Prefabricated anchorage pier slope retaining structure and construction method thereof

Abstract

The invention belongs to the field of supporting and retaining structures, and particularly relates to a prefabricated anchorage pier slope supporting and retaining structure and a construction method thereof.The prefabricated anchorage pier slope supporting and retaining structure comprises an anchorage pier assembly, and a plurality of connecting pieces are installed on the anchorage pier assembly; the fixing assembly is mounted on the anchorage pier assembly; the first locking pieces are symmetrically mounted on the anchorage pier assembly; wherein the fixing assembly comprises a second locking piece, an anchor rod a and an anchor rod b, and a plurality of multifunctional holes are formed in the connecting piece. The anchor rod a drives the anchor rod b to rotate and extend into a side slope, first stress application is carried out, the anchor rod a is primarily fixed through the first locking piece after the first stress application is completed, the first locking piece is used for preventing the bolt from loosening continuously to be disengaged when the ground vibrates, and then the second locking piece is in threaded connection with the anchor rod a; and after the second locking piece is screwed down, the tension stress of the anchor rod a is maintained, and compared with a traditional pouring type anchor rod, the second locking piece is adopted for fixing the anchor rod more quickly.

Description

Technical Field

[0001] The invention belongs to the field of retaining structures, and particularly relates to a precast anchor pier slope retaining structure and a construction method thereof. Background Art

[0002] Slope support refers to the retaining, reinforcement and protection measures taken for slopes to ensure the safety of slopes and their environment.

[0003] The traditional slope retaining structure has the following problems:

[0004] 1. Most of the support structures are integrally cast, with a long construction period, slow concrete setting, mostly using mechanical hoisting during installation, increasing costs, and being difficult to flexibly adapt to different slope forms. Moreover, excavation and support require repeated construction many times, and the process is complex.

[0005] 2. Dependence on on-site casting of anchor piers and connecting beams, requiring steel bar binding, formwork support and curing, slow construction speed, long concrete setting cycle, difficult to meet the timeliness requirements of slope emergency rescue, and the connection method between anchor piers is single, unable to effectively adapt to terrain changes. Summary of the Invention

[0006] In order to overcome the deficiencies of the prior art, the invention provides a precast anchor pier slope retaining structure and a construction method thereof, which well solve the problems that most of the retaining structures are integrally cast, mostly using mechanical hoisting during installation, increasing costs, being difficult to flexibly adapt to different slope forms, excavation and support requiring repeated construction many times, complex process, dependence on on-site casting of anchor piers and connecting beams, requiring steel bar binding, formwork support and curing, long construction period, difficult to meet the timeliness requirements of slope emergency rescue, and the single connection method between anchor piers.

[0007] One embodiment of the invention provides a precast anchor pier slope retaining structure, including:

[0008] An anchor pier assembly, on which a plurality of connecting pieces are installed;

[0009] A fixing assembly, which is installed on the anchor pier assembly;

[0010] A first locking member, which is symmetrically installed on the anchor pier assembly;

[0011] Wherein, the fixing assembly includes a second locking member, anchor bolt a and anchor bolt b;

[0012] The second locking member is located on one side of the anchor pier assembly. One end of the anchor rod a penetrates through the anchor pier assembly and is threadedly connected to the second locking member. The anchor rod b is rigidly connected to the end of the anchor rod a away from the first locking member. The anchor rod b is provided with a first thread portion and a second thread portion, and the pitch of the first thread portion is greater than the pitch of the second thread portion;

[0013] A number of multi-functional holes are formed in the connecting member, and the connecting member is used to connect the anchor pier assembly with other anchor pier assemblies.

[0014] For a precast anchor pier slope retaining structure of the present invention, the anchor pier assembly is installed in the slope groove by manual or external tools. Near the position of the installation hole of the anchor pier assembly, the anchor rod a is rotated by a tool, and the anchor rod a drives the anchor rod b to rotate and extend into the slope, so as to apply the first stress. After the application is completed, the anchor rod a is initially fixed by the first locking member. (The first locking member is to prevent the bolt from continuously loosening and falling out when the ground vibrates after the second locking member locks the anchor rod a. The first locking member is equivalent to a protection device.) Then, the second locking member is threadedly connected to the anchor rod a, and after the second locking member is tightened, the tensile stress of the anchor rod a is maintained. (Compared with the traditional cast-in-place fixed anchor rod, the use of the second locking member can fix more quickly, and can speed up the installation of the anchor pier in the emergency rescue environment.) After that, the next-level excavation of the slope is carried out, and a connecting member is installed between every two anchor pier assemblies. If a connecting member that needs to be poured is selected, after connection, it is poured and fixed to form a connecting beam. If a connecting member that does not need to be poured is selected, the connecting member is fixed after the connection is completed. (The connecting member can be a nylon cable tie, a steel groove to be poured, a steel bar or other components that can connect different anchor piers. The connecting member is installed through the multi-functional hole, and the set multi-functional hole realizes the installation of various structures, such as welding, threaded fixing, etc., and is not limited to one here.) After the fixing is completed, the second stress application is carried out on the anchor rod a, and the above-mentioned processes of excavation, grooving and support are repeated until the construction reaches the last slope toe, and the support and reinforcement of the slope are completed.

[0015] In one embodiment, the first locking member includes a pressing block and a sliding block;

[0016] The pressing block is arranged on the anchor pier assembly, and a first inclined surface is arranged at the bottom of the pressing block;

[0017] The sliding block is arranged in the anchor pier assembly, and a second inclined surface is arranged on one side of the sliding block.

[0018] In one embodiment, the first inclined surface is in contact and cooperation with the second inclined surface, and an anti-slip sheet is arranged on the side of the sliding block away from the inclined surface.

[0019] In one embodiment, the anchor pier assembly is provided with activity spaces that are equal in number to the extrusion blocks, and the anchor pier assembly is provided with sliding spaces that are equal in number to the sliding blocks. The sliding spaces communicate with the activity spaces;

[0020] The connecting member is in the shape of an n.

[0021] In one embodiment, the anchor pier assembly is provided with mounting holes that are adapted to the size of the anchor bolt a. The mounting holes communicate with the activity spaces.

[0022] In one embodiment, the anti-slip sheet is arc-shaped, and the arc center of the anti-slip sheet coincides with the central axis of the mounting hole.

[0023] In one embodiment, the first locking member includes a first state and a second state.

[0024] When the first locking member is in the first state, the extrusion block is not extruded, and the sliding block is located in the sliding space. At this time, the extrusion block and the sliding block are fixed to the anchor pier assembly in an L shape.

[0025] When the first locking member is in the second state, the extrusion block is extruded, and the first inclined surface extrudes the second inclined surface. At this time, the extrusion block is movably connected to the extrusion space, and the sliding block is movably connected to the sliding space.

[0026] One embodiment of the present invention provides a construction method for a precast anchor pier slope retaining structure, including:

[0027] The precast anchor pier slope retaining structure according to any one of the above embodiments; and

[0028] The construction steps of the retaining structure:

[0029] Install the anchor pier assembly in the slope groove. Near the position of the mounting hole of the anchor pier assembly, rotate the anchor bolt a with a tool. The anchor bolt a drives the anchor bolt b to rotate and extend into the slope, thereby applying the first stress. After the application is completed, initially fix the anchor bolt a with the first locking member, and then threadedly connect the second locking member with the anchor bolt a. After tightening the second locking member, maintain the tensile stress of the anchor bolt a. Then, conduct the next-level excavation of the slope, install the connecting member between every two anchor pier assemblies. If a connecting member that needs to be poured is selected, pour and fix it to form a connecting beam after connection. If a connecting member that does not need to be poured is selected, the connecting member is fixed after completion of the connection. After the fixation is completed, apply the secondary stress to the anchor bolt a, and repeat the above processes of excavation, grooving, and support until the construction reaches the last slope toe to complete the support and reinforcement of the slope.

[0030] The precast anchor pier slope retaining structure provided by the above technical solution has the following beneficial effects:

[0031] 1. Through the precast anchor pier assembly and modular design, the cumbersome processes of traditional on-site casting, such as formwork support and curing, are avoided. With the cooperation of threaded locking parts to quickly fix the anchor rods, the construction period and the concrete hardening time are significantly shortened, which is especially suitable for emergency projects.

[0032] 2. The multi-functional holes on the connecting parts support various connection methods, such as nylon cable ties, U-shaped steel channels, steel bar welding, etc. Adaptable solutions can be selected according to the slope form and construction conditions, enhancing the adaptability to different terrains.

[0033] 3. The first locking part adopts an inclined plane extrusion mechanism. Through the friction locking between the anti-slip sheet and the anchor rod, the loosening of the anchor rod caused by the vibration induced by external loads is effectively prevented. The double-pitch thread design of anchor rod b optimizes the stress distribution and improves the anchoring effect.

[0034] 4. The construction method adopts a process of hierarchical excavation and step-by-step support, combined with the secondary stress application technology, reducing the slope disturbance, realizing the dynamic adjustment of the support strength, and ensuring the construction safety.

[0035] 5. The precast components reduce the on-site material waste and the dependence on large machinery. The connecting parts can be reused and support the no-casting scheme, reducing the comprehensive construction cost.

[0036] 6. The connecting parts are not only used for the reinforcement between the anchor piers, but also can be used to hang the protective net or cooperate with other structures, expanding the functional application scenarios of the retaining system. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0038] Figure 1 is the structural schematic diagram of the present invention;

[0039] Figure 2 is the partial structural schematic diagram of the present invention;

[0040] Figure 3 is the partial sectional structural schematic diagram of the present invention;

[0041] Figure 4 is the sectional structural schematic diagram of the present invention after the extrusion block is installed;

[0042] Figure 5Schematic diagram of the structure connecting the first inclined plane and the second inclined plane of the connection module of the present invention;

[0043] Figure 6 Schematic diagram of the connection of two anchor pier components Figure 1 ;

[0044] Figure 7 Schematic diagram of the connection of two anchor pier components Figure 2 ;

[0045] Figure 8 Schematic diagram of the connection of two anchor pier components Figure 3 ;

[0046] Figure 9 Schematic diagram of the connection of two anchor pier components Figure 4 .

[0047] Descriptions of the markings in the figure are as follows:

[0048] 100. Anchor pier component;

[0049] 110. Connector; 111. Multifunctional hole;

[0050] 120. Activity space;

[0051] 130. Sliding space;

[0052] 140. Installation hole;

[0053] 200. Fixed component;

[0054] 300. First locking piece;

[0055] 310. Extrusion block; 311. First inclined plane;

[0056] 320. Sliding block; 321. Second inclined plane; 322. Anti-slip piece;

[0057] 210. Second locking piece; 220. Anchor rod a;

[0058] 230. Anchor rod b; 231. First threaded part; 232. Second threaded part;

[0059] 400. Nylon cable tie;

[0060] 500. U-shaped steel trough;

[0061] 600. Steel bar. Detailed implementation method

[0062] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as limiting the present invention.

[0063] In the description of the present invention, it should be understood that with regard to the orientation description, such as up, down, front, back, left, right, etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

[0064] In the description of the present invention, the meaning of "several" is one or more, the meaning of "multiple" is two or more, "greater than", "less than", "exceeding", etc. are understood not to include the original number, and "above", "below", "within", etc. are understood to include the original number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and should not be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence relationship of the indicated technical features.

[0065] In the description of the present invention, unless otherwise clearly defined, terms such as "set", "install", "connect", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0066] Combined with Figures 1 to 9 As shown, one embodiment of the present invention provides a precast anchor pier slope retaining structure, including:

[0067] An anchor pier assembly 100, on which several connectors 110 are installed;

[0068] A fixing assembly 200, which is installed on the anchor pier assembly 100;

[0069] A first locking member 300, which is symmetrically installed on the anchor pier assembly 100;

[0070] Among them, the fixing assembly 200 includes a second locking member 210, a bolt a 220 and a bolt b 230;

[0071] The second locking member 210 is located on one side of the anchor pier assembly 100. One end of the anchor rod a 220 penetrates through the anchor pier assembly 100 and is threadedly connected to the second locking member 210. The anchor rod b 230 is rigidly connected to the end of the anchor rod a 220 away from the first locking member 300. The anchor rod b 230 is provided with a first thread portion 231 and a second thread portion 232, and the pitch of the first thread portion 231 is greater than the pitch of the second thread portion 232.

[0072] A plurality of multifunctional holes 111 are formed in the connecting member 110, and the connecting member 110 is used to connect the anchor pier assembly 100 to other anchor pier assemblies 100.

[0073] For a precast anchor pier slope retaining structure of the present invention, the anchor pier assembly 100 is installed in a slope groove by manual or external tools. Near the installation hole position of the anchor pier assembly 100, the anchor rod a 220 is rotated by a tool, and the anchor rod a 220 drives the anchor rod b 230 to rotate and extend into the slope, so as to apply the first stress. After the application is completed, the anchor rod a 220 is initially fixed by the first locking member 300. (The first locking member 300 is to prevent the bolt from continuously loosening and coming out during ground vibration after the second locking member 210 locks the anchor rod a 220. The first locking member 300 is equivalent to a protection device.) Then, the second locking member 210 is threadedly connected to the anchor rod a 220. After the second locking member 210 is tightened, the tensile stress of the prestressed anchor rod a 220 is maintained. (Compared with the traditional cast-in-place fixed anchor rod, the use of the second locking member 210 can fix more quickly and speed up the installation of the anchor pier in an emergency rescue environment.) After that, the next-level excavation of the slope is carried out, and the connecting member 110 is installed between every two anchor pier assemblies 100. If the selected connecting member 110 needs to be cast, it is cast and fixed to form a connecting beam after connection. If the connecting member 110 does not need to be cast, the connecting member 110 is fixed after the connection is completed. (The connecting member 110 can be a nylon cable tie 400, a steel groove to be cast, a steel bar, or other components that can connect different anchor piers. The connecting member 110 is installed through the multifunctional holes 111. The provided multifunctional holes 111 enable the installation of various structures, such as welding, threaded fixing, etc. There is no unique limitation here.) After the fixing is completed, the second stress is applied to the anchor rod a 220, and the above-mentioned processes of excavation, grooving, and support are repeated until the construction reaches the last slope toe, and the support and reinforcement of the slope are completed.

[0074] It should be noted that as Figure 6As shown, both ends of the nylon cable tie 400 can be fixed to the multi-functional hole 111 through a buckle. Existing nylon cable ties 400 are all provided with buckles, or bolts can also be used to penetrate the cable tie for fixation, which is not uniquely defined here. After fixation, tighten the cable tie to complete the connection of the two anchor piers;

[0075] If a steel channel is used, such as Figure 7 As shown, select the U-shaped steel channel 500, fix the steel channel to the connector 110 through bolts and the multi-functional hole 111, or it can also be fixed to the connector 110 by welding. The notch of the steel channel faces upward. After fixation, directly pour into the notch. The overall operation is convenient and fast;

[0076] If reinforcing bars 600 are used, such as Figure 8 As shown, the reinforcing bars 600 can be conveniently welded to the connector 110 through the multi-functional hole 111 to connect the two anchor piers. Moreover, the reinforcing bars 600 can be welded after the steel channel is installed (as Figure 9 shown), which can be secondary reinforcement. The above connection methods mainly complete the installation through the multi-functional hole 111, thus realizing multiple connection methods. During emergency rescue, a fast installation method can be used, or other components installed through the multi-functional hole 111 can also be used to fix every two anchor piers, which is not overly limited here.

[0077] Furthermore, a backing plate or washer needs to be installed before installing the second locking member 210 to prevent the second locking member 210 from loosening. This is hereby explained.

[0078] Even further, a protective net can be hung on the multi-functional hole 111, and the connector 110 can be installed during the pouring of the anchor pier assembly 100, or it can also be installed on the anchor pier assembly 100 in a plug-in combination manner, which is not uniquely defined here.

[0079] In one embodiment, the first locking member 300 includes a pressing block 310 and a sliding block 320;

[0080] The pressing block 310 is arranged on the anchor pier assembly 100, and a first inclined surface 311 is arranged at the bottom of the pressing block 310;

[0081] The sliding block 320 is arranged inside the anchor pier assembly 100, and a second inclined surface 321 is arranged on one side of the sliding block 320;

[0082] The first inclined surface 311 is in contact and cooperation with the second inclined surface 321, and an anti-slip sheet 322 is arranged on the side of the sliding block 320 away from the inclined surface;

[0083] The anchor pier assembly 100 is provided with activity spaces 120 having the same number as the extrusion blocks 310, and the anchor pier assembly 100 is provided with sliding spaces 130 having the same number as the sliding blocks 320. The sliding spaces 130 communicate with the activity spaces 120;

[0084] The connecting member 110 is in the shape of an n.

[0085] The anchor pier assembly 100 is provided with mounting holes 140 adapted to the size of the anchor rod a 220, and the mounting holes 140 communicate with the activity spaces 120;

[0086] The anti-slip piece 322 is arc-shaped, and the arc center of the anti-slip piece 322 coincides with the central axis of the mounting hole 140;

[0087] The first locking member 300 includes a first state and a second state.

[0088] In one embodiment, when the first locking member 300 is in the first state, the extrusion block 310 is not extruded, and the sliding block 320 is located in the sliding space 130. At this time, the extrusion block 310 and the sliding block 320 are fixedly arranged on the anchor pier assembly 100 in an L shape;

[0089] When the first locking member 300 is in the second state, the extrusion block 310 is extruded, and the first inclined surface 311 extrudes the second inclined surface 321. At this time, the extrusion block 310 is movably connected to the extrusion space, and the sliding block 320 is movably connected to the sliding space 130.

[0090] In this embodiment, the extrusion block 310 is pushed by an external pusher or other external force. After the extrusion block 310 is pushed, the first inclined surface 311 extrudes the second inclined surface 321, thereby driving the sliding block 320 to move in the sliding space 130. Finally, the sliding block 320 drives the anti-slip piece 322 to be extruded against the anchor rod. The anti-slip piece 322 is a soft structure or other structures for increasing friction. When the anti-slip piece 322 is a soft structure, one side of the anti-slip piece 322 will be extruded against the outer wall of the anchor rod a 220, thereby better preventing the second locking member 210 from loosening.

[0091] It should be noted that the soft structure can well cooperate with the threads on the anchor rod a 220, thereby playing a role in stabilizing the anchor rod a 220, and the two extrusion blocks 310 are respectively extruded against the anchor rod a 220.

[0092] One embodiment of the present invention provides a construction method for a precast anchor pier slope retaining structure, including:

[0093] The precast anchor pier slope retaining structure according to any one of the above embodiments; and

[0094] Construction steps of the retaining structure:

[0095] Install the anchor pier assembly 100 in the slope groove. Near the position of the installation hole of the anchor pier assembly 100, rotate the anchor bolt a 220 through a tool. The anchor bolt a 220 drives the anchor bolt b 230 to rotate and extend into the slope, so as to apply the first stress. After the application is completed, initially fix the anchor bolt a 220 through the first locking member 300. Then, thread-connect the second locking member 210 with the anchor bolt a 220. After tightening the second locking member 210, maintain the tensile stress of the prestressed anchor bolt a 220. After that, conduct the next-level excavation of the slope, and install the connecting member 110 between every two anchor pier assemblies 100. If the selected connecting member 110 needs to be poured, conduct pouring and fixing after connection to form a connecting beam. If the connecting member 110 does not need to be poured, the connection of the connecting member 110 is completed and the fixing is completed. After the fixing is completed, apply the secondary stress to the anchor bolt a 220. Repeat the above processes of excavation, grooving and support until the construction reaches the last toe of the slope to complete the support and reinforcement of the slope.

[0096] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the inventive concept of the present invention by using the paper parts and the content of the drawings of the present invention, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. A precast anchor pier slope retaining structure, characterized in that, Including: An anchor pier assembly (100) with a plurality of connecting members (110) installed thereon; a fixing assembly (200) installed on the anchor pier assembly (100); A first locking member (300) symmetrically installed on the anchor pier assembly (100); Wherein, the fixing assembly (200) includes a second locking member (210), an anchor rod a (220) and an anchor rod b (230); The second locking member (210) is located on one side of the anchor pier assembly (100). One end of the anchor rod a (220) penetrates the anchor pier assembly (100) and is threadedly connected to the second locking member (210). The anchor rod b (230) is rigidly connected to the end of the anchor rod a (220) away from the first locking member (300). The anchor rod b (230) is provided with a first thread portion (231) and a second thread portion (232), and the pitch of the first thread portion (231) is greater than the pitch of the second thread portion (232); A plurality of multi-functional holes (111) are formed in the connecting member (110), and the connecting member (110) is used to connect the anchor pier assembly (100) with other anchor pier assemblies (100).

2. The precast anchor pier slope retaining structure according to claim 1, characterized in that, The first locking member (300) includes a pressing block (310) and a sliding block (320); The pressing block (310) is arranged on the anchor pier assembly (100), and a first inclined surface (311) is arranged at the bottom of the pressing block (310); The sliding block (320) is arranged in the anchor pier assembly (100), and a second inclined surface (321) is arranged on one side of the sliding block (320).

3. The precast anchor pier slope retaining structure according to claim 2, characterized in that, The first inclined surface (311) is in contact and cooperation with the second inclined surface (321), and an anti-slip sheet (322) is arranged on the side of the sliding block (320) away from the inclined surface.

4. The precast anchor pier slope retaining structure according to claim 3, characterized in that, The anchor pier assembly (100) is provided with activity spaces (120) having the same number as the pressing blocks (310). Sliding spaces (130) having the same number as the sliding blocks (320) are arranged in the anchor pier assembly (100), and the sliding spaces (130) are communicated with the activity spaces (120); The shape of the connecting member (110) is an n-shape.

5. The precast anchor pier slope retaining structure according to claim 4, characterized in that, The anchor pier assembly (100) is provided with a mounting hole (140) adapted to the size of the anchor rod a (220), and the mounting hole (140) is communicated with the activity space (120).

6. The precast anchor pier slope retaining structure according to claim 5, characterized in that, The anti-slip sheet (322) is arc-shaped, and the arc center of the anti-slip sheet (322) coincides with the central axis of the mounting hole (140).

7. The precast anchor pier slope retaining structure according to claim 4, characterized in that, The first locking member (300) includes a first state and a second state.

8. The precast anchor pier slope retaining structure according to claim 7, characterized in that, When the first locking member (300) is in the first state, the pressing block (310) is not pressed, and the sliding block (320) is located in the sliding space (130). At this time, the pressing block (310) and the sliding block (320) are fixed to the anchor pier assembly (100) in an L-shape.

9. The precast anchor pier slope retaining structure according to claim 7, wherein, When the first locking member (300) is in the second state, the extrusion block (310) is extruded, and the first inclined surface (311) extrudes the second inclined surface (321). At this time, the extrusion block (310) is movably connected to the extrusion space, and the sliding block (320) is movably connected to the sliding space (130).

10. A construction method for a precast anchor pier slope retaining structure, characterized in that Comprising: The precast anchor pier slope retaining structure according to any one of claims 1-9; And The construction steps of the retaining structure: Install the anchor pier assembly (100) in the slope groove. At the installation hole position of the anchor pier assembly (100), rotate the anchor rod a (220) through a tool. The anchor rod a (220) drives the anchor rod b (230) to rotate and extend into the slope, so as to apply the first stress. After the application is completed, the first locking member (300) is used to initially fix the anchor rod a (220). Then, the second locking member (210) is threadedly connected to the anchor rod a (220). After the second locking member (210) is tightened, the tensile stress of the prestressed anchor rod a (220) is maintained. After that, the slope is excavated to the next level, and the connecting member (110) is installed between every two anchor pier assemblies (100). If the connecting member (110) that needs to be poured is selected, it is poured and fixed after connection to form a connecting beam. If the connecting member (110) that does not need to be poured is selected, the connecting member (110) is fixed after the connection is completed. After the fixation is completed, the second stress is applied to the anchor rod a (220). Repeat the above processes of excavation, grooving and support until the construction reaches the last slope toe to complete the support and reinforcement of the slope.

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