Concrete paver and side slope concrete lining method
By combining the bottom and upper precast concrete slabs with the design of heat pipe holes, the problem of the flow of cast-in-place concrete on the slope of the retaining wall was solved, achieving accurate shaping and surface flatness of the concrete, and improving connection strength and construction efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- XINJIANG WATER RESOURCES & HYDROPOWER SURVEY DESIGN & RES INST CO LTD
- Filing Date
- 2025-12-15
- Publication Date
- 2026-05-08
AI Technical Summary
Cast-in-place concrete tends to flow slowly down the slope of the retaining wall, resulting in a thicker bottom concrete and a thinner top concrete, and the drying and setting time is prolonged in high humidity environments.
The bottom and top layers of precast concrete slabs are combined with top overflow grooves and filling holes. The cast-in-place concrete is fixed by filling from bottom to top. The slope and filling grooves are used to increase the contact area. Heat pipe holes are set to accelerate drying and shaping. A paving roller is used to ensure a smooth surface.
It effectively prevents the tilting and flow of cast-in-place concrete, improves connection strength, shortens drying and setting time, and ensures surface flatness and appearance quality.
Smart Images
Figure CN121992745A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of slope protection construction technology, specifically to a concrete paver and a method for constructing concrete linings for slopes. Background Technology
[0002] Currently, riverbank protection is generally carried out by integral concrete pouring to cover the river slope. Covering the slope with concrete can prevent water loss on both sides of the river, thereby reducing the sediment content in the downstream river and avoiding problems such as river siltation in the downstream area.
[0003] When constructing a slope using concrete pouring, the un-dried concrete material flows downwards along the slope because the processing surface is sloping. This results in the concrete being thicker at the bottom and thinner at the top of the slope. However, revetment slopes are usually built on both sides of the river, close to the water surface, which results in high humidity in the construction environment, prolonging the drying and setting time of the concrete, and thus exacerbating the slow flow of the concrete.
[0004] In view of this, we propose a concrete paver and a method for concrete lining of slopes. Summary of the Invention
[0005] The purpose of this invention is to provide a concrete paver and a method for lining concrete slopes to solve the problem of cast-in-place concrete slowly flowing down the slope of the retaining wall as mentioned in the background art.
[0006] To achieve the above objectives, the present invention provides a concrete revetment, comprising a revetment body having a sloping surface; a bottom precast concrete slab and an upper precast concrete slab are fixedly disposed on the sloping surface of the revetment body, and a paving section is slidably disposed on the top of the revetment body, wherein: the upper precast concrete slab has a through top overflow groove, the bottom precast concrete slab has a bottom-sealed bottom overflow groove, and the top overflow groove and the bottom overflow groove are connected; the upper precast concrete slab is located above the bottom precast concrete slab, and slopes are provided on both sides of the bottom precast concrete slab and the upper precast concrete slab, with a plurality of filling grooves provided on the slopes; the bottom filling holes and the top filling holes are connected to form a channel for cast-in-place concrete to enter, so that the cast-in-place concrete is fixed to the top and bottom of the precast slab; the slopes are combined to form a triangular flow area, so that the cast-in-place concrete is fixed to both sides of the precast slab; the paving section makes the top of the cast-in-place concrete flat.
[0007] As a further improvement to this technical solution, a bottom filling hole is provided in the bottom overflow groove of the bottom precast concrete slab, and the bottom filling hole is duckbill shaped; a top filling hole is provided in the top overflow groove of the upper precast concrete slab, and the shape of the top filling hole is the same as that of the bottom filling hole, and the bottom filling hole is connected to the top filling hole.
[0008] As a further improvement to this technical solution, the top filling hole is set through the upper precast concrete slab, and there is a gap between the bottom of the bottom filling hole and the bottom of the bottom overflow groove, with the gap being no less than centimeters.
[0009] As a further improvement to this technical solution, top blocking protrusions are provided on both sides of the bottom of the upper precast concrete slab, and the top blocking protrusions are located at the bottom of the slopes on both sides of the upper precast concrete slab; bottom blocking protrusions are provided on both sides of the bottom of the bottom precast concrete slab, and the bottom blocking protrusions are located at the bottom of the slopes on both sides of the bottom precast concrete slab, with the height of the bottom blocking protrusions being higher than the height of the top blocking protrusions.
[0010] As a further improvement to this technical solution, the upper precast concrete slab is symmetrically provided with connecting heat source holes on both sides of the top overflow groove; the bottom precast concrete slab is provided with U-shaped bottom heat pipe holes inside, which are distributed on the outside of the bottom overflow groove and are connected to the connecting heat source holes.
[0011] As a further improvement to this technical solution, the paving section includes a cast-in-place concrete container that slides with the top of the revetment body. The cast-in-place concrete container contains cast-in-place concrete and is equipped with a pressure pump inside. The top of the cast-in-place concrete container has a through-hole for filling. A triangular nozzle and a duckbill nozzle are respectively connected through to both sides of the cast-in-place concrete container. The triangular nozzle is used to fill the triangular flow area with cast-in-place concrete, and the duckbill nozzle is used to inject the cast-in-place concrete into the top filling hole.
[0012] As a further improvement to this technical solution, a sliding frame is rotatably provided on the side of the cast-in-place concrete container. Sliding waist-shaped holes are provided on both sides of the sliding frame. A rotating shaft is slidably provided on the inner wall of the sliding waist-shaped holes. A paving roller is fixed on the outer arc surface of the rotating shaft. A winding assembly for pulling the rotating shaft is provided on the top outer surface of the sliding frame.
[0013] As a further improvement to this technical solution, the winding assembly includes a rotary motor and a winding roller fixedly connected to the output end of the rotary motor. The rotary motor is fixedly connected to the sliding frame, and the winding roller is rotatably connected to the outer surface of the sliding frame. Connecting parts are rotatably provided at both ends of the rotating shaft, and the connecting parts are connected to the winding roller through connecting ropes.
[0014] As a further improvement to this technical solution, when the inclination angle of the slope of the retaining wall is less than 45°, the height of the top blocking protrusion shall not be less than half the height of the upper precast concrete slab; when the inclination angle of the slope of the retaining wall is greater than or equal to 45°, the height of the top blocking protrusion shall not be less than two-thirds of the height of the upper precast concrete slab.
[0015] A method for constructing concrete retaining walls, applicable to a type of concrete retaining wall, includes the following steps: Lay the bottom precast concrete slab at the bottom of the slope of the retaining wall, and then align and lay the upper precast concrete slab above the bottom precast concrete slab. The cast-in-place concrete is poured into a cast-in-place concrete container, mixed and pressurized, and then poured into the top filling hole through a duckbill-shaped nozzle. After entering the top filling hole, the cast-in-place concrete flows into the bottom filling hole and overflows into the bottom overflow groove. Finally, the cast-in-place concrete fills the top overflow groove upwards. Align the triangular nozzle with the triangular flow area and allow the cast-in-place concrete to flow into the triangular flow area, filling the groove with the cast-in-place concrete; By rolling the paving roller back and forth above the triangular flow area, the top of the cast-in-place concrete in the triangular flow area is compressed and spread by the paving roller, so that the top of the cast-in-place concrete is flat and the same height as the bottom and upper precast concrete slabs.
[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In this concrete revetment and concrete revetment construction method, the cast-in-place concrete is injected into the interior of the precast slab through the internal structure of the bottom precast concrete slab and the upper precast concrete slab (such as the top overflow groove and the bottom overflow groove filling hole), forming a bottom-up filling method. The precast slab limits the cast-in-place concrete to prevent it from tilting and flowing, thereby ensuring the accuracy of the inclination angle of the revetment slope.
[0017] 2. In this concrete revetment and concrete revetment construction method, the precast slabs are provided with slopes and filling grooves on both sides. When the cast-in-place concrete fills the triangular flow area formed by the slope, the filling grooves increase the contact area between the concrete and the precast slab, enhance the adhesion and fixing effect of the cast-in-place concrete during the drying and shaping process, improve the connection strength between the precast slabs, and prevent loosening.
[0018] 3. In this concrete revetment and concrete revetment construction method, since the revetment construction is often near water and the ambient humidity is high, the concrete drying time is extended. By setting bottom heat pipe holes and connecting heat source holes in the precast slab, external heat sources (such as high-temperature steam) can be used to heat the concrete, promote the rapid drying and shaping of the internal cast-in-place concrete, and shorten the construction cycle.
[0019] 3. In this concrete revetment and concrete revetment construction method, through the design of the paving section, the cast-in-place concrete can be rolled and squeezed by the paving roller after filling, ensuring that the top is flat and the height is consistent with the precast slab, avoiding the problem of uneven surface in traditional construction, and improving the appearance quality and functionality of the revetment. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall structure assembly of the present invention; Figure 2 for Figure 1 Enlarged view of the structure at point A in the middle; Figure 3 This is a schematic diagram of the combined splicing of the bottom precast concrete slab and the upper precast concrete slab in this invention; Figure 4 This is a schematic diagram of the bottom structure of the upper precast concrete slab in this invention; Figure 5 This is a top cross-sectional view of the bottom precast concrete slab and the upper precast concrete slab in this invention. Figure 6 This is a flowchart of the steps of the present invention.
[0021] The labels in the diagram represent the following: 1. Retaining wall body; 2. Bottom precast concrete slab; 21. Bottom blocking protrusion; 22. Bottom filling hole; 23. Bottom overflow groove; 24. Bottom heat pipe hole; 3. Upper precast concrete slab; 31. Top overflow groove; 32. Top filling hole; 33. Connecting heat source hole; 34. Slope; 35. Filling groove; 36. Top blocking protrusion; 4. Paving section; 41. Cast-in-place concrete container; 42. Triangular nozzle; 43. Duckbill nozzle; 44. Sliding frame; 45. Rewinding assembly; 46. Paving roller. Detailed Implementation
[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0023] Example 1 Please see Figures 1-6 As shown, this embodiment provides a concrete revetment, including a revetment body 1. The top of the revetment body 1 is provided with a bottom precast concrete slab 2 and an upper precast concrete slab 3. During the process of reinforcing the slope of the revetment with concrete, since the actual location of the revetment is usually close to the water surface, the humidity of the surrounding environment of the revetment is relatively high, which reduces the drying and setting speed of the concrete. However, the concrete is in a gel-like state before drying and setting and has a certain fluidity. Therefore, the concrete will flow down the slope of the revetment before drying and setting, resulting in more concrete accumulating at the bottom of the revetment and less concrete at the top. To improve the effectiveness of concrete reinforcement near the water surface, a combination of precast concrete slabs and cast-in-place concrete is typically used to shorten the drying and setting time of the cast-in-place concrete portion, thereby reducing its tendency to tilt and flow. However, the current method of combining precast concrete slabs and cast-in-place concrete mainly achieves the fixing effect of the precast slab by pre-laying the precast concrete slab and then spreading the cast-in-place concrete on the top surface of the precast concrete slab. The use of precast slabs reduces the amount of cast-in-place concrete used, thereby reducing its tendency to tilt and flow. However, during the process of covering and pouring with cast-in-place concrete, since it is located on top of the precast concrete slab, it still has fluidity on the top surface of the precast concrete. As a result, the thickness of the cast-in-place concrete on top of the precast concrete slab at the top of the slope is lower, while the thickness of the cast-in-place concrete on top of the precast concrete slab at the bottom of the slope is higher, which leads to uneven fixing effect of the precast slab. To improve the problem of uneven fixing of precast concrete slabs, the upper precast concrete slab is provided with a through top overflow groove 31, and a top filling hole 32 is provided in the top overflow groove 31. The bottom precast concrete slab 2 is provided with a bottom overflow groove 23 and a bottom filling hole 22 corresponding to the top overflow groove 31 and the top filling hole 32. The top overflow groove 31 and the top filling hole 32, as well as the bottom overflow groove 23 and the bottom filling hole 22, can be used to fill the bottom precast concrete slab 2 and the upper precast concrete slab 3 with cast-in-place concrete. The bottom precast concrete slab 2 and the upper precast concrete slab 3 limit the cast-in-place concrete part, thereby preventing it from flowing at an angle. Specifically, during the process of adding cast-in-place concrete into the top overflow trough 31 and bottom overflow trough 23, the presence of air inside the precast slab hinders the concrete from entering these troughs. Therefore, bottom filling holes 22 and top filling holes 32 are added inside the top overflow trough 31 and bottom overflow trough 23, respectively. By adding cast-in-place concrete into the bottom filling holes 22 and top filling holes 32, the concrete fills these holes and flows downwards until it reaches the bottom of the bottom precast concrete slab 2. Because there is a gap between the bottom filling hole 22 and the bottom of the bottom overflow trough 23, when the cast-in-place concrete flows to the bottom of the bottom precast concrete slab 2, it will exit through the bottom filling hole. The concrete overflows from 22 into the bottom overflow trough 23. As the filling continues, the concrete inside the bottom precast concrete slab 2 will gradually rise, and during the rising process, the air inside will be squeezed out. This bottom-up filling method can reduce the occurrence of voids inside the bottom overflow trough 23 and facilitate the air to be vented from the top to the outside. As the concrete gradually rises, it will enter the top overflow trough 31, and a small amount of concrete will overflow from the gap between the bottom precast concrete slab 2 and the upper precast concrete slab 3 and fill the gap between the bottom precast concrete slab 2 and the upper precast concrete slab 3. Finally, when the concrete rises to the top of the top overflow trough 31, it achieves the effect of filling the concrete inside the bottom precast concrete slab 2 and multiple upper precast concrete slabs 3 in the current vertical column. By fixing and limiting the cast-in-place concrete through the internal structure of the bottom precast concrete slab 2 and the upper precast concrete slab 3, the flow of the cast-in-place concrete can be restricted when the cast-in-place concrete fully fills the internal space of the bottom precast concrete slab 2 and the upper precast concrete slab 3. This prevents the cast-in-place concrete from tilting and flowing on the sloping surface. The bottom precast concrete slab 2 and the upper precast concrete slab 3 effectively fix the cast-in-place concrete, overcoming the problems existing in the traditional combined casting method. To ensure the stable connection and fixation of the bottom precast concrete slab 2 and the upper precast concrete slab 3, it is necessary to pour cast-in-place concrete on both sides of the bottom precast concrete slab 2 and the upper precast concrete slab 3. The bottom precast concrete slab 2 and the upper precast concrete slab 3 are then connected and fixed together by the cast-in-place concrete. This is to improve the stability of the connection and fixation of the bottom precast concrete slab 2 and the upper precast concrete slab 3. The bottom precast concrete slab 2 and the upper precast concrete slab 3 are symmetrically provided with slopes 34 on both sides. Several equally spaced linearly distributed filling grooves 35 are provided on the slope surface of the slopes 34. The upper precast concrete slab 3 has top blocking protrusions 36 on both sides of its bottom, and the bottom precast concrete slab 2 has bottom blocking protrusions 21 on both sides of its bottom. The bottom blocking protrusions 21 are higher than the top blocking protrusions 36. The slopes 34 connected on both sides can form a triangular flow area. By pouring cast-in-place concrete into this triangular area, the bottom precast concrete slab 2 and the upper precast concrete slab 3 can be filled and fixed on both sides, thereby fixing the bottom precast concrete slab 2 and the upper precast concrete slab 3 on both sides. Furthermore, the triangular flow area can prevent the cast-in-place concrete from overflowing to both sides, ensuring accurate side filling. Specifically, by setting equally spaced filling grooves 35 on the slope 34, the contact area between the filling cast-in-place concrete and the sides of the two adjacent bottom precast concrete slabs 2 or upper precast concrete slabs 3 can be increased, thereby improving the filling and fixing effect of the cast-in-place concrete on the slope 34 on both sides of the bottom precast concrete slab 2 or upper precast concrete slab 3. The principle behind filling groove 35 to effectively improve the fixing effect of cast-in-place concrete is disclosed here: By adding a filling groove 35 to the surface of the slope 34, the total contact area between the slope 34 and the cast-in-place concrete can be increased. Since the cast-in-place concrete is in a flowing state before drying and setting, it will fill into the filling groove 35 when filling the triangular flow area. Subsequently, during the drying and setting process of the cast-in-place concrete, the cast-in-place concrete can bond and fix the bottom concrete precast slabs 2 or the upper concrete precast slabs 3 on both sides through its own viscosity. The filling groove 35 generates a larger contact area, which can improve the bonding stability.
[0024] To achieve rapid drying and setting of the internal cast-in-place concrete, bottom heat pipe holes 24 and connecting heat source holes 33 are respectively provided in the bottom precast concrete slab 2 and the upper precast concrete slab 3. The bottom heat pipe holes 24 and the connecting heat source holes 33 are perpendicularly connected. The bottom heat pipe holes 24 are U-shaped inside the bottom precast concrete slab 2. The connecting heat source holes 33 penetrate through both sides of the upper precast concrete slab 3. After the top overflow groove 31 and the bottom overflow groove 23 are fully filled with cast-in-place concrete, the external heat source (such as high-temperature steam) is connected to the connecting heat source holes 33, so that the heat source can form a heat circulation through the connecting heat source holes 33 and the bottom heat pipe holes 24, thereby heating the interior of the bottom precast concrete slab 2 and the upper precast concrete slab 3. Heating the bottom precast concrete slab 2 and the upper precast concrete slab 3 can effectively improve the drying and setting speed of the internal cast-in-place concrete.
[0025] When the cast-in-place concrete is used to fill the triangular flow area, there are problems such as the uneven height between the surface of the cast-in-place concrete and the bottom precast concrete slab 2 or the upper precast concrete slab 3, or the uneven top of the cast-in-place concrete. Therefore, the revetment body 1 also includes a paving section 4, which includes a cast-in-place concrete container 41 that slides with the top of the revetment body 1. The cast-in-place concrete container 41 contains cast-in-place concrete, and a pressure pump is installed inside the cast-in-place concrete container 41. A through-hole is provided at the top of the cast-in-place concrete container 41, and triangular nozzles 42 and duckbill nozzles 43 are respectively connected through to both sides of the cast-in-place concrete container 41. The triangular nozzles 42 are used to fill the cast-in-place concrete into the triangular flow area, and the duckbill nozzles 43 are used to connect with the top filling hole 32, thereby filling the cast-in-place concrete into the top filling hole 32. The pressure pump installed inside the cast-in-place concrete container 41 can pressurize the cast-in-place concrete, so that it can be sprayed out from the duckbill nozzles 43 and triangular nozzles 42 to achieve the effect of filling the cast-in-place concrete. Furthermore, a sliding frame 44 is rotatably provided on the side of the cast-in-place concrete container 41. The sliding frame 44 has sliding waist-shaped holes on both sides. A rotating shaft is slidably provided on the inner wall of the sliding waist-shaped holes. A paving roller 46 is fixedly provided on the outer arc surface of the rotating shaft. A winding assembly 45 for pulling the rotating shaft is provided on the top outer surface of the sliding frame 44. By paving the concrete by the paving roller 46 rolling and spreading it at the top of the triangular flow area, the top of the cast-in-place concrete can be made flat and the same height as the bottom precast concrete slab 2 or the upper precast concrete slab 3, ensuring that the cast-in-place concrete is filled accurately and flat. Furthermore, by pressing the bottom precast concrete slab 2 or the upper precast concrete slab 3 downward by the paving roller 46, it can be fully attached to the slope of the retaining body 1, reducing the voids between the precast slab and the retaining body 1 during the pre-laying process.
[0026] The combination of the paving section 4 with the bottom precast concrete slab 2 and the upper precast concrete slab 3 can achieve the effect of quickly processing and paving concrete on the slope of the retaining body 1. In the initial stage, the bottom precast concrete slab 2 is laid on the bottom of the slope of the retaining body 1 and fixed by an external auxiliary fixing structure to form the bottom layer of precast slabs. The bottom precast concrete slab 2 is fixed to the bottom of the slope of the retaining body 1 by an external auxiliary fixing structure to form the bottom layer of precast slabs. Then, the upper layer of precast concrete slab 3 is pre-laid on top of the bottom precast concrete slab 2, and the upper layer of precast concrete slab 3 is aligned with the bottom precast concrete slab 2. During the cast-in-place stage, after the bottom precast concrete slab 2 and the upper precast concrete slab 3 are laid, the paving section 4 is placed on top of the retaining body 1 and can slide horizontally along the direction of the retaining body 1 to achieve the effect of fixing the bottom precast concrete slab 2 and the upper precast concrete slab 3 with cast-in-place concrete. The duckbill-shaped nozzle 43 in the paving section 4 is connected to the top filling hole 32 of the upper precast concrete slab 3, and the triangular nozzle 42 is connected to the triangular flow area formed by the slopes 34 on both sides of the upper precast concrete slab, thereby achieving the filling and fixing effect of the cast-in-place concrete. During the filling process, the cast-in-place concrete located inside the top filling hole 32 enters to the bottom along the top filling hole. The bottom filling hole 22 is filled, and then overflows from the bottom filling hole 22 into the bottom overflow groove 23, and then upwards until it enters the top overflow groove 31, so as to achieve the effect of filling and fixing the bottom concrete precast slab 2 and the upper concrete precast slab 3. This process realizes the fixed connection between the bottom concrete precast slab 2 and the upper concrete precast slab 3. The cast-in-place concrete located in the triangular flow area is sealed and filled by the filling grooves 35 on both sides of the slope 34, so as to achieve full contact with the bottom concrete precast slab 2 and the upper concrete precast slab 3 on both sides of the triangular flow area, and achieves the effect of connecting and fixing the bottom concrete precast slab 2 and the upper concrete precast slab 3 on both sides during its drying and shaping process. During the paving stage, the cast-in-place concrete inside the triangular flow area has been filled. The top of the triangular flow area is rolled and squeezed by the paving roller 46 to make the top of the cast-in-place concrete flat. This process keeps the top of the cast-in-place concrete flat and ensures that the height of the top of the cast-in-place concrete is the same as the height of the bottom precast concrete slabs 2 and the upper precast concrete slabs 3 on both sides, thus ensuring the accuracy of the cast-in-place process.
[0027] Example 2 Please see Figures 1-6 As shown, this embodiment provides a concrete revetment construction method, including the following steps: S1 Precast slab laying: The bottom precast concrete slab 2 and the upper precast concrete slab 3 are evenly laid on the inclined surface of the retaining body 1. The bottom precast concrete slab 2 is located at the bottom of the inclined surface of the retaining body 1, and the bottom precast concrete slab 2 is laid only one horizontal layer high. Several upper precast concrete slabs 3 are laid on the top of the bottom precast concrete slab 2. The top overflow groove 31 of the upper precast concrete slab 3 is aligned with the bottom overflow groove 23 of the bottom precast concrete slab 2. The S2 precast slab is filled by aligning the duckbill-shaped nozzle 43 in the paving section 4 with the top filling hole 32 of the upper precast concrete slab 3, thereby injecting cast-in-place concrete into the top filling hole 32. During the injection process, the cast-in-place concrete located inside the top filling hole 32 enters the bottom filling hole 22 along the top filling hole, and then overflows from the bottom filling hole 22 into the bottom overflow groove 23, and then rises until it enters the top overflow groove 31, thereby achieving the effect of fixing the bottom precast concrete slab 2 and the upper precast concrete slab 3 with the filling.
[0028] The S3 precast slab is fixed on both sides. The triangular nozzle 42 in the paving section 4 can fill the triangular flow area formed by the combination of the bottom concrete precast slab 2 and the upper concrete precast slab 3 on both sides of the slope 34 with cast-in-place concrete. During the filling process, the cast-in-place concrete enters and fills the filling groove 35 set on the surface of the slope 34 through its own fluidity. The filling groove 35 can increase the contact area between the cast-in-place concrete and the slope 34 on both sides of the bottom concrete precast slab 2 and the upper concrete precast slab 3, thereby improving its fixing effect on both sides of the bottom concrete precast slab 2 and the upper concrete precast slab 3. S4 is a leveling process. The paving roller 46 in the paving section 4 rolls and presses the top of the triangular flow area, which makes the top of the cast-in-place concrete inside the triangular flow area flat and its height consistent with the height of the bottom precast concrete slab 2 and the top precast concrete slab 3 on both sides. The paving and pressing method reduces the gaps between the bottom precast concrete slab 2, the top precast concrete slab 3 and the slope of the retaining body 1. At the same time, it makes the cast-in-place concrete in the triangular flow area, the slope 34 and the filling groove 35 more compact, ensuring the fixation effect of the cast-in-place concrete.
[0029] The above steps enable rapid concrete processing of the inclined surface of the retaining body 1. Compared with the traditional concrete pouring process, this device overcomes the problem of natural concrete flow caused by the inclined surface. Furthermore, the combination of precast slabs and cast-in-place concrete reduces the amount of cast-in-place concrete used, thereby accelerating the drying and shaping speed of the cast-in-place concrete.
[0030] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.
Claims
1. A concrete retaining wall, comprising a retaining wall body (1), the retaining wall body (1) having an inclined surface, characterized in that: The retaining wall body (1) is fixedly provided with a bottom precast concrete slab (2) and an upper precast concrete slab (3) on its sloping surface, and a paving section (4) is provided slidingly on the top of the retaining wall body (1), wherein: The upper precast concrete slab (3) is provided with a through top overflow groove (31), and the bottom precast concrete slab (2) is provided with a bottom-sealed bottom overflow groove (23). The top overflow groove (31) and the bottom overflow groove (23) are connected. The upper precast concrete slab (3) is located above the bottom precast concrete slab (2). The bottom precast concrete slab (2) and the upper precast concrete slab (3) are provided with slopes (34) on both sides, and several filling grooves (35) are provided at the slopes (34) on both sides. The bottom filling hole (22) and the top filling hole (32) are connected to form a channel for cast-in-place concrete to enter, so that the cast-in-place concrete is fixed to the top and bottom of the precast slab; the ramp (34) is combined to form a triangular flow area, so that the cast-in-place concrete is fixed to both sides of the precast slab; the paving part (4) makes the top of the cast-in-place concrete flat.
2. The concrete retaining wall according to claim 1, characterized in that: The bottom precast concrete slab (2) has a bottom filling hole (22) in the bottom overflow groove (23), which is duckbill shaped; the top precast concrete slab (3) has a top filling hole (32) in the top overflow groove (31), which is the same shape as the bottom filling hole (22), and the bottom filling hole (22) and the top filling hole (32) are connected.
3. The concrete retaining wall according to claim 2, characterized in that: The top filling hole (32) is set through on the upper concrete precast slab (3), and there is a gap between the bottom of the bottom filling hole (22) and the bottom of the bottom overflow groove (23), which is not less than 15 cm.
4. The concrete retaining wall according to claim 3, characterized in that: The upper precast concrete slab (3) has top blocking protrusions (36) on both sides of the bottom. The top blocking protrusions (36) are located at the bottom of the slopes (34) on both sides of the upper precast concrete slab (3). The bottom precast concrete slab (2) has bottom blocking protrusions (21) on both sides of the bottom. The bottom blocking protrusions (21) are located at the bottom of the slopes (34) on both sides of the bottom precast concrete slab (2). The height of the bottom blocking protrusions (21) is higher than the height of the top blocking protrusions (36).
5. The concrete retaining wall according to claim 4, characterized in that: The upper precast concrete slab (3) is symmetrically provided with connecting heat source holes (33) on both sides of the top overflow groove (31); the bottom precast concrete slab (2) is provided with U-shaped bottom heat pipe holes (24) inside, the bottom heat pipe holes (24) are distributed on the outside of the bottom overflow groove (23), and the bottom heat pipe holes (24) are connected with the connecting heat source holes (33).
6. The concrete retaining wall according to claim 5, characterized in that: The paving section (4) includes a cast-in-place concrete container (41) that slides on the top of the retaining body (1). The cast-in-place concrete container (41) contains cast-in-place concrete. A pressure pump is installed inside the cast-in-place concrete container (41). A through filling port is provided on the top of the cast-in-place concrete container (41). A triangular nozzle (42) and a duckbill nozzle (43) are respectively connected through the two sides of the cast-in-place concrete container (41). The triangular nozzle (42) is used to fill the triangular flow area with cast-in-place concrete, and the duckbill nozzle (43) is used to inject the cast-in-place concrete into the top filling hole (32).
7. The concrete retaining wall according to claim 6, characterized in that: The cast-in-place concrete container (41) is provided with a sliding frame (44) on its side. The sliding frame (44) has sliding waist-shaped holes on both sides. A rotating shaft is slidably provided on the inner wall of the sliding waist-shaped hole. A paving roller (46) is fixedly provided on the outer arc surface of the rotating shaft. A winding assembly (45) for pulling the rotating shaft is provided on the top outer surface of the sliding frame (44).
8. The concrete retaining wall according to claim 7, characterized in that: The winding assembly (45) includes a rotating motor and a winding roller fixedly connected to the output end of the rotating motor. The rotating motor is fixedly connected to the sliding frame (44), and the winding roller is rotatably connected to the outer surface of the sliding frame (44). Connecting parts are rotatably provided at both ends of the rotating shaft, and the connecting parts are connected to the winding roller through connecting ropes.
9. The concrete retaining wall according to claim 8, characterized in that: When the inclination angle of the slope of the retaining body (1) is less than 45°, the height of the top blocking protrusion (36) shall not be less than half the height of the upper precast concrete slab (3); when the inclination angle of the slope of the retaining body (1) is greater than or equal to 45°, the height of the top blocking protrusion (36) shall not be less than two-thirds of the height of the upper precast concrete slab (3).
10. A method for constructing concrete retaining walls, applied to the concrete retaining wall as described in any one of claims 1-9, characterized in that, Includes the following steps: Lay the bottom precast concrete slab (2) on the bottom of the slope of the retaining body (1), and align the upper precast concrete slab (3) above the bottom precast concrete slab (2). The cast-in-place concrete is poured into the cast-in-place concrete container (41), stirred and pressurized, and then poured into the top filling hole (32) through the duckbill nozzle (43). After entering the top filling hole (32), the cast-in-place concrete flows into the bottom filling hole (22) and overflows into the bottom overflow groove (23). Finally, the cast-in-place concrete fills the top overflow groove (31) upwards. Align the triangular nozzle (42) with the triangular flow area and allow the cast-in-place concrete to flow into the triangular flow area, thereby filling the filling groove (35) with the cast-in-place concrete; The paving roller (46) is rolled back and forth above the triangular flow area. By paving the top of the cast-in-place concrete in the triangular flow area by the paving roller (46), the top of the cast-in-place concrete can be made flat and the height is the same as the bottom precast concrete slab (2) and the upper precast concrete slab (3).