A water conservancy project dam reinforcing structure

Abstract

The utility model relates to reinforcing structure technical field, especially a water conservancy project dike reinforcing structure, including soil embankment main part, the slope side of soil embankment main part from inside to outside has geogrid layer, gravel layer and concrete layer in proper order. The utility model has the advantages of: welding pressing plate in the welding groove of adjacent support frame, and further locking pressing plate with locking bolt, let the pressing plate bottom surface stick gravel layer, finally lay concrete layer, make reinforced cage and reinforcing platform cast as a whole. In the whole process, the base pile main part and the top cover cooperate to connect the reinforcing structure and the soil embankment main part deeply, the support frame and the pressing plate form the surface layer support net through welding and bolt locking, the concrete layer and the reinforced cage, gravel layer, geogrid layer are closely stuck, form the overall structure of'deep anchoring - middle layer support - surface protection', avoid the concrete layer and soil embankment main part peeling due to water flow impact, temperature change, greatly promote the stability and service life of reinforcing structure.

Description

Technical Field

[0001] This utility model relates to the field of reinforcement structure technology, and in particular to a reinforcement structure for dams in water conservancy projects. Background Technology

[0002] Dam reinforcement structures in water conservancy projects are protective systems that use specific materials, components, and construction techniques to strengthen the structure and optimize the performance of existing dams, thereby improving their resistance to seepage, erosion, and sliding. Their core definition can be summarized as follows: Addressing the structural performance degradation of dams caused by water erosion, soil seepage, and environmental erosion during long-term operation, a functional structure is constructed by adding external protective layers, internal support components, or drainage systems to create a synergistic "protection-support-drainage" system. This compensates for insufficient strength and stability of the dam itself, extends its service life, and reduces the risk of dam failure.

[0003] The current method of "slope concrete pouring" is commonly used for the reinforcement of dams in water conservancy projects. This method has significant limitations, making it difficult to meet the requirements for long-term stable operation of dams, and the overall reinforcement effect is poor. This single concrete slope reinforcement method attempts to resist water erosion by pouring a concrete layer on the upstream or downstream slope of the dam. However, the bonding between the concrete layer and the dam soil is poor, lacking an effective connecting structure. Under long-term impact from water flow, temperature changes, or soil settlement, the concrete layer is prone to peeling off from the dam body, forming cracks or voids. Once the cracks penetrate the concrete layer, the water flow will directly contact the dam soil, causing soil erosion and further expanding the crack range, rendering the reinforcement structure ineffective, and accelerating dam damage. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0005] Therefore, one objective of this utility model is to propose a reinforcement structure for water conservancy engineering dams to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0006] To achieve the above objectives, one embodiment of this utility model provides a dam reinforcement structure for a water conservancy project, comprising a soil revetment body. The slope side of the soil revetment body is sequentially covered with a geogrid layer, a gravel layer, and a concrete layer from the inside out. The inner wall of the soil revetment body is reinforced with a plurality of evenly distributed foundation piles cast in concrete. The slope side of the soil revetment body is fixedly fitted with a plurality of evenly distributed top sleeves using ground anchors. The tops of the foundation piles penetrate the geogrid layer and the gravel layer and are inserted into the top sleeves. A support frame is fixedly connected to the top of each top sleeve. A pressure plate is welded between every two adjacent left and right support frames. The bottom surface of the pressure plate is in contact with the top surface of the gravel layer. A reinforcing cage is welded between the support frames along the slope direction of the soil revetment body. The top surface of the concrete layer is reinforced with a plurality of linearly arrayed reinforcement platforms cast in concrete, and the reinforcing cages are respectively cast inside the reinforcement platforms.

[0007] Preferably, in any of the above schemes, the top and bottom of the slope of the soil embankment body are both supported by concrete foundations, and the geogrid layer and the crushed stone layer are laid between the two foundations.

[0008] Preferably, in any of the above schemes, the geogrid layer is made of polypropylene, and the crushed stone layer is made of granite crushed stone with uniform particle size.

[0009] Preferably, in any of the above solutions, the top surface of the support frame has two symmetrically arranged welding grooves, and the two welding grooves correspond to the two pressure plates respectively.

[0010] Preferably, in any of the above solutions, locking bolts are rotatably connected to both the left and right sides of the support frame, and the threaded parts of the two locking bolts are respectively threaded to the two pressure plates.

[0011] Preferably, the top sleeve and the pressure plate are both made of stainless steel, and the axis of the main body of the foundation pile coincides with that of the top sleeve.

[0012] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows: 1. This structure solves the problems of poor bonding and easy peeling between the traditional single concrete layer and the dam body by connecting multiple components collaboratively. During construction, several foundation piles are first poured into the inner wall of the soil embankment. The geogrid layer is then laid on the slope side of the soil embankment, with the top of the foundation pile penetrating through it. Then, a crushed stone layer is laid. Subsequently, the top sleeve is fixed to the slope side of the soil embankment with locking nails, so that the top of the foundation pile is inserted into the top sleeve. Next, a support frame is fixed to the top of the top sleeve, and the pressure plate is welded into the welding groove of the adjacent support frame. The pressure plate is further locked with locking bolts, so that the bottom surface of the pressure plate is in contact with the crushed stone layer. Finally, a concrete layer is laid, so that the reinforcing cage and the reinforcement platform are cast as one piece. Throughout the process, the main body of the foundation pile and the top sleeve work together to deeply connect the reinforcement structure with the main body of the soil embankment. The support frame and pressure plate are locked together by welding and bolts to form a surface support net. The concrete layer is closely bonded to the steel cage, crushed stone layer and geogrid layer to form an integrated structure of "deep anchoring - middle support - surface protection". This prevents the concrete layer from peeling off from the main body of the soil embankment due to water flow impact and temperature changes, and greatly improves the stability and service life of the reinforcement structure.

[0013] 2. This structure addresses the shortcomings of traditional single-layer concrete structures in resisting erosion and deformation through a combination of multiple materials and components. During construction, a polypropylene geogrid layer is laid on the main slope of the soil embankment. Its grid structure disperses soil stress and restricts soil displacement. A granite crushed stone layer is laid on top of the geogrid layer. Its high hardness resists water erosion of the underlying structure, while the pores of the crushed stone facilitate drainage, reducing the softening of the soil embankment by water immersion. The stainless steel top sleeve and pressure plate have strong corrosion resistance and can withstand long-term water impact and environmental erosion. Combined with the support frame, the support system buffers the impact of external forces on the concrete layer. The concrete layer, reinforcement platform, and steel cage further strengthen surface protection, resisting wave impact and rainwater erosion. The synergistic effect of each layer and component not only enhances the overall scour resistance of the embankment slope, but also adapts to slight settlement deformation of the soil embankment through the flexibility of the geogrid layer, the buffering effect of the gravel layer, and the support of the metal components. This avoids cracks in the reinforced structure due to soil deformation, significantly optimizes the overall reinforcement effect of the embankment, and reduces the risk of piping and slope collapse. Attached Figure Description

[0014] Figure 1 This is a first-view structural diagram of the assembly of this utility model; Figure 2 This is a second-view structural diagram of the assembly of this utility model; Figure 3 This is an exploded structural diagram of the assembly of this utility model; Figure 4 This is a schematic diagram of the main structure of the foundation pile of this utility model; Figure 5This is an exploded structural diagram of the support frame of this utility model.

[0015] In the diagram: 1-Soil embankment main body, 2-Geogrid layer, 3-Gravel layer, 4-Concrete layer, 5-Foundation pile main body, 6-Top sleeve, 7-Support frame, 8-Pressure plate, 9-Reinforcing cage, 10-Reinforcing platform, 11-Foundation, 12-Welding groove, 13-Locking bolt. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited thereto.

[0017] like Figures 1 to 5 As shown, a dam reinforcement structure for a water conservancy project includes a soil revetment body 1. From the inside out, a geogrid layer 2, a gravel layer 3, and a concrete layer 4 are sequentially laid on the slope side of the soil revetment body 1. Several evenly distributed foundation pile bodies 5 are cast into the inner wall of the soil revetment body 1 using concrete pouring. Several evenly distributed top sleeves 6 are fixedly installed on the slope side of the soil revetment body 1 using ground anchors. The tops of the foundation pile bodies 5 penetrate the geogrid layer 2 and the gravel layer 3 and are inserted into the top sleeves 6. A support frame 7 is fixedly connected to the top of each top sleeve 6. A pressure plate 8 is welded between every two adjacent support frames 7. The bottom surface of the pressure plate 8 is in contact with the top surface of the gravel layer 3. A reinforcing cage 9 is welded between the support frames 7 along the slope direction of the soil revetment body 1. Several linearly arrayed reinforcement platforms 10 are cast into the top surface of the concrete layer 4 using concrete pouring. Several reinforcing cages 9 are cast into the interior of the reinforcement platforms 10.

[0018] As an optional technical solution of this utility model, the top and bottom of the slope of the soil embankment body 1 are both reinforced with concrete platforms 11. The geogrid layer 2 and the crushed stone layer 3 are laid between the two platforms 11. The platforms 11 can provide stable boundary support for the geogrid layer 2 and the crushed stone layer 3, restrict the displacement of the two layers at the top and bottom of the slope, and prevent the two layers from separating from the edge due to water flow impact or soil settlement. At the same time, the platforms 11 are tightly integrated with the soil embankment body 1 through concrete material, forming the "boundary fixed end" of the reinforcement structure, further improving the overall synergy between the geogrid layer 2, the crushed stone layer 3 and the soil embankment body 1, and ensuring the stability of the multi-layer reinforcement structure.

[0019] As an optional technical solution of this utility model, the geogrid layer 2 is made of polypropylene, and the crushed stone layer 3 is made of granite crushed stone with uniform particle size. The geogrid layer 2 is made of polypropylene, which has high strength and anti-aging properties that can disperse soil stress and limit soil displacement for a long time. It is also resistant to water and soil erosion and can adapt to the humid environment of the dam. The crushed stone layer 3 is made of granite crushed stone with uniform particle size. Granite has high hardness and strong wear resistance, which can effectively resist water erosion and avoid crushed stone loss due to friction or impact. At the same time, the pores formed by the uniform particle size can stably realize the drainage function and reduce the accumulation of water in the slope. The durability and functionality of the double-optimized reinforcement structure are enhanced.

[0020] As an optional technical solution of this utility model, the top surface of the support frame 7 is provided with two symmetrically arranged welding grooves 12, which correspond to the two pressure plates 8 respectively. The two symmetrical welding grooves 12 on the top surface of the support frame 7 are precisely aligned with the pressure plates 8, providing a positioning reference for the welding of the pressure plates 8, ensuring that the pressure plates 8 can quickly and accurately connect with the support frame 7, and preventing the pressure plates 8 from shifting during welding. At the same time, the welding grooves 12 can increase the welding contact area between the pressure plates 8 and the support frame 7, improve the connection strength of the welded part, prevent the pressure plates 8 from falling off the support frame 7 when subjected to external impact, and ensure the stability of the support system.

[0021] As an optional technical solution of this utility model, locking bolts 13 are rotatably connected to both the left and right sides of the support frame 7. The threaded parts of the two locking bolts 13 are respectively threaded to the two pressure plates 8. The locking bolts 13 on the left and right sides of the support frame 7 are threaded to the pressure plates 8, which can further strengthen the connection between the pressure plates 8 and the support frame 7 on the basis of welding, and prevent the pressure plates 8 from shifting due to loosening of the welding points during long-term use. At the same time, the tightness of the locking bolts 13 can be flexibly adjusted, which makes it easy to fine-tune the fit of the pressure plates 8 according to the laying of the crushed stone layer 3 during construction, ensuring that the bottom surface of the pressure plates 8 is tightly attached to the crushed stone layer 3, better compacting the crushed stone layer 3 and distributing the force.

[0022] As an optional technical solution of this utility model, the top sleeve 6 and the pressure plate 8 are both made of stainless steel. The axis of the pile body 5 and the top sleeve 6 coincide. The top sleeve 6 and the pressure plate 8 are made of stainless steel, which has strong corrosion resistance and structural strength. They can resist the humid environment and water erosion of the dam slope, maintain the performance of the components for a long time, and avoid connection failure due to rust. The axis of the pile body 5 and the top sleeve 6 coincide, which can ensure that the supporting force of the pile body 5 on the top sleeve 6 is evenly transmitted, and avoid the top sleeve 6 from affecting the positional stability of the support frame 7 and the pressure plate 8 due to force displacement, thus ensuring the force balance of the entire support system.

[0023] A dam reinforcement structure for water conservancy projects, the working principle of which is as follows: 1): During construction, first pour several foundation piles 5 into the inner wall of the soil embankment body 1, then lay the geogrid layer 2 on the slope side of the soil embankment body 1 and let the top of the foundation piles 5 penetrate through, and then lay the crushed stone layer 3.

[0024] 2): Fix the top sleeve 6 to the slope side of the soil embankment body 1 with ground nails, so that the top of the foundation pile body 5 is inserted into the top sleeve 6. Then fix the support frame 7 at the top of the top sleeve 6, weld the pressure plate 8 into the welding groove 12 of the adjacent support frame 7, and further lock the pressure plate 8 with locking bolts 13 so that the bottom surface of the pressure plate 8 is in contact with the crushed stone layer 3.

[0025] 3): Finally, the concrete layer 4 is laid to integrate the reinforcing cage 9 with the reinforcement platform 10. Throughout the process, the main body of the foundation pile 5 and the top sleeve 6 work together to deeply connect the reinforcement structure with the main body of the soil embankment 1.

[0026] In summary, the dam reinforcement structure of this water conservancy project uses the main pile 5 and the top sleeve 6 to deeply connect the reinforcement structure with the main soil protection dam 1. The support frame 7 and the pressure plate 8 are locked together by welding and bolts to form a surface support mesh. The concrete layer 4 is tightly bonded to the steel cage 9, the crushed stone layer 3, and the geogrid layer 2, forming an integrated structure of "deep anchoring - intermediate support - surface protection". This prevents the concrete layer 4 from peeling off from the main soil protection dam 1 due to water flow impact and temperature changes, greatly improving the stability and service life of the reinforcement structure. The stainless steel top sleeve 6 and pressure plate 8 have strong corrosion resistance and can withstand water flow impact and environmental erosion for a long time. The support system formed by the support frame 7 can buffer the external impact on the concrete layer 4. The concrete layer 4, combined with the reinforcement platform 10 and the steel cage 9, further strengthens the surface protection and resists wave impact and rainwater erosion. The synergistic effect of each layer and component not only enhances the overall scour resistance of the embankment slope, but also adapts to slight settlement deformation of the soil embankment body 1 through the flexibility of the geogrid layer 2, the buffering effect of the crushed stone layer 3, and the support of the metal components, avoiding cracks in the reinforced structure due to soil deformation, significantly optimizing the overall reinforcement effect of the embankment, and reducing the risk of piping and slope collapse.

Claims

1. A reinforcement structure for dams in water conservancy projects, characterized in that: The structure includes a soil embankment body (1), on which a geogrid layer (2), a gravel layer (3), and a concrete layer (4) are laid sequentially from the inside to the outside on the slope side. The inner wall of the soil embankment body (1) is reinforced with concrete and has several evenly distributed pile bodies (5). The slope side of the soil embankment body (1) is fixed with several evenly distributed top sleeves (6). The tops of several pile bodies (5) penetrate the geogrid layer (2) and the gravel layer (3) and are inserted into the top sleeves (6). Each of the top sleeves (6) is fixedly connected to a support frame (7), and a pressure plate (8) is welded between every two adjacent left and right support frames (7). The bottom surface of the pressure plate (8) is in contact with the top surface of the gravel layer (3). A steel cage (9) is welded between several support frames (7) along the slope direction of the soil embankment body (1). Several linear array of reinforcing platforms (10) are poured on the top surface of the concrete layer (4). Several steel cages (9) are poured into the interior of several reinforcing platforms (10).

2. The water conservancy project dam reinforcement structure according to claim 1, characterized in that: The top and bottom of the slope of the soil embankment (1) are both reinforced with concrete and have foundations (11). The geogrid layer (2) and the crushed stone layer (3) are laid between the two foundations (11).

3. The water conservancy project dam reinforcement structure according to claim 2, characterized in that: The geogrid layer (2) is made of polypropylene, and the crushed stone layer (3) is made of granite crushed stone with uniform particle size.

4. The water conservancy project dam reinforcement structure according to claim 3, characterized in that: The top surface of the support frame (7) has two symmetrically arranged welding grooves (12), and the two welding grooves (12) correspond to the two pressure plates (8) respectively.

5. The water conservancy project dam reinforcement structure according to claim 4, characterized in that: Locking bolts (13) are rotatably connected to both sides of the support frame (7), and the screws of the two locking bolts (13) are threadedly connected to the two pressure plates (8).

6. The water conservancy project dam reinforcement structure according to claim 5, characterized in that: The top sleeve (6) and the pressure plate (8) are both made of stainless steel, and the axis of the pile body (5) coincides with that of the top sleeve (6).

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