A prefabricated box culvert splicing structure

Abstract

This utility model relates to the field of box culvert connection technology, specifically to a prefabricated box culvert splicing structure, comprising multiple box culverts connected in sequence, with adjacent box culverts connected by a socket joint, forming a splicing seam between adjacent box culverts. It also includes sealing rings and N-shaped plates. Each box culvert has an integrally formed annular flange on its left and right outer sides. The outer wall of the box culvert on the opposite sides of the two flanges has an annular groove. A sealing ring is fitted and fixed in each annular groove. The sealing ring is composed of cylindrical elastic rubber connected end to end, with the outer ring of the sealing ring extending out of its annular groove. Each splicing seam has N-shaped plates on its upper and lower outer sides. The upper parts of adjacent flanges on both sides of the splicing seam are secured by a groove on the inner side of the upper N-shaped plate. The upper parts of adjacent sealing rings on both sides of the splicing seam are secured and pressed by a groove on the inner side of the upper N-shaped plate. The two N-shaped plates are detachably connected. This utility model solves the problem of water seepage at the splicing seams between box culverts after assembly.

Description

Technical Field

[0001] This utility model relates to the field of box culvert connection technology, specifically to a prefabricated box culvert splicing structure. Background Technology

[0002] A box culvert is a precast concrete structure. A rectangular precast or cast-in-place concrete structure can evenly distribute the load. The top slab bears the earth pressure, the bottom slab provides support, and the side walls retain the soil. Multiple box culverts are connected to form a continuous culvert, which can be used as a drainage channel, pedestrian passage, or cable channel. The connection between box culverts is either a butt joint or a plug joint. After adjacent box culverts are connected, they are usually buried in the soil. After the two box culvert segments are connected, there will be splicing joints. Water can seep into the box culvert used for drainage through the splicing joints. This will increase the drainage load inside the box culvert and cause problems such as water seepage into the external soil layer. It may also cause water accumulation and dampness inside the box culvert used by pedestrians and equipment, affecting its use function. Water accumulation will accelerate the corrosion of the internal structure. The authorization announcement number CN223135000U "A Waterproof Structure for Prefabricated Box Culverts" also mentions the problem of water seepage at the joints between prefabricated box culverts. Utility Model Content

[0003] This utility model addresses the problem of water seepage at the joints between prefabricated box culverts after assembly, by providing a prefabricated box culvert splicing structure that can seal and waterproof the joints between adjacent box culverts.

[0004] To solve the above problems, the technical solution of this utility model is: A prefabricated box culvert splicing structure includes multiple box culverts connected in sequence, with adjacent box culverts connected by a socket joint, forming a splicing seam between adjacent box culverts. It also includes sealing rings and N-shaped plates. Each box culvert has an integrally formed annular flange on its left and right sides. The outer walls of the box culverts on opposite sides of the two flanges have annular grooves. A sealing ring is fitted and fixed within each annular groove. The sealing ring is composed of cylindrical elastic rubber connected end-to-end, with the outer ring extending out of its respective annular groove. Each splicing seam has N-shaped plates on its upper and lower sides. The upper parts of adjacent flanges on both sides of the splicing seam are secured by a groove on the inner side of the upper N-shaped plate. The upper parts of adjacent sealing rings on both sides of the splicing seam are secured and pressed by a groove on the inner side of the upper N-shaped plate. The two N-shaped plates are detachably connected.

[0005] Furthermore, the opening width of the annular groove is greater than the inner bottom width, and when the sealing ring is in its natural state, the opening width of the annular groove is greater than the distance between the inner and outer rings of the sealing ring.

[0006] Furthermore, the distance between the front and rear inner sides of the n-shaped plate corresponds to the distance between the front and rear outer sides of the box culvert; the upper end of the inner side of the n-shaped plate contacts the outer top surface of the box culvert on the left and right sides of the splice joint, respectively.

[0007] Furthermore, when the sealing ring is in its natural state, the width of the second groove is greater than the distance between the inner and outer rings of the corresponding sealing ring, and the depth of the second groove is less than the distance by which the sealing ring extends out of the annular groove.

[0008] Furthermore, the inner bottom corner of the annular groove has a rounded transition, and the first and second grooves are n-shaped grooves. The horizontal and vertical sections of the second groove have a rounded transition at the junction, and the inner bottom ends of the second groove also have a rounded transition.

[0009] Furthermore, connectors are provided between the front ends and rear ends of the two n-shaped plates outside the splice seam. The front connector includes a screw and a U-shaped plate. The front ends of the two n-shaped plates are in contact with each other. Screws are fixed to the front of the outer sides of the two n-shaped plates. The U-shaped plate is snapped onto the outer side between the front ends of the two n-shaped plates. A sealing gasket is provided on the inner side of the U-shaped plate to contact the outer sides of the two n-shaped plates. The end of each screw passes through the sealing gasket and the U-shaped plate. A nut is threaded onto the screw on the outer side of the U-shaped plate.

[0010] The beneficial effects of this utility model through the above technical solution are as follows: After the connection between adjacent box culverts is completed, two n-shaped plates are installed on the outside of the splice joint. During the installation process, the two n-shaped plates can compress the adjacent sealing rings on both sides of the splice joint. The compressed sealing rings can prevent external moisture from seeping into the box culvert through the splice joint, and can also prevent drainage box culverts from seeping out through the splice joint. Therefore, this utility model can play a role in sealing and waterproofing between box culverts.

[0011] The n-shaped plate of this invention can limit the horizontal displacement of adjacent box culverts and improve the stability between box culverts. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a structural schematic diagram of the box culvert of this utility model; Figure 3 This is a sectional front view of the adjacent box culvert of this utility model; Figure 4 This is a top sectional view of adjacent box culverts of this utility model (at the opposite ends of the n-shaped plate). Figure 5 yes Figure 4 Sectional view at point AA; Figure 6 This is a structural schematic diagram of the n-type plate of this utility model.

[0013] The attached diagram is labeled as follows: 1. Box culvert, 2. Socket, 3. Spiral, 4. Sealing ring, 5. N-shaped plate, 6. Flange, 7. Annular groove, 8. Slot 1, 9. Slot 2, 10. Screw, 11. U-shaped plate, 12. Nut, 13. Sealing gasket. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and specific embodiments: like Figures 1-6 As shown, a prefabricated box culvert splicing structure includes multiple box culverts 1 connected in sequence. Adjacent box culverts 1 are connected by a socket joint, forming a splicing seam between them. Each box culvert 1 has an annular socket 2 recessed at its left end and a corresponding insertion port 3 at its right end. The insertion port 3 of the left box culvert 1 extends into the socket 2 of the right box culvert 1. It also includes a sealing ring 4 and an n-shaped plate 5. Each box culvert 1 has an integrally formed annular flange 6 on both its left and right sides. The flange 6 is a rectangular annular body. The outer walls of the box culvert 1 on opposite sides of the two flanges 6 have annular grooves 7 recessed. The annular grooves 7 are arranged along the annular direction of the outer wall of the box culvert 1. Each annular groove 7 is fitted with a sealing ring 4, which is made of cylindrical elastic rubber connected end to end. The elastic rubber is neoprene rubber with high corrosion resistance. The outer ring of the sealing ring 4 extends out of the annular groove 7. Each splice seam has an n-shaped plate 5 on the upper and lower parts. The two n-shaped plates 5 are symmetrical. The upper parts of the adjacent flanges 6 on both sides of the splice seam are snapped by the slot 8 opened on the inner side of the upper n-shaped plate 5. The upper parts of the adjacent sealing rings 4 on both sides of the splice seam are snapped and pressed by the slot 9 opened on the inner side of the upper n-shaped plate 5. The sealing rings 4 in the two slots 9 are in a compressed state. The two n-shaped plates 5 can be detachably connected.

[0015] The opening width of the annular groove 7 is greater than the inner bottom width, and the inner bottom of the annular groove 7 is the side opposite to the opening of the annular groove 7; when the sealing ring 4 is in its natural state, the opening width of the annular groove 7 is greater than the distance between the inner and outer rings of the sealing ring 4.

[0016] The front and rear inner sides of the n-shaped plate 5 correspond to the front and rear outer sides of the box culvert 1; after the two slots 8 of the upper n-shaped plate 5 are snapped onto the upper outer side of the corresponding flange 6, the upper end of the inner side of the n-shaped plate 5 respectively contacts the outer top surface of the box culvert 1 on the left and right sides of the splice seam.

[0017] When the sealing ring 4 is in its natural state, the width of the second groove 9 is greater than the distance between the inner and outer rings of the corresponding sealing ring 4, and the depth of the second groove 9 is less than the distance by which the sealing ring 4 extends out of the annular groove 7.

[0018] The inner bottom corner of the annular groove 7 is rounded. The first groove 8 and the second groove 9 are n-shaped grooves. The longitudinal section of the first groove 8 and the second groove 9 are both rectangular. The upper part of the first groove 8 and the corresponding flange 6 are matched. The horizontal and vertical sections of the second groove 9 are rounded. The inner bottom end of the second groove 9 is rounded. The inner bottom of the second groove 9 is the side opposite to the opening. During installation, the inner bottom end of the second groove 9 can avoid damage to the sealing ring 4 due to the right angle.

[0019] Connectors are provided between the front and rear ends of the two n-shaped plates 5 outside the splice seam. The front connector includes a screw 10 and a U-shaped plate 11. The front ends of the two n-shaped plates 5 are in contact with each other. Screws 10 are fixed to the front of the outer side of the two n-shaped plates 5. The U-shaped plate 11 is snapped onto the outer side between the front ends of the two n-shaped plates 5. A sealing gasket 13 is provided on the inner side of the U-shaped plate 11 to contact the outer side of the two n-shaped plates 5. The end of each screw 10 passes through the sealing gasket 13 and the U-shaped plate 11. A nut 12 is threaded onto the screw 10 on the outer side of the U-shaped plate 11. The two side plates of the U-shaped plate 11 are respectively snapped onto the two sides between the front ends of the two n-shaped plates 5. The sealing gasket 13 is a sheet made of neoprene rubber.

[0020] During installation, after two adjacent box culverts 1 are connected by a socket joint, two n-shaped plates 5 are installed outside each joint. The upper n-shaped plate 5 is fitted over the joint from top to bottom. Each slot 8 on the n-shaped plate 5, with its vertical segment engaged with the upper vertical segment of the corresponding flange 6, moves downwards. During this downward movement, the vertical segment of slot 9 engages with the upper vertical segment of the corresponding sealing ring 4, gradually compressing the upper part of the sealing ring 4. The upper outer ring of the sealing ring 4 is pressed tightly against the inner bottom of the vertical segment of slot 9. This continues until the horizontal segment of slot 8 engages with the horizontal segment of the corresponding flange 6. At this point, the horizontal segment of slot 9 engages with the upper horizontal segment of the corresponding sealing ring 4, pressing it against the upper horizontal segment. The outer ring of the upper horizontal segment of the sealing ring 4 is pressed tightly against the inner bottom of the horizontal segment of slot 9. Similarly, the lower n-shaped plate 5 moves downwards and fits over the lower part of the joint until the ends of the two n-shaped plates 5 contact each other. At this point, the slot 9 of the lower n-shaped plate 5 engages with the lower part of the corresponding flange 6. Outside, the lower part of the sealing ring 4 is compressed, and the outer ring of the sealing ring 4 is pressed tightly against the inner bottom of the corresponding slot 9; then, the opposite ends of the two n-shaped plates 5 are snapped with the U-shaped plate 11, and the free end of the screw passes through the sealing gasket and the U-shaped plate 11. During the tightening of the nut 12, the nut 12 presses against the U-shaped plate 11, so that the sealing gasket 13 on the U-shaped plate 11 is compressed, which can prevent external moisture from seeping through the ends of the two n-shaped plates 5; at this time, the splice joint between adjacent box culverts 1 is protected, the sides of the two n-shaped plates 5 are attached to the outer wall of the box culvert 1 outside the splice joint, and the sealing rings 4 on both sides of the splice joint are compressed. External moisture can be blocked by the two compressed sealing rings 4, preventing it from entering the box culvert 1 through the splice joint, or when the moisture inside the box culvert 1 seeps through the splice joint from the inside to the outside, it can also be blocked by the two compressed sealing rings 4, preventing it from seeping into the soil layer; Furthermore, the adjacent box culverts 1 are connected by an n-shaped plate 5, which can limit the box culverts 1 when they are horizontally displaced by external forces, thereby improving the stability between the box culverts 1.

[0021] The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Any equivalent or equivalent modifications or substitutions to the technical solutions of the present utility model without departing from the spirit of the present utility model or the scope of disclosure shall fall within the protection scope of the present utility model.

Claims

1. A prefabricated box culvert splicing structure, comprising multiple box culverts (1) connected sequentially, adjacent box culverts (1) being connected by a socket joint, and splicing joints being formed between adjacent box culverts (1), characterized in that, It also includes a sealing ring (4) and an n-shaped plate (5). Each box culvert (1) has an integrally formed annular flange (6) on the left and right sides. The outer wall of the box culvert (1) on the opposite side of the two flanges (6) has an annular groove (7). A sealing ring (4) is fixedly fitted in each annular groove (7). The sealing ring (4) is made of cylindrical elastic rubber connected end to end. The outer ring of the sealing ring (4) extends out of the annular groove (7). Each splice joint has an n-shaped plate (5) on the upper and lower sides. The upper part of the flange (6) adjacent to each other on both sides of the splice joint is snapped by the first slot (8) opened on the inner side of the upper n-shaped plate (5). The upper part of the sealing ring (4) adjacent to each other on both sides of the splice joint is snapped and pressed by the second slot (9) opened on the inner side of the upper n-shaped plate (5). The two n-shaped plates (5) can be detachably connected.

2. The prefabricated box culvert splicing structure according to claim 1, characterized in that, The opening width of the annular groove (7) is greater than the inner bottom width. When the sealing ring (4) is in its natural state, the opening width of the annular groove (7) is greater than the distance between the inner and outer rings of the sealing ring (4).

3. The prefabricated box culvert splicing structure according to claim 1, characterized in that, The distance between the front and rear inner sides of the n-shaped plate (5) corresponds to the distance between the front and rear outer sides of the box culvert (1); the upper end of the inner side of the n-shaped plate (5) respectively contacts the outer top surface of the box culvert (1) on the left and right sides of the splice joint.

4. The prefabricated box culvert splicing structure according to claim 2, characterized in that, When the sealing ring (4) is in its natural state, the width of the second groove (9) is greater than the distance between the inner and outer rings of the corresponding sealing ring (4), and the depth of the second groove (9) is less than the distance by which the sealing ring (4) extends out of the annular groove (7).

5. The prefabricated box culvert splicing structure according to claim 1, characterized in that, The inner bottom corner of the annular groove (7) is rounded, the first groove (8) and the second groove (9) are n-shaped grooves, the horizontal and vertical sections of the second groove (9) are rounded, and the inner bottom ends of the second groove (9) are all rounded.

6. The prefabricated box culvert splicing structure according to claim 5, characterized in that, Connectors are provided between the front ends and rear ends of the two n-shaped plates (5) outside the splice seam. The connectors on the front side include screws (10) and U-shaped plates (11). The front ends of the two n-shaped plates (5) are in contact with each other. Screws (10) are fixed on the front of the outer side of the two n-shaped plates (5). The U-shaped plate (11) is snapped on the outer side between the front ends of the two n-shaped plates (5). A sealing gasket (13) is provided on the inner side of the U-shaped plate (11) to contact the outer side of the two n-shaped plates (5). The end of each screw (10) passes through the sealing gasket (13) and the U-shaped plate (11). A nut (12) is threaded onto the screw (10) on the outer side of the U-shaped plate (11).

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