Assembled drainage retaining wall structure and construction method thereof

Abstract

The present invention relates to an assembled drainage retaining wall structure and a construction method thereof, comprising a plurality of S-shaped prefabricated wall bricks, I-shaped columns, connecting plates and a bottom plate; the assembled drainage retaining wall structure realizes modular assembly, and the modules are made more universal by prefabricated assemblies, and are convenient for construction and connection, maintenance and replacement; connecting plates are used to connect the upper and lower prefabricated wall bricks, the prefabricated wall bricks and the bottom plate, and the I-shaped columns and the bottom plate. Compared with traditional mortise and tenon or fastener connection methods, the precision requirements are not high, the installation is convenient, and the connecting plates can be arbitrarily cut on site according to actual conditions, thereby increasing the on-site applicability of the retaining wall structure.

Description

Technical Field

[0001] The present invention relates to the technical field of retaining walls, and in particular to an assembled drainage retaining wall structure and a construction method thereof. Background Art

[0002] Retaining walls are often used in engineering construction. Traditional retaining walls are mostly stone or concrete structures. Stone structures use irregular stones and mortar cement to be stacked on site, and concrete structures are mostly cast and maintained on site with formwork. The structure is heavy and consumes a lot of stone or concrete materials. It often has high requirements for the foundation and the structure has limited ability to withstand deformation. Traditional retaining walls have disadvantages such as many on-site construction processes, susceptibility to environmental influences, long production time, and difficulty in ensuring construction quality. In addition, it is difficult to adjust or replace the retaining walls constructed by traditional construction after completion. The applicability is poor and it is not adapted to the trend of standardization and industrialization of engineering construction.

[0003] Traditional retaining walls utilize open drainage, primarily for both surface and body water on the fill slopes. Surface water on the top of the wall flows down the outer face of the retaining wall, while body water on the fill slopes flows down the outer face of the retaining wall through weep holes in the retaining wall. Weep holes are located along the height and length of the wall, sloping outward and typically spaced 1.5 to 3 meters apart. Since water flows down the outer face of the wall, it leaves watermarks that affect its appearance and can easily erode the fill at the toe of the retaining wall, compromising its safety. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an assembled drainage retaining wall structure and a construction method thereof, so as to overcome the deficiencies in the above-mentioned prior art.

[0005] The technical solution of the present invention to solve the above technical problems is as follows: an assembled drainage retaining wall structure, comprising a plurality of S-shaped prefabricated wall bricks, I-shaped columns, connecting plates and a bottom plate;

[0006] Two vertical grooves are formed at the two bends of the precast wall bricks, and semicircular transverse grooves are provided on the upper and lower end surfaces of the precast wall bricks. When the wall is stacked, the upper and lower semicircular transverse grooves of the precast wall bricks are aligned to form a circular hole, and the semicircular transverse grooves intersect with the vertical grooves.

[0007] Two sets of parallel openings are vertically provided at both ends of the I-shaped column along its height direction, and lateral grooves are provided on both sides of the I-shaped column;

[0008] The upper and lower side walls of the connecting plate are provided with slots along their length direction, and the front and rear side walls of the connecting plate are provided with a plurality of semicircular grooves matching the semicircular transverse grooves along their height direction;

[0009] A bottom plate slot matching the opening is vertically provided on the upper surface of the bottom plate. The sizes of the opening and the bottom plate slot match the sizes of the connecting plate. A bottom plate groove is horizontally provided on the upper surface of the bottom plate between the two bottom plate slots. The size of the bottom plate groove matches the size of the connecting plate. A vertical drainage groove is provided in the bottom plate groove corresponding to the bottom plate slot. A horizontal drainage groove connected to the vertical drainage groove is provided on one side of the bottom plate.

[0010] Vertically arranged connecting plates are respectively provided in the bottom plate slots, the I-shaped columns are mounted on the vertically arranged connecting plates through the openings, horizontally arranged connecting plates are provided in the bottom plate grooves, the precast wall bricks are staggered and laid on the bottom plate, horizontally arranged connecting plates are respectively provided in the bottom plate grooves and the vertical grooves, and a gap is provided between the precast wall bricks and the inner wall of the lateral groove of the I-shaped column.

[0011] The beneficial effects of the present invention are as follows: the assembled drainage retaining wall structure realizes modular assembly, and the modules are more universal through prefabricated assemblies, and are convenient for construction and connection, and maintenance and replacement;

[0012] The retaining wall structure aligns the upper and lower semicircular transverse grooves of the precast bricks to form circular holes for concealed drainage. The denser the drainage holes are, the more conducive it is to quickly remove water from the fill and reduce its lateral earth pressure. Water on the fill slope behind the wall flows into the vertical grooves of the uppermost precast bricks and flows along the longitudinal direction of the wall to the I-shaped columns. Water in the fill behind the wall flows through the permeable geotextile along the circular holes between the precast bricks and the semicircular grooves of the connecting plate into the grooves at the bottom of the connecting plate. Water flows along the longitudinal direction of the wall to the I-shaped columns. At the I-shaped columns, a gap is reserved between the precast bricks and the I-shaped columns along the longitudinal direction of the wall. Water falls into the vertical drainage grooves of the bottom plate along the gap and is finally discharged into the external municipal drainage network along the connected transverse drainage grooves. The S-shaped precast brick wall structure is practical and relatively lightweight, making it easy to construct. The vertical groove design takes into account both anchoring and drainage functions.

[0013] Connecting plates are used to connect the upper and lower precast bricks of the wall, between the precast bricks of the wall and the base plate, and between the I-shaped columns and the base plate. Compared with traditional mortise and tenon or fastener connection methods, the precision requirements are not high and the installation is convenient. The connecting plates can be arbitrarily cut on site according to actual conditions, which increases the on-site applicability of the retaining wall structure.

[0014] On the basis of the above technical solution, the present invention can also be improved as follows.

[0015] Furthermore, the bottom plate includes an A-type bottom plate and a B-type bottom plate; the bottom plate slots, vertical drainage grooves and horizontal drainage grooves are arranged on the B-type bottom plate, and both the A-type bottom plate and the B-type bottom plate are provided with bottom plate grooves.

[0016] Furthermore, one side of the A-type bottom plate and the B-type bottom plate is provided with a convex tenon, and the other side is provided with a concave tenon groove.

[0017] Furthermore, the I-shaped column includes a plurality of vertically stacked I-shaped prefabricated bricks.

[0018] Furthermore, the interior of the precast bricks of the wall is a hollow structure.

[0019] Furthermore, the precast bricks of the upper and lower wall layers are arranged in a vertically symmetrical structure.

[0020] Furthermore, filler is provided between the two precast bricks of the wall.

[0021] Furthermore, the connecting plate is made of hard plastic; the base plate, precast wall bricks and I-shaped columns are made of concrete, reinforced concrete, sintered clay, autoclaved fly ash or autoclaved fly ash.

[0022] A construction method for an assembled drainage retaining wall comprises the following steps:

[0023] Step S1: foundation construction, excavation of retaining wall foundation, foundation treatment or compaction of original soil, and then construction of cushion layer;

[0024] Step S2: Install the base plate. On the completed cushion layer, determine the installation positions of the A-type base plate and the B-type base plate by staking out. The two A-type base plates and the A-type base plate and the B-type base plate are connected to each other through mortise and tenon joints at the ends, and the transverse drainage grooves of the B-type base plate are connected to the external municipal drainage network.

[0025] Step S3: Stacking the columns, placing the I-shaped precast bricks on the B-shaped base plate, aligning the openings of the I-shaped precast bricks with the base plate slots of the B-shaped base plate, and vertically inserting the connecting plate to complete the connection between the I-shaped precast bricks and the B-shaped base plate. The I-shaped precast bricks are aligned and stacked up and down to form I-shaped columns;

[0026] Step S4: Stacking the retaining wall, placing the connecting plate horizontally in the groove of the bottom plate on the same straight line formed by the A-type bottom plate and the B-type bottom plate, covering the exposed connecting plate with the downward vertical groove of the precast wall bricks, and at the same time, the upward vertical groove is close to the fill side. After completing the stacking of one layer of precast wall bricks, fill the horizontal joints in the vertical grooves of the precast wall bricks with caulking material, and then complete the stacking of the precast wall bricks of the upper layer according to the above requirements. When constructing the precast wall bricks of the upper layer, the semicircular horizontal grooves of the precast wall bricks of the two layers are offset and aligned. When stacking the precast wall bricks near the I-shaped columns, the precast wall bricks need to be embedded in the lateral grooves of the I-shaped precast bricks. At the same time, a gap is reserved according to the design requirements for later vertical drainage;

[0027] Step S5: Filling. After the prefabricated retaining wall is installed to a preset height or is completed, a permeable geotextile is arranged on the filling side close to the wall, and filling is performed on the bottom plate foundation side and the retaining side. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 This is a schematic diagram of the prefabricated brick structure of the wall of the present invention;

[0030] Figure 3 This is a schematic diagram of the I-shaped prefabricated brick structure of the present invention;

[0031] Figure 4 This is a schematic structural diagram of the connecting plate of the present invention;

[0032] Figure 5 This is a cross-sectional view of the wall structure of the present invention;

[0033] Figure 6 This is a cross-sectional view of the column structure of the present invention;

[0034] Figure 7 This is a schematic diagram of the A-type bottom plate structure of the present invention;

[0035] Figure 8 Schematic diagram of the B-type bottom plate structure of the present invention;

[0036] Figure 9 It is a schematic diagram of the base plate assembly structure of the present invention.

[0037] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0038] 1. Precast bricks for the wall; 11. Vertical grooves; 12. Semicircular horizontal grooves; 2. I-shaped columns; 21. I-shaped precast bricks; 211. Openings; 212. Lateral grooves; 3. Connecting plates; 31. Slots; 32. Semicircular grooves; 4. Bottom plate; 41. Type A bottom plate; 42. Type B bottom plate; 4121. Bottom plate grooves; 4122. Convex tenon; 4123. Concave tenon; 421. Bottom plate slots; 422. Vertical drainage troughs; 423. Horizontal drainage troughs. DETAILED DESCRIPTION

[0039] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0040] Example 1, as Figures 1 to 9 As shown, an assembled drainage retaining wall structure includes a plurality of S-shaped prefabricated wall bricks 1, I-shaped columns 2, connecting plates 3 and bottom plates 4;

[0041] Two vertical grooves 11 are formed at the two bends of the precast wall bricks 1, and semicircular transverse grooves 12 are provided on the upper and lower end surfaces of the precast wall bricks 1. When the wall is stacked, the upper and lower semicircular transverse grooves 12 of the precast wall bricks 1 are aligned to form a circular hole, and the semicircular transverse grooves 12 and the vertical grooves 11 intersect;

[0042] Two sets of parallel openings 211 are vertically provided at both ends of the I-shaped column 2 along its height direction, and lateral grooves 212 are provided on both sides of the I-shaped column 2;

[0043] The upper and lower side walls of the connecting plate 3 are provided with slots 31 along their length direction, and the front and rear side walls of the connecting plate 3 are provided with a plurality of semicircular grooves 32 along their height direction that match the semicircular transverse grooves 12;

[0044] A bottom plate slot 421 is vertically provided on the upper end surface of the bottom plate 4, which matches the opening 211. The dimensions of the opening 211 and the bottom plate slot 421 match the dimensions of the connecting plate 3. A bottom plate groove 4121 is horizontally provided on the upper end surface of the bottom plate 4 between the two bottom plate slots 421. The dimensions of the bottom plate groove 4121 match the dimensions of the connecting plate 3. A vertical drainage groove 422 is provided in the bottom plate groove 4121 corresponding to the bottom plate slot 421. A horizontal drainage groove 423 is provided on one side of the bottom plate 4, which is connected to the vertical drainage groove 422.

[0045] Vertically arranged connecting plates 3 are respectively provided in the bottom plate slots 421, the I-shaped columns 2 are sleeved on the vertically arranged connecting plates 3 through the openings 211, and horizontally arranged connecting plates 3 are provided in the bottom plate grooves 4121. The precast wall bricks 1 are staggered and stacked on the bottom plate 4, and horizontally arranged connecting plates 3 are respectively provided in the bottom plate grooves 4121 and the vertical grooves 11. A gap is provided between the precast wall bricks 1 and the inner wall of the lateral groove 212 of the I-shaped column 2.

[0046] The assembled drainage retaining wall structure realizes modular assembly. The prefabricated assembly body makes the module more universal, convenient for construction and connection, and easy for maintenance and replacement.

[0047] The retaining wall structure aligns the upper and lower semicircular transverse grooves 12 of the precast wall bricks 1 to form circular holes for concealed drainage. The denser the drainage holes are, the more conducive it is to quickly remove the water in the fill 6 and reduce its lateral earth pressure. The water on the fill slope behind the wall flows into the vertical grooves 11 of the uppermost precast wall bricks 1 and flows along the longitudinal direction of the wall to the I-shaped column 2. The water in the fill behind the wall passes through the permeable geotextile along the circular holes between the precast wall bricks 1 and the semicircular grooves 32 of the connecting plate 3 and flows into the groove 31 at the bottom of the connecting plate 3. The water flows along the longitudinal direction of the wall to the I-shaped column 2. At the I-shaped column 2, a gap is reserved between the precast wall bricks 1 and the I-shaped column 2 along the longitudinal direction of the wall. The water falls into the vertical drainage groove 422 of the bottom plate 4 along the gap, and finally is discharged into the external municipal drainage network along the transverse drainage groove 423 connected thereto. The S-shaped prefabricated wall bricks 1 are practical and relatively lightweight, making them easy to construct. The vertical grooves 11 are designed to provide both anchoring and drainage functions.

[0048] The upper and lower layers of precast bricks 1 of the wall, the precast bricks 1 and the base plate 4, and the I-shaped columns 2 and the base plate 4 are all connected by connecting plates 3. Compared with the traditional mortise and tenon or fastener connection method, the precision requirement is not high and the installation is convenient. The connecting plates 3 can be arbitrarily cut on site according to actual conditions, which increases the on-site applicability of the retaining wall structure.

[0049] Example 2, as Figures 1 to 9 As shown, this embodiment is a further improvement based on Example 1, and its details are as follows:

[0050] The base plate 4 includes an A-type base plate 41 and a B-type base plate 42. Base plate slots 421, vertical drainage grooves 422, and transverse drainage grooves 423 are provided on the B-type base plate 42. Both the A-type base plate 41 and the B-type base plate 42 are provided with base plate grooves 4121. Based on the needs of the I-shaped column 2, the B-type base plate 42 is selected, and only the base plate slots 421, vertical drainage grooves 422, and transverse drainage grooves 423 need to be provided on the B-type base plate 42.

[0051] Example 3, as Figures 1 to 9 As shown, this embodiment is a further improvement based on the embodiment 2, and its details are as follows:

[0052] One side of the A-type base plate 41 and the B-type base plate 42 are each provided with a convex tenon 4122, and the other side is provided with a concave tenon groove 4123. The mortise and tenon structure allows the A-type base plate 41 and the B-type base plate 42 to be assembled together, as well as the A-type base plate 41 and the A-type base plate 41 to be assembled together. No screws or bolts are required for reinforcement, making the assembly method simpler and more efficient.

[0053] Example 4, as Figures 1 to 9 As shown, this embodiment is a further improvement based on Example 1, and its details are as follows:

[0054] The I-shaped column 2 comprises a plurality of vertically stacked I-shaped precast bricks 21. The I-shaped column 2 of suitable height can be assembled with the I-shaped precast bricks 21 according to actual on-site needs.

[0055] Example 5, as Figures 1 to 9 As shown, this embodiment is a further improvement based on Example 1, and its details are as follows:

[0056] The precast wall bricks 1 have a hollow interior. This reduces the weight of each individual precast wall brick, thereby reducing the weight of the wall, lowering production costs, and reducing transportation costs. In practice, each precast wall brick 1 is provided with multiple transverse through-holes to achieve a hollow interior.

[0057] Example 6, as Figures 1 to 9 As shown, this embodiment is a further improvement based on Example 1, and its details are as follows:

[0058] The upper and lower layers of precast bricks 1 are arranged in a vertically symmetrical structure. The upper and lower walls are fixed together by a common connecting plate 3, achieving a stable connection of the precast bricks 1. In a specific implementation, the precast bricks 1 of the upper and lower walls are arranged in a horizontally staggered manner to improve the stability of the wall.

[0059] Example 7, as Figures 1 to 9 As shown, this embodiment is a further improvement based on Example 1, and its details are as follows:

[0060] A filler is provided between the two prefabricated wall bricks 1. The filler can be made of mortar, silicone, polyurethane or asphalt materials.

[0061] Example 8, as Figures 1 to 9 As shown, this embodiment is a further improvement based on Example 1, and its details are as follows:

[0062] The connecting plate 3 is made of rigid plastic; the base plate 4, precast wall bricks 1, and I-shaped columns 2 are made of concrete, reinforced concrete, sintered clay, autoclaved fly ash, or autoclaved fly ash. Rigid plastic is lightweight and corrosion-resistant, and can be cut on-site as needed.

[0063] Example 9, a construction method of an assembled drainage retaining wall, such as Figures 1 to 9 As shown, the following steps are included:

[0064] Step S1: foundation construction, excavation of retaining wall foundation, foundation treatment or compaction of original soil, and then construction of cushion layer;

[0065] Step S2: Install the base plate 4. On the completed cushion layer, determine the installation positions of the A-type base plate 41 and the B-type base plate 42 by staking out. The two A-type base plates 41 and the A-type base plate 41 and the B-type base plate 42 are connected to each other by mortise and tenon joints at the ends using the convex tenon 4122 and concave tenon groove 4123. The transverse drainage groove 423 of the B-type base plate 42 is connected to the external municipal drainage network.

[0066] Step S3: Stacking the columns: Place the I-shaped precast bricks 21 on the B-shaped bottom plate 42, align the openings 211 of the I-shaped precast bricks 21 with the bottom plate slots 421 of the B-shaped bottom plate 42, and vertically insert the connecting plate 3 to complete the connection between the I-shaped precast bricks 21 and the B-shaped bottom plate 42. The I-shaped precast bricks 21 are aligned and stacked up and down to form an I-shaped column 2;

[0067] Step S4: stacking the retaining wall, placing the connecting plate 3 horizontally in the bottom plate groove 4121 on the same straight line formed by the A-type bottom plate 41 and the B-type bottom plate 42, covering the exposed connecting plate 3 with the downward vertical groove 11 of the precast wall brick 1, and at the same time, the upward vertical groove 11 is close to the fill side, and after completing the stacking of one layer of precast wall bricks 1, fill the horizontal joints in the vertical groove 11 of the precast wall brick 1 with a caulking material, and then complete the stacking of the precast wall bricks 1 of the upper layer according to the above requirements. When constructing the upper layer of precast wall bricks 1, the semicircular horizontal grooves 12 of the two layers of precast wall bricks 1 are offset and aligned. When stacking the precast wall bricks 1 near the I-shaped column 2, the precast wall bricks 1 need to be embedded in the lateral groove 212 of the I-shaped precast brick 21, and at the same time, a gap is reserved according to the design requirements for later vertical drainage;

[0068] Step S5: Filling. After the prefabricated retaining wall is installed to a preset height or is completed, a permeable geotextile 5 is arranged on the wall side of the filling 6, and filling 6 is performed on the foundation side of the bottom plate 4 and the retaining wall side.

[0069] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An assembled drainage retaining wall structure, characterized in that: It comprises a plurality of S-shaped prefabricated wall bricks (1), an I-shaped column (2), a connecting plate (3) and a bottom plate (4); Two vertical grooves (11) are formed at the two bends of the precast wall bricks (1), and semicircular transverse grooves (12) are provided on the upper and lower end surfaces of the precast wall bricks (1). When the wall is stacked, the upper and lower semicircular transverse grooves (12) of the precast wall bricks (1) are aligned to form a circular hole, and the semicircular transverse grooves (12) and the vertical grooves (11) intersect. Two sets of parallel openings (211) are vertically provided at both ends of the I-shaped column (2) along its height direction, and lateral grooves (212) are provided on both sides of the I-shaped column (2); The upper and lower side walls of the connecting plate (3) are provided with slots (31) along their length direction, and the front and rear side walls of the connecting plate (3) are provided with a plurality of semicircular grooves (32) matching the semicircular transverse grooves (12) along their height direction; A bottom plate slot (421) matching the opening (211) is vertically provided on the upper end surface of the bottom plate (4), and the sizes of the opening (211) and the bottom plate slot (421) match the size of the connecting plate (3). A bottom plate groove (4121) is horizontally provided on the upper end surface of the bottom plate (4) between the two bottom plate slots (421), and the size of the bottom plate groove (4121) matches the size of the connecting plate (3). A vertical drainage groove (422) is provided on the bottom plate groove (4121) corresponding to the bottom plate slot (421), and a horizontal drainage groove (423) connected to the vertical drainage groove (422) is provided on one side of the bottom plate (4); The bottom plate slots (421) are respectively provided with the vertically arranged connecting plates (3); the I-shaped columns (2) are sleeved on the vertically arranged connecting plates (3) through the openings (211); the bottom plate grooves (4121) are provided with the horizontally arranged connecting plates (3); the precast wall bricks (1) are staggered and stacked on the bottom plate (4); the bottom plate grooves (4121) and the vertical grooves (11) are respectively provided with the horizontally arranged connecting plates (3); and a gap is provided between the precast wall bricks (1) and the inner wall of the lateral groove (212) of the I-shaped columns (2).

2. The assembled drainage retaining wall structure according to claim 1, characterized in that: The bottom plate (4) comprises an A-type bottom plate (41) and a B-type bottom plate (42); the bottom plate slot (421), the vertical drainage groove (422), and the horizontal drainage groove (423) are arranged on the B-type bottom plate (42); and the bottom plate groove (4121) is provided on both the A-type bottom plate (41) and the B-type bottom plate (42).

3. The assembled drainage retaining wall structure according to claim 2, characterized in that: The A-type bottom plate (41) and the B-type bottom plate (42) are both provided with a convex tenon (4122) on one side and a concave tenon groove (4123) on the other side.

4. The assembled drainage retaining wall structure according to claim 1, characterized in that: The I-shaped column (2) comprises a plurality of I-shaped prefabricated bricks (21) stacked vertically.

5. The assembled drainage retaining wall structure according to claim 1, characterized in that: The interior of the prefabricated wall bricks (1) is a hollow structure.

6. The assembled drainage retaining wall structure according to claim 1, characterized in that: The upper and lower layers of the prefabricated wall bricks (1) are arranged in a vertically symmetrical structure.

7. The assembled drainage retaining wall structure according to claim 1, characterized in that: A filler is provided between the two prefabricated wall bricks (1).

8. The assembled drainage retaining wall structure according to claim 1, characterized in that: The material of the connecting plate (3) is hard plastic; the material of the bottom plate (4), the prefabricated wall bricks (1) and the I-shaped column (2) is concrete, reinforced concrete, sintered clay, autoclaved fly ash or autoclaved fly ash.

9. A construction method for an assembled drainage retaining wall, characterized in that: The construction of the assembled drainage retaining wall structure according to claim 3 comprises the following steps: Step S1: foundation construction, excavation of retaining wall foundation, foundation treatment or compaction of original soil, and then construction of cushion layer; Step S2: Install the base plate (4). On the completed cushion layer, determine the installation positions of the A-type base plate (41) and the B-type base plate (42). The two A-type base plates (41) and the A-type base plate (41) and the B-type base plate (42) are connected to each other by mortise and tenon joints through the convex tenon (4122) and the concave tenon groove (4123) at the end. The transverse drainage groove (423) of the B-type base plate (42) is connected to the external municipal drainage network. Step S3: stacking the columns, placing the I-shaped prefabricated bricks (21) on the B-shaped bottom plate (42), aligning the openings (211) of the I-shaped prefabricated bricks (21) with the bottom plate slots (421) of the B-shaped bottom plate (42), and vertically inserting the connecting plate (3) to complete the connection between the I-shaped prefabricated bricks (21) and the B-shaped bottom plate (42). The I-shaped prefabricated bricks (21) are stacked and aligned up and down to form the I-shaped columns (2); Step S4: stacking the retaining wall, horizontally placing the connecting plate (3) in the bottom plate groove (4121) on the same straight line formed by the A-type bottom plate (41) and the B-type bottom plate (42), and covering the exposed connecting plate (3) with the downward vertical groove (11) of the wall precast brick (1), while the upward vertical groove (11) is close to the filling side. After completing the stacking of one layer of the wall precast brick (1), fill the vertical groove (11) of the wall precast brick (1) with a filler. ) in the horizontal joint, and then complete the stacking of the upper layer of the precast wall bricks (1) according to the above requirements. When constructing the upper layer of the precast wall bricks (1), the semicircular horizontal grooves (12) of the two layers of the precast wall bricks (1) are offset and aligned. When stacking the precast wall bricks (1) near the I-shaped column (2), the precast wall bricks (1) need to be embedded in the lateral grooves (212) of the I-shaped precast bricks (21). At the same time, a gap is reserved according to the design requirements for later vertical drainage; Step S5: Filling. After the assembled retaining wall is installed to a preset height or is completed, a permeable geotextile (5) is arranged on the side of the fill (6) close to the wall, and filling (6) is performed on the foundation side and retaining side of the bottom plate (4).

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