Prefabricated drainage channel structure

Abstract

The utility model relates to a prefabricated drainage square ditch structure belongs to water supply and drainage technical field, including concrete base plate, prefabricated concrete bottom plate, spacing inserting rod, spacing insertion hole, prefabricated side wall, cover and close clamping groove, prefabricated cover plate, the outer side wall of prefabricated side wall is equipped with the lifting ring up and down and the outer side of prefabricated concrete bottom plate, spacing inserting rod is inserted into then passes through the lifting ring of the outer side of prefabricated concrete bottom plate and is inserted into spacing insertion hole from the lifting ring of prefabricated side wall lower part, and the top of spacing inserting rod is equipped with spacing handle that supports the top of the lifting ring of prefabricated side wall lower part. The utility model discloses entire drainage square ditch is the prefabricated concrete structure, and prefabricated side wall is positioned in the positioning concave platform, then the outer side is limited through spacing inserting rod, avoids the maintenance time of on -the -spot pouring, shortens the construction period, and guarantees the stability of drainage square ditch.

Description

Technical Field

[0001] This utility model relates to a prefabricated drainage ditch structure, belonging to the field of water supply and drainage technology. Background Technology

[0002] Currently, stormwater and sewage drainage ditches are an indispensable and important component in the construction of water supply and drainage projects. Traditionally, drainage ditch construction typically employs on-site casting, a method with numerous drawbacks. Firstly, on-site casting requires extensive formwork support and concrete curing time, resulting in long construction cycles and low efficiency. Secondly, on-site construction is significantly affected by weather and environmental factors, making it difficult to guarantee construction quality and easily generating noise and dust pollution, which contradicts the principles of energy conservation and environmental protection.

[0003] While existing precast drainage ditches have improved on-site construction to some extent, the combination of "cast-in-place concrete base slab + precast side walls / cover slabs" on concrete substrates can shorten on-site installation time. However, the cast-in-place base slab still requires on-site reinforcement binding, concrete pouring, and curing. The overall construction cycle is still constrained by the concrete curing time, and the rapid construction advantages of "precast assembly" cannot be fully realized. Utility Model Content

[0004] This utility model provides a prefabricated drainage ditch structure to solve the problems mentioned in the background art.

[0005] This utility model relates to a prefabricated drainage ditch structure, including a concrete base plate set at the bottom of the drainage trench, a prefabricated concrete bottom plate that can be spliced ​​on the concrete base plate, limiting rods on both sides of the prefabricated concrete bottom plate, limiting holes on the concrete base plate that cooperate with the limiting rods, positioning recesses on both sides of the top of the prefabricated concrete bottom plate, a limiting boss in the middle of the top of the positioning recesses, a prefabricated side wall installed in the positioning recesses, a limiting groove at the bottom of the prefabricated side wall that cooperates with the limiting boss, a cover groove on the inner side of the top of the prefabricated side wall, prefabricated cover plates in the cover grooves on both sides, lifting rings on the upper and lower sides of the outer side wall of the prefabricated side wall and on the outer side of the prefabricated concrete bottom plate, the limiting rods pass through the lifting rings at the bottom of the prefabricated side wall and then through the lifting rings on the outer side of the prefabricated concrete bottom plate and are inserted into the limiting holes, the top of the limiting rods is provided with a limiting handle supported on the top of the lifting rings at the bottom of the prefabricated side wall.

[0006] As a preferred option, the outer sidewalls of the precast sidewalls and the outer sidewalls of the precast concrete base slab are provided with matching arc grooves, which can increase the contact area between the limiting rod and the precast concrete base slab and the precast sidewalls, and better limit the movement.

[0007] As a preference, rubber pads are provided on the inner wall of the limiting groove and the bottom of the precast side wall, allowing the precast side wall to have a slight displacement in the vertical direction to compensate for slight settlement of the foundation.

[0008] As a preference, a bonding mortar layer is provided between the concrete base plate and the precast concrete bottom plate. Bonding grooves are provided on the bottom of the precast concrete bottom plate and the top of the concrete base plate to better fix the precast concrete bottom plate.

[0009] As a preference, a lifting ring is provided on the top of the precast cover plate, and a sealing mortar layer is provided between one side of the precast cover plate and the covering card slot to facilitate closing the gap of the precast cover plate.

[0010] As a preference, engaging bosses and engaging recesses that cooperate with each other are provided at the front and rear ends of each precast side wall respectively. An arc-shaped mating portion is provided on the outer end wall of the engaging boss, and an arc-shaped mating groove is provided on the outer end wall of the engaging recess. A filling gap is provided at the connection between the engaging boss and the engaging recess inside the arc-shaped mating portion. The filling gap is filled with sealing mortar. A sealing groove is provided on the side wall of the engaging recess, and a sealing strip is provided in the sealing groove. The adjacent precast side walls can be conveniently engaged, and with the cooperation of double labyrinth seals and the sealing strip, combined with the external sealing mortar, better sealing can be achieved.

[0011] As a preference, arc-shaped connecting bosses and arc-shaped connecting grooves are provided at the front and rear ends of the precast concrete bottom plate below the positioning recess respectively. Waterproof cushion layers are provided on the arc-shaped connecting grooves and the corresponding end walls of the precast concrete bottom plate. Filling grooves are provided at the top and bottom of the front and rear ends of the precast concrete bottom plate, and the upper filling groove is filled with a waterproof mortar layer. The adjacent precast concrete bottom plates can be conveniently engaged, and with the setting of the waterproof cushion layer and then combined with the external waterproof mortar layer, better sealing and waterproofing can be achieved.

[0012] The utility model has the following beneficial effects:

[0013] The entire drainage square ditch is a precast concrete structure. The precast side wall is positioned in the positioning recess, and then is limited by the limiting insertion rod on the outside, avoiding the maintenance time of in-situ casting, shortening the construction period, and ensuring the stability of the drainage square ditch. The limiting insertion rod passes through the lifting ring at the lower part of the precast side wall and then passes through the lifting ring on the outside of the precast concrete bottom plate and inserts into the limiting insertion hole, which can better connect the precast concrete bottom plate and the precast side wall into one body and make it more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the front view structural schematic diagram of the utility model;

[0015] Figure 2 is Figure 1 the enlarged structural schematic diagram at A in

[0016] Figure 3 It is a schematic top view of the connection part of the precast side wall;

[0017] Figure 4 It is a schematic top view of the position of the limiting insertion rod;

[0018] Figure 5 It is a schematic top view of the precast concrete floor slab;

[0019] Figure 6 It is a schematic side connection structure of the precast concrete floor slab;

[0020] In the figure: 1. Precast concrete floor slab; 2. Concrete base plate; 3. Lifting ring; 4. Covering card slot; 5. Hanging pull ring; 6. Precast cover plate; 7. Sealing mortar layer; 8. Precast side wall; 9. Limiting boss; 10. Limiting handle; 11. Limiting jack; 12. Limiting insertion rod; 13. Bonding groove; 14. Bonding mortar layer; 15. Rubber pad; 16. Positioning concave platform; 17. Matching arc groove; 18. Arc matching part; 19. Sealing strip; 20. Clamping boss; 21. Waterproof cushion layer; 22. Circular arc connecting boss; 23. Filling groove. Specific embodiments

[0021] The present utility model will be further described below in conjunction with embodiments.

[0022] Embodiment 1, as Figures 1 to 6 shown, the present utility model is a precast drainage square culvert structure, including a concrete base plate 2 arranged at the bottom of the drainage foundation trench, a precast concrete floor slab 1 that can be spliced is arranged on the concrete base plate 2, limiting insertion rods 12 are arranged on both sides of the precast concrete floor slab 1, limiting jacks 11 that cooperate with the limiting insertion rods 12 are arranged on the concrete base plate 2, positioning concave platforms 16 are arranged on both sides of the top of the precast concrete floor slab 1, a limiting boss 9 is arranged in the middle of the top of the positioning concave platform 16, a precast side wall 8 is installed in the positioning concave platform 16, a limiting groove that cooperates with the limiting boss 9 is arranged at the bottom of the precast side wall 8, covering card slots 4 are arranged on the inner sides of the tops of both sides of the precast side wall 8, precast cover plates 6 are arranged in the covering card slots 4 on both sides, lifting rings 3 are arranged on the outer side walls of the upper and lower parts of the precast side wall 8 and on the outer side of the precast concrete floor slab 1, the limiting insertion rod 12 passes through the lifting ring 3 at the lower part of the precast side wall 8 and then passes through the lifting ring 3 on the outer side of the precast concrete floor slab 1 and is inserted into the limiting jack 11, and a limiting handle 10 that supports the top of the lifting ring 3 at the lower part of the precast side wall 8 is arranged at the top of the limiting insertion rod 12.

[0023] During construction, a drainage trench is excavated on the road surface and the bottom of the trench is compacted. Then, a concrete base plate 2 is poured into the trench, and a precast concrete base plate 1 is laid on top of the concrete base plate 2. A precast side wall 8 is placed in the positioning recess 16, and a limiting protrusion 9 is inserted into the limiting groove. The limiting rod 12 is inserted through the lifting ring 3 at the bottom of the precast side wall 8 and then through the lifting ring 3 on the outside of the precast concrete base plate 1 into the reserved limiting insertion hole 11. The limiting handle 10 is rotated so that it faces the front and back direction to prevent interference with the construction personnel's activities. The limiting rod 12 provides limiting support for the precast side wall 8 and the precast concrete base plate 1. Finally, the precast cover plate 6 is placed in the cover groove 4 on the top of the precast side wall 8 to complete the splicing.

[0024] In Example 2, based on Example 1, the outer sidewall of the precast sidewall 8 and the outer sidewall of the precast concrete base slab 1 are provided with matching arc grooves 17. When the limiting rod 12 is inserted, the inner sidewall will be in the matching arc grooves 17, increasing the contact area.

[0025] Rubber pads 15 are provided on the inner wall of the limiting groove and at the bottom of the precast sidewall 8. The rubber pads 15 are wavy memory rubber pads, which allow the precast sidewall 8 to have a displacement of ±5mm in the vertical direction, compensating for slight settlement of the foundation.

[0026] A bonding mortar layer 14 is provided between the concrete substrate 2 and the precast concrete base slab 1. Bonding grooves 13 are provided at the bottom of the precast concrete base slab 1 and the top of the concrete substrate 2. Alternatively, the positioning holes 11 can be drilled after the precast sidewall 8 is installed. Before the concrete substrate 2 dries, a roller with evenly distributed arc-shaped protrusions on its outer wall can be used to roll on the concrete substrate 2 to create the bonding grooves 13. Before laying the precast concrete base slab 1, the bonding mortar layer 14 is first laid on the concrete substrate 2.

[0027] The top of the precast cover plate 6 is provided with a lifting ring 5, and a sealing mortar layer 7 is provided between one side of the precast cover plate 6 and the cover groove 4.

[0028] Each precast sidewall 8 has a locking boss 20 and a locking recess at its front and rear ends, respectively. The outer end wall of the locking boss 20 has an arc-shaped mating part 18, and the outer end wall of the locking recess has an arc-shaped mating groove. A filling gap is provided at the connection between the locking boss 20 and the locking recess on the inner side of the arc-shaped mating part 18. This filling gap is filled with sealing mortar. A sealing groove is provided on the side wall of the locking recess, and a sealing strip 19 is installed within the sealing groove. When connecting adjacent precast sidewalls 8, the locking boss 20 is inserted into the locking recess, and the arc-shaped mating part 18 mates with the arc-shaped mating groove. Then, waterproof sealing mortar is filled into the filling gap. The sealing mortar can also be replaced with polyurethane sealant. The sealing strip 19 can be an EPDM rubber strip.

[0029] The precast concrete base slab 1 below the positioning recess 16 has arc-shaped connecting bosses 22 and arc-shaped connecting grooves at its front and rear ends, respectively. Waterproof pads 21 are provided on the arc-shaped connecting grooves and the corresponding end walls of the precast concrete base slab 1. Filling grooves 23 are provided at the top and bottom of both the front and rear ends of the precast concrete base slab 1. The upper filling groove 23 is filled with a waterproof mortar layer. When adjacent precast concrete base slabs 1 are connected, the arc-shaped connecting bosses 22 are inserted into the arc-shaped connecting grooves, and then the upper filling groove 23 is filled with a waterproof mortar layer. The bonding mortar layer 14 enters the lower filling groove 23.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0031] In the description of this utility model, the terms "inner", "outer", "longitudinal", "transverse", "upper", "lower", "top", "bottom", 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 do not require that this utility model must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

Claims

1. A prefabricated drainage ditch structure, comprising a concrete base plate (2) disposed at the bottom of the drainage trench, characterized in that: A precast concrete base plate (1) that can be spliced ​​is provided on the concrete base plate (2). Limiting rods (12) are provided on both sides of the precast concrete base plate (1). Limiting holes (11) that cooperate with the limiting rods (12) are provided on the concrete base plate (2). Positioning recesses (16) are provided on both sides of the top of the precast concrete base plate (1). A limiting boss (9) is provided in the middle of the top of the positioning recesses (16). A precast side wall (8) is installed inside the positioning recesses (16). A limiting groove that cooperates with the limiting boss (9) is provided at the bottom of the precast side wall (8). The top inner side of the wall (8) is provided with a cover groove (4), and the cover grooves (4) on both sides are provided with precast cover plates (6). The upper and lower sides of the outer side wall of the precast side wall (8) and the outer side of the precast concrete base plate (1) are provided with lifting rings (3). The limiting rod (12) passes through the lifting ring (3) at the bottom of the precast side wall (8) and then through the lifting ring (3) on the outer side of the precast concrete base plate (1) and is inserted into the limiting hole (11). The top of the limiting rod (12) is provided with a limiting handle (10) supported on the top of the lifting ring (3) at the bottom of the precast side wall (8).

2. The prefabricated drainage ditch structure according to claim 1, characterized in that: The outer sidewalls of the precast sidewall (8) and the outer sidewalls of the precast concrete base plate (1) are provided with matching arc grooves (17).

3. The prefabricated drainage ditch structure according to claim 2, characterized in that: Rubber pads (15) are provided on the inner wall of the limiting groove and at the bottom of the prefabricated side wall (8).

4. The prefabricated drainage ditch structure according to claim 1, characterized in that: A bonding mortar layer (14) is provided between the concrete substrate (2) and the precast concrete base plate (1), and bonding grooves (13) are provided at the bottom of the precast concrete base plate (1) and the top of the concrete substrate (2).

5. A prefabricated drainage ditch structure according to claim 1, characterized in that: The top of the precast cover plate (6) is provided with a lifting ring (5), and a sealing mortar layer (7) is provided between one side of the precast cover plate (6) and the cover groove (4).

6. A prefabricated drainage ditch structure according to claim 1, characterized in that: Each precast sidewall (8) has a locking boss (20) and a locking recess at its front and rear ends respectively. The outer end wall of the locking boss (20) has an arc-shaped mating part (18), and the outer end wall of the locking recess has an arc-shaped mating groove. The connection between the locking boss (20) and the locking recess on the inner side of the arc-shaped mating part (18) has a filling gap, which is filled with sealing mortar. The side wall of the locking recess has a sealing groove, and a sealing strip (19) is provided in the sealing groove.

7. A prefabricated drainage ditch structure according to claim 1, characterized in that: The front and rear ends of the precast concrete base plate (1) below the positioning recess (16) are respectively provided with arc-shaped connecting bosses (22) and arc-shaped connecting grooves. The arc-shaped connecting grooves and the corresponding end walls of the precast concrete base plate (1) are provided with waterproof pads (21). The top and bottom of the front and rear ends of the precast concrete base plate (1) are provided with filling grooves (23). The upper filling groove (23) is filled with a waterproof mortar layer.

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