Steel sheet pile revetment dispersion compression type anchor rod device

Abstract

The application relates to a steel sheet pile revetment dispersion compression type anchor rod device, which comprises a tension anchor head, a guide cone surface arranged at the other end of the tension anchor head, and a bearing anchor plate fixedly connected to the end of the tension anchor head away from the guide cone surface; the tension anchor cable comprises multiple groups of anchor rods with increasing lengths, the end of each group of anchor rods close to the tension anchor head is connected with the bearing anchor plate, and the anchor rod group with the longest length is connected with the bearing anchor plate connected with the tension anchor head; the grouting pipeline comprises a primary grouting pipe and a secondary splitting grouting pipe, the secondary splitting grouting pipe is sequentially penetrated into the central hole of the bearing anchor plate and connected with the tension anchor head, and the primary grouting pipe is bound on the tension anchor cable; the anchor cable partition plate is provided with multiple pieces, the multiple pieces of anchor cable partition plates are arranged in sequence and at intervals along the length direction of the tension anchor cable, and the pieces of anchor cable partition plates are provided with separation holes for penetrating the grouting pipeline and the tension anchor cable. The application reduces the tension force borne by the anchoring end, reduces the probability of damage occurrence, and saves construction cost.

Description

Technical Field

[0001] This application relates to the field of slope protection and reinforcement technology, and in particular to a steel sheet pile revetment distributed compression type anchor device. Background Technology

[0002] Tension anchors are commonly used in geological disaster control projects. This type of anchor basically adopts the technology of temporary anchors in foundation pit engineering. When using tension anchors, the stress distribution is uneven, which can easily lead to failure due to excessive tension concentration. This can cause tension cracks in the grouting solidification body at the anchoring end, resulting in problems such as low anchoring efficiency, high cost, poor corrosion resistance, and significant creep. Summary of the Invention

[0003] This application provides a steel sheet pile revetment distributed compression type anchor device to solve the problem in related technologies where tension type anchors have uneven stress distribution and are prone to failure due to excessive tension concentration.

[0004] This application provides a distributed compression anchor device for steel sheet pile revetment, comprising: The tension anchor head is a hollow cylindrical structure with one end open. The other end of the tension anchor head is provided with a guide cone surface. The end of the tension anchor head away from the guide cone surface is fixedly connected to a load-bearing anchor plate that closes the opening of the tension anchor head. The tensioning anchor cable includes multiple sets of anchor rods with sequentially increasing lengths. Each set of anchor rods is connected to a bearing anchor plate at the end near the tensioning anchor head. The longest set of anchor rods is connected to the bearing anchor plate connected to the tensioning anchor head. The grouting pipe includes a primary grouting pipe and a secondary splitting grouting pipe. The secondary splitting grouting pipe is sequentially inserted into the central hole of the bearing anchor plate and then connected to the tensioning anchor head. The primary grouting pipe is tied to the tensioning anchor cable. Anchor cable partition, wherein multiple anchor cable partitions are provided, and the multiple anchor cable partitions are arranged at intervals along the length direction of the tension anchor cable. Each anchor cable partition has a partition hole through which the grouting pipe and the tension anchor cable pass.

[0005] In some embodiments: the bearing anchor plate is a disc-shaped structure, and the bearing anchor plate has anchoring holes around its circumference for inserting multiple anchor rods. Each anchor rod has a compression sleeve pressed onto one end near the tensioning anchor head. The compression sleeve is located at the end of the bearing anchor plate near the tensioning anchor head, and the outer diameter of the compression sleeve is larger than the inner diameter of the anchoring hole.

[0006] In some embodiments: a plurality of protective sleeves with one end closed and communicating with each of the anchor holes are fixedly connected to one end of the bearing anchor plate near the tension anchor head, and the open end of the protective sleeve is fixedly connected to the anchor hole of the bearing anchor plate. The end of the anchor rod near the tensioning anchor head and the compression sleeve are both located inside the protective sleeve. The protective sleeve is also provided with multiple butterfly springs that are sequentially threaded through the anchor rod. The multiple butterfly springs are located between the compression sleeve and the bearing anchor plate along the axial direction of the anchor rod.

[0007] In some embodiments: the anchoring holes of the bearing anchor plate are all provided with internal threads, and the open end of the protective sleeve is provided with external threads. The protective sleeve is connected to the internal threads of the anchoring holes through the external threads.

[0008] In some embodiments: each group of anchor rods is provided with a sleeve around its outer periphery, the sleeve extends along the length of the anchor rod to the free end of the anchor rod, the anchor rods are located inside the sleeve and are slidably connected to each other, and the end of the sleeve near the bearing anchor plate is fixedly connected to the bearing anchor plate.

[0009] In some embodiments: the diameter of the primary grouting pipe is larger than the diameter of the secondary splitting grouting pipe, the wall thickness of the secondary splitting grouting pipe is larger than the wall thickness of the primary grouting pipe, both the primary grouting pipe and the secondary splitting grouting pipe are provided with a plurality of grout outlet holes, and both the primary grouting pipe and the secondary splitting grouting pipe are provided with a plug at the end near the tensioning anchor head.

[0010] In some embodiments: the anchor cable partition is a disc-shaped structure with a set thickness, the outer circle of the anchor cable partition has a plurality of arc-shaped notches that are recessed towards the center, and the anchor cable partition also has grout flow holes for grouting material to flow.

[0011] In some embodiments, the anchor bolt is a prestressed steel strand or a finely threaded rod.

[0012] In some embodiments, the end of the anchor rod away from the tensioning anchor head is provided with an anchor plate and an anchor clamp.

[0013] In some embodiments, each group of anchors has two anchors of the same length, and the anchors in each group are symmetrically arranged circumferentially on the bearing anchor plate.

[0014] The beneficial effects of the technical solution provided in this application include: This application provides a distributed compression anchor device for sheet pile revetment. The distributed compression anchor device includes a tension anchor head, which is a hollow cylindrical structure with one open end. The other end of the tension anchor head has a guide cone surface. A load-bearing anchor plate that closes the opening of the tension anchor head is fixedly connected to the end of the tension anchor head away from the guide cone surface. The tension anchor cable includes multiple sets of anchor rods with progressively increasing lengths. The end of each set of anchor rods near the tension anchor head is connected to… There are load-bearing anchor plates, in which the longest set of anchor rods is connected to the load-bearing anchor plate connected to the tension anchor head; grouting pipes, which include primary grouting pipes and secondary splitting grouting pipes, the secondary splitting grouting pipes are sequentially inserted into the central hole of the load-bearing anchor plate and then connected to the tension anchor head, the primary grouting pipes are tied to the tension anchor cable; anchor cable partitions, which are provided in multiple pieces, the multiple anchor cable partitions are arranged sequentially at intervals along the length of the tension anchor cable, and each anchor cable partition has a partition hole for inserting the grouting pipes and the tension anchor cable.

[0015] Therefore, the tensioning anchor cable of the sheet pile revetment distributed compression type anchor device of this application includes multiple sets of anchors with sequentially increasing lengths. Each set of anchors has a bearing anchor plate connected to the end near the tensioning anchor head, with the longest set of anchors connected to the bearing anchor plate connected to the tensioning anchor head. After each set of anchors is connected to the bearing anchor plate, the tension prestress of the anchor is distributed to the bearing anchor plate connected to it. Multiple bearing anchor plates distribute the concentrated tension to different locations in the concrete anchor body, reducing the tension borne by the anchoring end, reducing the probability of failure, saving construction costs, and simultaneously ensuring high structural reliability and safety. This saves on rework caused by failure, ensures anchoring quality, and improves construction efficiency, cost, and quality. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of this application; Figure 2 for Figure 1 Enlarged view of the central section structure; Figure 3 This is a schematic diagram of the structure of the load-bearing anchor plate in an embodiment of this application; Figure 4 This is a structural schematic diagram of the anchor cable diaphragm in an embodiment of this application.

[0018] Figure label: 1. Tensioning anchor head; 2. Bearing anchor plate; 3. Anchor rod; 4. Secondary splitting grouting pipe; 5. Primary grouting pipe; 6. Anchor cable partition; 7. Extrusion sleeve; 8. Protective sleeve; 9. Butterfly spring; 21. Center hole; 22. Anchoring hole; 61. Separation hole; 62. Grout flow hole; 63. Circular arc notch. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] This application provides a steel sheet pile revetment distributed compression type anchor device, which can solve the problem in related technologies where tension type anchor cables have uneven stress distribution and are prone to failure due to excessive tension concentration.

[0021] See Figures 1 to 4 As shown in the figure, this application provides a steel sheet pile revetment distributed compression type anchor device, including: The tension anchor head 1 is a hollow cylindrical structure with one open end. A guide cone surface is provided at the other end of the tension anchor head 1. A bearing anchor plate 2, which closes the open end of the tension anchor head 1, is fixedly connected to the end of the tension anchor head 1 away from the guide cone surface. The tension anchor head 1 is used to guide the tension anchor cable and the bearing anchor plate 2 into the borehole, so that the tension anchor cable and the bearing anchor plate 2 can smoothly enter the bottom of the borehole.

[0022] The tensioning anchor cable includes multiple sets of anchor rods 3 with sequentially increasing lengths. Each set of anchor rods 3 is connected to a bearing anchor plate 2 at one end near the tensioning anchor head 1. The longest set of anchor rods 3 is connected to the bearing anchor plate 2 connected to the tensioning anchor head 1.

[0023] In this embodiment, the anchor bolts 3 are provided in three sets: two bundles of long cables with a length of 17m, two bundles of medium cables with a length of 13m, and two bundles of short cables with a length of 9m. Each anchor bolt 3 has an additional 0.7m working section for cutting, with a length error of less than or equal to 50cm. Under other working conditions, the cutting length can be adjusted as needed.

[0024] The grouting pipeline includes a primary grouting pipe 5 and a secondary fracturing grouting pipe 4. The secondary fracturing grouting pipe 4 is sequentially inserted into the central hole 21 of each bearing anchor plate 2 and then connected to the tension anchor head 1. The primary grouting pipe 5 is tied to the tension anchor cable. The primary grouting pipe 5 and the secondary fracturing grouting pipe 4 are parallel to each other and pass through the bearing anchor plate 2 and are tied together with the anchor rod 3. The primary grouting pipe 5 is a Φ25 plastic pipe, and the secondary fracturing grouting pipe 4 is a Φ20 plastic pipe. The secondary fracturing grouting pipe 4 is placed in the middle of the tension anchor cable.

[0025] Anchor cable partition 6, comprising multiple partitions arranged at intervals along the length of the tensioned anchor cable, each partition 6 having a separating hole 61 for inserting the grouting pipe and the tensioned anchor cable. The separating hole 61 of the anchor cable partition 6 is used to separate the grouting pipe and the tensioned anchor cable to prevent them from becoming entangled.

[0026] In actual use, after assembling the steel sheet pile revetment distributed compression anchor device as described in the above embodiment, a unified first grouting is performed. The first grouting mixture uses 42.5 grade silicate cement, medium sand, and the sand is sieved to remove shells, mud, and pebbles. The mortar uses cement mortar with a cement-sand ratio of 1:1 and a water-cement ratio of 0.45.

[0027] The anchor bolt grout should be thoroughly mixed and used immediately before initial setting. Strict measures must be taken to prevent stones and debris from contaminating the grout. The grouting pressure should be no less than 0.4 MPa. The head of the grouting pipe should be inserted into the borehole, leaving a 50-100 mm gap from the bottom. Grout should be continuously injected from bottom to top through the grouting pipe 5. Grouting should be stopped when grout overflows from the borehole opening or the vent pipe stops venting. Then, sealing grouting should be performed at a pressure no less than 2.5 MPa.

[0028] After the first grouting, once the strength of the grout reaches 5.0 MPa, a second high-pressure grouting is performed using the secondary splitting grouting pipe 4. The initial grouting pressure generally needs to reach 2.5 MPa to ensure that the grouting hole is opened. After that, the grouting pressure should not be less than 0.8 MPa.

[0029] Secondary fracturing grouting typically maintains the same pressure for 15 minutes. If the pressure gauge reading shows a slow increase after a period of consistent pressure, grouting should be stopped, at which point the fracturing grouting is complete. If the pressure decreases after a period of grouting, further grouting is required, stopping after 15 minutes. The secondary fracturing grouting material used is pure cement slurry with a water-cement ratio of 0.45.

[0030] After the secondary splitting grouting is completed, the breast wall formwork is installed on the driven steel sheet piles, and concrete is poured. At the same time, the anchor carrier is installed and ready for tensioning.

[0031] After the concrete of the breast wall has reached the required strength, anchor rod 3 is fixed to the pre-reserved load-bearing structure of the breast wall, and then tensioning is carried out using a graded tensioning method with equal load. During the tensioning of anchor rod 3, the compressive strength of the grouting material reaches 35 MPa.

[0032] Before tensioning, pre-tension the anchor rod 3 1-2 times with the designed axial tensile force value to ensure that the anchor rod 3 is completely straight and that all parts are in tight contact before proceeding with the full tensioning. Install the tensioning tool anchor clamp on the steel strand of the first set of anchor rods 3 and tension it to 31.05kN. Then tension the latter two sets of anchor rods 3 together to the designed axial tensile force value, and then unload it to 80kN for locking.

[0033] The tensioning anchor cable of the sheet pile revetment distributed compression type anchor device in this application embodiment includes multiple sets of anchor rods 3 with sequentially increasing lengths. Each set of anchor rods 3 is connected to a bearing anchor plate 2 at one end near the tensioning anchor head 1. The longest set of anchor rods 3 is connected to the bearing anchor plate 2 connected to the tensioning anchor head 1. After each set of anchor rods 3 is connected to the bearing anchor plate 2, the tensioning prestress of the anchor rods 3 is distributed to the bearing anchor plate 2 connected to them.

[0034] Multiple load-bearing anchor plates 2 distribute the concentrated tensile force to different locations on the concrete anchor body, reducing the tensile force borne by the anchor end, lowering the probability of failure, saving construction costs, and ensuring high structural reliability and safety. This saves on rework caused by failure, guarantees anchor quality, and improves construction efficiency, cost, and quality.

[0035] In some alternative embodiments: see Figure 2 and Figure 3 As shown in the embodiment of this application, a distributed compression anchor device for sheet pile revetment is provided. The bearing anchor plate 2 of the distributed compression anchor device for sheet pile revetment has a disc-shaped structure. Anchor holes 22 for multiple anchor rods 3 are opened on the circumference of the bearing anchor plate 2. Each anchor rod 3 is press-fitted with a compression sleeve 7 at the end near the tension anchor head 1. The compression sleeve 7 is located at the end of the bearing anchor plate 2 near the tension anchor head 1. The outer diameter of the compression sleeve 7 is larger than the inner diameter of the anchor hole 22.

[0036] Multiple protective sleeves 8, each with an open end and closed perimeter, are fixedly connected to one end of the bearing anchor plate 2 near the tension anchor head 1. The open ends of the protective sleeves 8 are connected to the anchor holes 22. The end of the anchor rod 3 near the tension anchor head 1 and the compression sleeve 7 are both located inside the protective sleeve 8. Multiple butterfly springs 9 are also sequentially threaded onto the anchor rod 3 within the protective sleeve 8. These butterfly springs 9 are positioned between the compression sleeve 7 and the bearing anchor plate 2 along the axial direction of the anchor rod 3.

[0037] All anchor holes 22 of the bearing anchor plate 2 are provided with internal threads, and all open ends of the protective sleeve 8 are provided with external threads. The protective sleeve 8 is connected to the internal threads of the anchor holes through the external threads. A sleeve (not shown in the figure) is fitted around the outer periphery of each group of anchor rods 3. The sleeve extends along the length of the anchor rod 3 to the free end of the anchor rod 3. The anchor rods 3 are located inside the sleeve and are slidably connected to each other. The end of the sleeve near the bearing anchor plate 2 is fixedly connected to the bearing anchor plate 2.

[0038] In this embodiment, a compression sleeve 7 is pressed onto the end of the anchor rod 3 near the tension anchor head 1, so that the anchor rod 3 is axially limited on the tension anchor head 1 by the compression sleeve 7. Multiple butterfly springs 9 are provided on the anchor rod 3 between the compression sleeve 7 and the bearing anchor plate 2. The multiple butterfly springs 9 are used to provide reaction force for tensioning the anchor rod 3, so that both ends of the anchor rod 3 generate preload, maintaining preload at both ends of the anchor rod 3 for a long time, and preventing slippage and force loss failure at one end of the anchor rod 3.

[0039] Multiple protective sleeves 8, each with a closed perimeter and communicating with each anchor hole 22, are fixedly connected to one end of the bearing anchor plate 2 near the tension anchor head 1. These protective sleeves 8 are used to isolate the grout and prevent it from entering the sleeves and affecting the elastic deformation of the disc spring 9, thus preventing the grout from generating elastic potential energy. Each set of anchor rods 3 is fitted with a sleeve around its outer perimeter. This sleeve is used to isolate the grout and prevent it from entering the sleeve and affecting the tensioning of the anchor rod 3.

[0040] In some alternative embodiments: see Figures 1 to 4 As shown in the embodiment of this application, a distributed compression anchor device for steel sheet pile revetment is provided. The diameter of the primary grouting pipe 5 is larger than the diameter of the secondary splitting grouting pipe 4, and the wall thickness of the secondary splitting grouting pipe 4 is larger than the wall thickness of the primary grouting pipe 5. Both the primary grouting pipe 5 and the secondary splitting grouting pipe 4 have several grout outlet holes. A plug is provided at the end of both the primary grouting pipe 5 and the secondary splitting grouting pipe 4 near the tensioning anchor head 1.

[0041] The anchor plate 6 is a disc-shaped structure with a predetermined thickness. Multiple concave arc-shaped notches 63 are formed on the outer circumference of the anchor plate 6, and grout flow holes 62 are also provided for grout flow. The anchor rod 3 is preferably, but not limited to, prestressed steel strand or finely threaded rod. An anchor plate (not shown in the figure) and anchor clamp (not shown in the figure) are provided at the end of the anchor rod 3 furthest from the tensioning anchor head 1. Each group of anchor rods 3 has two anchor rods of the same length, and each group of anchor rods 3 is symmetrically arranged circumferentially on the bearing anchor plate 2.

[0042] Working principle This application provides a distributed compression anchor device for sheet pile revetment. The distributed compression anchor device includes a tension anchor head 1, which is a hollow cylindrical structure with one open end. The other end of the tension anchor head 1 has a guide cone surface. A load-bearing anchor plate 2, which closes the opening of the tension anchor head 1, is fixedly connected to the end of the tension anchor head 1 away from the guide cone surface. The device also includes a tension anchor cable, comprising multiple sets of anchor rods 3 with sequentially increasing lengths. Each set of anchor rods 3 has a load-bearing anchor plate 2 connected to the end of each set of anchor rods near the tension anchor head 1. Anchor plate 2, wherein the longest set of anchor rods 3 is connected to the bearing anchor plate 2 connected to the tension anchor head 1; grouting pipe, which includes a primary grouting pipe 5 and a secondary splitting grouting pipe 4, the secondary splitting grouting pipe 4 is sequentially inserted into the central hole of the bearing anchor plate 2 and then connected to the tension anchor head 1, the primary grouting pipe 5 is tied to the tension anchor cable; anchor cable partition 6, which is provided with multiple pieces, the multiple anchor cable partition 6 are arranged sequentially at intervals along the length direction of the tension anchor cable, and each anchor cable partition 6 has a partition hole 61 for inserting the grouting pipe and the tension anchor cable.

[0043] Therefore, the tensioning anchor cable of the sheet pile revetment distributed compression type anchor device of this application includes multiple sets of anchor rods 3 with sequentially increasing lengths. Each set of anchor rods 3 has a bearing anchor plate 2 connected to one end near the tensioning anchor head 1. The longest set of anchor rods 3 is connected to the bearing anchor plate 2 connected to the tensioning anchor head 1. After each set of anchor rods 3 is connected to the bearing anchor plate 2, the tension prestress of the anchor rods 3 is distributed to the bearing anchor plate 2 connected to them. Multiple bearing anchor plates 2 distribute the concentrated tension to different locations in the concrete anchor body, reducing the tension borne by the anchoring end, reducing the probability of failure, saving construction costs, and simultaneously ensuring high structural reliability and safety. This saves on rework caused by failure, ensures anchoring quality, and improves construction efficiency, cost, and quality.

[0044] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0045] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0046] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A distributed compression anchor bolt device for steel sheet pile revetment, characterized in that, include: Tensioning anchor head (1), the tensioning anchor head (1) is a hollow cylindrical structure with one end open, the other end of the tensioning anchor head (1) is provided with a guide cone surface, and the end of the tensioning anchor head (1) away from the guide cone surface is fixedly connected to a bearing anchor plate (2) that closes the opening of the tensioning anchor head. The tensioning anchor cable includes multiple sets of anchor rods (3) with sequentially increasing lengths. Each set of anchor rods (3) is connected to a bearing anchor plate (2) at the end near the tensioning anchor head (1). The longest set of anchor rods (3) is connected to the bearing anchor plate (2) connected to the tensioning anchor head (1). The grouting pipe includes a primary grouting pipe (5) and a secondary splitting grouting pipe (4). The secondary splitting grouting pipe (4) is inserted into the center hole (21) of the bearing anchor plate (2) and then connected to the tensioning anchor head (1). The primary grouting pipe (5) is tied to the tensioning anchor cable. Anchor cable partition (6), the anchor cable partition (6) is provided in multiple pieces, the multiple anchor cable partitions (6) are arranged in sequence at intervals along the length direction of the tension anchor cable, and each anchor cable partition (6) is provided with a partition hole (61) for the grouting pipe and the tension anchor cable to pass through.

2. The sheet pile revetment distributed compression type anchor device as described in claim 1, characterized in that: The bearing anchor plate (2) has a disc-shaped structure. The bearing anchor plate (2) has anchor holes (22) on its circumference for inserting multiple anchor rods (3). Each anchor rod (3) has a compression sleeve (7) pressed into one end near the tension anchor head (1). The compression sleeve (7) is located at the end of the bearing anchor plate (2) near the tension anchor head (1). The outer diameter of the compression sleeve (7) is larger than the inner diameter of the anchor hole (22).

3. The sheet pile revetment distributed compression type anchor device as described in claim 2, characterized in that: The bearing anchor plate (2) is fixedly connected to one end of the tension anchor head (1) with a plurality of protective sleeves (8) that are open at one end and closed around the perimeter, respectively communicating with each of the anchor holes (22). The open end of the protective sleeve (8) is fixedly connected to the anchor hole (22) of the bearing anchor plate (2). The end of the anchor rod (3) near the tensioning anchor head (1) and the extrusion sleeve (7) are both located inside the protective sleeve (8). The protective sleeve (8) is also provided with multiple butterfly springs (9) that are sequentially threaded through the anchor rod (3). The multiple butterfly springs (9) are located between the extrusion sleeve (7) and the bearing anchor plate (2) along the axial direction of the anchor rod (3).

4. The sheet pile revetment distributed compression type anchor device as described in claim 3, characterized in that: The anchoring holes (22) of the bearing anchor plate (2) are all provided with internal threads, and the opening end of the protective sleeve (8) is provided with external threads. The protective sleeve (8) is connected to the internal threads of the anchoring holes (22) through the external threads.

5. The sheet pile revetment distributed compression type anchor device as described in claim 1, characterized in that: Each set of anchor rods (3) is fitted with a sleeve around its outer periphery. The sleeve extends along the length of the anchor rod (3) to the free end of the anchor rod (3). The anchor rods (3) are located inside the sleeve and are slidably connected to each other. The end of the sleeve near the bearing anchor plate (2) is fixedly connected to the bearing anchor plate (2).

6. The sheet pile revetment distributed compression type anchor device as described in claim 1, characterized in that: The diameter of the primary grouting pipe (5) is larger than that of the secondary splitting grouting pipe (4), and the wall thickness of the secondary splitting grouting pipe (4) is larger than that of the primary grouting pipe (5). Both the primary grouting pipe (5) and the secondary splitting grouting pipe (4) are provided with a number of grout outlet holes. Both the primary grouting pipe (5) and the secondary splitting grouting pipe (4) are provided with a plug at the end near the tensioning anchor head (1).

7. The sheet pile revetment distributed compression type anchor device as described in claim 1, characterized in that: The anchor cable partition (6) is a disc-shaped structure with a set thickness. The outer circle of the anchor cable partition (6) has multiple arc-shaped notches (63) that are recessed towards the center. The anchor cable partition (6) also has grout flow holes (62) for grout to flow.

8. The sheet pile revetment distributed compression type anchor device as described in claim 1, characterized in that: The anchor rod (3) is a prestressed steel strand or a finely rolled threaded rod.

9. A steel sheet pile revetment distributed compression type anchor device as described in claim 1, characterized in that: The anchor rod (3) is provided with an anchor plate and an anchor clamp at the end away from the tensioning anchor head (1).

10. A steel sheet pile revetment distributed compression type anchor device as described in claim 1, characterized in that: Each set of anchor rods (3) has two anchor rods (3) of the same length, and each set of anchor rods (3) is symmetrically arranged on the bearing anchor plate (2).

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