Recyclable precast concrete retaining wall

Abstract

The utility model relates to the technical field of slope protection, in particular to a recyclable prefabricated concrete retaining wall which comprises a plurality of concrete modules, and the adjacent concrete modules can be mutually spliced. The concrete module comprises a base and at least two stand column units, the stand column units are detachably installed on the base in the length direction of the base, and every two adjacent stand column units are arranged in a spaced mode. The prefabricated concrete plate is arranged between the two stand column units, and the two ends of the prefabricated concrete plate can be clamped with the two stand column units; the stand column units are arranged on the base, the supporting pieces are arranged on one side or two sides of the stand column units in the width direction of the base, one ends of the supporting pieces are connected with the stand column units, and the other ends of the supporting pieces are connected with the base; the technical problem that an existing retaining wall is difficult to disassemble, cannot be repeatedly used and is difficult to adapt to a dynamic construction scene is solved.

Description

Technical Field

[0001] This utility model relates to the field of slope protection technology, specifically to a recyclable precast concrete retaining wall. Background Technology

[0002] Retaining walls, as crucial structures supporting roadbed fill or hillside soil and preventing soil deformation and instability, directly impact the efficiency and sustainability of civil engineering through technological advancements. Traditional retaining walls primarily employ cast-in-place concrete construction, which, while offering high structural strength, suffers from long construction cycles and difficulty in demolition and reuse. Furthermore, the demolition of cast-in-place structures requires mechanical crushing, generating substantial amounts of non-recyclable construction waste, leading to material waste and increased construction costs. This creates a structural contradiction with carbon neutrality goals and contradicts green building principles. With increasing demands for resource recycling and construction efficiency in civil engineering, cast-in-place concrete retaining walls are no longer sufficient to meet the needs of various scenarios, such as temporary support and foundation pit retaining walls. Their inability to achieve rapid deployment and adjustment through standardized prefabrication and flexible assembly limits their application potential in dynamic construction environments.

[0003] Therefore, in view of this, the inventors proposed a recyclable precast concrete retaining wall to solve the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this invention is to provide a recyclable precast concrete retaining wall to solve the technical problem that existing retaining walls are not reusable, making them difficult to adapt to dynamic construction scenarios.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A recyclable precast concrete retaining wall includes multiple concrete modules, adjacent concrete modules can be spliced ​​together.

[0007] The concrete module includes a base and at least two column units. Along the length of the base, the column units are detachably mounted on the base, and adjacent column units are spaced apart.

[0008] A precast concrete slab is disposed between the two column units, and both ends of the precast concrete slab can be engaged with the two column units.

[0009] It also includes a support member, which is disposed on one or both sides of the column unit along the width direction of the base. One end of the support member is connected to the column unit, and the other end of the support member is connected to the base.

[0010] According to the above technical solution, the retaining wall is composed of multiple interlocking concrete modules. Each module includes a base and at least two column units. The base serves as the foundation, upon which the column units are detachably installed, with adjacent column units spaced apart to provide installation space for precast concrete slabs. The precast concrete slabs are placed between two column units, their ends engaging with the column units to form a continuous retaining surface. Furthermore, the retaining wall includes support members, positioned along the width of the base on one or both sides of the column units, one end connected to the column unit and the other to the base, providing additional stability to the column units and preventing tilting or collapse. During construction, each component can be prefabricated, requiring only simple assembly and connection on-site, significantly shortening the construction cycle. When the retaining wall needs to be dismantled or adjusted, each component can be easily disassembled for transportation and reuse, reducing material waste and construction costs. This modular design allows the retaining wall to adapt to different engineering scenarios and needs, improving construction efficiency, while its recyclable nature aligns with the concepts of green building and sustainable development.

[0011] Furthermore, along the length direction of the base, one end of the base is provided with a limiting protrusion, and the other end of the base is provided with a limiting groove, wherein the limiting protrusion of the base is adapted to the limiting groove of the adjacent base.

[0012] According to the above technical solution, one end of the base is provided with a limiting protrusion and the other end is provided with a limiting groove. Adjacent bases are spliced ​​together by matching the limiting protrusion and the limiting groove to ensure precise docking between the bases, forming a continuous and stable foundation structure, effectively preventing displacement, enhancing the overall stability of the retaining wall, and the splicing process is simple and quick, improving construction efficiency, while ensuring the integrity of the structure and improving the overturning resistance.

[0013] Furthermore, the column unit includes multiple column members, each of which is detachably connected.

[0014] Furthermore, the column component includes a column frame and a column rod, wherein the column frame and the column rod are fixedly connected;

[0015] The column frame is provided with a first slot, and the column rod can be inserted into the first slot of the adjacent column frame;

[0016] The base has a second slot, into which the column rod can be inserted.

[0017] According to the above technical solution, the column unit adopts a modular, layered design, consisting of multiple independent column components that are vertically assembled through a plug-in structure. Each column component is rigidly connected by a column frame and a column rod. During installation, the column rod of the lower-layer column component is vertically inserted into the first slot of the adjacent upper-layer column frame, forming a self-locking plug-in structure to achieve the longitudinal extension of the column unit. Simultaneously, a pre-set second slot on the base matches the bottom end of the column rod; the column unit is installed by inserting the column rod into the second slot of the base. The modular structure allows the column height to be flexibly adjusted according to project requirements, and individual column components can be replaced when damaged. Combined with the detachable connection method, it enables rapid disassembly and reuse of all components, significantly improving material turnover efficiency and reducing the total life cycle cost.

[0018] Furthermore, two third slots are symmetrically provided on the column frame, and engaging parts are formed on both sides of the precast concrete slab, which can be engaged into the third slots.

[0019] According to the above technical solution, two symmetrically arranged third slots on the column frame and the engaging parts on both sides of the precast concrete slab form a transverse interlocking structure. During installation, the engaging parts of the precast concrete slab are pushed into the third slots of the column frame, and the side walls of the third slots provide vertical constraint to the engaging parts, preventing lateral displacement or detachment of the precast concrete slab. This mortise and tenon connection method requires no additional fasteners and achieves rapid assembly through mechanical interlocking. When disassembly is required, the interlocking can be released by pushing and pulling in the opposite direction, achieving non-destructive separation of components and facilitating the recycling of modular components.

[0020] Furthermore, a retaining strip is formed on the top of the precast concrete slab, and a retaining groove is formed on the bottom of the precast concrete slab, so that the retaining strip of the precast concrete slab can be inserted into the retaining groove of the adjacent precast concrete slab.

[0021] According to the above technical solution, the top locking strip and bottom locking groove of the precast concrete slab form a vertical interlocking structure. During installation, the locking strip of the upper precast concrete slab is inserted into the locking groove of the lower precast concrete slab from top to bottom, forming a mortise and tenon connection. This design restricts the vertical displacement and horizontal misalignment of adjacent slabs through mechanical interlocking, ensuring that a continuous load-bearing surface is formed after multiple layers of precast concrete slabs are stacked. When disassembly is required, the interlocking can be released by vertical lifting, realizing the rapid separation and reuse of modular components.

[0022] Furthermore, a limiting block is provided on the precast concrete slab, the limiting block is provided with a first limiting hole, and the base is provided with a second limiting hole;

[0023] When the precast concrete slabs are stacked together, each of the first limiting holes is coaxially corresponding;

[0024] It also includes a limiting rod, which passes through each of the first limiting holes, and the bottom of the limiting rod is inserted into the second limiting hole.

[0025] According to the above technical solution, the limiting rod achieves vertical constraint through the first limiting hole penetrating the stacked precast concrete slabs. When multiple layers of precast concrete slabs are stacked, the first limiting holes of each slab's limiting block automatically align to form a continuous channel. At this time, the limiting rod is vertically inserted into the channel until its bottom is embedded in the second limiting hole of the base. This design establishes a vertical force transmission path through rigid rods, locking each layer of precast concrete slabs into a whole, effectively resisting interlayer displacement caused by horizontal earth pressure. The precise fit between the limiting rod and the first limiting hole also restricts the out-of-plane displacement of the slabs. Combined with the lateral constraint of the clip-slot system, a three-dimensional spatial positioning system is formed, ensuring the stability of the retaining wall structure under dynamic loads. During disassembly, the interlayer connection can be released by pulling out the limiting rod, realizing the rapid separation of modular components.

[0026] Furthermore, the support member is a support rod, one end of which is connected to the column member, and the other end of which is connected to the base.

[0027] Furthermore, the column is provided with a first connecting seat, the base is provided with a second connecting seat, one end of the support rod is provided with a first pin between it and the first connecting seat, and the other end of the support rod is provided with a second pin between it and the second connecting seat.

[0028] According to the above technical solution, the support rod constructs a mechanically stable triangular support system through a double-pin connection mechanism. The first connecting seat of the column and the second connecting seat of the base serve as fixed fulcrums, and the two ends of the support rod are quickly hinged through the first and second pins, respectively. When earth pressure acts on the retaining wall, the support rod converts the horizontal thrust borne by the column unit into a vertical component force, which is transmitted to the base through the pin connection point, forming a self-balancing force system. The pin connection method ensures both rigid constraint of the structure under stress and enables tool-less quick assembly and disassembly. This design prevents axial displacement of the support rod through mechanical limiting, while retaining the recyclability of the modular system, allowing the support structure to be flexibly adjusted during construction and components to be quickly replaced during maintenance.

[0029] Furthermore, the base has a trapezoidal cross-section.

[0030] According to the above technical solution, the trapezoidal cross-section of the base enhances structural stability through geometric optimization. Its wedge-shaped form, narrower at the top and wider at the bottom, lowers the center of gravity and increases the contact area with the foundation, effectively dispersing vertical loads and improving overturning resistance. The sloping sides of the trapezoid form a natural friction angle with the soil, enhancing anti-slip performance. Simultaneously, the trapezoidal structure generates a wedging effect on earth pressure, converting horizontal thrust into a vertically downward component, which is then transmitted to the foundation through the base. This design ensures structural stability while adapting to complex terrain through the stacking of modular trapezoidal units, enabling rapid construction and structural optimization.

[0031] The beneficial effects of this utility model are:

[0032] This invention achieves efficient construction and recycling of retaining wall systems through modular design and detachable connection technology. Each concrete module is produced using prefabricated components in a standardized manner. Limiting protrusions and grooves enable rapid and precise docking of the base. Combined with the slot-locking structure between the column units and the prefabricated concrete slabs, a tool-free assembly system is formed. This modular architecture significantly shortens the on-site construction cycle and is particularly suitable for rapid deployment in temporary support or dynamic construction scenarios. When project requirements change, all components can be disassembled without damage by releasing the pin connections and limiting rod constraints, achieving full life-cycle recycling of materials, significantly reducing resource consumption and construction costs, and perfectly aligning with the concept of green construction.

[0033] This invention enhances anti-slip capability by increasing the base contact area through a trapezoidal base design. The triangular support system formed by the column unit and the support rod creates a self-balancing force mechanism. Simultaneously, the limiting rod achieves constraint through the first limiting hole penetrating the stacked precast concrete slabs. When multiple layers of precast concrete slabs are stacked, the first limiting holes of the upper limiting blocks on each slab automatically align to form a continuous channel. At this point, the limiting rod is vertically inserted into the channel until its bottom is embedded in the second limiting hole of the base. This design effectively resists interlayer slippage caused by horizontal earth pressure by locking the precast concrete slabs into a whole.

[0034] Other advantages, objectives, and features of this application will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be learned from practice of this application. The objectives and other advantages of this application may be realized and obtained through the detailed embodiments described below. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall structure of the recyclable precast concrete retaining wall of this utility model in one direction.

[0036] Figure 2 This is a schematic diagram of the overall structure of the recyclable precast concrete retaining wall of this utility model from another direction.

[0037] Figure 3 This is a schematic diagram of the overall structure of the concrete module of the recyclable precast concrete retaining wall of this utility model.

[0038] Figure 4 This is a partial structural schematic diagram of the recyclable precast concrete retaining wall concrete module of this utility model.

[0039] Figure 5 This utility model relates to a recyclable precast concrete retaining wall. Figure 4A schematic diagram of the split structure;

[0040] Figure 6 This utility model relates to a recyclable precast concrete retaining wall. Figure 5 Schematic diagram of Part A;

[0041] Figure 7 This utility model relates to recyclable precast concrete retaining wall columns and precast concrete slabs (see image). Figure 1 ) structural diagram;

[0042] Figure 8 This utility model relates to recyclable precast concrete retaining wall columns and precast concrete slabs (see image). Figure 2 ) structural diagram;

[0043] Figure 9 This utility model relates to a recyclable precast concrete retaining wall. Figure 7 A schematic diagram of the structure of part B;

[0044] Figure 10 This is a schematic diagram of the overall structure of the column component in the recyclable precast concrete retaining wall of this utility model.

[0045] Figure 11 This is a schematic diagram of the overall structure of the base in the recyclable precast concrete retaining wall of this utility model.

[0046] The components include: base 1, limiting protrusion 11, limiting groove 12, second connecting seat 13, column unit 2, column component 21, column frame 211, first slot 2111, second slot 2112, third slot 2113, column rod 212, first connecting seat 213, first pin 214, second pin 215, precast concrete slab 3, engaging part 31, locking strip 32, locking groove 33, support component 4, limiting block 5, first limiting hole 51, second limiting hole 52, and limiting rod 6. Detailed Implementation

[0047] The embodiments of this utility model will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be understood that the preferred embodiments are only for illustrating this utility model and not for limiting the scope of protection of this utility model.

[0048] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0049] This embodiment proposes a recyclable precast concrete retaining wall, such as... Figures 1 to 11 As shown, it includes multiple concrete modules, and adjacent concrete modules can be spliced ​​together; as an exemplary embodiment, such as Figure 1 and Figure 2 As shown, there are two concrete modules, which are joined together.

[0050] like Figure 4 and Figure 5 As shown, the concrete module includes a base 1 and at least two column units 2. The column units 2 are detachably mounted on the base 1 along its length, with adjacent column units 2 spaced apart. Preferably, there are three column units 2, all of which are detachably mounted on the base 1. A precast concrete slab 3 is provided between adjacent column units 2, and both ends of the precast concrete slab 3 can engage with the two column units 2.

[0051] It also includes a support member 4, which is located along the width direction of the base 1. The support member 4 is disposed on one or both sides of the column unit 2. One end of the support member 4 is connected to the column unit 2, and the other end of the support member 4 is connected to the base 1.

[0052] In this embodiment, as Figure 2 and Figure 3 As shown, the support member 4 is located on one side of the column unit 2. The retaining wall is composed of multiple interlocking concrete modules. Each module includes a base 1 and at least two column units 2. The base 1 serves as the foundation, and adjacent column units 2 are spaced apart to provide installation space for the precast concrete slab 3. The precast concrete slab 3 is placed between two column units 2, with both ends engaging with the column units 2 to form a continuous retaining surface. In addition, one end of the support member 4 is connected to the column unit 2, and the other end is connected to the base 1, providing additional stability to the column unit 2 and preventing it from tilting or collapsing. During construction, each component can be prefabricated in advance, requiring only simple assembly and connection on site, greatly shortening the construction cycle. When the retaining wall needs to be dismantled or adjusted, each component can be easily disassembled for transportation and reuse, reducing material waste and construction costs. This modular design allows the retaining wall to adapt to different engineering scenarios and needs, improving construction efficiency. Its recyclable nature also aligns with the concepts of green building and sustainable development.

[0053] As a preferred embodiment, such as Figure 11 As shown, along the length of base 1, one end of base 1 (i.e. Figure 11 A limit protrusion 11 is provided at the right end of the base 1, and the other end of the base 1 (i.e. Figure 11 A limiting groove 12 is provided at the left end of the middle base 1, and the limiting protrusion 11 of the base 1 is adapted to the limiting groove 12 of the adjacent base 1. The adjacent bases 1 are spliced ​​together by the adaptation of the limiting protrusion 11 and the limiting groove 12 to ensure precise docking between the bases 1, forming a continuous and stable foundation structure, effectively preventing displacement, enhancing the overall stability of the retaining wall, and making the splicing process simple and quick, improving construction efficiency, while ensuring the integrity of the structure and improving the overturning resistance.

[0054] Of course, in one possible implementation, multiple mounting holes can be made on the base 1, and the base 1 can be fixed to the ground by using rivets through the mounting holes.

[0055] As a preferred embodiment, such as Figure 5 and Figure 6 As shown, the column unit 2 includes multiple column components 21, each of which is detachably connected. Specifically, each column component 21 includes a column frame 211 and a column rod 212, with the column frame 211 and the column rod 212 fixedly connected. The column frame 211 is provided with a first slot 2111, into which the column rod 212 can be inserted. The base 1 is provided with a second slot 2112, into which the column rod 212 can be inserted.

[0056] In this embodiment, the column unit 2 adopts a modular layered design, consisting of multiple independent column components 21 vertically assembled through a plug-in structure. Each column component 21 is rigidly connected by a column frame 211 and a column rod 212. During installation, the column rod 212 of the lower column component 21 is vertically inserted into the first slot 2111 of the adjacent upper column frame 211, forming a plug-in structure to achieve the longitudinal extension of the column unit 2. At the same time, the second slot 2112 pre-set on the base 1 matches the bottom end of the column rod 212. The installation of the column unit 2 is completed by inserting the column rod 212 into the second slot 2112 of the base 1. The modular structure allows the column height to be flexibly adjusted according to engineering needs, and individual column components 21 can be replaced when damaged. Combined with the detachable connection method, it enables rapid disassembly and reuse of all components, significantly improving material turnover efficiency and reducing the total life cycle cost.

[0057] As a preferred embodiment, such as Figure 7 , Figure 8 and Figure 9As shown, two third slots 2113 are symmetrically provided on the column frame 211. Engaging portions 31 are formed on both sides of the precast concrete slab 3, which can be engaged into the third slots 2113. During installation, the engaging portions 31 of the precast concrete slab 3 engage with the third slots 2113 of the column frame 211. The sidewalls of the third slots 2113 constrain the engaging portions 31, preventing lateral displacement or detachment of the precast concrete slab 3. This interlocking connection method requires no additional fasteners and achieves rapid assembly through mechanical engagement. When disassembly is required, the engagement can be released by pushing and pulling in the opposite direction, achieving non-destructive separation of components and facilitating the recycling of modular components.

[0058] As a preferred embodiment, such as Figure 8 As shown, a retaining strip 32 is formed on the top of the precast concrete slab 3, and a retaining groove 33 is formed on the bottom of the precast concrete slab 3. The retaining strip 32 of the precast concrete slab 3 can be inserted into the retaining groove 33 of the adjacent precast concrete slab 3. In this embodiment, the top retaining strip 32 and the bottom retaining groove 33 of the precast concrete slab 3 form a vertical interlocking structure. During installation, the retaining strip 32 of the upper precast concrete slab 3 is inserted into the retaining groove 33 of the lower precast concrete slab 3 from top to bottom, forming a mortise and tenon connection. This design restricts the slippage and misalignment of adjacent precast concrete slabs 3 through mechanical interlocking, ensuring that a continuous load-bearing surface is formed after multiple layers of precast concrete slabs 3 are stacked. When disassembly is required, the interlocking can be released by vertical lifting, realizing the rapid separation and reuse of modular components.

[0059] As a preferred embodiment, such as Figure 2 , Figure 3 , Figure 4 and Figure 7 As shown, a limiting block 5 is provided on the precast concrete slab 3, and a first limiting hole 51 is provided on the limiting block 5. A second limiting hole 52 is provided on the base 1. When the precast concrete slabs 3 are stacked together, the first limiting holes 51 are coaxially aligned. A limiting rod 6 is also included, which passes through each of the first limiting holes 51, and the bottom of the limiting rod 6 is inserted into the second limiting hole 52. In this embodiment, the limiting rod 6 achieves vertical constraint by passing through the first limiting holes 51 of the stacked precast concrete slabs 3. When multiple layers of precast concrete slabs 3 are stacked, the first limiting holes 51 of the limiting block 5 on each precast concrete slab 3 automatically align to form a continuous channel. At this time, the limiting rod 6 is vertically inserted into the channel until its bottom is embedded in the second limiting hole 52 of the base 1. This design establishes a vertical force transmission path through rigid rods, locking each layer of precast concrete slabs 3 into a whole, effectively resisting interlayer displacement caused by horizontal earth pressure. To ensure the stability of the retaining wall structure under dynamic loads, the interlayer connection can be released by pulling out the limit rod 6 during disassembly, enabling rapid separation of modular components.

[0060] It is understandable that the limiting block 5 is not limited to being set on one side of the precast concrete slab 3, but can also be set on both sides of the precast concrete slab 3; similarly, the limiting rod 6 is not limited to the rod structure in this embodiment, but can also be a structure such as a rope or steel wire, for example, by passing the rope through each of the first limiting holes 51 to tightly connect each of the precast concrete slabs 3 together.

[0061] As a preferred embodiment, such as Figure 4 As shown, support member 4 is a support rod, with one end connected to column member 21 and the other end connected to base 1. Further, column member 21 is provided with a first connecting seat 213, and base 1 is provided with a second connecting seat 13. A first pin 214 is provided between one end of the support rod and the first connecting seat 213, and a second pin 215 is provided between the other end of the support rod and the second connecting seat 13. The support rod constructs a mechanically stable triangular support system through a double pin connection mechanism. The first connecting seat 213 of column member 21 and the second connecting seat 13 of base 1 serve as fixed fulcrums, and the two ends of the support rod are quickly hinged through the first pin 214 and the second pin 215, respectively. When earth pressure acts on the retaining wall, the support rod converts the horizontal thrust borne by column unit 2 into a vertical component force, which is transmitted to base 1 through the pin connection point, forming a self-balancing force system. The pin connection method ensures both rigid constraint of the structure under stress and enables tool-less quick assembly and disassembly. This design prevents axial displacement of the support rod through mechanical limiting, while retaining the recyclability of the modular system, allowing the support structure to be flexibly adjusted during construction and components to be quickly replaced during maintenance.

[0062] As a preferred embodiment, such as Figure 11 As shown, the base 1 has a trapezoidal cross-section. The trapezoidal cross-section of base 1 enhances structural stability through geometric optimization. Its wedge-shaped / trapezoidal form, narrower at the top and wider at the bottom, lowers the center of gravity and increases the contact area with the foundation, thereby effectively distributing vertical loads and improving overturning resistance. This design ensures structural stability while adapting to complex terrain through the stacking of modular trapezoidal units, enabling rapid construction and structural optimization. The structure is compact and highly practical, making this invention highly valuable for application.

[0063] The above embodiments are merely preferred embodiments provided to fully illustrate the present utility model, and the protection scope of the present utility model is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present utility model are all within the protection scope of the present utility model.

Claims

1. A precast concrete retaining wall that is recyclable, characterised in that, include: Multiple concrete modules, adjacent concrete modules can be spliced ​​together; The concrete module includes a base (1) and at least two column units (2). Along the length of the base (1), the column units (2) are detachably installed on the base (1), and adjacent column units (2) are spaced apart. A precast concrete slab (3) is provided between two column units (2), and both ends of the precast concrete slab (3) can be engaged with the two column units (2). It also includes a support member (4), which is disposed on one or both sides of the column unit (2) along the width direction of the base (1). One end of the support member (4) is connected to the column unit (2), and the other end of the support member (4) is connected to the base (1).

2. The recyclable precast concrete retaining wall of claim 1, wherein: Along the length direction of the base (1), one end of the base (1) is provided with a limiting protrusion (11) and the other end of the base (1) is provided with a limiting groove (12). The limiting protrusion (11) of the base (1) is adapted to the limiting groove (12) of the adjacent base (1).

3. The recyclable precast concrete retaining wall of claim 2, wherein: The column unit (2) includes multiple column members (21), and each column member (21) is detachably connected.

4. The recyclable precast concrete retaining wall of claim 3, wherein: The column component (21) includes a column frame (211) and a column rod (212), wherein the column frame (211) and the column rod (212) are fixedly connected; The column frame (211) is provided with a first slot (2111), and the column rod (212) can be inserted into the first slot (2111) of the adjacent column frame (211); The base (1) has a second slot (2112) and the column rod (212) can be inserted into the second slot (2112).

5. The recyclable precast concrete retaining wall of claim 4, wherein: Two third slots (2113) are symmetrically provided on the column frame (211), and the precast concrete slab (3) has a locking part (31) on both sides, which can be locked into the third slot (2113).

6. The recyclable precast concrete retaining wall of claim 5, wherein: The top of the precast concrete slab (3) has a locking strip (32), and the bottom of the precast concrete slab (3) has a locking groove (33). The locking strip (32) of the precast concrete slab (3) can be locked into the locking groove (33) of the adjacent precast concrete slab (3).

7. The recyclable precast concrete retaining wall of claim 6, wherein: The precast concrete slab (3) is provided with a limiting block (5), the limiting block (5) is provided with a first limiting hole (51), and the base (1) is provided with a second limiting hole (52); When the precast concrete slabs (3) are stacked together, the first limiting holes (51) are coaxially corresponding; It also includes a limiting rod (6), which passes through each of the first limiting holes (51), and the bottom of the limiting rod (6) is inserted into the second limiting hole (52).

8. The recyclable precast concrete retaining wall of claim 7, wherein: The support member (4) is a support rod, one end of which is connected to the column member (21), and the other end of which is connected to the base (1).

9. The recyclable precast concrete retaining wall of claim 8, wherein: The first connecting seat (213) is arranged on the column piece (21), the second connecting seat (13) is arranged on the base (1), the first bolt (214) is arranged between one end of the supporting rod and the first connecting seat (213), and the second bolt (215) is arranged between the other end of the supporting rod and the second connecting seat (13).

10. The recyclable precast concrete retaining wall of any one of claims 1 to 9, wherein: The cross section of the base (1) is in a trapezoidal structure.

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