Slope anchor cable supporting device and method

Abstract

The invention provides a slope anchor cable supporting device and method.The slope anchor cable supporting device comprises a cross-shaped connecting piece and a connecting beam connected to the cross-shaped connecting piece, the cross-shaped connecting piece comprises a middle square plate and connecting plates connected to the four edges of the middle square plate respectively, through holes are formed in the connecting plates, and through holes are formed in the middle square plate; a middle hole is formed in the middle square plate, and an anchor cable is arranged in the middle hole in a penetrating mode. Mounting holes are formed in the two ends of each connecting beam, the connecting beams are connected between the opposite connecting plates of the adjacent cross connecting pieces, and the corresponding through holes and mounting holes are aligned and fixed through bolts and nuts; a steel sleeve is arranged on the side face, away from the slope, of the middle square plate in a cushioned mode, a base plate with a through hole is arranged on the upper portion of the steel sleeve in a cushioned mode, and the anchor cable sequentially penetrates through the steel sleeve and the base plate and is tensioned through an anchor cable tensioning tool penetrating through the anchor cable. The device can be temporarily supported on the side slope, supporting is rapid and stable, dismounting is convenient, and reutilization can be achieved.

Description

Technical Field

[0001] The present invention relates to the field of support technology, and more specifically, to a slope anchor cable support device and method. Background Art

[0002] In slope support and foundation pit support projects, a support method combining anchor cables and reinforced concrete lattice beams is often used. In existing technologies, anchor cables and lattice beams are often connected in an integrated manner. This makes dismantling difficult after construction and the components difficult to recycle, resulting in material waste. Furthermore, the lattice beams are not precisely positioned, and their fit with the slope is not tight, making construction quality difficult to guarantee. Summary of the Invention

[0003] In view of the above problems, the purpose of the present invention is to provide a slope anchor cable support device and method for temporary support on the slope, which is fast and stable, easy to disassemble, and reusable.

[0004] The present invention provides a slope anchor cable support device, comprising a cross connector and a connecting beam connected to the cross connector, wherein:

[0005] The cross connector includes a middle square plate and connecting plates respectively connected to the four edges of the middle square plate. Through holes are evenly arranged on the edges of the connecting plates away from the middle square plate. A middle hole is arranged in the middle of the middle square plate. An anchor cable pre-buried on the slope to be supported is passed through the middle hole.

[0006] Both ends of the connecting beam are provided with mounting holes corresponding to the through holes one by one. The connecting beam is connected between the connecting plates facing each other of the adjacent cross connectors. The corresponding through holes and mounting holes are aligned and fixed by bolts and nuts.

[0007] A steel sleeve is provided on the side of the middle square plate away from the slope, and a pad with perforations is provided on the upper part of the steel sleeve. The anchor cable passes through the steel sleeve and the pad in sequence and is tightened by an anchor cable tensioning tool passing through the anchor cable.

[0008] Long strip side plates are connected along both side edges of the connecting plate, and the side plates are perpendicular to the connecting plate.

[0009] The connecting beam is a channel steel, the inner width of the channel steel is equal to the distance between the outer sides of the two side plates, and the end of the channel steel is fitted on the outside of the connecting plate.

[0010] The through holes are arranged in two rows, and each row has three through holes.

[0011] The inner diameter of the middle hole is 1 cm to 2 cm larger than the outer diameter of the anchor cable.

[0012] The inner diameter of the steel sleeve is not less than the inner diameter of the center hole.

[0013] The pad is square, and the inner diameter of the through hole is no larger than the outer diameter of the anchor cable tensioning tool.

[0014] The anchor cable tensioning tool is a porous anchor, and each steel strand of the anchor cable passes through the holes of the anchor ring of the porous anchor respectively. The clip assembly of the anchor cable tensioning tool cooperates with the holes of the anchor ring to tighten the steel strand.

[0015] Stiffening plates are connected between adjacent connecting plates.

[0016] Another aspect of the present invention provides a slope anchor cable support method, which uses the above-mentioned slope anchor cable support device to support the slope, comprising the following steps:

[0017] S1: Flatten the slope to be supported, measure and lay out the lines, and determine the positions of all anchor cables to be embedded and all connecting beams to be installed;

[0018] S2: Drilling anchor holes at the locations of the anchor cables to be embedded, inserting the anchor cables into the anchor holes, and injecting cement-based grouting material to fix the anchor cables to the slope;

[0019] S3: The cross connector is sleeved on the anchor cable, and the connecting beam is connected between the connecting plates of adjacent cross connectors by means of the bolts and nuts, and the cross connecting plates and the connecting beam are both placed on the slope;

[0020] S4: sequentially sleeve the steel sleeve and the pad on the anchor cable, and after tensioning, tighten the anchor cable using the anchor cable tensioning tool, with the steel sleeve and the pad placed between the anchor cable tensioning tool and the cross connector, so that all cross connectors and all connecting beams are tightly attached to the slope to form a support structure;

[0021] S5: After the support is completed, the anchor cable is cut along the pad, and the connection between the cross connector and the connecting beam is disconnected.

[0022] As can be seen from the above description, the slope anchor cable support device and method provided by the present invention is to set a cross connector on the anchor cable pre-buried on the slope, and the four connecting plates of the cross connector can connect the upper, lower, left and right connecting beams. The anchor cable is tightened by the anchor cable tensioning tool. A steel sleeve and a pad are placed between the cross connector and the anchor cable tensioning tool. The cross connector and the connecting beam are tightly attached to the slope to form a support structure. After the support is completed, the anchor cable at the pad is cut off, and the cross connector and the connecting beam can be removed and reused. The present invention is easy to install, has accurate construction positioning, is tightly combined with the slope, provides flat and stable support, is labor-saving to disassemble, and can be reused, thereby improving the construction efficiency and quality of the anchor cable lattice beam support structure.

[0023] To achieve the above and related ends, one or more aspects of the present invention include features that will be described in detail below and particularly pointed out in the claims. The following description and the accompanying drawings set forth certain exemplary aspects of the present invention in detail. However, these aspects are merely indicative of the various ways in which the principles of the present invention may be employed. Furthermore, the present invention is intended to include all such aspects and their equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] By referring to the following description in conjunction with the accompanying drawings, and with a more complete understanding of the present invention, other objects and results of the present invention will become more apparent and easier to understand. In the accompanying drawings:

[0025] Figure 1 Schematic diagram of the structure of a slope anchor cable supporting device according to embodiment 1 of the present invention;

[0026] Figure 2 This is an exploded side view of a slope anchor cable supporting device according to Example 1 of the present invention;

[0027] Figure 3 A top view of a slope anchor cable supporting device according to embodiment 1 of the present invention;

[0028] Figure 4 Flowchart of a slope anchor cable supporting method according to Example 2 of the present invention;

[0029] Among them, 1-cross connector, 11-middle square plate, 12-connecting plate, 121-side plate, 13-through hole, 14-middle hole, 15-stiffener, 2-connecting beam, 3-steel sleeve, 4-pad, 5-anchor tensioning tool, 51-anchor ring, 52-clip assembly, 6-bolt, 7-anchor cable, 8-anchor cable hole, 9-slope;

[0030] The same reference numerals throughout the drawings indicate similar or corresponding features or functions. DETAILED DESCRIPTION

[0031] In the following description, for illustrative purposes, numerous specific details are set forth to provide a comprehensive understanding of one or more embodiments. However, it will be apparent that the embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form to facilitate description of one or more embodiments.

[0032] The present invention is susceptible to various modifications and embodiments, and specific embodiments are illustrated and described with reference to the accompanying drawings. However, the present invention is not limited to these specific embodiments and encompasses all modifications, equivalents, and alternatives falling within the spirit and technical scope of the present invention, and should be understood to be encompassed thereby.

[0033] Ordinal terms such as first and second may be used to describe various components, but the components are not limited to these terms. These terms are used only to distinguish one component from another. For example, the second component may be named the first component, and similarly, the first component may be named the second component without departing from the scope of the claims of the present invention. Terms and / or terms include a combination of multiple related items or a specific item from multiple related items.

[0034] It should be understood that when a component is referred to as being "connected" or "in contact with" another component, this includes not only being directly connected or in contact with the other component, but also being understood to include being interposed with other components. Conversely, when a component is referred to as being "directly connected" or "directly in contact with" another component, it should be understood that there are no interposed components.

[0035] In the description of the embodiments, when a component is described as being formed "on or under" another component, "on or under" includes both components being in direct contact with each other or at least one other component being disposed between the two components. Furthermore, when "on" or "under" is used as a reference, it refers not only to the upper direction but also to the lower direction.

[0036] The terms used in this application are only used to illustrate specific embodiments and are not intended to limit the present invention. Unless the context clearly dictates otherwise, expressions in the singular include expressions in the plural. In this application, it should be understood that terms such as "including" or "having" are used to specify the presence of features, numbers, steps, operations, constituent elements, parts, or combinations thereof described in the specification, and do not preclude the presence or additional possibility of one or more other features, numbers, steps, operations, constituent elements, parts, or combinations thereof.

[0037] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meanings as those generally understood by those skilled in the art. Terms defined in commonly used dictionaries should be interpreted as having the same meanings as those in the context of the relevant technology and should not be interpreted as having ideal or overly formal meanings unless they are clearly defined in this application.

[0038] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0039] Example 1

[0040] like Figure 1-Figure 3As shown in the figure, the slope anchor cable support device proposed in this embodiment can be used for slope support, and can also be used for temporary support of soil bodies such as foundation pits and underground cavern excavations.

[0041] This slope anchor support device includes a cross connector 1 and a connecting beam 2 connected to the cross connector 1. The cross connector 1 is used to be mounted at the connection between the anchor cable 7 and the slope 9. Many cross connectors 1 are arranged in rows on the slope 9. The cross connector 1 can be connected to the connecting beam 2 up, down, left and right. Several connecting beams 2 are connected by the cross connector 1 to form a grid-like lattice support structure.

[0042] To facilitate connection with the connecting beam 2, the cross connector 1 may include a central square plate 11 and connecting plates 12 connected to the four edges of the central square plate 11. Through holes 13 are evenly distributed on the edges of the connecting plates 12 away from the central square plate 11, and a central hole 14 is provided in the center of the central square plate 11. The anchor cables 7 embedded in the slope 9 to be supported are passed through the central hole 14. The square plate can be a steel plate with a thickness of approximately 5 mm. The square plate is square, and the side length is determined by the width of the connecting beam 2. The thickness of the connecting plate 12 can be the same as the thickness of the square plate, and the width of the connecting plate 12 is the same as the side length of the square plate. The length of the connecting plate 12 can be convenient for connecting to the connecting beam 2. The central hole 14 of the connecting plate 12 should be convenient for passing the anchor cables 7 and have a certain distance from the outer periphery of the anchor cables 7. The cross connector 1, with a flat surface on one side, can fit closely against the slope 9 and provide a secure support after connection to the connecting beam 2.

[0043] In order to facilitate connection, mounting holes corresponding to the through holes 13 on the connecting plates 12 of the cross connectors 1 are provided at both ends of the connecting beam 2. After all the cross connectors 1 are mounted on the anchor cables, the cross connectors 1 are aligned, and each connecting plate 12 of the cross connector 1 is respectively opposite to the connecting plate 12 of the adjacent cross connector 1, so as to connect the connecting beam 2. The connecting beam 2 is connected between the opposite connecting plates 12 of the adjacent cross connectors 1, and the corresponding through holes 13 and mounting holes are aligned and fixed by bolts 6 and nuts. The connecting beams 2 are all connected through the transition of the cross connector 1 to form a grid-like lattice frame support structure, which is convenient for later dismantling and reuse, avoiding the problem in the prior art that the connecting beam 2 is a whole pipe directly penetrated by the anchor cable 7, which is inconvenient to dismantle later and wastes materials. Compared with the cast-in-place reinforced concrete support, the slope anchor cable support device adopts an assembly method, which greatly saves the workload of on-site wet operations, shortens the construction period, reduces labor costs and material consumption, and thus significantly saves the project cost.

[0044] In order to stabilize the tensioning of the anchor cable 7, a steel sleeve 3 is provided on the side of the center hole 14 away from the slope 9, and a pad 4 with perforations is provided on the upper part of the steel sleeve 3. The anchor cable 7 passes through the steel sleeve 3 and the pad 4 in sequence and is tightened by the anchor cable tensioning tool 5 that passes through the anchor cable 7. A cross connector 1 is sleeved on the anchor cable 7. After the connecting beam 2 is connected, the connecting beam 2 and the cross connector 1 are placed on the slope 9 to tension the anchor cable 7. Then, by tightening the anchor cable tensioning tool 5, the anchor cable 7 can be straightened and tightened to clamp the cross connector 1, the steel sleeve 3, and the pad 4 against the slope 9. The steel sleeve 3 and the pad 4 can stably transmit the tensioning force. The anchor cable tensioning tool 5 ensures the effective transmission and long-term locking of the anchor cable tensioning force, thereby improving the overall stress-bearing performance of the support structure and extending the service life of the support structure.

[0045] This embodiment is applicable to the support of slopes of any slope.

[0046] In a specific embodiment of the present invention, in order to ensure the stable connection of the cross connector 1, long strips of side plates 121 are connected along the edges of both sides of the connecting plate 12, and the side plates 121 are perpendicular to the connecting plate 12. The side of the cross connector 1 facing the slope 9 is a plane, and the side away from the slope 9 has a side plate 121. The side plate 121 can strengthen the stability of the connecting plate 12 of the cross connector 1 so that it will not deform during long-term use. The middle square plate 11 of the cross connector 1 can be a square steel plate, and the connecting plate 12 can be a channel steel. The inner width of the channel steel is the same as the side length of the middle square plate 11, and the thickness of the channel steel is the same as the thickness of the middle square plate 11. The middle square plate 11 and the four channel steels are welded together to form the cross connector 1. The side plates of the channel steel are the side plates 121 of the connecting plate 12, and the structure is stable and firm.

[0047] In a specific embodiment of the present invention, to ensure a stable connection with the cross connector 1, the connecting beam 2 is a channel steel. The inner width of the channel steel is equal to the distance between the outer sides of the two side plates 121, and the ends of the channel steel are mounted on the outside of the connecting plate 12. The ends of the channel steel connecting beam 2 are sleeved onto the outer wall of the channel steel connecting plate 12 of the cross connector 1 and connected together by bolts 6 and nuts. Because the channel steel connecting plate 12 is constrained within the channel steel connecting beam 2, the connection is stable and not easily misaligned.

[0048] In a specific embodiment of the present invention, to further stabilize the connection, two rows of through holes 13 are provided on a connecting plate 12. Both rows of through holes are parallel to the outer edge of the connecting plate 12, and each row contains three through holes. A total of six through holes are used to connect to the connecting beam 2, providing a stable and secure connection and support.

[0049] In one embodiment of the present invention, to facilitate the insertion of anchor cables 7, the inner diameter of center hole 14 in center plate 11 is 1-2 cm larger than the outer diameter of the anchor cable bundle embedded in slope 9. Anchor cables 7 are positioned in the center of center plate 11, with an appropriate gap between them and the inner ring of center plate 11. This facilitates the tensioning of anchor cables 7 and the tightening of each strand of anchor cable 7.

[0050] In a specific embodiment of the present invention, in order to stably cushion between the cross connector 1 and the anchor tensioning tool 5, the inner diameter of the steel sleeve 3 is no less than the inner diameter of the center hole 14, the pad 4 is square, and the inner diameter of the perforation of the pad 4 is no greater than the outer diameter of the anchor tensioning tool 5. The steel sleeve 3 and pad 4 can stably cushion between the cross connector 1 and the anchor tensioning tool 5 to transmit tension.

[0051] In a specific embodiment of the present invention, the anchor cable tensioning tool 5 can be purchased as a porous anchor, and each steel strand of the anchor cable 7 passes through the hole of the anchor ring 51 of the porous anchor and the clip assembly 52 respectively. After tensioning, the clip assembly 52 clamps the steel strand to tension and lock the anchor cable 7.

[0052] In a specific embodiment of the present invention, in order to make the cross connector 1 more stable, a stiffening plate 15 can be connected between adjacent connecting plates 12. The triangular stiffening plate 15 is connected at the right angle formed by two vertically adjacent connecting plates 12 to improve the firmness and durability of the connecting plates 12.

[0053] Example 2

[0054] Figure 4 Flowchart of a slope anchor cable supporting method according to Example 2 of the present invention;

[0055] like Figure 4 As shown, the slope anchor cable support method provided in this embodiment uses the slope anchor cable support device described in Example 1 to support the slope 9, including the following steps:

[0056] S1: The slope 9 to be supported is leveled and measured and laid out to determine the positions of all anchor cables to be embedded and the positions of all connecting beams to be installed.

[0057] According to the area and angle of the slope 9 to be supported, determine the positions of all pre-buried anchor cables 7 and all positions of connecting beams 2 to be set. In order to make the slope anchor cable support device fit closely with the slope 9 soil, the slope surface excavated to the design elevation needs to be smoothed.

[0058] Use a total station to measure and lay out the slope 9 to determine the positions of the anchor cables to be embedded and the connecting beams to be set for subsequent support.

[0059] S2: Drill anchor cable holes 8 at the locations where anchor cables are to be embedded, insert anchor cables 7 into the anchor cable holes 8 and inject cement-based grouting material to fix the anchor cables 7 to the slope 9.

[0060] A down-the-hole drill is used to drill holes in the slope, creating rows of anchor holes 8. Anchor cables 7, custom-made at the processing plant, are hoisted into the holes 8 and inserted to the desired length. The cables are then angled and supported outside the holes 8. Cement-based grouting material is then injected into the holes 8, integrating the cables 7 with the surrounding soil and reinforcing the slope.

[0061] S3: A cross connector 1 is mounted on the anchor cable 7 , and the connecting beam 2 is connected between the connecting plates 12 facing the adjacent cross connectors 1 through bolts 6 and nuts. The cross connector and the connecting beam 2 are both placed on the slope 9 .

[0062] A total station can be used to find out all areas where the slope height difference of the installation position of the connecting beam 2 exceeds the standard, and the slope 9 can be manually smoothed again to control the height difference of the installation position of the slope connecting beam 2 within ±3mm. During installation, a cross connector 1 is placed on each anchor cable 7, and the center of the cross connector 1 is aligned and positioned with the center of the anchor cable hole 8. Connecting beams 2 are placed at the positions where the connecting beams are to be set, and the ends of the connecting beams 2 are connected to the connecting plates 12 of the cross connectors 1. Carefully adjust the spatial position of the connecting beam 2 to ensure that its center line passes through the centers of two adjacent cross connectors 1. After installation, all the connecting beams 2 and cross connectors 1 are almost on the same plane and fit the slope 9, laying the foundation for uniform force on the subsequent support structure.

[0063] S4: Steel sleeves 3 and pads 4 are sequentially placed on the anchor cables 7. After tensioning, the anchor cables 7 are tightened using the anchor cable tensioning tool 5. The steel sleeves 3 and pads 4 are placed between the anchor cable tensioning tool 5 and the cross connector 1. All cross connectors 1 and all connecting beams 2 are tightly attached to the slope 9 to form a support structure.

[0064] After the cross connector 1 is installed, the steel sleeve 3 and the pad 4 are sequentially installed on the anchor cable 7. Each steel strand of the anchor cable 7 is passed through the hole of the anchor ring 51 of the anchor cable tensioning tool 5. The anchor cable 7 is tensioned using tensioning equipment. After tensioning to the designed prestress, the clamping piece assembly 52 of the anchor cable tensioning tool 5 is used to clamp the steel strand in the hole of the anchor ring 51, tightening the anchor cable 7 and sealing the anchor at the anchor head to maintain the tension and ensure that the tension of the anchor cable 7 can be reliably transmitted to the support structure. During the tensioning and sealing process, the deformation of the connecting beam 2 is tracked and monitored using measuring instruments to ensure that the deformation is controlled within the design allowable range.

[0065] S5: After the support is completed, the anchor cable 7 is cut along the pad 4, and the connection between the cross connector 1 and the connecting beam 2 is disconnected.

[0066] When the construction is completed, the anchor cable 7 can be cut along the base plate 4 to release the tension of the anchor cable 7. The cross connector 1 can then be separated from the slope surface. Then, the connecting bolts 6 and nuts between the connecting beam 2 and the cross connector 1 can be loosened. Except for the base plate 4, all other parts of the slope anchor cable support device can be recycled and reused.

[0067] The slope anchor cable support device and method according to the present invention are described above by way of example with reference to the accompanying drawings. However, those skilled in the art will appreciate that various modifications may be made to the slope anchor cable support device and method described above without departing from the scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A slope anchor cable support device, characterized in that: It includes a cross connector and a connecting beam connected to the cross connector, wherein: The cross connector includes a middle square plate and connecting plates respectively connected to the four edges of the middle square plate. Through holes are evenly arranged on the edges of the connecting plates away from the middle square plate. A middle hole is arranged in the middle of the middle square plate. An anchor cable pre-buried on the slope to be supported is passed through the middle hole. Mounting holes corresponding to the through holes are provided at both ends of the connecting beam, and the connecting beam is connected between the connecting plates facing each other of the adjacent cross connectors, and the corresponding through holes and mounting holes are aligned and fixed by bolts and nuts; A steel sleeve is provided on the side of the middle square plate away from the slope, and a pad with perforations is provided on the upper part of the steel sleeve. The anchor cable passes through the steel sleeve and the pad in sequence and is tightened by an anchor cable tensioning tool passing through the anchor cable.

2. The slope anchor cable support device according to claim 1, characterized in that: Long strip side plates are connected along both side edges of the connecting plate, and the side plates are perpendicular to the connecting plate.

3. The slope anchor cable support device according to claim 2, characterized in that: The connecting beam is a channel steel, the inner width of the channel steel is equal to the distance between the outer sides of the two side plates, and the end of the channel steel is fitted on the outside of the connecting plate.

4. The slope anchor cable support device according to claim 1, characterized in that: The through holes are arranged in two rows, and each row has three through holes.

5. The slope anchor cable support device according to claim 1, characterized in that: The inner diameter of the middle hole is 1 cm to 2 cm larger than the outer diameter of the anchor cable.

6. The slope anchor cable support device according to claim 1, characterized in that: The inner diameter of the steel sleeve is not less than the inner diameter of the center hole.

7. The slope anchor cable support device according to claim 1, characterized in that: The pad is square, and the inner diameter of the through hole is no larger than the outer diameter of the anchor cable tensioning tool.

8. The slope anchor cable support device according to claim 1, characterized in that: The anchor cable tensioning tool is a porous anchor, and each steel strand of the anchor cable passes through the holes of the anchor ring of the porous anchor respectively. The clip assembly of the anchor cable tensioning tool cooperates with the holes of the anchor ring to tighten the steel strand.

9. The slope anchor cable support device according to claim 1, characterized in that: Stiffening plates are connected between adjacent connecting plates.

10. A slope anchor cable support method, characterized in that: The slope anchor cable support device according to any one of claims 1 to 9 is used to support the slope, comprising the following steps: S1: Flatten the slope to be supported, measure and lay out the lines, and determine the positions of all anchor cables to be embedded and all connecting beams to be installed; S2: Drilling anchor holes at the locations of the anchor cables to be embedded, inserting the anchor cables into the anchor holes, and injecting cement-based grouting material to fix the anchor cables to the slope; S3: Sleeve the cross connector on the anchor cable, connect the connecting beam between the connecting plates of adjacent cross connectors by means of the bolts and nuts, and place the cross connecting plates and the connecting beam on the slope; S4: sequentially sleeve the steel sleeve and the pad on the anchor cable, and after tensioning, tighten the anchor cable using the anchor cable tensioning tool, and place the steel sleeve and the pad between the anchor cable tensioning tool and the cross connector, so that all cross connectors and all connecting beams are tightly attached to the slope to form a support structure; S5: After the support is completed, the anchor cable is cut along the pad, and the connection between the cross connector and the connecting beam is disconnected.

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