Prefabricated anchor pier and construction method thereof

Abstract

The application relates to the technical field of water and electricity engineering, and relates to an assembled anchor pier and a construction method thereof. The assembled anchor pier comprises a connecting layer, a flexible pad, a prefabricated anchor pier, an anchor device and an anchor rod. The connecting layer is provided with a first anchor cable hole and a first anchor rod hole. The flexible pad is arranged in layers with the connecting layer and is provided with a second anchor cable hole opposite the first anchor cable hole and a second anchor rod hole opposite the first anchor rod hole, and a side of the flexible pad away from the connecting layer is used for being arranged on a mounting area. The prefabricated anchor pier is arranged on a side of the connecting layer away from the flexible pad and is provided with a third anchor cable hole opposite the first anchor cable hole and a third anchor rod hole opposite the first anchor rod hole. The anchor device is arranged on the prefabricated anchor pier and is opposite the third anchor cable hole, and the anchor device is used for allowing an anchor cable to pass through. The anchor rod is arranged through the first anchor rod hole and the second anchor rod hole and is inserted into the third anchor rod hole, and an end of the anchor rod away from the prefabricated anchor pier is used for being inserted into a fourth anchor rod hole of the mounting area. The assembled anchor pier is beneficial to improving construction efficiency.

Description

Technical Field

[0001] This application relates to the field of hydropower engineering technology, and in particular to a prefabricated anchor pier and its construction method. Background Technology

[0002] With the rapid development of infrastructure projects and the continuous iteration of construction technologies in my country, numerous new equipment and construction techniques have been applied in large-scale projects, greatly improving construction efficiency and project quality. However, as the scale of mechanized equipment application continues to increase, the marginal benefit growth rate of construction efficiency is gradually declining. The main factor limiting construction efficiency is gradually shifting from the degree of mechanization to the necessary time required for concrete materials to harden. Therefore, prefabricated structures are increasingly being used in engineering projects. However, due to the influence of the engineering environment, the current application of prefabricated structures is mainly limited to projects such as stations and bridges in flat terrain. Hydropower projects, due to their higher elevation and the fact that structures are often built on sloping slopes, resulting in complex stress at interfaces, are difficult to adapt to prefabricated structures.

[0003] Among them, prestressed anchor piers are an important structure commonly found in hydropower projects. The concrete hardening process in their cast-in-place construction process consumes a lot of time, which greatly affects construction efficiency. Summary of the Invention

[0004] Therefore, it is necessary to provide a prefabricated anchor block and its construction method to improve the construction efficiency of prestressed anchor blocks.

[0005] A prefabricated anchor block, comprising:

[0006] The connecting layer is provided with a first anchor cable hole and a first anchor bolt hole;

[0007] A flexible pad is stacked on top of the connecting layer and has a second anchor hole opposite to the first anchor hole and a second anchor hole opposite to the first anchor hole. The side of the flexible pad facing away from the connecting layer is used to be installed in the installation area.

[0008] A prefabricated anchor block is provided on the side of the connecting layer facing away from the flexible pad, and has a third anchor hole opposite to the first anchor hole and a third anchor hole opposite to the first anchor hole.

[0009] An anchorage, disposed on the precast anchor block and opposite to the third anchor cable hole, the anchorage being used for the anchor cable to pass through; and,

[0010] An anchor rod passes through the first anchor rod hole and the second anchor rod hole, and is inserted into the third anchor rod hole. The end of the anchor rod away from the precast anchor block is used to be inserted into the fourth anchor rod hole in the installation area.

[0011] In one embodiment, the anchor bolt includes a first rod portion, a second rod portion, and a sleeve. The sleeve is inserted into the first anchor bolt hole. The first rod portion passes through the flexible pad and the connecting layer and is connected to the sleeve. One end of the first rod portion away from the sleeve is used to be inserted into the fourth anchor bolt hole. The second rod portion is connected to the sleeve and inserted into the third anchor bolt hole.

[0012] In one embodiment, the end of the anchor bolt away from the precast anchor block is provided with a self-locking structure, at least a portion of which is capable of radially expanding outward to lock with the installation area.

[0013] In one embodiment, the prefabricated anchor block further includes a centering device that passes through the first anchor hole and the second anchor hole, with the outer wall of the centering device abutting against the inner walls of the first anchor hole and the second anchor hole.

[0014] In one embodiment, the centering device includes a main body and a limiting part, the main body passing through the first anchor cable hole and the second anchor cable hole, and the limiting part being connected to the main body and abutting against the side of the connecting layer opposite to the flexible pad.

[0015] In one embodiment, the connecting layer has a first tenon protrusion on the side facing the precast anchor, and the precast anchor has a groove on the side facing the connecting layer, with at least a portion of the first tenon protrusion embedded in the groove.

[0016] In one embodiment, the connecting layer has a second tenon protrusion protruding on the side facing the flexible pad, which contacts the flexible pad.

[0017] In one embodiment, the prefabricated anchor block further includes an anchor plate, the anchor plate including a connecting part and an installation part, the prefabricated anchor block having an installation groove recessed on the side facing away from the connecting layer, the connecting part being disposed in the third anchor cable hole, the installation part being connected to the connecting part and embedded in the installation groove, the connecting part having an installation hole communicating with the third anchor cable hole, and the anchor being disposed on the connecting part and opposite to the installation hole.

[0018] A construction method for prefabricated anchor blocks includes:

[0019] A fourth anchor cable hole is opened in the installation area;

[0020] A locator is provided, the locator including an anchor cable locating part, an anchor bolt locating part, and a connecting rod connecting the anchor cable locating part and the anchor bolt locating part;

[0021] The anchor positioning part is positioned so that it is opposite to the fourth anchor hole, and the opening position of the fourth anchor hole is positioned by the anchor positioning part.

[0022] The fourth anchor hole is opened in the installation area;

[0023] An anchor rod is inserted into the fourth anchor rod hole, causing the self-locking structure at the end of the anchor rod to expand and lock with the fourth anchor rod hole;

[0024] The flexible pad and the connecting layer are sequentially arranged on the installation area, such that the anchor rod passes through the second anchor rod hole of the flexible pad and the first anchor rod hole of the connecting layer;

[0025] The prefabricated anchor block is placed on the connecting layer, so that the anchor rod is inserted into the third anchor rod hole of the prefabricated anchor block.

[0026] In one embodiment, in the step of inserting the anchor rod into the fourth anchor rod hole, the first rod portion of the anchor rod is inserted into the fourth anchor rod hole;

[0027] In the step of sequentially setting the flexible pad and the connecting layer on the installation area, the first rod portion passes through the second anchor hole and the first anchor hole;

[0028] After the step of sequentially placing the flexible pad and the connecting layer on the installation area, the construction method further includes:

[0029] A sleeve is provided in the first anchor bolt hole, so that the sleeve is connected to the first rod part;

[0030] A second rod portion connected to the sleeve is provided on the side of the connecting layer opposite to the flexible pad;

[0031] In the step of setting the prefabricated anchor block on the connecting layer, the second rod is inserted into the third anchor bolt hole.

[0032] The aforementioned prefabricated anchor blocks utilize anchor bolts that provide effective support and restraint for the flexible pad, connecting layer, and prefabricated anchor blocks, ensuring stable installation of the prefabricated anchor blocks in the installation area. The flexible pad between the connecting layer and the installation area maintains soft contact with both, enhancing the continuity of force transmission and improving the structural reliability of the prefabricated anchor blocks. Therefore, this prefabricated anchor block system enables stable and reliable installation of prefabricated anchor blocks in the installation area, eliminating the need for cast-in-place construction and improving construction efficiency. Attached Figure Description

[0033] Figure 1 This is an exploded view of the prefabricated anchor block installed in the installation area in some embodiments.

[0034] Figure 2 for Figure 1The diagram shows an exploded view of some components of the assembled anchor block.

[0035] Figure 3 for Figure 2 The diagram shows a structural schematic of some components of the assembled anchor block from another angle.

[0036] Figure 4 for Figure 1 An exploded view of another component of the assembled anchor block shown.

[0037] Figure 5 This is a schematic diagram of the explosion of the anchor bolt in some embodiments.

[0038] Figure 6 for Figure 5 The diagram shows a magnified view of the anchor bolt in area A.

[0039] Figure 7 for Figure 5 The diagram shows a magnified view of the anchor bolt in region B.

[0040] Figure 8 This is a schematic diagram of the locator in some embodiments.

[0041] Figure 9 This is a schematic diagram of the structure in some embodiments where the locator is located on the installation area.

[0042] Figure 10 This is a flowchart illustrating the construction method of prefabricated anchor blocks in some embodiments.

[0043] Figure label:

[0044] 11. Connecting layer; 111. First anchor cable hole; 112. First anchor bolt hole; 113. First tenon protrusion; 114. Second tenon protrusion; 12. Flexible pad; 121. Second anchor cable hole; 122. Second anchor bolt hole; 13. Precast anchor block; 131. Third anchor cable hole; 132. Third anchor bolt hole; 133. Groove; 134. Installation groove; 14. Anchor; 15. Anchor bolt; 151. First bolt section; 152. Second bolt section; 15 3. Sleeve; 154. Self-locking structure; 16. Centerer; 161. Main body; 162. Limiting part; 17. Anchor plate; 171. Connecting part; 172. Mounting part; 1721. Mounting hole; 20. Positioner; 21. Anchor cable positioning part; 211. Anchor cable positioning hole; 22. Anchor bolt positioning part; 221. Anchor bolt positioning hole; 23. Connecting rod; 30. Installation area; 31. Fourth anchor cable hole; 32. Fourth anchor bolt hole; 40. Anchor cable. Detailed Implementation

[0045] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0046] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship 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.

[0047] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0048] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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 of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0049] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0050] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0051] In the field of hydropower engineering, traditional anchor blocks are fabricated using cast-in-place construction techniques, requiring workers to construct steel reinforcement structures and install molds in hazardous slope environments, posing significant safety hazards. Casting anchor blocks necessitates the use of concrete pouring equipment, which presents numerous inconveniences in slope conditions and increases construction costs. Anchor block hardening takes at least seven days, consuming a considerable amount of construction time. Traditional precast anchor block fabrication focuses only on the main structure, resulting in poor connectivity and adaptability for different anchor cable locations, and a lack of rapid connection methods.

[0052] To address the aforementioned issues, this application provides a prefabricated anchor pier and its construction method.

[0053] refer to Figure 1 As shown, Figure 1 A schematic diagram of the prefabricated anchor block is shown in some embodiments of this application.

[0054] The prefabricated anchor piers provided in this application can be applied to fields such as hydropower engineering. Specifically, they can be used to install prefabricated anchor piers 13 in installation areas 30 in environments such as inclined slopes to achieve slope anchoring.

[0055] In some embodiments, the prefabricated anchor block may include a connecting layer 11, a flexible pad 12, a prefabricated anchor block 13, an anchor 14, and an anchor bolt 15. The connecting layer 11 has a first anchor bolt hole 112 and a first anchor cable hole 111 for the anchor cable 40 to pass through. The flexible pad 12 is stacked on top of the connecting layer 11 and has a second anchor cable hole 121 opposite to the first anchor cable hole 111 and a second anchor bolt hole 122 opposite to the first anchor bolt hole 112. The side of the flexible pad 12 facing away from the connecting layer 11 is used for installation in the installation area 30 of an installation environment such as an inclined slope. Figure 2 and Figure 3 As shown, the prefabricated anchor block 13 is located on the side of the connecting layer 11 facing away from the flexible pad 12, and has a third anchor cable hole 131 opposite to the first anchor cable hole 111 and a third anchor bolt hole 132 opposite to the first anchor bolt hole 112. An anchor 14 is located on the prefabricated anchor block 13 and faces the third anchor cable hole 131; the anchor 14 is used for the anchor cable 40 to pass through. An anchor bolt 15 passes through the first anchor bolt hole 112 and the second anchor bolt hole 122, and is inserted into the third anchor bolt hole 132. The end of the anchor bolt 15 away from the prefabricated anchor block 13 is used to insert into the fourth anchor bolt hole 32 in the installation area 30, so that the prefabricated anchor block can be fixed to the installation area 30.

[0056] When the prefabricated anchor piers are installed on the installation area 30, the anchor rods 15 provide support and fixation for the prefabricated anchor piers 13. One end of the anchor cable 40 can be inserted into and fixed in the fourth anchor cable hole 31 opened on the installation area 30, and the other end passes through the second anchor cable hole 121, the first anchor cable hole 111 and the third anchor cable hole 131 in sequence before passing through the anchor 14 and being fixedly connected to the anchor 14. In this way, the load of the unstable rock mass on the surface of the slope can be transferred to the deep stable rock mass by applying prestress or bearing the tensile force generated by the deformation of the rock mass, thereby suppressing the risks of slope slippage and collapse.

[0057] The prefabricated anchor pier described above, with anchor bolt 15 providing effective support and restraint for the flexible pad 12, connecting layer 11, and prefabricated anchor pier 13, allows for stable installation of the prefabricated anchor pier 13 onto the installation area 30. The flexible pad 12 between the connecting layer 11 and the installation area 30 allows for soft contact with both, improving the continuity of force transmission between the connecting layer 11 and the installation area 30, reducing stress unevenness caused by poor initial leveling of the installation area 30, and enhancing the structural reliability of the prefabricated anchor pier. Therefore, the prefabricated anchor pier described above can reliably and stably achieve the installation of the prefabricated anchor pier 13 onto the installation area 30, eliminating the need for cast-in-place construction and improving construction efficiency.

[0058] In some embodiments, the flexible pad 12 includes, but is not limited to, any suitable component capable of providing soft contact, such as a rubber pad. The connecting layer 11 includes, but is not limited to, a concrete pad layer, etc.

[0059] Combination Figure 1 and Figure 4 As shown, in some embodiments, four anchor bolts 15 are provided, and four first anchor bolt holes 112, two second anchor bolt holes 122, three third anchor bolt holes 132, and four fourth anchor bolt holes 32 are provided. The four first anchor bolt holes 112 can be provided at the four corners of the connecting layer 11. The first anchor bolt holes 112, two second anchor bolt holes 122, three third anchor bolt holes 132, and four fourth anchor bolt holes 32 are arranged in a one-to-one correspondence. Each anchor bolt 15 passes through the corresponding first anchor bolt hole 112 and second anchor bolt hole 122, and is inserted into the corresponding third anchor bolt hole 132 and fourth anchor bolt hole 32. Providing four anchor bolts 15 can enhance the support and fixing effect of the anchor bolts 15 on the connecting layer 11, flexible pad 12, and prefabricated anchor pier 13, thereby improving the structural reliability of the prefabricated anchor pier.

[0060] Combination Figure 5 and Figure 6 As shown, in some embodiments, each anchor bolt 15 includes a first rod portion 151, a second rod portion 152, and a sleeve 153. The sleeve 153 is inserted into the first anchor bolt hole 112. The first rod portion 151 passes through a flexible pad 12 and a connecting layer 11 and is connected to the sleeve 153. One end of the first rod portion 151 away from the sleeve 153 is used to be inserted into the fourth anchor bolt hole 32. The second rod portion 152 is connected to the sleeve 153 and inserted into the third anchor bolt hole 132.

[0061] During the installation of the prefabricated anchor block, the first rod 151 is first inserted into the fourth anchor hole 32. Then, the flexible pad 12 and the connecting layer 11 are sequentially placed on the installation area 30, so that the first rod 151 passes through the second anchor hole 122 and the first anchor hole 112 in sequence. The sleeve 153 is inserted into the first anchor hole 112 to connect with the first rod 151, thus achieving a tight connection between the first rod 151, the flexible pad 12, and the connecting layer 11. Then, the second rod 152 is connected to the sleeve 153, and the prefabricated anchor block 13 is then placed on the connecting layer 11, so that the second rod 152 is inserted into the third anchor hole 132. It is evident that configuring the anchor rod 15 as a first rod part 151, a second rod part 152, and a sleeve 153 is beneficial for optimizing the installation process of the prefabricated anchor block, reducing installation difficulty and cost. At the same time, the sleeve 153 can also provide a limiting function for the connecting layer 11, improving the overall installation accuracy and reliability of the prefabricated anchor block.

[0062] Combination Figure 5 and Figure 7As shown, in some embodiments, the end of the anchor rod 15 away from the precast anchor block 13, i.e., the end of the first rod portion 151 away from the sleeve 153, is provided with a self-locking structure 154. At least a portion of the self-locking structure 154 can expand outward in a mirror image and abut against the inner wall of the fourth anchor bolt hole 32, thereby achieving a secure lock between the anchor rod 15 and the installation area 30. The self-locking structure 154 simplifies the installation process of the anchor rod 15 in the installation area 30 and improves installation reliability.

[0063] The specific configuration of the self-locking structure 154 is not limited, as long as it can achieve self-locking of the anchor rod 15 in the installation area 30. For example, in some embodiments, the self-locking structure 154 may include an expanding wedge-shaped body, a central guide shaft, and a reset limiting structure. The expanding wedge-shaped body may include a multi-lobed expandable structure, with the central guide shaft passing through the expanding wedge-shaped body and one end connected to the first rod portion 151, and the other end provided with a limiting structure to prevent the expanding wedge-shaped body from falling off. The reset limiting structure includes, but is not limited to, elastic reset components such as springs or limiting buckles. The reset limiting structure can limit the expanding wedge-shaped body, ensuring that the expanding wedge-shaped body only expands during rotational drive and can remain locked after expansion to prevent reverse loosening.

[0064] refer to Figure 1 and Figure 4 As shown, in some embodiments, the prefabricated anchor pier further includes a centerer 16, which passes through the first anchor cable hole 111 and the second anchor cable hole 121, and the outer wall of the centerer 16 abuts against the inner walls of the first anchor cable hole 111 and the second anchor cable hole 121. The centerer 16 provides radial restraint to the connecting layer 11 and the flexible pad 12, improving the centering of the first anchor cable hole 111 and the second anchor cable hole 121, thereby reducing the probability of force eccentricity of the anchor cable 40 on the prefabricated anchor pier and improving the structural reliability of the prefabricated anchor pier.

[0065] Furthermore, in some embodiments, the centering device 16 includes a main body 161 and a limiting part 162. The main body 161 has a first anchor cable hole 111 and a second anchor cable hole 121 passing through it. The outer wall of the main body 161 abuts against the inner walls of the first anchor cable hole 111 and the second anchor cable hole 121 to center and limit the connection layer 11 and the flexible pad 12. The limiting part 162 is connected to the end of the main body 161 away from the flexible pad 12 and is located on the side of the connection layer 11 facing away from the flexible pad 12. The limiting part 162 abuts against the side of the connection layer 11 facing away from the flexible pad 12. With this configuration, while the main body 161 centers and limits the connection layer 11 and the flexible pad 12, the limiting part 162 can also provide axial limitation for the connection layer 11 and the flexible pad 12, improving the tightness of the connection between the connection layer 11, the flexible pad 12 and the installation area 30, and improving the assembly accuracy and structural reliability of the prefabricated anchor block.

[0066] refer to Figure 3 and Figure 4 As shown, in some embodiments, the connecting layer 11 has a first tenon protrusion 113 protruding on the side facing the prefabricated anchor 13, and the prefabricated anchor 13 has a groove 133 on the side facing the connecting layer 11. At least a portion of the first tenon protrusion 113 is embedded in the groove 133, and the surface of the first tenon protrusion 113 can contact the inner wall of the groove 133. The engagement and limiting of the first tenon protrusion 113 and the groove 133 can improve the installation accuracy and reliability of the prefabricated anchor 13 on the connecting layer 11, and enhance the structural reliability of the assembled anchor.

[0067] In some embodiments, the connecting layer 11 has a second tenon protrusion 114 protruding on the side facing the flexible pad 12, which contacts the flexible pad 12. The provision of the second tenon protrusion 114 can improve the sufficiency of the connection between the connecting layer 11 and the flexible pad 12 and prevent the flexible pad 12 from shifting, which is beneficial to further improve the installation accuracy and structural reliability of the prefabricated anchor.

[0068] Please see again. Figure 1 and Figure 2 In some embodiments, the prefabricated anchor block further includes an anchor plate 17, which includes a connecting portion 171 and an mounting portion 172. A mounting groove 134 is recessed on the side of the prefabricated anchor block 13 facing away from the connecting layer 11. The connecting portion 171 is fixedly installed in the third anchor cable hole 131 by any applicable method such as threaded connection. The mounting portion 172 is connected to the end of the connecting portion 171 away from the connecting layer 11 and is embedded in the mounting groove 134. The periphery of the mounting portion 172 can abut against and limit the movement of the side wall of the mounting groove 134. The connecting portion 171 has a mounting hole 1721 communicating with the third anchor cable hole 131. An anchor 14 is disposed on the connecting portion 171 and opposite to the mounting hole 1721. Setting up the anchor plate 17 can improve the installation reliability of the anchor 14 on the precast anchor block 13, and at the same time provide positioning for the installation of the anchor 14, improve the centering of the anchor 14 relative to the third anchor hole 132, and effectively prevent the eccentric effect caused by improper installation of the anchor 14.

[0069] refer to Figure 8 and Figure 9 As shown, in some embodiments, this application also provides a locator 20, which is used to position the fourth anchor bolt hole 32 on the installation area 30 during the installation of the prefabricated anchor pier, thereby improving the positioning accuracy between the fourth anchor cable hole 31 and the fourth anchor bolt hole 32 on the installation area 30 and the anchor cable hole and anchor bolt hole on each component of the prefabricated anchor pier, realizing the initial positioning function of the prefabricated anchor pier 13, improving the installation accuracy and structural reliability of the prefabricated anchor pier 13, and at the same time improving the positioning and opening efficiency of the third anchor bolt hole 132.

[0070] In some embodiments, the locator 20 may include an anchor cable positioning part 21, an anchor rod positioning part 22, and a connecting rod 23 connecting the anchor cable positioning part 21 and the anchor rod positioning part 22. The connecting rod 23 is used to fix the relative positions of the anchor cable positioning part 21 and the anchor rod positioning part 22. An anchor cable positioning hole 211 is provided on the anchor cable positioning part 21, and an anchor rod positioning hole 221 is provided on the anchor rod positioning part 22. When installing the prefabricated anchor block, a fourth anchor cable hole 31 can be first opened in the installation area 30, and then the opening position of the fourth anchor rod hole 32 can be located by the locator 20. For example, the anchor cable positioning hole 211 of the anchor cable positioning part 21 is opposite to the fourth anchor cable hole 31, and the position on the installation area 30 opposite to the anchor rod positioning hole 221 on the anchor rod positioning part 22 is the opening position of the fourth anchor rod hole 32. There may be four anchor rod positioning holes 221, which can be designed according to the number and position of the fourth anchor rod holes 32.

[0071] Combination Figure 1 , Figure 3 and Figure 10 As shown, based on the prefabricated anchor block described in any of the above embodiments, this application also provides a construction method for a prefabricated anchor block, used to install the prefabricated anchor block as described in any of the above embodiments on the installation area 30. In some embodiments, the construction method for the prefabricated anchor block includes:

[0072] Step S110: Use any suitable equipment such as a drilling rig to open the fourth anchor cable hole 31 in the installation area 30.

[0073] In step S120, the anchor cable positioning part 21 is aligned with the fourth anchor cable hole 31, and the opening position of the fourth anchor bolt hole 32 is positioned by the anchor bolt positioning part 22.

[0074] In step S130, the fourth anchor hole 32 is drilled in the installation area 30 using equipment such as a pneumatic drill rig, according to the opening position located in step S120.

[0075] In step S140, the anchor rod 15 is inserted into the fourth anchor rod hole 32, and the self-locking structure 154 at the end of the anchor rod 15 expands to lock with the fourth anchor rod hole 32. In step S140, the first rod portion 151 can be inserted into the fourth anchor rod hole 32, and the self-locking structure 154 at the end of the first rod portion 151 expands.

[0076] In step S150, the flexible pad 12 and the connecting layer 11 are sequentially placed on the installation area 30, such that the anchor rod 15 passes through the second anchor rod hole 122 of the flexible pad 12 and the first anchor rod hole 112 of the connecting layer 11. In step S150, the first rod portion 151 passes through the second anchor rod hole 122 and the first anchor rod hole 112.

[0077] In step S160, a sleeve 153 is installed in the first anchor bolt hole 112, so that the sleeve 153 is connected to the first rod portion 151.

[0078] In step S170, a second rod portion 152 connected to the sleeve 153 is provided on the side of the connecting layer 11 facing away from the flexible pad 12.

[0079] In step S180, the prefabricated anchor block 13 is placed on the connecting layer 11, so that the anchor rod 15 is inserted into the third anchor rod hole 132 of the prefabricated anchor block 13. In step S180, the second rod portion 152 is inserted into the third anchor rod hole 132.

[0080] Before step S110, the surrounding rock mass at the location of the fourth anchor hole 31 can be preliminarily leveled using equipment such as an electric pick or a pneumatic pick to improve the installation stability of the prefabricated anchor. After step S130, the residue inside the fourth anchor hole 32 can be cleaned using equipment such as a blower. In step S180, a small crane can be used to transport the prefabricated anchor 13 to the connecting layer 11. At least a portion of the anchor rod 15 is made of materials including, but not limited to, reinforcing steel. After step S180, the construction method may further include sealing the third anchor hole 132 and the fourth anchor hole 32 with concrete to prevent corrosion of the reinforcing steel.

[0081] The structure, function, and effect of the components involved in each step of the above construction method can be found in the above description of prefabricated anchor blocks, and will not be repeated here.

[0082] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0083] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A prefabricated anchor block, characterized in that, include: The connecting layer is provided with a first anchor cable hole and a first anchor bolt hole; A flexible pad is stacked on top of the connecting layer and has a second anchor hole opposite to the first anchor hole and a second anchor hole opposite to the first anchor hole. The side of the flexible pad facing away from the connecting layer is used to be installed in the installation area. A prefabricated anchor block is provided on the side of the connecting layer facing away from the flexible pad, and has a third anchor hole opposite to the first anchor hole and a third anchor hole opposite to the first anchor hole. An anchorage, disposed on the precast anchor block and opposite to the third anchor cable hole, the anchorage being used for the anchor cable to pass through; and, An anchor rod passes through the first anchor rod hole and the second anchor rod hole, and is inserted into the third anchor rod hole. The end of the anchor rod away from the precast anchor block is used to be inserted into the fourth anchor rod hole in the installation area.

2. The prefabricated anchor pier according to claim 1, characterized in that, The anchor bolt includes a first rod portion, a second rod portion, and a sleeve. The sleeve is inserted into the first anchor bolt hole. The first rod portion passes through the flexible pad and the connecting layer and is connected to the sleeve. One end of the first rod portion away from the sleeve is used to be inserted into the fourth anchor bolt hole. The second rod portion is connected to the sleeve and inserted into the third anchor bolt hole.

3. The prefabricated anchor pier according to claim 1, characterized in that, The end of the anchor rod away from the precast anchor block is provided with a self-locking structure, at least a portion of which can expand radially outward to lock with the installation area.

4. The prefabricated anchor pier according to claim 1, characterized in that, The prefabricated anchor also includes a centering device, which passes through the first anchor hole and the second anchor hole, and the outer wall of the centering device abuts against the inner wall of the first anchor hole and the second anchor hole.

5. The prefabricated anchor pier according to claim 4, characterized in that, The centering device includes a main body and a limiting part. The main body passes through the first anchor cable hole and the second anchor cable hole, and the limiting part is connected to the main body and abuts against the side of the connecting layer opposite to the flexible pad.

6. The prefabricated anchor pier according to claim 1, characterized in that, The connecting layer has a first tenon protrusion on the side facing the precast anchor, and the precast anchor has a groove on the side facing the connecting layer, with at least a portion of the first tenon protrusion embedded in the groove.

7. The prefabricated anchor pier according to claim 1, characterized in that, The connecting layer has a second tenon protrusion on the side facing the flexible pad that contacts the flexible pad.

8. The prefabricated anchor block according to claim 1, characterized in that, The prefabricated anchor block also includes an anchor plate, which includes a connecting part and an installation part. The prefabricated anchor block has an installation groove recessed on the side facing away from the connecting layer. The connecting part is located in the third anchor cable hole. The installation part is connected to the connecting part and embedded in the installation groove. The connecting part has an installation hole communicating with the third anchor cable hole. The anchor is located on the connecting part and is opposite to the installation hole.

9. A construction method for a prefabricated anchor pier, characterized in that, The construction method using the prefabricated anchor block as described in any one of claims 1-8 includes: A fourth anchor cable hole is opened in the installation area; A locator is provided, the locator including an anchor cable locating part, an anchor bolt locating part, and a connecting rod connecting the anchor cable locating part and the anchor bolt locating part; The anchor positioning part is positioned so that it is opposite to the fourth anchor hole, and the opening position of the fourth anchor hole is positioned by the anchor positioning part. The fourth anchor hole is opened in the installation area; An anchor rod is inserted into the fourth anchor rod hole, causing the self-locking structure at the end of the anchor rod to expand and lock with the fourth anchor rod hole; The flexible pad and the connecting layer are sequentially arranged on the installation area, such that the anchor rod passes through the second anchor rod hole of the flexible pad and the first anchor rod hole of the connecting layer; The prefabricated anchor block is placed on the connecting layer, so that the anchor rod is inserted into the third anchor rod hole of the prefabricated anchor block.

10. The construction method according to claim 9, characterized in that, In the step of inserting the anchor rod into the fourth anchor rod hole, the first rod portion of the anchor rod is inserted into the fourth anchor rod hole; In the step of sequentially setting the flexible pad and the connecting layer on the installation area, the first rod portion passes through the second anchor hole and the first anchor hole; After the step of sequentially placing the flexible pad and the connecting layer on the installation area, the construction method further includes: A sleeve is provided in the first anchor bolt hole, so that the sleeve is connected to the first rod part; A second rod portion connected to the sleeve is provided on the side of the connecting layer opposite to the flexible pad; In the step of setting the prefabricated anchor block on the connecting layer, the second rod is inserted into the third anchor bolt hole.

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