Quickly-spliced concrete prefabricated lining plate assembly
By designing overlapping support slopes and pressing slopes on reinforced concrete precast slabs, and combining them with the use of geomembranes and plastic waterproofing materials, the problems of poor stability and waterproofing effect of precast concrete slabs were solved, achieving higher stability and waterproofing performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA CONSTRUCTION EIGHTH ENGINEERING GROUP (SICHUAN) NEW ENERGY TECHNOLOGY CO LTD
- Filing Date
- 2025-05-20
- Publication Date
- 2026-05-01
AI Technical Summary
In existing technologies, precast concrete slabs formed by overlapping reinforced concrete slabs have poor stability and poor waterproofing at the joints.
An overlapping support slope or an overlapping pressing slope is formed on one side of a precast reinforced concrete slab. During assembly, the overlapping pressing slope of one slab overlaps and presses onto the overlapping support slope of the other slab, providing downward pressing force to improve stability. The bonding of geomembrane and plastic waterproofing material enhances the waterproofing and seepage prevention effect.
It improves the stability of precast concrete slabs and the waterproofing and seepage prevention at the joints, ensuring the safety and waterproofing performance of the repaired canal or riverbank slopes.
Smart Images
Figure CN224186679U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plate structure technology, specifically to a rapid assembly of precast concrete lining plate components for underwater use in flowing water conditions. Background Technology
[0002] During long-term water flow, the slopes of large canals or rivers are affected by numerous factors such as groundwater level, freeze-thaw cycles, construction quality, and external forces. This can lead to cracking, collapse, heaving, and buoyancy instability of the concrete lining slabs on the canal or river slopes, which adversely affects the structural safety and water supply capacity of the canals or rivers. When the concrete lining slabs on the canal or river slopes are damaged, the slope soil may soften, leading to instability of the canal or river slope due to water seepage. Therefore, it is necessary to promptly remove and repair the uncut concrete lining slabs to ensure the normal and safe water supply of the canals or rivers.
[0003] The process of dismantling and repairing the concrete lining slab to be cut includes cutting and removing the concrete lining slab to be cut, and then replacing it with a new lining slab. When replacing the lining slab, two 2m×4m reinforced concrete precast slabs are overlapped to form a 4m×4m concrete precast slab. Specifically, the vertical sides of the two 2m×4m reinforced concrete precast slabs are pressed together to form the 4m×4m concrete precast slab. The structure of this reinforced concrete precast slab results in relatively poor stability of the overlapped concrete precast slab, and the waterproofing effect at the overlap is also poor. Utility Model Content
[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a quick-assembly precast concrete lining panel assembly to solve the problems of relatively poor stability and poor waterproofing effect of precast concrete panels formed by overlapping reinforced concrete panels in the existing technology.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a rapid splicing precast concrete lining panel assembly, comprising a precast reinforced concrete panel assembly, wherein an overlapping support slope or an overlapping pressing slope is formed on one side of the precast reinforced concrete panel assembly.
[0006] During assembly, the overlapping pressing slope of one of the two precast reinforced concrete slabs overlaps and presses against the overlapping supporting slope of the other.
[0007] Compared with the prior art, the present invention has the following beneficial effects:
[0008] This rapid-assembly precast concrete lining panel assembly forms an overlapping support slope or overlapping pressing slope on one side of the precast reinforced concrete panel assembly. When two precast reinforced concrete panels are overlapped, the overlapping pressing slope of one panel overlaps and presses against the overlapping support slope of the other panel. One precast reinforced concrete panel provides a downward pressing force to the other panel, which helps to improve the stability of the two precast reinforced concrete panels after overlap. At the same time, after overlap, the relative pressing force makes the overlap more compact, resulting in better waterproofing and seepage prevention. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model. Figure 1 ;
[0010] Figure 2 This is a schematic diagram of the structure of an embodiment of the present utility model. Figure 2 ;
[0011] Figure 3 for Figure 1 A bottom view;
[0012] Figure 4 This is an assembly diagram of an embodiment of the present invention.
[0013] The reference numerals in the accompanying drawings include: 1. Precast reinforced concrete slab assembly, 101. Precast reinforced concrete slab, 1011. Reinforcing mesh, 102. Insulation board, 103. Geomembrane, 104. Overlap support slope, 105. Overlap pressing slope, 2. Pin groove. Detailed Implementation
[0014] The present invention will be further described in detail below through specific embodiments:
[0015] The process of dismantling and repairing the concrete lining slab to be cut involves cutting and removing the slab, followed by replacing it with a new one. When replacing the lining slab, two 2m x 4m reinforced concrete precast slabs are overlapped to form a 4m x 4m precast concrete slab. Specifically, the vertical sides of the two 2m x 4m slabs are pressed together to form the 4m x 4m slab. This structure of the reinforced concrete slab results in relatively poor stability of the overlapped slab. To address this issue, such as... Figure 1 , Figure 2 as well as Figure 4As shown in the figure, this utility model embodiment proposes a rapid splicing precast concrete lining slab assembly, including a reinforced concrete precast slab assembly 1. An overlapping support slope 104 or an overlapping pressing slope 105 is formed on one side of the reinforced concrete precast slab assembly 1. During assembly, the overlapping pressing slope 105 of one of the two reinforced concrete precast slab assemblies 1 overlaps and presses onto the overlapping support slope 104 of the other.
[0016] This rapid-assembly precast concrete lining panel assembly forms an overlapping support slope 104 or an overlapping pressing slope 105 on one side of the precast reinforced concrete panel assembly 1. When two precast reinforced concrete panel assemblies 1 overlap, the overlapping pressing slope 105 of one of them overlaps and presses against the overlapping support slope 104 of the other. One precast reinforced concrete panel assembly 1 provides a downward pressing force to the other, which helps to improve the stability of the two precast reinforced concrete panel assemblies 1 after overlapping. At the same time, after overlapping, the relative pressing force makes the overlap more compact, resulting in better waterproof and seepage prevention effects.
[0017] To better understand the precast reinforced concrete slab assembly 1 in this scheme, the following is a detailed explanation of the precast reinforced concrete slab assembly 1; for example... Figure 1 , Figure 2 as well as Figure 4 As shown, according to another embodiment of the present invention, the quick-assembly precast concrete lining slab assembly includes a precast reinforced concrete slab 101 and an insulation board 102, wherein a geomembrane 103 is bonded between the insulation board 102 and the precast reinforced concrete slab 101.
[0018] In this embodiment, the precast reinforced concrete slab assembly 1 mainly consists of a precast reinforced concrete slab 101, an insulation board 102, and a geomembrane 103. When the concrete lining slab to be cut is cut and removed, and it is found that the geomembrane 103 is damaged, it is necessary to cut and remove the geomembrane 103 and the insulation board 102 below it. Then, the precast reinforced concrete slab 101, the geomembrane 103, and the insulation board 102 are combined to form the precast reinforced concrete slab assembly 1, and then the insulation board 102, the geomembrane 103, and the precast reinforced concrete slab 101 are quickly repaired.
[0019] In order to achieve better fit after the two precast reinforced concrete slabs 1 overlap, a first assembly slope is formed on one side of the precast reinforced concrete slab 101 (specifically, it is formed by casting with a mold). The geomembrane 103 extends to cover all sides of the precast reinforced concrete slab 101 except the side away from the insulation board 102, and the geomembrane 103 covers the outer surface of the first assembly slope to form the overlapping support slope 104 or overlapping pressing slope 105.
[0020] After assembly, the two precast reinforced concrete slabs 101 are overlapped and bonded together by two geomembranes 103, and pressure is formed between the overlap support slope 104 and the overlap pressing slope 105 to improve the sealing performance, seepage prevention performance and waterproof performance, ensuring that there is no water seepage or leakage after the repair is completed.
[0021] The following steps need to be taken before assembly:
[0022] The insulation board 102 is prepared and the precast reinforced concrete slab 101 with a 45° angle on one side is poured. The inclined surface where the 45° angle is located is the first assembly inclined surface.
[0023] First, the geomembrane 103 is adhered to the bottom surface of the precast reinforced concrete slab 101 and the first assembly slope to cover it. Then, the top surface of the insulation board 102 is adhered to the bottom of the geomembrane 103, ensuring that one side of the insulation board 102 is aligned with the bottom edge of the first assembly slope and that the remaining sides of the insulation board 102 are located inside the bottom surface of the precast reinforced concrete slab 101. The geomembrane 103 is adhered to the first assembly slope to form the overlapping support slope 104 or overlapping pressing slope 105. At this time, the inclination angle of the overlapping support slope 104 or overlapping pressing slope 105 is 45°, so that the contact area is maximized and more stable when the two precast reinforced concrete slabs are assembled.
[0024] It should be noted that the geomembrane 103 is bonded to the precast reinforced concrete slab 101 and the insulation board 102 using a plastic waterproofing material. This plastic waterproofing material must be non-toxic and water-resistant, maintaining its bonding strength even after prolonged immersion in water. For example, the plastic waterproofing material may be SR plastic waterproofing material.
[0025] The repair process is as follows:
[0026] First, cut the concrete lining slab to be cut, then remove it;
[0027] Next, when the damage to the geomembrane 103 is detected, the geomembrane 103 and the insulation board 102 below the geomembrane 103 are cut and removed to form a backfill trench. However, the geomembrane 103 in the backfill trench is not completely removed. A 50cm wide geomembrane 103 is left around the inner edge of the backfill trench.
[0028] Then flatten the backfill trench;
[0029] Next, SR plastic waterproofing material is applied to the edges of the geomembrane of the precast reinforced concrete slab assembly on the shore. Then, the precast reinforced concrete slab assembly 1 with the overlapping support slope 104 is placed into the backfill trench. Next, the precast reinforced concrete slab assembly 1 with the overlapping pressing slope 105 is placed into the backfill trench, with the overlapping pressing slope 105 overlapping and pressing onto the overlapping support slope 104. Because one side of the insulation board 102 is aligned with the bottom edge of the first assembly slope and the other sides of the insulation board 102 are all located inside the bottom surface of the precast reinforced concrete slab 101 (e.g., Figure 3 If the insulation board 102 is cut off, the insulation board 102 is embedded in the original position where the insulation board 102 was cut off. The geomembrane 10 at the edge of the precast concrete slab assembly 1 overlaps with the geomembrane 103 reserved in the backfill trench and is bonded by SR plastic waterstop material.
[0030] Then, the pin groove 2 is used to pass through the overlapping pressing slope 105 and the overlapping support slope 104 in the vertical direction to lock the two reinforced concrete precast slab assembly 1, thereby improving the assembly stability of the two reinforced concrete precast slab assembly 1.
[0031] Finally, underwater epoxy coating adhesive is filled into the joint formed between the two precast reinforced concrete slabs 1 and the backfill joint formed between the precast reinforced concrete slab 1 and the backfill trench. The thickness of the underwater epoxy coating adhesive is about 2cm to complete the repair, which can better ensure waterproofing and seepage prevention.
[0032] This repair process is convenient and efficient, allowing the repair of the geomembrane 103 and insulation board 102 to be completed simultaneously during the installation of the precast reinforced concrete slab 101.
[0033] The insulation board 102 is a polystyrene insulation board 102. During processing, the surface of the polystyrene insulation board 102 should be uniform in color, flat, without obvious shrinkage or expansion deformation, and without obvious oil stains or impurities.
[0034] The distance between the bottom surface of the precast reinforced concrete slab 101 and the steel mesh 1011 inside it is 1 / 3 of the thickness of the precast reinforced concrete slab 101, which has sufficient structural strength; the precast reinforced concrete slab 101 has a length of 3.99m, a width of 1.99m, and a thickness of 10cm; the steel bars in the steel mesh 1011 have a diameter of 12mm and the spacing between two adjacent steel bars is 15cm.
[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. Rapidly spliced concrete precast lining panel assembly comprising a body of reinforced concrete precast panels, characterized in that, The precast reinforced concrete slab assembly has an overlapping support slope or an overlapping pressing slope on one side. During assembly, the overlapping pressing slope of one of the two precast reinforced concrete slabs overlaps and presses against the overlapping supporting slope of the other.
2. The rapid splice concrete precast lining panel assembly of claim 1, wherein, The inclination angle of the overlapping support slope or the overlapping pressing slope is 45°.
3. A rapid assembly concrete precast lining panel assembly according to claim 1 or 2, characterised in that, The precast reinforced concrete slab assembly includes: Precast reinforced concrete slabs; The insulation board is bonded to the precast reinforced concrete slab with a geomembrane.
4. The rapid-assembly precast concrete lining panel assembly according to claim 3, characterized in that, A first assembly slope is formed on one side of the precast reinforced concrete slab. The geomembrane extends to cover all sides of the precast reinforced concrete slab except the side away from the insulation board, and the geomembrane covers the outer surface of the first assembly slope to form the overlapping support slope or overlapping pressing slope.
5. The rapid-assembly precast concrete lining panel assembly according to claim 3, characterized in that, During assembly, the geomembrane is bonded to the precast reinforced concrete slab and the insulation board using a plastic waterproofing material.
6. The rapid-assembly precast concrete lining panel assembly according to claim 3, characterized in that, The distance between the bottom surface of the precast reinforced concrete slab and the steel mesh inside it is 1 / 3 of the thickness of the precast reinforced concrete slab.
7. The rapid splice concrete precast lining panel assembly of claim 3, wherein, The insulation board is a polystyrene insulation board.
8. The rapid-assembly precast concrete lining panel assembly according to claim 4, characterized in that, One side of the insulation board is aligned with the bottom edge of the first assembly slope, and the remaining sides of the insulation board are located inside the bottom surface of the precast reinforced concrete slab.
9. The rapid-assembly precast concrete lining panel assembly according to claim 1, characterized in that, During assembly, the two precast reinforced concrete slabs are locked together by pin slots passing through the overlapping pressing slope and the overlapping supporting slope.