Square rain and sewage culvert tail end blocking stop block and construction method

Abstract

The invention relates to the technical field of rainwater and sewage pipe culvert construction, in particular to a rainwater and sewage square culvert tail end plugging stop block and a construction method.The rainwater and sewage square culvert tail end plugging stop block comprises a plugging block, the side end face of the plugging block is of a right trapezoid structure with the narrow upper portion and the wide lower portion, the upstream face of the plugging block is a vertical face, and the downstream face of the plugging block is an inclined face; second haunch angles matched with the first haunch angles at the bottom of the square culvert are arranged on the two sides of the bottom of the plugging block respectively, and a hanging ring is arranged at the top of the plugging block. The gravity type trapezoidal structure with the narrow upper portion and the wide lower portion is adopted, the anti-floating capacity and the anti-overturning capacity are high, large-flow and high-flow-speed water flow impact can be resisted, the check blocks are prefabricated parts and only need to be hoisted in place on site, the underwater operation risk is avoided, the plugging construction time is greatly shortened, and a follow-up construction working face can be rapidly provided.

Description

Technical Field

[0001] This invention relates to the field of stormwater and sewage pipe culvert construction technology, specifically to a stormwater and sewage square culvert end sealing block and construction method. Background Technology

[0002] During municipal engineering construction, especially in the construction of underground integrated pipe corridors and sewage pipelines outside the corridors in old urban areas, the sealing of the ends of rainwater and sewage pipes (culverts) is the most common problem encountered. Inadequate sealing of the original pipes often leads to leakage accidents during later excavation and structural construction. Furthermore, sewage leakage or sudden surges can cause significant damage to the urban environment and seriously affect the normal lives of urban residents.

[0003] Existing methods for sealing sewage pipes include manual underwater sealing and sealing with gabion mesh and poured concrete. For pipes with smaller diameters or smaller sewage flow rates, methods such as airbag sealing are used.

[0004] For sealing storm and sewage culverts during municipal construction, the large size, flow rate, and velocity of the culverts result in significant impact forces. While manual underwater sealing is effective, it carries substantial risks and low safety, easily leading to accidents. The method of using masonry gabions combined with concrete pouring is suitable for sealing culverts with smaller flow rates, but is impractical during concrete pouring when the flow is high, thus limiting its effectiveness. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a sealing block and construction method for the end of a stormwater and sewage culvert. It is applicable to the sealing construction of stormwater and sewage culverts of various sizes and water flows, and features fast construction speed, good results, and high safety.

[0006] The technical solution adopted by this invention to solve its technical problem is: A stormwater and sewage culvert end sealing block includes a sealing block, the side end face of which is a right-angled trapezoidal structure that is narrower at the top and wider at the bottom. The water-facing side of the sealing block is a vertical surface, and the water-repellent side is an inclined surface. The bottom of the sealing block is provided with two axle angles on both sides that are adapted to the axle angle one at the bottom of the culvert. The top of the sealing block is provided with a lifting ring.

[0007] Compared with the prior art, the beneficial effects of the present invention are: This invention adopts a gravity trapezoidal structure that is narrow at the top and wide at the bottom, which has strong anti-buoyancy and anti-overturning capabilities and can withstand the impact of large flow and high velocity water flow. The block is a prefabricated component, which only needs to be hoisted into place on site, avoiding the risks of underwater operation, greatly shortening the sealing construction time, and quickly providing a working surface for subsequent construction.

[0008] As a preferred embodiment, a further technical solution of the present invention is: Preferably, the sealing block has grooves on both sides and the bottom, and the grooves are filled with a water-swellable material.

[0009] Preferably, the groove includes a first groove located above the axillary corner and a second groove located below the axillary corner and the sealing block, wherein the width of the first groove is greater than the width of the second groove.

[0010] Preferably, the first groove is filled with both water-swellable material and square timber, and the second groove is filled with water-swellable material.

[0011] Preferably, the top length of the sealing block is greater than or equal to 0.5 mm, the width is less than the net width of the culvert by 0.05 m to 0.07 m, and its height is at least 0.3 m higher than the top of the culvert.

[0012] Preferably, the slope of the sealing block is 1:0.3.

[0013] This invention also relates to a construction method for a sealing block at the end of a stormwater and sewage culvert, the specific steps of which are as follows: S1. First, determine the size of the sealing block based on the water flow rate and the dimensions of the stormwater and sewage culvert; S2. Erecting the bottom formwork: Erect the bottom formwork according to the dimensions of the sealing blocks; S3. Reinforcing bar binding: Design relevant reinforcement according to the size of the sealing block, and bind the reinforcing bars of the sealing block on the laid bottom formwork. When binding the reinforcing bars, the inclined surface of the sealing block is on top and the vertical surface is on the bottom. S4. Embedded lifting rings; S5, formwork support; S6. Pouring concrete; S7. After the sealing block is prefabricated, the water-swellable sealing material is installed in groove one and groove two and fixed with cement nails; S8. Installation of sealing blocks: After hoisting the sealing blocks to the appropriate position, insert the square timber into the first groove to seal the gap between the culvert wall and the sealing blocks. Then, set a pressure plate on the top of the square timber and fix the pressure plate to the sealing blocks. The installation is now complete.

[0014] This invention solves the problems of poor safety, incomplete sealing, construction limitations, and long construction period in existing stormwater and sewage culvert end sealing technologies by using comprehensive technical means such as structural stability design, multiple water-stopping systems, and prefabricated assembly construction. It has significant technological progress and practical value. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 yes Figure 1 Top view; Figure 3 This is a structural diagram of the installation and culvert; Figure 4 This is a schematic diagram of a water-swellable material being fixed. Explanation of reference numerals in the attached diagram: 1. Sealing block; 2. Armpit corner one; 3. Armpit corner two; 4. Groove one; 5. Groove two; 6. Water-swellable material; 7. Square timber; 8. Lifting ring; 9. Pressure plate; 10. Square culvert; 11. Cement nail. Detailed Implementation

[0016] The present invention will be further illustrated below with reference to specific embodiments. The purpose of this illustration is solely to provide a better understanding of the invention. Therefore, the examples given do not limit the scope of protection of the present invention.

[0017] like Figures 1 to 4 As shown, a stormwater and sewage culvert end sealing block includes a sealing block 1. One side of the sealing block 1 is vertical, and the other side is inclined. The overall side end face has a right-angled trapezoidal structure that is narrower at the top and wider at the bottom. The water-facing side of the sealing block 1 is vertical, and the water-repellent side is inclined. In this embodiment, the slope ratio of the water-repellent side of the sealing block 1 is 1:0.3. The top length of the sealing block 1 is greater than or equal to 0.5 mm, the width is less than the net width of the culvert 10 by 0.05 m to 0.07 m, and its height is at least 0.3 m higher than the top of the culvert 10.

[0018] The bottom of the sealing block 1 is provided with two axle angles 3 on both sides, which are adapted to the axle angle 2 at the bottom of the culvert 10.

[0019] The sealing block 1 has grooves on both sides and at the bottom. The grooves consist of a first groove 4 located above the armpit corner and a second groove 5 located below the armpit corner and at the bottom of the sealing block 1. The width of the first groove 4 is greater than the width of the second groove 5. The first groove 4 is filled with water-swellable material 6 and square timber 7, while the second groove 5 is filled with water-swellable material 6. In this embodiment, the water-swellable material 6 is a water-swellable sealing strip, which is fixed to the sealing block 1 using cement nails 11.

[0020] Two lifting rings 8 are fixedly connected to the top of the sealing block 1 along its width direction. The lifting rings 8 are made of round steel and have a diameter of 28mm or more. The positions of the two lifting rings 8 can be determined according to the size of the sealing block 1.

[0021] In this embodiment, the sealing block 1 is a precast concrete structure, and the specific steps are as follows: S1. First, calculate the dimensions of the sealing block 1 based on the water flow rate and the dimensions of the stormwater and sewage culvert 10.

[0022] S2. Erecting the bottom formwork: Pour a flat ground as the precast foundation for the sealing block 1. Erect the bottom formwork according to the size of the sealing block. The bottom formwork can be made of wood or thick plastic sheeting. If thick plastic sheeting is used, it is necessary to ensure that the flatness of the foundation ground meets the specifications.

[0023] S3. Reinforcing bar binding: Design the relevant reinforcement according to the calculated dimensions of the sealing block 1. Bind the reinforcing bars of the sealing block on the laid bottom formwork. When binding the reinforcing bars, the inclined surface of the sealing block 1 should be on top and the vertical surface should be on the bottom. When binding the inclined reinforcing bars, attention should be paid to the lap size and the accuracy of the cutting.

[0024] S4. Pre-embedded lifting ring 8: Pre-embed the lifting ring 8 according to the calculated position. The diameter of the lifting ring 8 is d, and the pre-embedded length of the lifting ring 8 is greater than 15d.

[0025] S5. Formwork support: When supporting the formwork, the lower part of the sealing block 1 is set with the axle angle 2 3 according to the axle angle 1 2 of the culvert 10 to ensure that the dimensions of axle angle 2 3 match those of axle angle 1 2; and groove 1 4 and groove 2 5 are reserved.

[0026] S6. Concrete pouring: Fine aggregate concrete is used to ensure pouring quality. During pouring, the concrete must be vibrated properly to avoid collision with the pre-embedded lifting ring 8. Ensure that the position of the lifting ring 8 does not shift and ensure the dimensions of groove 1 4 and groove 2 5 are accurate.

[0027] S7. After the sealing block 1 is prefabricated, the water-swellable sealing strip is installed in groove 4 and groove 5, and cement nails 11 are added at intervals to fix it. The water-swellable sealing ring is nailed to the sealing block 1 to prevent misalignment when the sealing block 1 is hoisted, and at the same time to ensure that the water-swellable sealing ring is firmly attached to the concrete surface.

[0028] S8. When installing the sealing block 1, after hoisting it to the appropriate position, insert the square timber 7 into the groove 4 to seal the gap between the wall of the culvert 10 and the sealing block 1. The square timber 7 should be as close as possible to one side of the culvert body of the culvert 10 to prevent water from flowing. At the same time, ensure that the square timber 7 is in close contact with the water-swellable sealing strip behind it to achieve a double water-stopping effect. Then, set a pressure plate 9 on the top of the square timber 7. The pressure plate 9 is made of steel plate and has holes. Use expansion screws to fix the pressure plate 9 to the surface of the sealing block 1 to prevent the square timber 7 from floating.

[0029] This invention adopts a gravity-type structure, which has good stability and can resist the impact of large flow of water; a reliable water-stopping system is formed by water-swellable material and square timber in the groove, resulting in good sealing effect; the components are prefabricated and hoisted on site, making construction safe and quick, and suitable for sealing storm and sewage culverts of different specifications.

[0030] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of the invention. All equivalent changes made based on the description and drawings of the present invention are included within the scope of the present invention.

Claims

1. A sealing block at the end of a stormwater and sewage culvert, characterized in that: It includes a sealing block, the side end face of which is a right trapezoidal structure that is narrower at the top and wider at the bottom. The water-facing side of the sealing block is a vertical surface, and the water-repellent side is an inclined surface. The bottom of the sealing block is provided with two axle angles on both sides, which are adapted to the axle angle one at the bottom of the culvert. The top of the sealing block is provided with a lifting ring.

2. The stormwater and sewage culvert end sealing block according to claim 1, characterized in that: The sealing block has grooves on both sides and the bottom, and the grooves are filled with a water-swellable material.

3. The stormwater and sewage culvert end sealing block according to claim 2, characterized in that: The groove includes a groove one located above the axillary angle and a groove two located below the axillary angle and the sealing block, with the width of groove one being greater than the width of groove two.

4. The stormwater and sewage culvert end sealing block according to claim 3, characterized in that: The first groove is filled with both water-swellable material and square timber, while the second groove is filled with water-swellable material.

5. The stormwater and sewage culvert end sealing block according to claim 1, characterized in that: The top length of the sealing block is greater than or equal to 0.5mm, the width is less than the net width of the culvert by 0.05m-0.07m, and its height is at least 0.3m higher than the top of the culvert.

6. The stormwater and sewage culvert end sealing block according to claim 1, characterized in that: The slope of the sealing block is 1:0.

3.

7. A construction method for sealing and blocking blocks at the end of a stormwater and sewage culvert, characterized in that, The specific steps for the end-sealing block of the stormwater and sewage culvert as described in any one of claims 1 to 6 are as follows: S1. First, determine the size of the sealing block based on the water flow rate and the dimensions of the stormwater and sewage culvert. S2. Erecting the bottom formwork: Erect the bottom formwork according to the dimensions of the sealing blocks; S3. Reinforcing bar binding: Design relevant reinforcement according to the size of the sealing block, and bind the reinforcing bars of the sealing block on the laid bottom formwork. When binding the reinforcing bars, the inclined surface of the sealing block is on top and the vertical surface is on the bottom. S4. Pre-embedded lifting rings; S5, formwork support; S6. Pouring concrete; S7. After the sealing block is prefabricated, the water-swellable sealing material is installed in groove one and groove two and fixed with cement nails; S8. Installation of sealing blocks: After hoisting the sealing blocks to the appropriate position, insert the square timber into the first groove to seal the gap between the culvert wall and the sealing blocks. Then, set a pressure plate on the top of the square timber and fix the pressure plate to the sealing blocks. The installation is now complete.

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