Side slope anchoring structure for construction

Abstract

The invention belongs to the technical field of slope supporting, and particularly relates to a slope anchoring structure for construction. The side slope anchoring structure comprises an anchor head fixing part, the anchor head fixing part comprises a wire stringing ring and a guide ring, the wire stringing ring is used for fixing a plurality of stranded wires in the circumferential direction of the wire stringing ring, and the guide ring is arranged at the ends of the stranded wires and enables the ends of the stranded wires to be close to each other; the anchor head fixing part further comprises an adjusting assembly arranged between the wire stringing ring and the guide ring. The adjusting assembly comprises a fixing cylinder, a piston, a wire stranding ring, a connecting rod and an air pipe. By arranging the adjusting assembly between the stringing ring and the guide ring, stretching and unfolding of the adjusting assembly are controlled in a pneumatic mode, the occupied space is small, and the anchor rod cannot be affected; in addition, the existing high-pressure gas transmission equipment can be adopted as the pneumatic power equipment, and the advantages of being good in economical efficiency and convenient to operate are achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of slope support, and particularly relates to a slope anchoring structure for construction. Background Art

[0002] Anchoring devices are commonly used in slope support to increase the strength of slopes. Currently, most construction is for rock slope support. During the construction of rock slope support, after drilling holes in the rock slope with a drill bit, the anchoring device is inserted into the holes and grouted.

[0003] The anchoring device for rock slopes includes an anchor head, a drill rod, and a cable. After construction, the anchor head and the cable remain in the holes, and the overall strength of the slope is improved after the concrete solidifies. However, the above-mentioned anchoring device cannot be directly used for sandy loam slopes. Since the strength of sandy loam slopes is lower than that of rock slopes and the soil has a large mobility, the existing anchoring devices cannot meet the requirements of sandy loam slope support.

[0004] The document with the authorization announcement number CN115341540B discloses an anchoring device for sandy loam slope support, which includes an anchor head assembly, an anchoring assembly, and an expansion frame assembly connected between the anchor head assembly and the anchoring assembly. Among them, the expansion frame assembly includes a plurality of first plates hinged to the end of the anchor rod. The end of the anchor rod is threadedly connected with a thrust ring, and a plurality of push plates are hinged to the thrust ring. The ends of the plurality of push plates are respectively hinged to the plurality of first plates. After the anchoring device is driven into the soil, the expansion frame assembly can expand and open, increasing the force between the anchor head assembly and the soil, increasing the grouting range, and improving the support effect of the anchoring device in sandy loam slopes.

[0005] However, after the anchor rod reaches the predetermined depth, due to the relatively deep drilling depth, it is difficult to rotate the anchor rod outside the drill hole; moreover, during implementation, there is generally a reserved depth between the head of the anchor rod and the bottom surface of the drill hole. At this time, when rotating the anchor rod outside the hole, the anchor rod is also prone to displacement, ultimately affecting the pouring effect of the anchor rod.

[0006] Therefore, the inventor of the present invention has proposed a slope anchoring structure for construction to solve the above technical problems. Summary of the Invention

[0007] Aiming at the above existing problems, the purpose of the present invention is to provide a slope anchoring structure for construction. By setting an adjustment component between the wire rack ring and the guide ring, the telescopic and unfolding of the adjustment component are controlled pneumatically, which not only occupies a small space but also does not affect the anchor rod itself. In addition, the power equipment for realizing pneumatic control can adopt existing high-pressure gas transmission equipment, which has the advantages of good economy and convenient operation.

[0008] The specific technical solution of the present invention is as follows: A slope anchoring structure for construction, including an anchor head fixing part. The anchor head fixing part includes a wire laying ring and a guiding ring. The wire laying ring is used to fix multiple stranded wires along the circumferential direction of the wire laying ring. The guiding ring is arranged at the end of the stranded wires and makes the ends of the multiple stranded wires approach each other. The anchor head fixing part further includes an adjusting component arranged between the wire laying ring and the guiding ring. The adjusting component includes: A fixing cylinder, which is arranged in the middle of the wire laying ring and has a cavity inside. A partition is arranged in the middle of the cavity, and an opening is arranged in the middle of the partition. Air holes are arranged on the end of the fixing cylinder close to the wire laying ring. A piston, which includes a plug body matching the cavity and a connecting rod arranged at the end of the plug body and passing through the opening. A stranded wire ring, which includes a ring body sleeved on the stranded wire. A connecting rod, which includes a sliding block slidably connected in the cavity of the fixing cylinder and having an end connected to the connecting rod, a strip-shaped hole arranged on the outer wall of the fixing cylinder and communicating with the cavity, a first rod body slidably connected in the strip-shaped hole and connected to the sliding block, and a second rod body with one end hinged to the first rod body and the other end hinged to the stranded wire ring. An air pipe, with one end connected to the air hole and used to convey air into the cavity to push the piston to move towards the opening.

[0009] As a further preference of the present invention, the adjusting component further includes a fixing column arranged on the end of the fixing cylinder far from the wire laying ring. A guiding component matching the stranded wire ring is arranged on the outer peripheral side of the fixing column to make the stranded wire ring move along the radial direction of the fixing column.

[0010] As a further preference of the present invention, the air pipe includes a pre-buried pipe and a main pipe. One end of the pre-buried pipe passes through the air hole and is fixed in the cavity, and the other end of the pre-buried pipe is detachably connected to the main pipe.

[0011] As a further preference of the present invention, the pre-buried pipe includes a pressure increasing section matching the air hole and an expanded diameter section matching the main pipe and connected to the pressure increasing section.

[0012] As a further preference of the present invention, a clamping ring is arranged on the outer peripheral side of the pressure increasing section located in the cavity, and the outer diameter of the clamping ring is larger than the aperture of the air hole.

[0013] As a further preference of the present invention, a first connection thread is arranged on the end of the expanded diameter section far from the pressure increasing section. The end of the main pipe has a second connection thread matching the first connection thread.

[0014] As a further preference of the present invention, the guiding assembly includes a guide rail disposed on the fixed column and a slider disposed on the stranded wire loop and slidably connected to the guide rail.

[0015] As a further preference of the present invention, a limiting plate is disposed on the end of the guide rail away from the fixed column.

[0016] As a further preference of the present invention, a groove is disposed on the surface of the plug body close to the air hole.

[0017] As a further preference of the present invention, when the connecting rod is deployed to the maximum angle, the stranded wire at the stranded wire loop is closer to the inner wall of the drilling hole than the stranded wire of the guiding loop.

[0018] The beneficial effects of the present invention are as follows: The slope anchoring structure provided by the present invention can be deployed after the anchor head fixing part reaches a predetermined depth and is tightly connected to the hole wall, thereby improving the fixing effect of the anchor head fixing part. Moreover, the structure for controlling the deployment is realized by air transportation through an air pipe, without the need for a motor to control linear motion or rotational motion, and will not cause displacement interference to the anchor head fixing part itself, which helps to improve the final pouring effect.

[0019] The slope anchoring structure provided by the present invention occupies a small space and also has room for secondary expansion, which helps the rapid filling of the slurry and helps to ensure the pouring effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Attached Figure 1 is a schematic structural view of the overall anchoring structure in the prior art of the present invention.

[0021] Attached Figure 2 is a schematic structural view of the stranded wire loop from the front view angle of the present invention.

[0022] Attached Figure 3 is a schematic structural view of the adjusting assembly of the present invention.

[0023] Attached Figure 4 is a schematic partial structural view of the adjusting assembly of the present invention.

[0024] Attached Figure 5 is a schematic partial structural view of the adjusting assembly of the present invention.

[0025] Attached Figure 6 is a schematic structural view of the connection structure of the stranded wire loop and the connecting rod from the side view angle of the present invention.

[0026] Attached Figure 7 is a schematic sectional structural view of the fixed cylinder of the present invention.

[0027] BRIEF DESCRIPTION OF THE DRAWINGS: stranded wire a, wire laying ring 11, guiding ring 12; Opening 111, central hole 112; Fixed cylinder 21, piston 22, wire winding ring 23, connecting rod 24, air pipe 25, fixed column 26, guiding assembly 27; Partition plate 211, opening 212, air hole 213; Plug body 221, connecting rod 222, groove 223; Ring body 231; Slider 241, strip hole 242, first rod body 243, second rod body 244; Embedded pipe 251, main body pipe 252; Pressurizing section 251a, diameter-expanding section 251b, snap ring 251c; Guide rail 271, slider 272, limit plate 273. Specific implementation mode

[0028] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present invention 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 therefore should not be construed as a limitation to the present invention.

[0029] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, terms such as "set" and "connect" should be understood in a broad sense. For example, "connect" 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, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] It should be pointed out that as shown in the attached Figure 1 As shown in the figure, the slope anchoring structure described in the present invention generally refers to the anchoring section of a prestressed anchor cable. The whole prestressed anchor cable should also include a free section and a tensioning section. The whole prestressed anchor cable body is composed of a grouting pipe and a (steel) wire strand connected. Isolation brackets and binding rings are arranged along the length direction of the grouting pipe and the (steel) wire strand, so as to realize the overall fixation of the grouting pipe and the (steel) wire strand. The ends of the grouting pipe and the (steel) wire strand are fixed by a guiding cap, so as to facilitate penetration into the drill hole. The grouting pipe is generally fixed through the opening at the center of the guiding bracket.

[0031] In an actual scenario, the end of the anchorage section shrinks towards the center. During construction, it is generally first tied with a binding band and then fixedly connected to the guide cap. At this time, the inner diameter of the space formed by the stranded wire surrounded between the outermost isolation bracket and the guide cap gradually decreases from the isolation bracket to the guide cap. At this time, the slurry ejected from the grouting pipe is difficult to completely fill this section of the space, ultimately affecting the grouting effect. Therefore, how to completely fill the slurry in this section of the space is an urgent problem to be solved. In the prior art, an expansion frame assembly is used to expand this space to facilitate grouting. The implementation of this structure requires a screw structure to drive the expansion assembly to unfold and the screw structure needs to be maintained until the grouting is completed. Therefore, the problems of this structure are as follows: First, it is difficult to operate outside the drill hole to rotate the anchor rod; Second, when rotating the anchor rod outside the hole, the anchor rod is prone to displacement, ultimately affecting the pouring effect of the anchor rod; Third, the screw structure itself occupies the grouting space and needs to be pulled out in time after the pouring of this section of the space is completed, otherwise it will affect the final pouring effect. However, it is difficult to accurately judge the pouring situation in the hole, so the implementation is difficult.

[0032] Based on this, the present invention proposes a slope anchoring structure for construction. The following are specific embodiments: This embodiment provides a slope anchoring structure for construction, including an anchor head fixing part. The anchor head fixing part includes a wire laying ring 11 and a guide ring 12. The wire laying ring 11 is used to fix a plurality of stranded wires a along the circumferential direction of the wire laying ring 11. The guide ring 12 is arranged at the end of the stranded wire a and makes the ends of the plurality of stranded wires a approach each other. Among them, as shown in the appendix Figure 2 The structure of the wire laying ring 11 can be directly the same as the isolation bracket in the prior art, including an opening 111 for fixing the stranded wire a and a central hole 112 for fixing the grouting pipe; the guide ring 12 is used to shrink and tie all the stranded wires a, replacing the binding band used in the actual scenario; the wire laying ring 11 and the guide ring 12 jointly fix the stranded wire a, and the stranded wire a shrinks inward, and the space between all the stranded wires a gradually decreases.

[0033] In this embodiment, the anchor head fixing part further includes an adjusting assembly arranged between the wire laying ring 11 and the guide ring 12. As shown in the appendix Figure 3 and the appendix Figure 4 and the appendix Figure 7 The adjusting assembly includes: a fixed cylinder 21, a piston 22, a stranded wire ring 23, a connecting rod 24, and an air pipe 25; The fixed cylinder 21 is arranged in the middle of the wire laying ring 11 and has a cavity inside; a partition 211 is provided in the middle of the cavity, and an opening 212 is provided in the middle of the partition 211; an air hole 213 is provided at the end of the fixed cylinder 21 close to the wire laying ring 11. Among them, "the fixed cylinder 21 is arranged in the middle of the wire laying ring 11" means that the fixed cylinder 21 is installed at the center of the wire laying ring 11; the cavity in "the fixed cylinder 21 has a cavity inside" refers to a closed cavity; the partition 211 is arranged at the cavity and divides the closed cavity into two independent cavities, and the two independent cavities are communicated through the opening 212 on the partition 211; the air hole 213 is provided at the end of the fixed cylinder 21 and is aligned with the central hole 112, so that gas can enter the cavity through the central hole 112 and the air hole 213; The piston 22 includes a plug body 221 matching the cavity, and a connecting rod 222 arranged at the end of the plug body 221 and passing through the opening 212. Among them, the piston 22 matches the inner wall of the cavity and can slide relatively in the cavity, and rubber or a material with a similar airtight function is provided on the whole or the outer peripheral wall of the piston 22 to ensure that the gas at both ends of the piston 22 hardly flows when the piston 22 moves in the cavity. Further, a groove 223 is provided on the surface of the plug body 221 close to the air hole 213, which is beneficial to increasing the effective contact area between the gas input and the plug body 221.

[0034] The stranded wire ring 23 includes a ring body 231 sleeved on the stranded wire a. The number of stranded wires a is generally 4 or 6, and the number of ring bodies 231 is also the same as the number of stranded wires a.

[0035] The connecting rod 24 includes a sliding block 241 slidably connected in the cavity of the fixed cylinder 21 and having an end connected to the connecting rod 222, a strip-shaped hole 242 provided on the outer wall of the fixed cylinder 21 and communicating with the cavity, a first rod body 243 slidably connected in the strip-shaped hole 242 and connected to the sliding block 241, and a second rod body 244 having one end hinged to the first rod body 243 and the other end hinged to the stranded wire ring 23.

[0036] One end of the air pipe 25 is connected to the air hole 213 and is used for injecting gas into the cavity to push the piston 22 to move towards the opening 212. Among them, the air pipe 25 can be directly connected to a high-pressure gas injection device used for clearing the drill hole during the construction of the slope anchor rod; preferably, the outer diameter of the end of the air pipe 25 close to the anchor head is less than the central hole 112, so that the air pipe 25 can be directly connected to the air hole 213 on the fixed cylinder 21.

[0037] The process that can be basically achieved after the installation of the stranded wire a in the above structure is as follows: during the process of entering the drill hole, the air pipe 25 is not ventilated, and the piston 22 is moved to the end near the wire laying ring 11 in the cavity. At this time, the whole connecting rod 24 is in a contracted state, and the stranded wire a between the wire laying ring 11 and the guiding ring 12 is in a gradually contracting form, making the stranded wire a easier to move in the drill hole; after reaching the set position in the drill hole, the air pipe 25 is ventilated, and the high-pressure gas acts on the piston 22 and pushes the piston 22 to move in the cavity. The piston 22 drives the sliding block 241 to move away from the wire laying ring 11, and then the whole connecting rod 24 gradually expands to the maximum position. At this time, the stranded wire ring 23 connected to the connecting rod 24 moves from the center to the distal end, expanding the stranded wire a and even making the outer diameter of the tubular structure formed by the stranded wire a larger than the outer diameter of the tubular structure at the wire laying ring 11. At this time, only by maintaining the pressure difference at the cavity where the installation piston 22 is located, the stranded wire ring 23 can drive the stranded wire a to always be in tight contact with the inner wall of the drill hole, playing a fixing role. At the same time, the space between the wire laying ring 11 and the guiding ring 12 expands, facilitating grouting and improving the pouring effect.

[0038] In some preferred embodiments, the adjusting assembly further includes a fixing column 26 provided at the end of the fixed cylinder 21 away from the wire laying ring 11, and a guiding assembly 27 is provided on the outer peripheral side of the fixing column 26 and is matched with the stranded wire ring 23 to enable the stranded wire ring 23 to move radially along the fixing column 26. The advantage of such a setting is to improve the movement stability and synchronism of all the stranded wire rings 23.

[0039] Further preferably, as shown in the appended Figure 5 and appended Figure 6 figures, the guiding assembly 27 includes a guide rail 271 provided on the fixing column 26, a slider 272 provided on the stranded wire ring 23 and slidably connected to the guide rail 271, and a limiting plate 273 is provided at the end of the guide rail 271 away from the fixing column 26.

[0040] In some preferred embodiments, as shown in the appended Figure 4 figures, the air pipe 25 includes a pre-buried pipe 251 and a main pipe 252; one end of the pre-buried pipe 251 passes through the air hole 213 and is fixed in the cavity, and the other end of the pre-buried pipe 251 is detachably connected to the main pipe 252.

[0041] Furthermore, the embedded pipe 251 includes a boost section 251a matching the air hole 213, and an expanded diameter section 251b matching the main pipe 252 and connected to the boost section 251a; the boost section 251a is provided with a retaining ring 251c on the outer peripheral side of the cavity, and the outer diameter of the retaining ring 251c is larger than the aperture of the air hole 213; the expanded diameter section 251b is provided with a first connecting thread on the end away from the boost section 251a; the end of the main pipe 252 has a second connecting thread matching the first connecting thread.

[0042] As a further preferred embodiment of the present invention, when the connecting rod 24 is unfolded to the maximum angle, the strands a at the strand ring 23 are closer to the inner wall of the borehole than the strands a at the guide ring 12 .

[0043] The present invention also provides a construction method, which specifically comprises the following steps: S1 Determine the anchor density, quantity and arrangement according to the geological characteristics of the slope support, and mark the anchor drill points; S2 connects the stranded wire a and the grouting pipe through the isolation bracket and the tying ring, and installs the stringing ring 11 at the anchor head section; S3 installs the adjustment assembly. In the non-ventilated stage, the connecting rod 24 is retracted, and the strands a are passed through the strand rings 23 respectively, and then the strands a are tied at the front end through the guide ring 12, and finally the guide cap is connected at the end; S4: Send the installed structure into the borehole and reach the predetermined position, connect the air pipe 25 to the external high-pressure gas equipment, and send gas into the air pipe 25, observe the air pressure at the equipment, and ensure that the air pressure remains stable (at this time, the connecting rod 24 is unfolded, the strand a is stretched and abuts against the inner wall of the borehole); S5 injects concrete into the borehole, then shuts down the equipment, pulls out the air pipe 25, and then continues grouting until the construction requirements are met.

[0044] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A slope anchoring structure for construction, comprising an anchor head fixing portion, the anchor head fixing portion comprising a wire rack (11) and a guide ring (12), the wire rack (11) being used to fix a plurality of strands (a) along the circumference of the wire rack (11), the guide ring (12) being arranged at the ends of the strands (a) and bringing the ends of the plurality of strands (a) closer to each other; characterized in that: The anchor head fixing portion further comprises an adjustment component arranged between the stringing ring (11) and the guide ring (12), the adjustment component comprising: A fixing tube (21), the fixing tube (21) being arranged in the middle of the stringing ring (11) and having a cavity inside the fixing tube (21); a partition (211) being arranged in the middle of the cavity, and an opening (212) being arranged in the middle of the partition (211); and an air hole (213) being arranged at the end of the fixing tube (21) close to the stringing ring (11); A piston (22), the piston (22) comprising a plug body (221) matching the cavity, and a connecting rod (222) arranged at an end of the plug body (221) and passing through the opening (212); A twisted wire ring (23), the twisted wire ring (23) comprising a ring body (231) sleeved on the twisted wire (a); a connecting rod (24), the connecting rod (24) comprising a sliding block (241) slidably connected in a cavity of the fixed cylinder (21) and having an end connected to the connecting rod (222), a strip hole (242) provided on an outer wall of the fixed cylinder (21) and communicating with the cavity, a first rod body (243) slidably connected in the strip hole (242) and connected to the sliding block (241), and a second rod body (244) having one end hinged to the first rod body (243) and the other end hinged to the twisted wire ring (23); An air pipe (25) has an end connected to the air hole (213) and is used to supply air into the cavity so as to push the piston (22) to move toward the opening (212).

2. A slope anchoring structure for construction according to claim 1, characterized in that: The adjustment assembly further comprises a fixing column (26) arranged on the end of the fixing cylinder (21) away from the stringing ring (11), and a guide component (27) matching with the twisting wire ring (23) is arranged on the outer peripheral side of the fixing column (26) to enable the twisting wire ring (23) to move radially along the fixing column (26).

3. A slope anchoring structure for construction according to claim 1, characterized in that: The air pipe (25) comprises a pre-buried pipe (251) and a main pipe (252); one end of the pre-buried pipe (251) passes through the air hole (213) and is fixed in the cavity, and the other end of the pre-buried pipe (251) is detachably connected to the main pipe (252).

4. A slope anchoring structure for construction according to claim 3, characterized in that: The embedded pipe (251) comprises a pressurizing section (251a) matching the air hole (213), and an expanded diameter section (251b) matching the main pipe (252) and connected to the pressurizing section (251a).

5. A slope anchoring structure for construction according to claim 4, characterized in that: A clamping ring (251c) is provided on the outer peripheral side of the pressurizing section (251a) located in the cavity, and the outer diameter of the clamping ring (251c) is larger than the aperture of the air hole (213).

6. A slope anchoring structure for construction according to claim 4, characterized in that: A first connecting thread is provided on the end of the diameter-expanding section (251b) away from the pressurizing section (251a); and a second connecting thread matching the first connecting thread is provided at the end of the main body tube (252).

7. A slope anchoring structure for construction according to claim 2, characterized in that: The guide assembly (27) comprises a guide rail (271) arranged on the fixed column (26), and a sliding block (272) arranged on the twisted wire ring (23) and slidably connected to the guide rail (271).

8. A slope anchoring structure for construction according to claim 7, characterized in that: A limiting plate (273) is provided on the end of the guide rail (271) away from the fixing column (26).

9. A slope anchoring structure for construction according to claim 1, characterized in that: A groove (223) is provided on the surface of the plug body (221) close to the air hole (213).

10. A slope anchoring structure for construction according to claim 1, characterized in that: When the connecting rod (24) is unfolded to the maximum angle, the strands (a) at the strand ring (23) are closer to the inner wall of the borehole than the strands (a) at the guide ring (12).

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