A water ditch roof support-free rapid construction structure

Abstract

The utility model discloses a ditch roof exempts from supporting quick construction structure, including cast-in-place concrete bottom plate, cast-in-place concrete side wall, the prefabricated concrete board of covering and set in cast-in-place concrete side wall and pour in cast-in-place concrete cover plate on the upper portion of prefabricated concrete board, the vertical steel bar inside cast-in-place concrete side wall turns outwards and moves to the outside and forms the installation platform in cast-in-place concrete side wall top end, vertical steel bar inside, prefabricated concrete board sets up on the installation platform, the cast-in-place concrete cover plate of this application sets up above cast-in-place concrete side wall, forms the roof construction system with exempts from supporting exempts from supporting formwork, and then can avoid the phenomenon that the traditional cast-in-place ditch roof bottom and side formwork of existing technology are prone to support formwork support difficulty, and after pouring, do not need to remove the formwork and support, and then improve the construction efficiency and quality of ditch.

Description

Technical Field

[0001] This utility model relates to the technical field of drainage ditches, and in particular to a rapid construction structure for a drainage ditch top plate that does not require support. Background Technology

[0002] In the construction of urban roads, municipal engineering projects and building sites, roadside drainage ditches are important drainage facilities. Their tops must be equipped with a roof slab structure with sufficient compressive strength to meet the load-bearing requirements under vehicle loads and environmental effects.

[0003] For example, Chinese invention patent application CN202110017975.5 discloses a construction method for cast-in-place drainage ditches, with the following steps: trench excavation; trench leveling; bottom formwork installation, the bottom formwork is divided into left and right parts, and the two parts are fixed to the bottom of the trench, with the bottom of the trench supporting the bottom surfaces of the two parts of the bottom formwork; concrete pouring, pouring concrete between the two parts of the bottom formwork, the concrete flowing downwards along the side walls of the two parts of the bottom formwork and converging in the middle of the two parts of the bottom formwork; pressing mold installation, the pressing mold squeezes the concrete at the bottom of the bottom formwork, so that the concrete fills the space between the side walls of the bottom formwork and the side walls of the pressing mold, and sets the shape; mold removal, after the main body of the drainage ditch begins to harden, the pressing mold is removed, and after curing, the bottom formwork is removed; trench backfilling, after the mold is removed, grouting or backfilling with sand and gravel is done at the bottom of the main body of the drainage ditch, and then the trench is backfilled and compacted. This application improves the construction efficiency of urban cast-in-place drainage ditches and simplifies the construction steps.

[0004] However, the top slab of the road drainage ditch needs to have sufficient compressive strength. Generally, a cast-in-place top slab is used to cover the drainage ditch. Usually, formwork is erected at the bottom and sides of the drainage ditch to cast the top slab. However, due to the small space for formwork within the drainage ditch, it is difficult to support the formwork, resulting in low construction efficiency, difficulty in dismantling the formwork and scaffolding, and the formwork may also be deformed and damaged during the process, making it unusable. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides a quick-construction structure for a drainage ditch top slab that requires no support.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] This utility model discloses a quick-construction structure for a drainage ditch top slab without support, comprising a cast-in-place concrete base slab, a cast-in-place concrete sidewall, a precast concrete slab covering the top of the drainage ditch on the cast-in-place concrete sidewall, and a cast-in-place concrete cover slab cast on the top of the precast concrete slab. The vertical reinforcing bars on the inner side of the cast-in-place concrete sidewall are turned outward and moved outward to form an installation platform at the top of the cast-in-place concrete sidewall and inside the vertical reinforcing bars. The precast concrete slab is erected on the installation platform.

[0008] This utility model provides a quick construction structure for a drainage ditch top slab without support, wherein the vertical reinforcing bars are moved outward by 50mm.

[0009] This utility model provides a quick construction structure for a drainage ditch top slab without support. Furthermore, the top slab reinforcement bars in the short side direction of the precast concrete slab extend outward to both sides by a certain length and are anchored into the cast-in-place concrete cover slab.

[0010] This utility model provides a quick construction structure for a drainage ditch top slab without support. Furthermore, the vertical reinforcing bars of the cast-in-place concrete sidewall extend outward to the upper end of the cast-in-place concrete sidewall and are anchored into the cast-in-place concrete cover slab.

[0011] This utility model provides a quick construction structure for a drainage ditch top slab without support. Furthermore, the short-side reinforcing bars of the cast-in-place concrete cover slab are bent downwards at both ends.

[0012] This utility model discloses a rapid construction structure for a drainage ditch top slab without support. Furthermore, a hook is installed on the precast concrete slab, with the lower part of the hook anchored into the precast concrete slab and the upper part anchored into the cast-in-place concrete cover slab.

[0013] This utility model provides a quick construction structure for a drainage ditch top slab without support. Furthermore, the width of the precast concrete slab is 10cm longer than the inner diameter of the drainage ditch.

[0014] This utility model provides a quick construction structure for a drainage ditch top slab without support. Furthermore, the short-side steel bar is bent to the upper end of the cast-in-place concrete sidewall.

[0015] This utility model provides a quick construction structure for a drainage ditch top slab without support. Furthermore, the short-side reinforcing bars are connected to the vertical reinforcing bars on the outer side of the cast-in-place concrete sidewall.

[0016] Compared with the prior art, this utility model has the following advantages:

[0017] 1. By placing precast concrete slabs on top of cast-in-place concrete sidewalls, a top slab construction system with no need for support or bottom formwork is formed. This avoids the difficulties in setting up formwork support at the bottom and sides of the top slab in traditional cast-in-place ditch construction. Furthermore, after pouring, there is no need to remove the bottom formwork and support, thereby improving the construction efficiency and quality of the ditch.

[0018] 2. By turning the vertical reinforcing bars of the cast-in-place concrete sidewall outward and moving the inner vertical reinforcing bars outward by 50mm, an installation platform can be provided to cooperate with the installation of the precast concrete slab. On the other hand, it can support the erection of the precast concrete slab, thereby improving construction efficiency and preventing uneven erection of the precast concrete slab on site, which could lead to grout leakage in subsequent construction.

[0019] The present invention will be further described below with reference to the accompanying drawings. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a cross-sectional view of the drainage ditch structure of this utility model;

[0022] Figure 3 This is a cross-sectional view of the cast-in-place concrete base slab and cast-in-place concrete sidewalls of this utility model;

[0023] Figure 4 This is a cross-sectional view of the precast concrete slab of this utility model;

[0024] Figure 5 This is a cross-sectional view of the cast-in-place concrete cover plate of this utility model.

[0025] Figure label:

[0026] 1. Cast-in-place concrete base slab; 2. Cast-in-place concrete sidewalls; 3. Precast concrete slab; 4. Cast-in-place concrete cover slab; 5. Vertical reinforcement; 6. Installation platform; 7. Lifting hook; 8. Short side reinforcement; 9. Top slab reinforcement. Detailed Implementation

[0027] like Figures 1-5 As shown, this utility model discloses a rapid construction structure for a drainage ditch top slab without support, including a cast-in-place concrete base slab 1, cast-in-place concrete sidewalls 2, precast concrete slabs 3, and a cast-in-place concrete cover slab 4. The cast-in-place concrete base slab 1 and the cast-in-place concrete sidewalls 2 form a drainage ditch structure. The precast concrete slab 3 is placed on the cast-in-place concrete sidewalls 2 to seal the upper opening of the drainage ditch as a casting template. The cast-in-place concrete cover slab 4 is cast on the precast concrete slab 3. By adopting the above method, the precast concrete slab 3 is erected above the cast-in-place concrete sidewalls 2, forming a top slab construction system that requires no support and no bottom formwork. This avoids the problem of difficulty in setting up formwork support at the bottom and sides of the traditional cast-in-place drainage ditch top slab in the prior art. At the same time, after the casting is completed, there is no need to remove the bottom formwork and support, thereby improving the construction efficiency and quality of the drainage ditch.

[0028] Specifically, the cast-in-place concrete sidewall 2 has double rows of vertical reinforcing bars 5. The upper ends of the double rows of vertical reinforcing bars 5 are turned outward to the upper end of the cast-in-place concrete sidewall 2. The vertical reinforcing bars 5 located on the inner side of the cast-in-place concrete sidewall 2 are moved outward by 50mm, forming an installation platform 6 at the upper end of the cast-in-place concrete sidewall 2 and inside the vertical reinforcing bars 5. The precast concrete slab 3 is precast with a width 10cm longer than the inner diameter of the drainage ditch and a length 1m longer. The precast concrete slab 3 is erected on the installation platform 6 with a width of 5cm on each side. By turning the vertical reinforcing bars 5 of the cast-in-place concrete sidewall 2 outward and moving the inner vertical reinforcing bars 5 outward by 50mm, on the one hand, the installation platform 6 is provided to cooperate with the precast concrete slab 3 for installation, and on the other hand, the erection of the precast concrete slab 3 is supported, thereby improving construction efficiency and preventing the phenomenon of grout leakage in subsequent construction due to uneven erection of the precast concrete slab 3 on site.

[0029] The precast concrete slab 3 is equipped with hooks 7 at both ends along its long side. The lower part of the hooks 7 is anchored into the precast concrete slab 3, and the upper part is subsequently anchored into the cast-in-place concrete cover 4. This facilitates subsequent transportation and increases the connection strength between the precast concrete slab 3 and the cast-in-place concrete cover 4, ensuring the connection performance.

[0030] The double-row vertical reinforcing bars 5 are turned up and anchored into the cast-in-place concrete cover plate 4, so that the cast-in-place concrete cover plate 4 is connected to the cast-in-place concrete side wall 2 as one unit; the two ends of the short side reinforcing bars 8 of the cast-in-place concrete cover plate 4 are bent downward and bent to the upper end of the cast-in-place concrete side wall 2, and connected to the vertical reinforcing bars 5 on the outside of the cast-in-place concrete side wall 2, so as to facilitate the installation and positioning of the short side reinforcing bars 8.

[0031] In addition, the top plate reinforcement 9 of the precast concrete slab 3 extends outward to both sides by a certain length and is anchored into the cast-in-place concrete cover plate 4. The outward extension length must meet the anchorage requirements of the building structure reinforcement.

[0032] The installation method is as follows:

[0033] Cast-in-place concrete base slab 1 and cast-in-place concrete sidewall 2 are poured, and the vertical reinforcing bars 5 of the cast-in-place concrete sidewall 2 are reserved upwards; a precast concrete slab 3 with a length of 1.0m is precast on site, and the top slab reinforcing bars 9 in the width direction extend outwards to both sides; the precast concrete slab 3 is erected on the cast-in-place concrete sidewall 2, and the reinforcing bars in the width direction of the cast-in-place concrete cover slab 4 are bent downwards, and concrete is poured on top of the precast concrete slab 3 to form the cast-in-place concrete cover slab 4.

[0034] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A rapid construction structure for a drainage ditch top slab that requires no support, characterized in that, It includes a cast-in-place concrete base slab (1), a cast-in-place concrete sidewall (2), a precast concrete slab (3) covering the cast-in-place concrete sidewall (2) to seal the top of the drainage ditch, and a cast-in-place concrete cover slab (4) poured on the top of the precast concrete slab (3). The vertical steel bars (5) on the inner side of the cast-in-place concrete sidewall (2) are turned outward and moved to the outside to form an installation platform (6) at the top of the cast-in-place concrete sidewall (2) and inside the vertical steel bars (5). The precast concrete slab (3) is erected on the installation platform (6).

2. The rapid construction structure for a drainage ditch top slab without support according to claim 1, characterized in that, The vertical reinforcing bar (5) is moved outward by 50 mm.

3. The rapid construction structure for a drainage ditch top slab without support according to claim 1, characterized in that, The top plate reinforcement (9) of the precast concrete slab (3) extends outward to both sides by a certain length and is anchored into the cast-in-place concrete cover plate (4).

4. The rapid construction structure for a drainage ditch top slab without support according to claim 1, characterized in that, The vertical reinforcing bars (5) of the cast-in-place concrete sidewall (2) extend outward to the upper end of the cast-in-place concrete sidewall (2) and are anchored into the cast-in-place concrete cover plate (4).

5. The rapid construction structure for a drainage ditch top slab without support according to claim 1, characterized in that, The short side steel bars (8) of the cast-in-place concrete cover plate (4) are bent downward at both ends.

6. The rapid construction structure for a drainage ditch top slab without support according to claim 1, characterized in that, A hook (7) is installed on the precast concrete slab (3). The lower part of the hook (7) is anchored into the precast concrete slab (3), and the upper part is anchored into the cast-in-place concrete cover plate (4).

7. The rapid construction structure for a drainage ditch top slab without support according to claim 2, characterized in that, The width of the precast concrete slab (3) is 10 cm longer than the inner diameter of the drainage ditch.

8. The rapid construction structure for a drainage ditch top slab without support according to claim 5, characterized in that, The short side steel bar (8) is bent to the upper end of the cast-in-place concrete sidewall (2).

9. The rapid construction structure for a drainage ditch top slab without support according to claim 8, characterized in that, The short side steel bar (8) is connected to the vertical steel bar (5) on the outside of the cast-in-place concrete sidewall (2).

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