Anchor cable and construction method thereof

Abstract

The present application relates to a cable anchor and a construction method thereof, belonging to the field of civil engineering technology. It includes a cable anchor body and a grouting pipe. An anchoring hole is formed in a slope. The cable anchor body and the grouting pipe are both partially arranged in the anchoring hole. An installation part is arranged at the end of the cable anchor body. A sleeve is arranged at the center of the cable anchor body. The sleeve is arranged above the installation part. The sleeve forms a cavity required for gas injection. The sleeve is connected to a gas source. The cavity is communicated with the installation part. A fixing part is further arranged at the end of the installation part. The fixing part is adapted to be driven by the gas injected into the sleeve to expand and fit tightly in the anchoring hole. The present application has the effect that by injecting gas into the cavity formed by the sleeve, a driving force can be provided for the fixing part, so as to ensure that the fixing part fits tightly in the anchoring hole after expansion, ensure the stability of the cable anchor when the grouting pipe is pulled out, and avoid loosening and skewing of the cable anchor when it is pulled out.

Description

Technical Field

[0001] This application relates to the field of civil construction technology, and in particular, to a cable anchor and a construction method thereof. Background Art

[0002] In sections with complex general geological conditions, "prestressed cable anchors + lattice beams" are mostly used for the support of high slopes to ensure the stability of the roadbed high slopes.

[0003] Currently, a cable anchor and a grouting pipe arranged at intervals with the cable anchor are provided inside the cable anchor hole. When constructing the prestressed cable anchor, it is necessary to inject high-pressure air to clean the anchoring hole, and then grout the anchoring hole. During the grouting process, it is necessary to gradually extract the grouting pipe.

[0004] Regarding the above related technology, the inventor believes that during the process of extracting the grouting pipe, the cable anchor may be dragged to move simultaneously, thereby affecting the stability of the cable anchor during the grouting process. Summary of the Invention

[0005] In order to solve the defect of insufficient stability of the cable anchor during the grouting process mentioned above, this application provides a cable anchor.

[0006] In a first aspect, this application provides a cable anchor, adopting the following technical solution:

[0007] A cable anchor includes a cable anchor body and a grouting pipe. An anchoring hole is formed in a slope. Both the cable anchor body and the grouting pipe are partially arranged in the anchoring hole. An installation part is arranged at the end of the cable anchor body. A sleeve is arranged at the center of the cable anchor body. The sleeve is arranged above the installation part. The sleeve forms a cavity required for air injection. The sleeve is connected to a gas source. The cavity is communicated with the installation part. A fixing part is further arranged at the end of the installation part. The fixing part is adapted to be driven by the gas injected into the sleeve to expand and fit tightly in the anchoring hole.

[0008] By adopting the above technical solution, by injecting gas into the cavity formed by the sleeve, a driving force can be provided for the fixing part, so as to ensure that the fixing part fits tightly in the anchoring hole after expansion, ensuring the stability of the cable anchor when the grouting pipe is pulled out, and avoiding loosening and skew of the cable anchor when pulled out.

[0009] Optionally, the fixing part includes:

[0010] A sliding block, slidably arranged at the bottom end of the sleeve. A push rod is arranged at the end of the sliding block away from the sleeve. A fixing block is arranged on the push rod;

[0011] Two groups of deformation rods, symmetrically arranged at both ends of the push rod at one end and having free ends at the other end. A connecting column is slidably arranged on the deformation rods;

[0012] The first adjusting rod is hinged to the fixed block at one end and hinged to the connecting column at the other end;

[0013] The second adjusting rod is hinged to the connecting column at one end and hinged to the bottom of the mounting part at the other end.

[0014] By adopting the above technical solution, air is injected into the sleeve, so that the sliding block slides in the sleeve, thereby pushing the rod to push the first adjusting rod to bend the deformation rod towards the anchoring hole side, making the installation of the anchor cable in the anchoring hole more stable. And when the grouting pipe is pulled out, since the deformation rod bends to fit tightly with the soil, the pulling out of the grouting pipe will not affect the subsequent construction.

[0015] Optionally, a chute is provided on the deformation rod, the connecting column is slidably arranged in the chute, and a recess is arranged in the chute. The connecting column is fixed when it slides to the recess.

[0016] By adopting the above technical solution, the connecting column is fixed after sliding to the recess, so as to ensure that the deformation rod always maintains a stable and fixed state.

[0017] Optionally, a support part is arranged in the mounting part. The support part is circumferentially arranged around the sleeve. The support part is hollow, and the inside of the support part is connected to the inside of the sleeve. The support part has an expanded state and a contracted state. When air is injected into the sleeve, the support part has an expanded working state, and when no air is injected into the sleeve, it has a contracted state.

[0018] By adopting the above technical solution, by injecting air into the inside of the support part, the support part expands. At this time, the support part abuts against the outer side of the anchoring hole to ensure the stability of the mounting part.

[0019] Optionally, a spring is arranged at one end of the sliding block away from the pushing rod. A blocking block is fixedly connected above the spring. The blocking block is suitable for blocking the connection hole between the support part and the sleeve to ensure the expanded state of the support part.

[0020] By adopting the above technical solution, after the support part is filled with air, the air source stops injecting air. At this time, the spring rebounds, and the blocking block blocks the connection hole between the support part and the sleeve, so as to ensure that the support part always remains in an expanded state.

[0021] Optionally, a plurality of adjusting parts are arranged in the circumferential direction of the mounting part. The adjusting parts have a first state when the gas in the sleeve is full and a second state when the gas injection in the sleeve stops.

[0022] By adopting the above technical solution, when the gas in the sleeve is full, the adjusting part discharges the gas into the anchoring hole to divert the gas.

[0023] Optionally, the adjusting part includes a housing, and an air inlet communicating with the sleeve and an air outlet communicating with the anchoring hole are arranged on the housing;

[0024] A first sliding rod is slidably arranged inside the housing, and a telescopic rod is arranged on one side of the first sliding rod away from the air inlet.

[0025] A second sliding rod is slidably arranged on one side close to the telescopic rod. The second sliding rod is connected to the first sliding rod. When the first sliding rod slides and does not block the air inlet, the second sliding rod is used to slide along with the first sliding rod to open the air outlet. When the first sliding rod is in the original position, the second sliding rod is used to block the air outlet.

[0026] By adopting the above technical solution, gas enters from the air inlet. At this time, the first sliding rod and the second sliding rod slide, so that the air outlet is opened, and the gas is discharged from the air outlet into the anchoring hole to wash the inner wall of the anchoring hole, and the function of simultaneously cleaning the anchoring hole can be realized.

[0027] Optionally, at least one fixing plate is arranged on the anchor cable body, the grouting pipe and the sleeve.

[0028] By adopting the above technical solution, the fixing plate connects the anchor cable, the grouting pipe and the sleeve together to ensure the stable connection of each part.

[0029] In a second aspect, the present application provides a method for constructing an anchor cable. Based on the above-mentioned anchor cable, the method includes the following steps: S1. Drill a hole at a preset position in the soil layer to form an anchoring hole, and ream and clean the formed hole. At the same time, fabricate the anchor cable, install a fitting at the end of the anchor cable, and then install a fixing plate on the anchor cable and the grouting pipe to facilitate the simultaneous movement of the anchor cable and the grouting pipe; S2. Move the anchor cable to drive the fitting and the grouting pipe to move simultaneously, so that part of the anchor cable and the grouting pipe moves into the anchoring hole; S3. Slowly rotate the grouting pipe so that the end of the grouting pipe disengages from the fitting; S4. Inject grout into the anchor cable hole through the grouting pipe, and rotate and lift the grouting pipe during grouting.

[0030] In summary, the present application includes at least one of the following beneficial technical effects:

[0031] 1. By injecting gas into the cavity formed by the sleeve, a driving force can be provided for the fixing member, so as to ensure that the fixing member tightly fits in the anchoring hole after being expanded, ensuring the stability of the anchor cable when the grouting pipe is pulled out and avoiding loosening and skewing of the anchor cable when pulled out;

[0032] 2. Gas enters from the air inlet. At this time, the first sliding rod and the second sliding rod slide, so that the air outlet is opened, and the gas is discharged from the air outlet into the anchoring hole to wash the inner wall of the anchoring hole, and the function of simultaneously cleaning the anchoring hole can be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic structural diagram of an embodiment of the present application;

[0034] Figure 2 is a sectional view of the anchor cable in this application;

[0035] Figure 3 is Figure 2 a schematic structural diagram of the adjusting member in

[0036] Explanation of reference numerals: 1, grouting pipe; 2, anchoring hole; 3, mounting member; 31, supporting portion; 32, plug; 33, sliding block; 34, push rod; 35, second adjusting rod; 36, first adjusting rod; 37, deformation rod; 38, spring; 4, sleeve; 5, fixing plate; 6, adjusting member; 61, air inlet; 62, first push rod; 63, telescopic rod; 64, housing; 65, air outlet; 66, second push rod. Detailed implementation manners

[0037] The following further describes this application in detail with reference to the attached Figures 1-3 drawings.

[0038] An embodiment of this application discloses a name. Referring to Figures 1-2 , the name includes an anchor cable body and a grouting pipe. An anchoring hole is formed in a slope. Both the anchor cable body and the grouting pipe are partially disposed in the anchoring hole. The anchor cable body is composed of a plurality of steel strands. An end portion of the anchor cable body is provided with a mounting member, and the mounting member is cylindrical. The sleeve is disposed above the mounting member and is located at the central position. The sleeve is connected to a gas source, and the gas source can be a gas supply device such as an air pump. The sleeve serves as a gas supply pipeline, and the sleeve injects gas into the mounting member. A fixing member is further disposed at an end portion of the mounting member. After the gas is injected, the fixing member is expanded and fitted in the anchoring hole, ensuring that the fixing member is adapted to be driven by the gas injected into the sleeve to expand and fit in the anchoring hole, so as to ensure that the fixing member tightly fits in the anchoring hole after being expanded, ensuring the stability of the anchor cable when the grouting pipe is pulled out and avoiding loosening and skew of the anchor cable when it is pulled out.

[0039] Wherein, the anchor cable body, the sleeve and the grouting pipe are connected by at least one fixing plate to ensure stable connection and avoid skew of one of the components.

[0040] Refer to Figures 1-2, the fixing member includes a sliding block 33, two groups of deformation rods 37, a first adjusting rod 36 and a second adjusting rod 35. Among them, the sliding block 33 is slidably arranged at the bottom end of the sleeve 4, and a push rod 34 is fixedly arranged below the sliding block 33. When the sleeve 4 is inflated, the sliding block 33 slides, driving the push rod 34 to move downward. A fixing block is arranged on the push rod 34, and the fixing block moves downward together with the push rod 34. Deformation rods 37 are symmetrically arranged on both sides of the push rod 34. The material of the deformation rods 37 is a material with certain elasticity, ensuring that the deformation rods 37 can be bent without breaking. The first adjusting rod 36 and the second adjusting rod 35 are both hinged to a connecting column sliding on the deformation rod 37. The other end of the first adjusting rod 36 is hinged to the fixing block, and the second adjusting rod 35 is hinged to the bottom of the mounting member 3. When the push rod 34 is pushed, the place where the first adjusting rod 36 is connected to the deformation rod 37 slides upward, driving the first adjusting rod 36 to be horizontal. At this time, the deformation rod 37 is bent towards the side close to the anchoring hole 2 due to the force of the first adjusting rod 36, making the anchor cable more stable in the anchoring hole 2. And when the grouting pipe 1 is pulled out, since the deformation rod is bent to be closely attached to the soil, the pulling out of the grouting pipe 1 will not affect the subsequent construction.

[0041] Reference Figures 1-2 , at least two supporting parts 31 surrounding the sleeve 4 are arranged in the mounting member 3. The supporting parts 31 are hollow and can be inflated. By inflating, the supporting parts 31 expand. When the gas is injected, the supporting parts 31 are in an expanded state. When no gas is injected, the supporting parts 31 are in a contracted state. After the gas is injected, the plug 32 slides to a position where the connection hole between the supporting part 31 and the sleeve 4 is not blocked. At this time, the spring 38 at the bottom of the sliding block 33 is compressed. After the supporting parts 31 are filled with gas, the gas source stops injecting gas. At this time, the spring 38 rebounds, and the plug 32 blocks the connection hole between the supporting part 31 and the sleeve 4, thus ensuring that the supporting parts 31 are always in an expanded state.

[0042] Reference Figures 2-3 , a number of adjusting members 6 are arranged in the circumferential direction of the mounting member 3. The adjusting members 6 have a first state when the gas in the sleeve 4 is full and a second state when the gas injection in the sleeve 4 stops.

[0043] Among them, the adjusting member 6 is disposed within the mounting member 3. An air inlet 61 communicating with the sleeve 4 and an air outlet 65 communicating with the anchoring hole 2 are provided on the housing 64. The first sliding rod is slidably disposed within the housing 64. After the first sliding rod slides to the right, a first cavity is formed. A telescopic rod 63 is provided on the right side of the first sliding rod. The second sliding rod is disposed on the right side of the first sliding rod. The second sliding rod is connected to the first sliding rod, and the second sliding rod and the first sliding rod form a second cavity. The initial position of the first sliding rod is the position where the air inlet 61 is blocked. The initial position of the second sliding rod is the position where the air outlet 65 is blocked. When the first sliding rod slides to the right under the action of the telescopic rod 63, the second sliding rod also slides to the right. When the first sliding rod slides and does not block the air inlet 61, the second sliding rod follows the first sliding rod to slide and opens the air outlet 65. Gas enters from the air inlet 61, passes through the first cavity and the second cavity, and the gas is discharged from the air outlet 65 into the anchoring hole 2 to wash the inner wall of the anchoring hole 2, so as to achieve the effect of simultaneously cleaning the anchoring hole 2.

[0044] The implementation principle of the name of an embodiment of this application is as follows: When injecting gas into the sleeve 4, the plug 32 slides downward, so that gas enters the support portion 31, and the support portion 31 expands, thus abutting against the side wall of the anchoring hole 2. At this time, due to the downward sliding of the plug 32 and the pressure of the gas, the sliding block 33 drives the push rod 34 to slide downward. At this time, the push rod 34 pushes the first adjusting rod 36 to bend the deformation rod 37 toward the anchoring hole 2, so that the anchor cable is more stable in the anchoring hole 2. After injecting gas for a period of time, gas enters from the air inlet 61. At this time, the first sliding rod and the second sliding rod slide, so that the air outlet 65 is opened, and the gas is discharged from the air outlet 65 into the anchoring hole 2 to wash the inner wall of the anchoring hole 2, so as to achieve the effect of simultaneously cleaning the anchoring hole 2.

[0045] Embodiment 2

[0046] This embodiment discloses a method for constructing an anchor cable, which includes the following steps:

[0047] S1. Drill a hole at a preset position in the soil layer to form an anchoring hole 2, and perform hole cleaning and sweeping on the formed hole. At the same time, fabricate an anchor cable, install a mounting member 3 at the end of the anchor cable, and then install a fixing disk 5 on the anchor cable and the grouting pipe 1 to facilitate the simultaneous movement of the anchor cable and the grouting pipe 1;

[0048] S2. Move the anchor cable to drive the mounting member 3 and the grouting pipe 1 to move simultaneously, so that part of the anchor cable and the grouting pipe 1 move into the anchoring hole 2;

[0049] S3. Slowly rotate the grouting pipe 1 so that the end of the grouting pipe 1 is separated from the mounting member 3;

[0050] S4. Inject grout into the anchor cable hole through the grouting pipe 1, and rotate and lift the grouting pipe 1 during grouting.

[0051] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A cable bolt, comprising a cable bolt body and a grouting pipe (1). An anchoring hole (2) is formed in a slope. The cable bolt body and the grouting pipe (1) are both partially arranged in the anchoring hole (2). It is characterized in that: An installation part (3) is arranged at the end of the cable bolt body. A sleeve (4) is arranged at the center of the cable bolt body. The sleeve (4) is arranged above the installation part (3). The sleeve (4) forms a cavity required for gas injection. The sleeve (4) is connected to a gas source. The cavity is communicated with the installation part (3). A fixing part is further arranged at the end of the installation part (3). The fixing part is adapted to be driven by the gas injected into the sleeve (4) to expand and fit in the anchoring hole (2); The fixing part includes: A sliding block (33), which is slidably arranged at the bottom end of the sleeve (4). A push rod (34) is arranged at one end of the sliding block (33) away from the sleeve (4). A fixing block is arranged on the push rod (34); Two groups of deformation rods (37), one end of which is symmetrically arranged at both ends of the push rod (34), and the other end is a free end. A connecting column is slidably arranged on the deformation rod (37); A first adjusting rod (36), one end of which is hinged to the fixing block, and the other end is hinged to the connecting column; A second adjusting rod (35), one end of which is hinged to the connecting column, and the other end is hinged to the bottom of the installation part (3).

2. The cable anchor according to claim 1, characterized in that: A chute is arranged on the deformation rod (37). The connecting column is slidably arranged in the chute. A concave part is arranged in the chute. The connecting column is fixed when it slides to the concave part.

3. The cable anchor according to claim 2, wherein: A supporting part (31) is arranged in the installation part (3). The supporting part (31) is circumferentially arranged around the sleeve (4). The supporting part (31) is hollow. The inside of the supporting part (31) is communicated with the inside of the sleeve (4). The supporting part (31) has an expanded state and a contracted state. When gas is injected into the sleeve (4), the supporting part (31) has an expanded state. When no gas is injected into the sleeve (4), it has a contracted state.

4. The cable anchor according to claim 3, characterized in that, A spring (38) is arranged at one end of the sliding block (33) away from the push rod (34). A blocking block (32) is fixedly connected above the spring (38). The blocking block (32) is adapted to block the connection hole between the supporting part (31) and the sleeve (4).

5. The cable anchor according to claim 4, characterized in that: A plurality of adjusting parts (6) are arranged in the circumferential direction of the installation part (3). The adjusting part (6) has a first state when the gas in the sleeve (4) is full and a second state when the gas injection in the sleeve (4) stops.

6. The cable anchor according to claim 5, characterized in that, The adjusting part (6) includes: A housing (64). An air inlet (61) communicated with the sleeve (4) and an air outlet (65) communicated with the anchoring hole (2) are arranged on the housing (64); A first sliding rod, which is slidably arranged in the housing (64). A telescopic rod (63) is arranged on one side of the first sliding rod away from the air inlet (61); The second sliding rod is slidably arranged on one side close to the telescopic rod (63). The second sliding rod is connected to the first sliding rod. When the first sliding rod slides and does not block the air inlet (61), the second sliding rod follows the first sliding rod to slide and open the air outlet (65). When the first sliding rod is in the original position, the second sliding rod is used to block the air outlet (65).

7. The cable anchor according to any one of claims 1-6, characterized in that: At least one fixing plate (5) is arranged on the anchor cable body, the grouting pipe (1) and the sleeve (4).

8. A construction method for a cable bolt, based on the cable bolt according to any one of claims 1-7, characterized in that: It includes the following steps: S1. Drill a hole at a preset position in the soil layer to form an anchor hole (2), and ream and clean the formed hole. At the same time, fabricate the anchor cable, install the installation part (3) at the end of the anchor cable, and then install the fixing plate (5) on the anchor cable and the grouting pipe (1) to facilitate the simultaneous movement of the anchor cable and the grouting pipe (1); S2. Move the anchor cable to drive the installation part (3) and the grouting pipe (1) to move simultaneously, so that part of the anchor cable and the grouting pipe (1) moves into the anchor hole (2); S3. Slowly rotate the grouting pipe (1) so that the end of the grouting pipe (1) disengages from the installation part (3); S4. Inject grout into the anchor cable hole through the grouting pipe (1), and rotate and lift the grouting pipe (1) during grouting.

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