butter can form a protective film on the metal surface to prevent the steel strand 110 and the tensile member 230 from directly contacting the reinforcing layer 240 and oxygen, thereby inhibiting the oxidation reaction and delaying the occurrence of corrosion, so as to play an anti-rust role.

[0040] Refer to Figure 5 As shown, the anchoring device 10 further includes a protective member, which is coated outside the anti-corrosion layer and is at least partially located between the anti-corrosion layer and the reinforcing layer 240.

[0041] In this embodiment, since the protective member is wrapped outside the anti-corrosion layer and at least partially located between the anti-corrosion layer and the reinforcement layer 240, thus, the tensile member 230 can be further protected by the protective member, which can not only improve the anti-corrosion effect, but also prevent the tensile member 230 from directly contacting the rock formation 20 and avoid damage to the tensile member 230 during the installation process of the anchoring device 10, so as to improve the installation convenience of the anchoring device 10. Similarly, the steel strand 110 can be further protected by the protective member, which can not only improve the anti-corrosion effect, but also prevent the steel strand 110 from directly contacting the rock formation 20 and avoid damage to the steel strand 110 during the installation process of the anchoring device 10, further improving the installation convenience of the anchoring device 10.

[0042] Specifically, in this embodiment, the protective member is a PVC hose. By sleeving the PVC hose outside the tensile member and the steel strand, the anti-corrosion effect on the tensile member and the steel strand can be achieved. In addition, in other embodiments, the protective member can also be other components that can be sleeved outside the tensile member and the steel strand and have anti-corrosion functions.

[0043] Specifically, referring to Figure 5 As shown, in this embodiment, the anti-corrosion layer includes a first anti-corrosion layer and a second anti-corrosion layer. The first anti-corrosion layer is wrapped outside the tensile member and is located between the tensile member and the reinforcement layer. The second anti-corrosion layer is wrapped outside the steel strand and at least partially located between the steel strand and the reinforcement layer. The protective member includes a first protective part 250 and a second protective part 140. The first protective part 250 is wrapped outside the first anti-corrosion layer and is located between the first anti-corrosion layer and the reinforcement layer 240; the second protective part 140 is wrapped outside the second anti-corrosion layer, and the part of the second protective part 140 located in the reinforcement section is located between the second anti-corrosion layer and the reinforcement layer 240.

[0044] Specifically, in this embodiment, the reinforcement layer 240 is prefabricated by consolidating with a cementitious material to have better tensile strength.

[0045] More specifically, in some embodiments, the reinforcement layer 240 is prefabricated by consolidating with materials such as a cement reinforcement layer 240 and / or a synthetic resin reinforcement layer 240 that can solidify from a plastic paste into a hard solid in a relatively short time, thereby improving the prefabrication efficiency of the reinforcement layer 240.

[0046] More specifically, in this embodiment, the bending-resistant member 220, the tensile member 230, the steel strand 110 on the strengthening section 130, and the spacer 210 on the strengthening section 130 can be placed in a precast mold, and then the material of the reinforcement layer 240 is poured into the precast mold, so that the reinforcement layer 240 can wrap around the bending-resistant member 220, the tensile member 230, the steel strand 110 on the strengthening section 130, and the spacer 210 on the strengthening section 130. At the same time, when the reinforcement layer 240 is cast and formed through the precast mold, the reinforcement layer 240 can be formed into a preset shape, so that the reinforcement layer 240 meets the requirement that the projection of the guiding portion 242 along the preset direction x on the fixing portion 241 gradually decreases in the direction away from the anchoring section 120.

[0047] Referring to Figure 7 As shown, for the construction method of geotechnical engineering involved in the embodiment of the present application, applying the above-mentioned anchoring device 10, the construction method of geotechnical engineering includes: S100: Drilling an anchoring hole 21 from the surface of the rock formation 20 into the rock formation; Specifically, an anchoring hole 21 is drilled from the surface of the rock formation 20 into the interior of the rock formation 20 along the preset direction x.

[0048] S200: Installing the anchoring device 10 into the anchoring hole 21; Specifically, the anchoring device 10 is pushed into the anchoring hole 21 along the preset direction x.

[0049] S300: Pouring concrete slurry 30 into the anchoring hole 21.

[0050] Specifically, the anchoring device 10 in the anchoring hole 21 is fixed by the concrete slurry 30.

[0051] In the construction method of the geotechnical engineering of the present application, the above-mentioned anchoring device 10 can be installed in the anchoring hole 21 of the rock formation 20, and the anchoring device 10 is fixed in the anchoring hole 21 by pouring concrete slurry 30 into the anchoring hole 21, so as to realize the reinforcement effect of the anchoring device 10 on the geotechnical engineering. In this process, since the above-mentioned anchoring device 10 can have high tensile strength and deformation resistance, the above-mentioned anchoring device 10 can meet the stability requirements of large-deformation rock masses, so that the geotechnical engineering of the present application has strong structural stability.

[0052] Referring to Figure 1 As shown, the anchoring device 10 further includes a fixing member 310 and a tensioning member 320 connected to the fixing member 310. The fixing member 310 and the tensioning member 320 form a fixing assembly 300. The construction method of geotechnical engineering further includes: S210: When installing the anchoring device 10, fix the fixing component 300 on the surface of the rock formation 20 at the edge of the anchoring hole 21, and tension and fix the steel strand assembly 100 of the anchoring device 10 through the fixing component 300.

[0053] In this embodiment, when installing the anchoring device 10, the fixing component 300 can be fixed on the surface of the rock formation 20 at the edge of the anchoring hole 21, so as to facilitate the fixing of the steel strand assembly 100 by the fixing component 300. At the same time, the steel strand assembly 100 of the anchoring device 10 can be tensioned and fixed through the fixing component 300, so that each steel strand 110 of the steel strand assembly 100 can be in a tensioned state, so as to improve the reinforcement effect on the geotechnical engineering.

[0054] Refer to Figure 2 As shown, the construction method of the geotechnical engineering further includes: S211: When tensioning and fixing the steel strand assembly 100 through the fixing component 300, fixedly connect the fixing member 310 to the surface of the rock formation 20, and pass each steel strand 110 of the steel strand assembly 100 through the fixing member 310 and the tensioning member 320, so that the tensioning member 320 tensions the steel strand 110, and fixes the steel strand 110 through the tensioning member 320.

[0055] Specifically, the tensioning member 320 is provided with an internal thread, the steel strand 110 is provided with an external thread, and the tensioning member 320 is threadedly connected to the steel strand 110. When the tensioning member 320 moves relative to the steel strand 110 along the preset direction x close to the fixing member 310, the steel strand 110 can be tensioned by the tensioning member 320, so as to realize the tensioning and fixing of the steel strand 110.

[0056] In this embodiment, the connection between the fixing component 300 and the rock formation 20 can be realized through the fixed connection between the fixing member 310 and the surface of the rock formation 20. Further, the steel strand 110 can be tensioned through the tensioning member 320, so as to realize the tensioning effect of the fixing component 300 on the steel strand 110, thereby improving the reinforcement effect of the steel strand assembly 100 on the geotechnical engineering.

[0057] Refer to Figure 6 As shown, the anchoring device 10 further includes a grouting pipe 400, and the construction method of the geotechnical engineering further includes: S310: When pouring the concrete slurry 30 into the anchoring hole 21, pass the grouting pipe 400 through the anchoring hole 21, and pour the concrete slurry 30 into the anchoring hole 21 through the grouting pipe 400.

[0058] Specifically, when the grouting pipe 400 is inserted into the anchoring hole 21, the grouting pipe 400 is located between multiple steel strands 110. In this way, when pouring the concrete slurry 30 into the anchoring hole 21 through the grouting pipe 400, the concrete slurry 30 can be evenly distributed between the multiple steel strands 110.

[0059] In this embodiment, the grouting pipe 400 can be inserted into the anchoring hole 21, and the concrete slurry 30 is poured into the anchoring hole 21 through the grouting pipe 400, so that the entire anchoring hole 21 can be filled with the concrete slurry 30, thereby improving the uniformity of the distribution of the concrete slurry 30 in the anchoring hole 21, and thus improving the connection stability between the rock and soil layer and the anchoring device 10, and further improving the structural strength and structural stability of the geotechnical engineering.

[0060] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0061] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. An anchoring device, characterized in that: include: A steel strand assembly, comprising a plurality of steel strands, each of which is extended along a preset direction, and the steel strand assembly is provided with an anchoring section and a reinforcing section, wherein the reinforcing section is arranged at one end of the anchoring section along the preset direction; A structural reinforcement component includes an isolation frame, an anti-bending member, an anti-tensile member and a reinforcement layer, wherein at least one of the isolation frames is connected to each of the reinforcement section and the anchoring section, and a plurality of the steel strands are arranged on the isolation frame at intervals around the preset direction and are all connected to the isolation frame, the anti-bending member is arranged on the reinforcement section, the anti-bending member is spirally wound around the plurality of steel strands around the preset direction and is connected to each of the steel strands, the anti-tensile member is arranged on the reinforcement section, and the end of each steel strand away from the anchoring section along the preset direction is connected to the anti-tensile member, the anti-bending member, the anti-tensile member, the steel strands on the reinforcement section and the isolation frame on the reinforcement section are all wrapped in the reinforcement layer.

2. The anchoring device according to claim 1, characterized in that: The reinforcement layer is coated on the anti-bending member, the anti-tensile member, the steel strands on the reinforcement section and the isolation frame on the reinforcement section. The reinforcement layer has a fixing portion and a guide portion. The anti-bending member, the anti-tensile member, the steel strands on the reinforcement section and the isolation frame on the reinforcement section are all wrapped in the fixing portion. The guide portion is arranged at one end of the fixing portion away from the anchoring section along the preset direction, and the projection of the guide portion on the fixing portion along the preset direction gradually decreases toward the direction away from the anchoring section.

3. The anchoring device according to claim 1, characterized in that: One end of the tensile member disposed along the preset direction close to the anchoring section has a tensile surface, and the tensile surface is disposed perpendicular to the preset direction.

4. The anchoring device according to claim 1, characterized in that: The tensile member includes a first tensile portion and a second tensile portion, the steel strand is arranged between the first tensile portion and the second tensile portion, the first tensile portion and the second tensile portion are both against the steel strand, and the first tensile portion is fixedly connected to the second tensile portion.

5. The anchoring device according to claim 4, characterized in that: The first tensile part and the second tensile part are two separate bodies embedded with each other, and the first tensile part and the second tensile part are connected with each other by bolts.

6. The anchoring device according to claim 1, characterized in that: The anchoring device also includes an anti-corrosion layer, which is coated on the outside of the tensile member and the steel strand, and is at least partially located between the tensile member and the reinforcement layer, and at least partially located between the steel strand and the reinforcement layer.

7. The anchoring device according to claim 6, characterized in that: The anchoring device also includes a protective member, which is coated on the outside of the anti-corrosion layer and is at least partially located between the anti-corrosion layer and the reinforcement layer.

8. The anchoring device according to claim 1, characterized in that: The reinforcement layer is prefabricated by consolidating cementitious materials.

9. A geotechnical engineering construction method, characterized in that: Using the anchoring device according to any one of claims 1 to 8, the geotechnical engineering construction method comprises: Drill anchor holes from the surface of the rock formation inward; installing the anchoring device into the anchoring hole; Pour concrete slurry into the anchor hole.

10. The geotechnical engineering construction method according to claim 9, characterized in that: The anchoring device further includes a fixing member and a tensioning member connected to the fixing member, and the geotechnical engineering construction method further includes: When installing the anchoring device, the fixing member is fixedly connected to the surface of the rock formation, and each steel strand of the steel strand assembly passes through the fixing member and the tensioning member, so that the tensioning member tightens the steel strand and fixes the steel strand through the tensioning member.

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