A cast-in-place concrete closed pool structure and its construction method

Abstract

The present invention provides a cast-in-place concrete closed pool structure and its construction method. The closed pool structure includes a pool body and a cover body. A top plate is provided at the top of the pool body, and a reserved hole is provided on the top plate. The reserved hole is frustum-shaped. The cover body is a frustum structure, and the cover body includes a precast part located below and a cast-in-place part located above. The cover body closes the reserved hole. The beneficial effects of the present invention are as follows: The reserved hole on the top cover of the closed pool structure can enable the materials and garbage left in the pool body during the pouring process of the closed pool body to be transported out, preventing building materials and garbage from affecting the subsequent normal use of the closed pool. At the same time, the reserved hole is closed by the cover body, and the cover body is cast integrally with the top plate to ensure the sealing and integrity of the closed pool. This construction method can prevent new building materials and construction waste from being generated during the construction of the cover body, and at the same time connect the steel bar mesh in the cover body and the top plate into a whole, further ensuring the integrity and structural strength of the pool body.

Description

Technical Field

[0001] The present invention relates to the field of building construction, and particularly to a cast-in-place concrete closed pool structure and a construction method thereof. Background Art

[0002] In conventional waste treatment buildings, structures with relatively high requirements for airtightness, such as contact oxidation ponds and hydrolysis acidification ponds, are often provided. According to functional requirements, such structures often adopt relatively closed structures. Except for reserved holes for necessary pipelines to pass through, no other holes are allowed to be set. The required hole size for pipelines is small (generally ≤ 300 mm). When cast-in-place concrete is used, materials such as templates and supports for construction located inside the pool cannot be transported out, thus affecting the structure construction and the subsequent use of the pool. Summary of the Invention

[0003] In view of this, the present invention provides a cast-in-place concrete closed pool structure, including a pool body and a cover body;

[0004] A top plate is provided at the top of the pool body, and the top plate is integrally connected with the pool body; a reserved hole is provided on the top plate, and the reserved hole is in the shape of a frustum of a pyramid;

[0005] The cover body is in the structure of a frustum of a pyramid, and the cover body includes a precast part located below and a cast-in-place part located above; the cover body covers in the reserved hole to seal the reserved hole;

[0006] The thickness of the precast part is less than the thickness of the top plate. The precast part is located at the lower part of the reserved hole, and the cast-in-place part is located at the upper part of the reserved hole where the precast part is located. The cast-in-place part is cast into an integral structure with the top plate.

[0007] Further, both the reserved hole and the cover body are in the shape of a frustum of a quadrangular pyramid.

[0008] Further, steel bars are provided in both the top plate and the cover body, and the steel bars in the cover body are connected to the steel bars in the top plate.

[0009] Further, a double-layer steel bar mesh is provided in the top plate.

[0010] Further, the double-layer steel bar mesh is respectively an upper steel bar mesh and a lower steel bar mesh. A plurality of reserved holes are provided on the side wall of the reserved hole. Both the upper steel bar mesh and the lower steel bar mesh extend into the reserved holes. A plurality of steel bar hoisting rings are provided on the precast part, and the hoisting rings are connected to the steel bars in the precast part. The lower steel bar mesh and the upper steel bar mesh are respectively connected to the hoisting rings through a plurality of connecting steel bars.

[0011] Further, the steel bars in the cast-in-place part are connected to the upper steel bar mesh.

[0012] The present invention also provides a construction method for a cast-in-place concrete closed pool structure, which is used for constructing the above-mentioned cast-in-place concrete closed pool structure. The method comprises the following steps:

[0013] S1: Pour the closed pool body and set a reserved hole on the top plate of the pool body;

[0014] S2: Demolish the formwork and supports used for pouring the pool body in step S1, clean the inside of the pool body, and transport the materials and garbage inside the pool body out through the reserved hole;

[0015] S3: Fabricate the precast part of the cover body, place the precast part into the reserved hole; pour the cast-in-place part of the cover body to integrally cast the cover body and the top plate.

[0016] A construction method for a cast-in-place concrete closed pool structure, characterized in that:

[0017] The method for setting the reserved hole on the top plate of the pool body in step S1 is: install a sub-mold with a frustum structure at a predetermined position on the formwork for pouring the top plate;

[0018] The method for fabricating the precast part of the cover body in step S3 is: lay a steel mesh at the bottom of the female mold with a frustum structure and connect lifting rings on the steel mesh;

[0019] Wherein the sub-mold and the female mold have the same shape, and the outer wall of the sub-mold can be closely attached to the inner wall of the female mold.

[0020] Further, in step S1, during the process of pouring the top plate, connect reinforcing steel bars at the part close to the steel mesh. The reinforcing steel bars extend to the edge of the reserved hole, and wrap the end of the reinforcing steel bars with colloid; and after the reserved hole is formed, remove the colloid to form a plurality of connecting holes on the edge of the reserved hole to expose the reinforcing steel bars.

[0021] Further, in step S3, before pouring the cast-in-place part of the cover body, connect the reinforcing steel bars in the top plate and the lifting rings on the precast part through connecting steel bars, and connect the reinforcing steel bars in different connecting holes through connecting steel bars, so that the connecting steel bars form a steel mesh in the cast-in-place part.

[0022] The beneficial effects of a cast-in-place concrete closed pool structure and its construction method of the present invention are as follows: A reserved hole is provided on the top plate of the closed pool structure. The reserved hole can enable the materials and garbage left in the pool body during the pouring process of the closed pool body to be transported out, preventing the building materials and garbage from affecting the subsequent normal use of the closed pool; at the same time, the reserved hole is closed by the cover body, and the cover body is integrally cast with the top plate, ensuring the sealing and integrity of the closed pool. This construction method can avoid generating new building materials and construction waste in the pool body during the construction process, ensuring the cleanliness of the pool body. At the same time, the construction method can connect the cover body and the steel mesh in the top plate into a whole, further ensuring the integrity and structural strength of the pool body. Description of the Drawings

[0023] Figure 1 is a schematic structural view of the pool body of a cast-in-place concrete closed pool structure according to an embodiment of the present invention.

[0024] Figure 2 is Figure 1 a top view of the reserved hole 2 in

[0025] Figure 3 is a schematic installation structure view of the precast part 31 of the cover body 3 in the embodiment.

[0026] Figure 4 is a schematic installation structure view of the cast-in-place part 32 of the cover body 3 in the embodiment.

[0027] Figure 5 is a schematic structural view of the construction of the sub-mold 4 and the master mold 5 during the construction process of a cast-in-place concrete closed pool structure.

[0028] In the above figures: 1 - pool body, 11 - top plate, 2 - reserved hole, 21 - connecting hole, 3 - cover body, 31 - precast part, 32 - cast-in-place part, 33 - lifting ring, 34 - connecting steel bar, 4 - sub-mold, 5 - master mold. Detailed Embodiment

[0029] To make the objectives, technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0030] Please refer to Figures 1 to 4 , a cast-in-place concrete closed pool structure, including a pool body 1 and a cover body 3.

[0031] In this embodiment, the pool body 1 is a hollow rectangular pool, which is made of concrete. A top plate 11 is provided at the top of the pool body 1, and the top plate 11 is integrally connected with the pool body 1; a reserved hole 2 is provided on the top plate 11, and the reserved hole 2 is frustum-shaped; in this embodiment, the reserved hole 2 is in the shape of an inverted quadrangular frustum, the side surface of the quadrangular frustum is inclined at 45°, and the size of the reserved hole is 300×500 mm.

[0032] The shape and size of the cover body 3 are the same as those of the reserved hole 2, and it is also in the shape of an inverted quadrangular frustum. The cover body 3 is fixed in the reserved hole 2, and the cover body 3 is integrally cast with the pool body 1 to close the reserved hole 2; specifically, the cover body 3 includes a precast part 31 located below and a cast-in-place part 32 located above.

[0033] The precast part 31 is also in the shape of an inverted frustum of a square pyramid, and its thickness is less than that of the top plate 11. A steel bar mesh is provided inside the precast part 31, and a lifting ring 33 connected to the steel bar mesh inside it as a whole is provided above it. The lifting ring 33 is made of steel bars, and the lifting ring 33 facilitates the hoisting of the precast part 31. The precast part 31 is installed below the reserved hole 2, and the cast-in-place part 32 is located above the precast part 31 and above the reserved hole 2. The cast-in-place part 32 and the top plate 11 are cast into an integral structure.

[0034] Further, a double-layer steel bar mesh is provided inside the top plate 11. The double-layer steel bar mesh is respectively an upper-layer steel bar mesh and a lower-layer steel bar mesh. A connecting hole 21 is provided at the edge of the reserved hole 2. The double-layer steel bar mesh inside the top plate 11 extends into the connecting hole 21 through reinforcing steel bars. The reinforcing steel bars in the connecting hole 21 are connected to the lifting ring 33 of the precast part 31 by welding through connecting steel bars 34. At the same time, the reinforcing steel bars on the upper-layer steel bar mesh are also connected by welding through connecting steel bars 34. All the connecting steel bars 34 are located inside the reserved hole and above the precast part 31. The connecting steel bars 34 form the steel bar mesh inside the cast-in-place part 32. In this way, the cover body 3 and the top plate 11 can be connected as a whole, and the connection strength is high.

[0035] Please refer to Figures 1 to 5 , the above concrete cast-in-place closed pool structure is constructed by the following construction method, and this method includes the following steps:

[0036] S1: Pour the closed pool body 1 and set a reserved hole 2 on the top plate of the pool body 1;

[0037] Among them, the process of setting the reserved hole in step S1 is specifically as follows: During the process of pouring the top plate 11, install a sub-mold 4 in the shape of an inverted frustum of a square pyramid at a predetermined position of the formwork for pouring the top plate 11, and set reinforcing steel bars (the size of the reinforcing steel bars is Φ12mm) on the upper and lower layer steel bar meshes inside the top plate 11, so that the upper and lower layer steel bar meshes of the top plate extend from the surrounding to the side of the sub-mold 4; wrap the ends of all the reinforcing steel bars with colloid; pour the top plate 11 of the pool body; the reserved hole 2 with the same shape and size as the sub-mold 4 is formed on the top plate 11.

[0038] S2: After the pool body 1 solidifies, remove the formwork and supports used for pouring the pool body 1 in step S1, clean the inside of the pool body 1, and transport the materials and garbage inside the pool body out from the reserved hole 2;

[0039] S3: Manufacture the precast part 31 of the cover body 3 and place the precast part 31 into the reserved hole 2; pour the cast-in-place part 32 of the cover body 3 so that the cover body 3 and the top plate 11 are cast into an integral whole.

[0040] The process of step S3 is specifically as follows:

[0041] Manufacture the master mold 5 (the master mold 5 and the sub-mold 4 form a master-slave mold assembly); the master mold 5 and the sub-mold 4 have the same shape, and the size of the master mold 5 is slightly larger than that of the sub-mold 4, so that the outer wall of the sub-mold 4 can be closely attached to the inner wall of the master mold 5. Both the master mold 5 and the sub-mold 4 are made of the target wooden board;

[0042] Manufacture the prefabricated part 31 of the cover body 3 in the master mold 5, where the thickness of the prefabricated part 31 is within 1 / 3 of the thickness of the top plate, so that the height of the prefabricated part 31 does not exceed the height of the reinforcing steel bars; a steel mesh is provided in the prefabricated part 31, and the steel mesh is connected to the lifting ring 33;

[0043] Remove the colloid at the ends of all the reinforcing steel bars, so that a plurality of connection holes 21 for exposing the reinforcing steel bars are formed on the side wall of the reserved hole 2, and the connection holes 21 facilitate the welding of the reinforcing steel bars;

[0044] Install the manufactured prefabricated part 31 into the reserved hole 2 by means of lifting through the lifting ring 33;

[0045] Weld the ends of all the reinforcing steel bars to the lifting ring 33 of the prefabricated part 31 through the connecting steel bars 34, and connect the reinforcing steel bars in different reserved holes through the connecting steel bars 34, so that the connecting steel bars 34 form the steel mesh in the cast-in-place part 32;

[0046] Pour concrete into the reserved hole 2 to pour the cast-in-place part 32. After the cast-in-place part 32 is poured, the cast-in-place part 32 and the prefabricated part 31 form a complete cover body 3. The cover body 3 and the top plate 11 form an integral structure, achieving a sealing effect. At the same time, the steel mesh of the cover body 3 and the steel mesh in the top plate 11 are connected into an integral whole, and its structural strength is high.

[0047] In this article, the front, back, up, down and other orientation words are defined based on the positions of the components in the drawings and the positions of the components relative to each other, only for the sake of clarity and convenience in expressing the technical solution. It should be understood that the use of the orientation words should not limit the scope of protection claimed in this application.

[0048] Without conflict, the above-mentioned embodiments and the features in the embodiments in this article can be combined with each other.

[0049] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A cast-in-place concrete closed pool structure, characterized in that: it includes a pool body and a cover body; a top plate is provided at the top of the pool body, and the top plate is integrally connected to the pool body; a reserved hole is provided on the top plate, and the reserved hole is frustum-shaped; the cover body is a frustum structure, and the cover body includes a precast part at the lower part and a cast-in-place part at the upper part; the cover body covers in the reserved hole to close the reserved hole; the thickness of the precast part is less than the thickness of the top plate, the precast part is located at the lower part of the reserved hole, the cast-in-place part is located at the upper part of the reserved hole where the precast part is located, and the cast-in-place part is cast into an integral structure with the top plate; both the reserved hole and the cover body are in the shape of a quadrangular frustum; steel bars are provided in both the top plate and the cover body, and the steel bars in the cover body are connected to the steel bars in the top plate.

2. A cast-in-place concrete closed pool structure according to claim 1, characterized in that: a double-layer steel bar mesh is provided in the top plate.

3. A cast-in-place concrete closed pool structure according to claim 2, characterized in that: the double-layer steel bar mesh is respectively an upper steel bar mesh and a lower steel bar mesh, a plurality of reserved holes are provided on the side wall of the reserved hole, both the upper steel bar mesh and the lower steel bar mesh extend into the reserved holes, a plurality of lifting rings made of steel bars are provided on the precast part, the lifting rings are connected to the steel bars in the precast part, and the lower steel bar mesh and the upper steel bar mesh are respectively connected to the lifting rings through a plurality of connecting steel bars.

4. A cast-in-place concrete closed pool structure according to claim 3, characterized in that: the steel bars in the cast-in-place part are connected to the upper steel bar mesh.

5. A construction method for a cast-in-place concrete closed pool structure, characterized in that: this method is used for constructing the cast-in-place concrete closed pool structure according to any one of claims 1-4, and this method includes the following steps: S1: Pour the pool body of the closed pool and set a reserved hole on the top plate of the pool body; S2: Remove the formwork and supports used for pouring the pool body in step S1, clean the inside of the pool body, and transport the vehicle materials and garbage inside the pool body out through the reserved hole; S3: Make the precast part of the cover body, and place the precast part into the reserved hole; pour the cast-in-place part of the cover body to make the cover body and the top plate cast into an integral whole.

6. A construction method for a cast-in-place concrete closed pool structure according to claim 5, characterized in that: the method for setting the reserved hole on the top plate of the pool body in step S1 is: install a sub-mold with a frustum structure at a predetermined position on the formwork for pouring the top plate; the method for making the precast part of the cover body in step S3 is: lay a steel bar mesh at the bottom of the mother mold with a frustum structure and connect lifting rings on the steel bar mesh; wherein the sub-mold and the mother mold have the same shape, and the outer wall of the sub-mold can be closely attached to the inner wall of the mother mold.

7. A construction method for a cast-in-place concrete closed pool structure according to claim 6, characterized in that: during the process of pouring the top plate in step S1, connect reinforcing steel bars at the part close to the steel bar mesh, the reinforcing steel bars extend to the edge of the reserved hole, and wrap the end of the partial reinforcing steel bars with colloid; and after the reserved hole is formed, remove the colloid to form a plurality of connecting holes on the edge of the reserved hole to expose the reinforcing steel bars.

8. A construction method of a cast-in-place concrete closed pool structure according to claim 7, characterized in that: In step S3, before pouring the cast-in-place part of the cover body, the reinforcement bars in the top plate are connected to the hanging rings on the precast part through connecting steel bars, and the reinforcement bars in different connecting holes are connected through connecting steel bars, so that the connecting steel bars form a steel bar mesh in the cast-in-place part.

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