Fabricated retaining wall with movable unloading plate

Abstract

The utility model relates to the technical field of civil engineering application, in particular to an assembled retaining wall with a movable unloading plate, and provides the following scheme aiming at the problems that an unloading plate retaining wall in the prior art is high in construction difficulty and inconvenient to disassemble and assemble: the assembled retaining wall comprises a prefabricated retaining wall and the unloading plate. The prefabricated retaining wall comprises a base, a wall panel fixed to the top of the base and two rib columns fixed to the back face of the wall panel, the base comprises a wall toe board located on the front face of the wall panel and a wall heel board located on the back face of the wall panel, and two square holes are formed in the positions, located at the top ends of the rib columns, of the back face of the wall panel. Two tenons are arranged at one end of the unloading plate, and the tenons are matched with the square holes. According to the utility model, not only is the construction difficulty greatly reduced, but also the unloading plate is easy to disassemble and assemble, so that the filling and the pressing construction of a soil body at the wall back position are facilitated, and the supporting capability of the unloading plate can be further enhanced due to the arrangement of the supporting assembly.

Description

Technical Field

[0001] The utility model relates to the field of civil engineering applications, in particular to a prefabricated retaining wall with a movable unloading plate. Background Art

[0002] The unloading plate retaining wall is a retaining structure that adds an unloading plate on the back of the wall to block the downward transmission of the earth pressure of the upper wall part, thereby reducing the earth pressure on the back of the wall, increasing the anti-sliding moment and anti-overturning moment of the retaining wall, and jointly resisting the lateral earth pressure of the soil body through the backfill soil of the wall and the wall body qualification. However, this retaining wall has the following limitations: 1. The connection between the unloading plate and the wall panel bears a large bending moment and shear force, belonging to a cantilever structure, and a large cross-section and reinforcement need to be set, resulting in greater construction difficulty and higher cost; 2. Since the unloading plate cannot be disassembled and assembled, there is an occlusion effect of the unloading plate, and it is difficult for the soil compaction equipment to reach the space below the unloading plate, and the filling construction in this area is relatively difficult, and the degree of compaction is difficult to meet the requirements, and the filling construction quality is relatively poor. Therefore, this solution proposes a prefabricated retaining wall with a movable unloading plate. Content of the Utility Model

[0003] The prefabricated retaining wall with a movable unloading plate proposed by the utility model solves the problems of large construction difficulty and inconvenient disassembly and assembly of the unloading plate retaining wall in the prior art.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A prefabricated retaining wall with a movable unloading plate includes a precast retaining wall and an unloading plate. It is characterized in that the precast retaining wall includes a base, a wall panel fixed on the top of the base, and two rib columns fixed on the back of the wall panel. The base includes a wall toe plate at the front part of the wall panel and a wall heel plate at the back part of the wall panel. Two square holes are opened at the position of the back of the wall panel at the top of the rib column;

[0006] One end of the unloading plate is provided with two tenons, which are fitted with the square holes. The length of the tenon is greater than the thickness of the wall panel. A support assembly is installed on the bottom surface of the unloading plate. The support assembly includes a telescopic rod installed on the bottom surface of the unloading plate and an abutting block fixed at the end of the telescopic rod away from the unloading plate. The telescopic rod is inclined, and the abutting block abuts against the back of the wall panel.

[0007] Through the above technical scheme, not only the construction difficulty is greatly reduced, but also the unloading plate is easy to disassemble and assemble, so as to facilitate the filling and compaction construction of the soil at the back of the wall. Moreover, the setting of the support assembly can further enhance the support ability of the unloading plate.

[0008] As a further improvement of the above solution, a first round hole is provided at the top end of the rib column. A second round hole identical to the first round hole is formed in the plate body of the unloading plate close to the tenon side. A fixing rod that fits with the second round hole is inserted into the first round hole.

[0009] Through the above technical solution, the disassembly, installation and fixation of the unloading plate are facilitated.

[0010] As a further improvement of the above solution, a baffle is provided at one end of the unloading plate away from the tenon.

[0011] Through the above technical solution, the friction with the soil body can be effectively enhanced by using the baffle, and the anti-slip stability of the retaining wall is improved.

[0012] As a further improvement of the above solution, the telescopic rod includes a movable rod, a fixed rod detachably fixed to the bottom surface of the unloading plate, and a threaded sleeve rotatably sleeved on the other end of the fixed rod. One end of the movable rod is fixed with a screw rod, and the screw rod is threadedly sleeved inside the threaded sleeve. The abutting block is fixed to the other end of the movable rod.

[0013] Through the above technical solution, the length of the telescopic rod can be conveniently adjusted.

[0014] As a further improvement of the above solution, a card hole that fits with the abutting block is formed on the back surface of the wall panel.

[0015] Through the above technical solution, it can effectively prevent the abutting block from writing or slipping on the back surface of the wall panel.

[0016] As a further improvement of the above solution, a plurality of anti-slip protrusions are fixed on the outer wall of the baffle away from the unloading plate.

[0017] Through the above technical solution, the friction between the baffle and the soil body is further enhanced.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0019] 1. Through the cooperation between the rib column, the fixing rod, the tenon and the square hole, the disassembly and installation of the unloading plate can be facilitated, so as to facilitate the filling and compaction construction of the soil body at the back of the wall.

[0020] 2. Through the setting of the support assembly, the unloading plate can be supported, so as to reduce the pressure borne by the fixing rod and the tenon, and avoid deformation or damage of the unloading plate.

[0021] 3. Through the assembly connection between the tenon on the unloading plate and the square hole, the adjacent precast retaining walls are tightly fixed together, and the integrity of the assembled retaining wall is improved.

[0022] 4. The self-weight of part of the soil borne by the unloading plate is transmitted to the retaining wall through the rib columns, which improves the anti-overturning stability of the retaining wall. In addition, a vertical baffle is provided at the end of the unloading plate, increasing the friction with the soil and improving the anti-sliding stability of the retaining wall. Description of the Drawings

[0023] Figure 1 is the side view of the retaining wall;

[0024] Figure 2 is the top view of the retaining wall;

[0025] Figure 3 is the front three-dimensional schematic diagram of the retaining wall;

[0026] Figure 4 is the back three-dimensional schematic diagram of the retaining wall;

[0027] Figure 5 is the schematic diagram of the movable unloading plate;

[0028] Figure 6 is the schematic diagram of the mutual assembly of the retaining walls;

[0029] Figure 7 is the schematic diagram of the retaining wall assembled on the original ground;

[0030] Figure 8 is the schematic diagram of the backfill soil reaching the height of the rib columns;

[0031] Figure 9 is the three-dimensional schematic diagram of the assembled movable unloading plate;

[0032] Figure 10 is the top view of the assembled movable unloading plate.

[0033] Figure 11 is the front schematic diagram of the backfill soil reaching the top of the wall;

[0034] Figure 12 is the back schematic diagram of the backfill soil reaching the top of the wall.

[0035] Figure 13 is the side view of the retaining wall after completion.

[0036] Main Symbol Explanation:

[0037] 1. Toe slab; 2. Heel slab; 3. Wall panel; 4. Rib column; 5. First round hole; 6. Square hole; 7. Unloading plate; 8. Baffle; 9. Tenon; 10. Fixed rod; 11. Fixed bar; 12. Threaded sleeve; 13. Movable rod; 14. Contact block; 15. Card hole; A. Original ground; B. Fill surface. Detailed Implementation Manner

[0038] Next, in combination with the accompanying drawings and specific embodiments, the present utility model will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be arbitrarily combined to form new embodiments.

[0039] Embodiment 1:

[0040] Please refer to Figure 1 , this embodiment includes a precast retaining wall and a load-unloading plate 7. The precast retaining wall includes a base, a wall panel 3 fixed on the top of the base, and two rib columns 4 fixed on the back of the wall panel 3. The base includes a toe slab 1 located in the front part of the wall panel 3 and a heel slab 2 located in the back part of the wall panel 3. Two square holes 6 are opened at the position of the top end of the rib column 4 on the back of the wall panel 3. One end of the load-unloading plate 7 is provided with two tenons 9, and the tenons 9 are fitted with the square holes 6. The length of the tenons 9 is greater than the thickness of the wall panel 3. During construction, the wall panels 3 of each retaining wall are placed side by side, and the two tenons 9 on the load-unloading plate 7 are inserted into the adjacent square holes 6 between two adjacent wall panels 3, and the load-unloading plate 7 presses on the rib column 4 of the retaining wall, thereby realizing the articulated connection between the retaining walls at all levels. The configuration of the assembled retaining wall is as shown in Figure 1 - Figure 4 shown, which is a reinforced concrete precast structure, and the rib column 4 and the wall panel 3 are precast together.

[0041] One end of the load-unloading plate 7 is provided with a baffle 8 perpendicular to the plate body, and the width of the load-unloading plate 7 is smaller than the width of the wall panel 3, as shown in Figure 5 shown. The mutual assembly between the precast retaining wall and the load-unloading plate 7 is as shown in Figure 6 shown.

[0042] The width and height of the tenon 9 are both smaller than the corresponding width and height of the square hole 6, and the length of the tenon 9 is greater than the thickness of the wall panel 3, that is, under normal construction accuracy, the tenon 9 can be conveniently inserted into the square hole 6, as shown in Figure 6 shown.

[0043] The center distance between the two tenons 9 on the load-unloading plate 7 is equal to the center distance between two adjacent square holes 6 when two precast retaining walls are placed side by side, that is, the load-unloading plate 7 can assemble two adjacent precast retaining walls together, as shown in Figure 6 shown.

[0044] At the top of the rib column 4, a first round hole 5 is provided. On the plate body of the unloading plate 7 near the convex tenon 9, a second round hole with the same structure as the first round hole 5 is provided. After the unloading plate 7 and the wall panel 3 are assembled, the first round hole 5 on the rib column 4 and the corresponding second round hole on the unloading plate 7 are at the same plumb position. After inserting the fixing rod 10 into the corresponding first round hole 5 and second round hole, the hinged connection between the precast retaining wall and the unloading plate 7 can be realized. Here, the convex tenon 9 on the unloading plate 7 is made of steel and is cast together with the reinforced concrete plate of the unloading plate 7. Obviously, the steel convex tenon 9 needs to be fixed together with the steel bars inside the unloading plate 7.

[0045] The four walls of the square hole 6 are made of steel and are cast together with the reinforced concrete plate of the wall panel 3, and the four steel walls of the square hole 6 are fixed together with the steel bars inside the wall panel 3.

[0046] The outer wall of the round hole 5 is made of steel and is cast in situ with the reinforced concrete plate. The fixing rod 10 is made of steel. After the fixing rod 10 is inserted into the corresponding upper and lower round holes 5, the hinged connection between the wall panel 3 and the unloading plate 7 can be realized, and it can withstand large stress concentration. The outer diameter of the fixing rod 10 is smaller than the inner diameter of the round hole 5.

[0047] A support assembly is installed on the bottom surface of the unloading plate 7. The support assembly includes a telescopic rod installed on the bottom surface of the unloading plate 7 and an abutting block 14 fixed at the end of the telescopic rod away from the unloading plate 7. The telescopic rod is inclined, and the abutting block 14 abuts against the back surface of the wall panel 3. The telescopic rod includes a movable rod 13, a fixed rod 11 detachably fixed on the bottom surface of the unloading plate 7, and a threaded sleeve 12 rotatably sleeved on the other end of the fixed rod 11. The fixed rod 11 is fixed on the bottom surface of the unloading plate 7 by bolts, and bolt holes for connecting bolts are also provided on the bottom surface of the unloading plate 7. One end of the movable rod 13 is fixed with a screw rod, and the screw rod is threadedly sleeved inside the threaded sleeve 12. The abutting block 14 is fixed at the other end of the movable rod 13. After the unloading plate 7 is installed on the wall panel 3, the length of the telescopic rod is adjusted. When adjusting, rotate the threaded sleeve 12 clockwise while holding the movable rod 13 to prevent it from rotating. At this time, the screw rod starts to move away from the fixed rod 11 until the abutting block 14 abuts against the back surface of the wall panel 3 and then stop rotating the threaded sleeve, so that the unloading plate 7 can be supported by the telescopic rod.

[0048] During the construction process, known techniques should be used to perform anti-rust treatment on the steel convex tenon 9, the four steel walls of the square hole 6, the steel round hole 5, and the steel fixing rod 10.

[0049] The implementation principle of this embodiment is as follows: During construction, the first step is to level the site, and construct a reinforced concrete cast-in-place bottom slab at the position where the retaining wall is to be constructed. A capping beam is set in front of the bottom slab, and the capping beam can prevent the retaining wall from slipping under the action of horizontal loads. If the bearing capacity of the foundation does not meet the requirements, foundation treatment is also required in advance.

[0050] In the second step, arrange each precast retaining wall on the concrete floor in sequence, and adopt auxiliary measures to firmly connect adjacent retaining walls so that they will not move or be misaligned with each other under the action of subsequent construction loads. As Figure 7 shown, the front end of the toe slab 1 of the base should abut against the coping beam on the floor. In addition, a variety of well-known technologies should be adopted to ensure a firm connection between the retaining wall and the floor so that no slip failure will occur under the action of subsequent earth pressure.

[0051] In the third step, carry out earth filling at the back of the wall panel 3 according to relevant filling requirements until it reaches the top position of the rib column 4. As Figure 8 shown.

[0052] In the fourth step, assemble the unloading plate 7, insert the two convex tenons 9 on the unloading plate 7 into the adjacent square holes 6 between two adjacent precast retaining walls, and press the unloading plate 7 on the rib column 4 of the retaining wall. The baffle 8 at the end of the unloading plate 7 is pressed into the soil so that the unloading plate 7 is basically horizontal. After the fixing rod 10 is inserted into the corresponding upper and lower round holes 5, articulated connection between each level of retaining walls is realized. Then adjust the length of the telescopic rod so that the abutting block 14 abuts against the bottom surface of the wall panel 3. As Figure 9 and Figure 10 shown.

[0053] In the fifth step, continue to carry out earth filling at the back of the retaining wall according to relevant filling requirements until it reaches the top position of the wall panel 3. As Figure 11 - Figure 13 shown.

[0054] Other methods can also be adopted to strengthen the connection between each precast retaining wall. For example, a coping beam is constructed at the top of the wall panel 3 to improve the integrity of the retaining wall.

[0055] Embodiment 2:

[0056] Combined with Figure 4 、 Figure 6 , on the basis of Embodiment 1, the further improvement of this embodiment lies in that: a clamping hole 15 that matches the abutting block 14 is formed on the back surface of the wall panel 3. When the abutting block abuts against the wall panel 3, align the abutting block 14 and insert it into the clamping hole 15, so that the abutting block 14 is stuck inside the clamping hole 15, avoiding the sliding of the clamping block 14, and further ensuring the stability of the telescopic rod support.

[0057] A plurality of anti-slip protrusions are fixed on the outer wall of the baffle 8 away from the unloading plate 7. The anti-slip protrusions can effectively increase the friction between the baffle 8 and the soil, and further improve the anti-slip stability of the retaining wall.

[0058] The above embodiments are only preferred embodiments of the present invention, and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention fall within the scope of protection required by the present invention.

Claims

1. An assembled retaining wall with a movable unloading plate, comprising a prefabricated retaining wall and a unloading plate, characterized in that: The prefabricated retaining wall comprises a base, a wall panel fixed on the top of the base and two rib columns fixed on the back of the wall panel, the base comprises a wall toe plate located on the front part of the wall panel and a wall heel plate located on the back part of the wall panel, and two square holes are provided on the back of the wall panel at the top of the rib columns; Two tenons are provided at one end of the unloading plate, which match the square holes. The length of the tenons is greater than the thickness of the wall panel. A supporting assembly is installed on the bottom surface of the unloading plate. The supporting assembly includes a telescopic rod installed on the bottom surface of the unloading plate and an abutment block fixed to the end of the telescopic rod away from the unloading plate. The telescopic rod is arranged obliquely, and the abutment block abuts against the back of the wall panel.

2. The assembled retaining wall with a movable unloading plate according to claim 1 is characterized in that: A first circular hole is arranged at the top of the rib column, a second circular hole identical to the first circular hole is opened on the plate body of the unloading plate close to the tenon, and a fixing rod matching the second circular hole is inserted into the first circular hole.

3. The assembled retaining wall with a movable unloading plate according to claim 1 is characterized in that: A baffle is arranged at one end of the unloading plate away from the tenon.

4. The assembled retaining wall with a movable unloading plate according to claim 1 is characterized in that: The telescopic rod includes a movable rod, a fixed rod detachably fixed to the bottom surface of the unloading plate and a threaded sleeve rotatably sleeved on the other end of the fixed rod. A screw is fixed at one end of the movable rod, and the screw is threadably sleeved inside the threaded sleeve. The abutment block is fixed at the other end of the movable rod.

5. The assembled retaining wall with a movable unloading plate according to claim 1, characterized in that: The back side of the wall panel is provided with a clamping hole which matches with the abutment block.

6. The assembled retaining wall with a movable unloading plate according to claim 3 is characterized in that: A plurality of anti-slip protrusions are fixed on the outer wall of one side of the baffle away from the unloading plate.

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