Prefabricated municipal well structure

Abstract

The utility model discloses a prefabricated assembly type municipal well structure which comprises a well body structure and a municipal pipeline, the municipal pipeline is connected to the well body structure, the well body structure comprises a well bottom, a well wall and a well lid, the well bottom comprises a cushion layer and a prefabricated well bottom, the prefabricated well bottom is arranged on the cushion layer, the well wall is arranged on the prefabricated well bottom, and the well lid is arranged on the well bottom. The well lid is arranged at the top of the well wall, and the municipal pipeline transversely penetrates through the prefabricated well bottom and is connected with the prefabricated well bottom. The pipe hole is reserved in the prefabricated well bottom, the municipal pipeline and the prefabricated well bottom are connected through flexible connection, rapid connection of the municipal pipeline and the prefabricated well bottom is achieved, the construction efficiency and the connection quality are effectively improved, and the hidden danger of leakage during pipeline butt joint is further avoided.

Description

Technical Field

[0001] This utility model relates to the field of municipal well construction technology, specifically to a prefabricated assembled municipal well structure. Background Technology

[0002] How to construct municipal manholes in batches has always been a crucial issue for improving the efficiency of municipal engineering construction, especially when drawings are insufficient, schedules are tight, and there is no opportunity for trial and error. A rapid construction structure and method are needed to meet these requirements. Existing municipal manhole construction often employs prefabricated manhole bodies, achieving construction by hoisting prefabricated components section by section. The connection between the manhole body and municipal pipelines is achieved by pre-embedding sleeves during pouring. However, in practical applications, this method suffers from drawbacks such as inconvenient connection operations, time-consuming and labor-intensive processes, and a tendency to leak, resulting in poor performance. This utility model provides a prefabricated assembled municipal manhole structure to solve the above problems. Utility Model Content

[0003] This utility model provides a prefabricated assembled municipal well structure, in which a flexible connection is used between the municipal pipeline and the well structure, thereby improving the construction efficiency and connection quality of the municipal pipeline.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is:

[0005] A prefabricated municipal manhole structure includes a manhole body structure and a municipal pipeline. The municipal pipeline is connected to the manhole body structure. The manhole body structure includes a manhole bottom, a manhole wall, and a manhole cover. The manhole bottom includes a bedding layer and a prefabricated manhole bottom. The prefabricated manhole bottom is placed on the bedding layer, the manhole wall is placed on the prefabricated manhole bottom, and the manhole cover is placed on top of the manhole wall. The municipal pipeline crosses the prefabricated manhole bottom and is connected to the prefabricated manhole bottom.

[0006] Furthermore, a connection gap is provided between the municipal pipeline and the precast well bottom, and a flexible connection is provided in the connection gap. The flexible connection includes a water-stopping component, a waterproof structure, and a filling structure. The water-stopping components are arranged in pairs in the connection gap. The waterproof structure and the filling structure are located between the water-stopping components. The filling structure is located on the outside of the waterproof structure. The waterproof structure is located on the outer wall of the municipal pipeline.

[0007] Furthermore, the well wall includes well wall fittings, which are continuously arranged vertically. The well wall fittings are provided with joints, the top of the well wall is provided with a convex joint, and the bottom is provided with a concave joint. The convex joint and the concave joint cooperate with each other, and the top of the precast well bottom is provided with a convex joint.

[0008] Furthermore, the manhole cover includes a hinged manhole cover and a manhole cover plate, the manhole cover plate being disposed on the top of the manhole wall, and the hinged manhole cover being disposed within the manhole cover plate.

[0009] Furthermore, a filler is provided between the convex joint and the concave joint.

[0010] Furthermore, ladders are provided at the bottom and on the walls of the well.

[0011] Preferably, the water-stopping component is asphalt-impregnated hemp fiber, and the waterproof structure is a water-stopping strip.

[0012] Preferably, both the filling structure and the filler are concrete.

[0013] The beneficial effects of this utility model are as follows:

[0014] By pre-reserving pipe holes in the bottom of the precast well and using flexible connections to connect the municipal pipeline to the bottom of the precast well, a quick connection between the municipal pipeline and the bottom of the precast well is achieved, which effectively improves construction efficiency and connection quality, and also avoids the risk of leakage when the pipeline is connected. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the connection structure between the municipal pipeline and the precast well bottom of this utility model;

[0017] Figure 3 This is a schematic diagram of the flexible connection structure of this utility model;

[0018] Figure 4 This is a schematic diagram showing the connection state between the well wall and the prefabricated well bottom of this utility model.

[0019] Attached reference numerals: 1. Municipal pipeline; 2. Bottom of manhole; 21. Subbase; 22. Precast manhole bottom; 23. Flexible connection; 231. Waterstop; 232. Waterproof structure; 233. Filling structure; 3. Manhole wall; 4. Manhole cover; 41. Opening and closing manhole cover; 42. Manhole cover plate. Detailed Implementation

[0020] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] like Figure 1 As shown, a prefabricated assembled municipal manhole structure includes a manhole body structure and a municipal pipeline 1. The municipal pipeline 1 is connected to the manhole body structure. The manhole body structure includes a manhole bottom 2, a manhole wall 3, and a manhole cover 4, all of which are prefabricated components. After prefabrication, they are transported to the construction site. The manhole bottom 2 includes a pad layer 21 and a prefabricated manhole bottom 22. The prefabricated manhole bottom 22 is set on the pad layer 21, the manhole wall 3 is set on the prefabricated manhole bottom 22, and the manhole cover 4 is set on the top of the manhole wall 3. The municipal pipeline 1 crosses the prefabricated manhole bottom 22 and is connected to the prefabricated manhole bottom 22.

[0023] like Figure 2 , 3 As shown, furthermore, a butt joint gap is provided between the municipal pipeline 1 and the precast well bottom 22, and a flexible connection 23 is provided in the butt joint gap. The flexible connection 23 includes a water-stopping component 231, a waterproof structure 232, and a filling structure 233. The water-stopping components 231 are arranged in pairs in the butt joint gap. The waterproof structure 232 and the filling structure 233 are located between the water-stopping components 231. The filling structure 233 is located on the outside of the waterproof structure 232, and the waterproof structure 232 is located on the outer wall of the municipal pipeline 1. Both the water-stopping component 231 and the waterproof structure 232 are flexible components. After installation, they can form a continuous flexible structure, which provides buffering and connection redundancy between the municipal pipeline 1 and the precast well bottom 22. At the same time, the pipe hole size on the precast well bottom 22 is larger than the outer diameter of the municipal pipeline 1, which facilitates the installation of the municipal pipeline 1.

[0024] like Figure 1 As shown, the manhole cover 4 further includes an opening and closing manhole cover 41 and a manhole cover plate 42. The manhole cover plate 42 is located on the top of the manhole wall 3, and the opening and closing manhole cover 41 is located in the manhole cover plate 42.

[0025] Furthermore, a filler is provided between the convex joint and the concave joint.

[0026] like Figure 1 As shown, further, ladders are provided on the bottom 2 and the wall 3 of the well. The ladders are formed by pre-embedding D12 steel bars, with a step width of 150mm and a step length of 400mm.

[0027] Preferably, the water-stopping component 231 is made of asphalt-impregnated hemp fiber, the waterproof structure 232 is a water-stopping strip, the manhole cover plate 42 is a concrete manhole cover, and the opening and closing manhole cover 41 is a cast iron manhole cover.

[0028] Preferably, both the filling structure 233 and the filler are concrete.

[0029] The specific construction method of this utility model is as follows: 1. Make a statistical table of well chamber parameters based on the detailed node diagram and general plan of the municipal well chamber.

[0030] Second, a well chamber parameter statistics table is required for the prefabrication of prefabricated components;

[0031] The hoisting weight of the well structure reaches 9.979t, therefore it needs to be prefabricated in sections. The prefabricated well bottom 22 and well wall 3 sections are adopted.

[0032] The precast well bottom 22 is a square concrete component with an open top. When precasting the well bottom 22, one side of the well wall is poured first, and a 300mm upside down is formed to create a water-stop curb. Rubber waterstops are fixed on the water-stop curbs at the joints between the bottom well wall, the side well wall, and the well bottom. The rubber waterstops protrude 150mm and are embedded 150mm. The rubber waterstops are bonded firmly with hot melt. Then, the joint is roughened. After the bottom well wall has set, the other three side well walls and the well bottom are poured in one go to form the precast well bottom 22.

[0033] like Figure 4 As shown, the well wall 3 is also composed of segmented well wall pipes, which are continuously arranged vertically. The well wall pipes are provided with joints, the top of the well wall is provided with a convex joint, and the bottom is provided with a concave joint. The convex joint and the concave joint cooperate with each other. The top of the prefabricated well bottom 22 is provided with a convex joint.

[0034] In addition, when prefabricating the prefabricated well bottom 22 and well wall pipe fittings, lifting rings are reserved on them for hoisting.

[0035] III. Hoisting and installation work;

[0036] When the precast concrete reaches 70% strength, hoisting operations are carried out. Before the installation of the manhole, earthwork excavation is carried out. When the excavation is close to the design elevation, manual excavation is used to avoid disturbing the original soil. Then, the site is leveled, a plastic film is laid, and a 100mm thick C20 concrete is poured to form a cushion layer 21. The cushion layer 21 extends 100mm outward from the manhole. When water is encountered during excavation, a sump pit is excavated for dewatering. Over-excavation is carried out by 200mm, and rubble concrete is poured to replace the cushion layer. After the manhole is installed, the lifting ring is removed, and the gaps at the joints are filled with grout. Then, a 300mm wide and 1.5mm thick layer of waterproof mortar is applied to the joints inside and outside the manhole. Another 300mm wide and 1.5mm thick penetrating crystallizing mortar is applied to the joints on the inside of the manhole.

[0037] IV. Installation of municipal pipelines;

[0038] The municipal pipeline 1 is sealed, and then a layer of rubber waterstop is wrapped around the outer wall of the municipal pipeline 1 to form a waterproof structure 232. The wrapping is tight. Then, asphalt hemp fiber is filled into the gap between the municipal pipeline 1 and the bottom of the precast well 22. Finally, the template is installed and grouting is performed to a depth of 30mm. When the strength of the grout reaches 70%, the template is removed.

[0039] Fifth, after completing all construction work, backfill the earthwork;

[0040] Backfill in 300mm layers, compacting each layer as it goes. Before pipe installation, backfill to the bottom of the pipe. Use coarse sand for backfilling around and above the pipe within 300mm, without compaction.

[0041] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A prefabricated assembled municipal well structure, characterized in that: The system includes a manhole structure and a municipal pipeline (1). The municipal pipeline (1) is connected to the manhole structure. The manhole structure includes a manhole bottom (2), a manhole wall (3), and a manhole cover (4). The manhole bottom (2) includes a cushion layer (21) and a prefabricated manhole bottom (22). The prefabricated manhole bottom (22) is placed on the cushion layer (21). The manhole wall (3) is placed on the prefabricated manhole bottom (22). The manhole cover (4) is placed on top of the manhole wall (3). The municipal pipeline (1) crosses the prefabricated manhole bottom (22) and is connected to the prefabricated manhole bottom (22).

2. The prefabricated assembled municipal well structure according to claim 1, characterized in that: A connection gap is provided between the municipal pipeline (1) and the precast well bottom (22), and a flexible connection (23) is provided in the connection gap. The flexible connection (23) includes a water-stopping element (231), a waterproof structure (232) and a filling structure (233). The water-stopping elements (231) are arranged in pairs in the connection gap. The waterproof structure (232) and the filling structure (233) are located between the water-stopping elements (231). The filling structure (233) is located on the outside of the waterproof structure (232). The waterproof structure (232) is located on the outer wall of the municipal pipeline (1).

3. The prefabricated assembled municipal well structure according to claim 2, characterized in that: The well wall (3) includes well wall fittings, which are continuously arranged vertically. The well wall fittings are provided with joints. The top of the well wall is provided with a convex joint and the bottom is provided with a concave joint. The convex joint and the concave joint cooperate with each other. The top of the prefabricated well bottom (22) is provided with a convex joint.

4. The prefabricated assembled municipal well structure according to claim 1, characterized in that: The manhole cover (4) includes a hinged manhole cover (41) and a manhole cover plate (42). The manhole cover plate (42) is located on the top of the manhole wall (3), and the hinged manhole cover (41) is located in the manhole cover plate (42).

5. A prefabricated assembled municipal well structure according to claim 3, characterized in that: A filler is provided between the convex joint and the concave joint.

6. A prefabricated assembled municipal well structure according to claim 1, characterized in that: Ladders are provided at the bottom (2) and the wall (3) of the well.

7. A prefabricated assembled municipal well structure according to claim 2, characterized in that: The waterstop (231) is made of asphalt hemp fiber, and the waterproof structure (232) is a waterstop strip.

8. A prefabricated assembled municipal well structure according to claim 5, characterized in that: Both the filling structure (233) and the filling material are concrete.

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