Fabricated concrete pool with pouring type top plate

Abstract

The assembly type concrete pool comprises the top plate, straight side plates, angle side plates and a bottom plate, the straight side plates and the angle side plates are all prefabricated plates, a base plate is a cast-in-place whole plate or a prefabricated plate, the straight side plates, the angle side plates and the bottom plate are spliced to form a frame structure with an opening in the upper end, and the bottom plate is a cast-in-place whole plate or a cast-in-place whole plate or a cast-in-place whole plate or a cast-in-place whole plate or a cast-in-place whole plate. A support is arranged in the frame structure, the top plate comprises a bottom plate, a cement mortar layer and a reinforcing mesh layer, the outer periphery of the bottom plate is laid on the upper end edge face of the frame structure, the middle of the bottom plate is in lap joint with the upper end face of the support, the reinforcing mesh layer is laid above the bottom plate, and the cement mortar layer is poured and formed on the reinforcing mesh layer. The top plate is formed through cast-in-place, it is ensured that the overall manufacturing period is not greatly prolonged, the waterproof, anti-seepage, anti-cracking and anti-seismic performance and the overall structural strength of the top plate are improved, and therefore it is ensured that the water pool is good in long-term use sealing performance; the bottom plate can serve as a bottom formwork, the formwork erecting difficulty in the on-site construction pouring process of the pool top plate is reduced, and the pouring construction efficiency of the pool top plate can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of assembled pool, specifically relates to an assembled concrete pool with pouring type roof plate. BACKGROUND

[0002] The concrete pool is a large water storage container, which is applied in various fields, such as fire fighting system, industrial system, agricultural system and the like. The assembled concrete pool with pouring type roof plate is formed by assembling components such as prefabricated concrete slabs, steel members and sealing rubber strips on site, which can achieve the construction goals of safety, durability, fast construction speed and environmental pollution reduction, minimize building sewage and garbage pollution, reduce building noise and improve construction quality.

[0003] At present, the pool roof plate of the assembled concrete pool with pouring type roof plate is mostly connected into a whole by splicing prefabricated roof plate units with large area size and then filling and curing joints with cement mortar. The pool roof plate with the structure has the following problems: (1) the joint position of the roof plate unit is prone to cracks due to the direct exposure of the pool roof plate to sunlight, wind, sunlight exposure, winter cold and other environmental factors, thereby leading to the increasingly poor sealing performance of the pool with the extension of service life; (2) in order to reduce the joint position of the pool roof plate and reduce the crack probability of the joint position of the roof plate, the area size of the prefabricated roof plate unit is usually large, thereby the self weight of the prefabricated roof plate unit is large, which leads to the inconvenience of transportation operation of the prefabricated roof plate unit, high transportation cost and high risk of jolting and cracking during transportation, thereby increasing the construction cost of the assembled concrete pool with pouring type roof plate. SUMMARY

[0004] The utility model discloses a kind of assembled concrete pools with pouring type roof plate, straight side plate and angle side plate are all prefabricated board piece, substrate is on-site pouring whole board or prefabricated board piece, roof plate is on-site pouring molding, under the condition that ensuring that the overall manufacturing period of pool will not be greatly extended, the waterproof, anti-permeation, anti-cracking, anti-seismic performance and overall structural strength of pool roof plate are improved, so as to ensure that pool has good sealing performance for long-term use;Compared with conventional prefabricated pool roof plate, the transportation pressure of pool roof plate is significantly reduced, and economic benefit is good;Wherein bottom plate can act as bottom mold plate in the process of roof plate pouring construction, reduce the formwork difficulty in the process of pool roof plate on-site construction pouring, help to improve the pouring construction efficiency of pool roof plate.

[0005] To achieve the above objectives, the technical solution of this utility model is to design a prefabricated concrete water tank with a cast-in-place top slab, including a top slab, straight side slabs, corner side slabs, and a base plate. The straight side slabs and corner side slabs are precast panels, and the base plate is a cast-in-place whole slab or a precast panel. The straight side slabs, corner side slabs, and base plate are spliced ​​together to form a frame structure with an open top. The frame structure has a bracket inside for supporting the top slab and tightening the side slabs. The top slab includes a bottom slab, a cement mortar layer, and a steel mesh layer. The outer periphery of the bottom slab is laid on the upper edge of the frame structure, and the middle of the bottom slab overlaps the upper surface of the bracket. The steel mesh layer is laid on top of the bottom slab, and the cement mortar layer is cast on the steel mesh layer.

[0006] This utility model discloses a prefabricated concrete water tank with a cast-in-place top slab. Its straight and corner side panels are precast components, the base plate is a cast-in-place whole slab or a precast component, and the top slab is cast in-situ. While ensuring the overall manufacturing period of the water tank is not significantly extended, it improves the waterproofing, seepage prevention, crack resistance, earthquake resistance, and overall structural strength of the top slab, thus ensuring good sealing performance for long-term use of the water tank. Compared to conventional precast water tank top slabs, it significantly reduces the transportation burden of the top slab, resulting in good economic benefits. Furthermore, the base slab can serve as the bottom formwork during the top slab casting process, reducing the difficulty of formwork support during on-site construction and improving the efficiency of the top slab casting process.

[0007] The preferred technical solution is that both the straight side panels and the corner side panels are internally reinforced with vertical steel bars extending to the outside. The steel mesh is composed of several spaced-apart horizontal and vertical steel bars, and the ends of the horizontal and vertical steel bars are anchored or welded to the corresponding ends of the vertical steel bars. The ends of the horizontal and vertical steel bars in the steel mesh are fixedly connected to the exposed ends of the vertical steel bars on the corresponding side panels, thereby ensuring the stability of the connection between the top slab of the pool and the frame structure, and thus ensuring the overall structural stability of the pool.

[0008] A further preferred technical solution is that the base plate is a corrugated sheet made of light steel. The corrugated sheet has good adhesion to the cement mortar layer, preventing peeling between the base plate and the cement mortar layer, thereby ensuring the overall stability of the pool roof.

[0009] A further preferred technical solution is that the base plate is composed of several base plate units spliced ​​and welded together. The base plate units have a small area, which facilitates the transportation of raw materials and significantly reduces transportation burden.

[0010] A further preferred technical solution involves sealing and fixing adjacent straight side panels and adjacent straight side panels with corner side panels using connecting components. These connecting components include two clamps, each corresponding to one of the two sides of the joint between the straight side panels or the joint between adjacent straight side panels and corner side panels. The two clamps are secured together with several bolts. Sealing gaskets are placed between the clamps and the straight side panels, and between the clamps and the corner side panels. This sealing and fixing connection between adjacent straight side panels and adjacent straight side panels with corner side panels ensures good waterproofing performance of the assembled frame structure. Furthermore, the simple structure of the connecting components ensures efficient assembly and construction of the frame structure.

[0011] A further preferred technical solution includes a bracket comprising several columns, several horizontal beams, several longitudinal beams, and several tie rods. The horizontal and longitudinal beams are arranged in a staggered cross pattern at the top of the columns, with each cross intersection of the horizontal and longitudinal beams fixed to the top of the column. The ends of the horizontal and longitudinal beams are fixedly connected to corresponding clamps. A cross-shaped mounting seat is fixed in the middle of each column. Several tie rods are arranged in a cross pattern around the outer side of the middle of the column. One end of each tie rod is fixedly connected to the cross-shaped mounting seat on the column, and the other end is fixedly connected to a corresponding clamp or to a cross-shaped mounting seat on an adjacent column. The bracket structure is simple and reasonable in design, highly stable, and provides good support stability for the top plate, thereby ensuring the overall stability and high structural strength of the concrete water tank.

[0012] A further preferred technical solution includes: a plurality of column mounting seats are fixedly fixed at intervals on the upper surface of the base plate, and the lower ends of the plurality of columns are fixedly installed on the column mounting seats one by one; a tie rod mounting seat is fixedly fixed in the middle of the clamping plate inside the water tank, and the end of the tie rod located on the outer periphery of the support away from the column is fixedly installed on the tie rod mounting seat; both the crossbeam and the longitudinal beam are channel steel, and both ends are vertically fixed with sealing plates with mounting holes, and both ends are fixedly connected to the upper end of the corresponding clamping plate through sealing plates and bolts. The column mounting seats improve the installation firmness and convenience of the columns on the base plate, the tie rod mounting seats facilitate the fixed connection of the tie rods and the clamping plate, and the fixed connection method of the crossbeams, longitudinal beams and clamping plates is simple, further ensuring the convenience and efficiency of the support installation.

[0013] A further preferred technical solution includes longitudinal tongue-and-groove joints on the vertical end faces of the flat side plates and the corner side plates, respectively, with adjacent longitudinal tongue-and-groove joints forming a grouting cavity for pouring; semi-circular holes spaced along the length direction are correspondingly provided on the vertical end faces of the flat side plates and the corner side plates, with adjacent semi-circular holes forming a channel for the fastening bolts to pass through. Concrete can be poured into the grouting cavity to ensure the sealing and firmness of the side plate joints; the interlocking of adjacent semi-circular holes on the side plates forms a channel for the fastening bolts to pass through, allowing the fastening bolts on the connecting components to pass through, avoiding secondary drilling on the flat or corner side plates during pool construction, and ensuring the convenience and efficiency of pool assembly.

[0014] A further preferred technical solution is that the outer periphery of the upper surface of the substrate is provided with a side plate mounting groove, the lower ends of the straight side plate and the lower ends of the corner side plate are respectively cast into the corresponding side plate mounting grooves on the substrate, and the upper surface of the substrate is also provided with a water collection groove.

[0015] The advantages and beneficial effects of this utility model are as follows:

[0016] 1. This utility model discloses a prefabricated concrete water tank with a cast-in-place top slab. The straight side panels and corner side panels are precast slabs, the base plate is a cast-in-place whole slab or a precast slab, and the top slab is cast in-situ. While ensuring that the overall manufacturing period of the water tank is not significantly extended, the waterproof, seepage-proof, crack-resistant, and earthquake-resistant properties of the water tank top slab, as well as the overall structural strength, are improved, thus ensuring good sealing performance for long-term use of the water tank. Compared with conventional precast water tank top slabs, the transportation pressure of the water tank top slab is significantly reduced, resulting in good economic benefits. The base slab can serve as the bottom formwork during the top slab casting process, reducing the difficulty of formwork support during on-site construction of the water tank top slab and helping to improve the efficiency of the water tank top slab casting process.

[0017] 2. The ends of the transverse and longitudinal steel bars in the steel mesh layer are fixedly connected to the ends of the exposed vertical steel bars on the corresponding side plates, thereby ensuring the stability of the connection between the top slab of the water tank and the frame structure, that is, ensuring the overall structural stability of the water tank.

[0018] 3. The base plate is a corrugated sheet made of light steel. The corrugated sheet has good adhesion to the cement mortar layer, preventing peeling between the base plate and the cement mortar layer, thus ensuring the overall stability of the pool roof.

[0019] 4. The base plate is assembled and welded together from several base plate units. The base plate units have a small area, which facilitates the transportation of raw materials and significantly reduces transportation pressure. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of a prefabricated concrete water tank with a cast-in-place roof slab according to the present invention.

[0021] Figure 2 This is a schematic diagram of the corner position of the top slab of an assembled concrete water tank with a cast-in-place top slab according to the present invention (the cement mortar layer is hidden).

[0022] Figure 3 This is a schematic diagram of the internal structure of an assembled concrete water tank with a cast-in-place top slab (top slab hidden).

[0023] Figure 4 This is a schematic diagram of the three-dimensional structure of the flat side panel;

[0024] Figure 5 yes Figure 4 A magnified view of a section at point F in the middle;

[0025] Figure 6 This is a schematic diagram of the three-dimensional structure of the corner side plate;

[0026] Figure 7 yes Figure 6 A magnified view of a section at point H in the middle;

[0027] Figure 8 It is an assembly diagram showing the relationship between columns, tie rods, crossbeams, and longitudinal beams;

[0028] Figure 9 It is an assembly diagram showing the relationship between the straight side panels, tie rods, and longitudinal beams;

[0029] Figure 10 This is a schematic diagram of the three-dimensional structure of the base plate;

[0030] Figure 11 It is a diagram showing the laying relationship between the base slab and the steel mesh layer at the top of the frame structure;

[0031] Figure 12 This is a longitudinal sectional view along the length of the longitudinal beam of an assembled concrete water tank with a cast-in-place top slab according to this utility model.

[0032] Figure 13 yes Figure 12 A magnified view of a section at point S in the middle;

[0033] Figure 14 It is an assembly diagram of the lower end of the flat side plate on the base plate.

[0034] In the diagram: 1. Top plate; 2. Straight side plate; 3. Corner side plate; 4. Base plate; 5. Clamping plate; 6. Fastening bolt; 7. Column; 8. Column mounting base; 9. Horizontal beam; 10. Longitudinal beam; 11. Tie bar; 12. Cross-shaped mounting base; 13. Tie bar mounting base; 14. Longitudinal tongue and groove; 15. Grouting cavity; 16. Semi-circular hole; 1-1. Base plate; 1-2. Cement mortar layer; 4-1. Side plate mounting groove; 4-2. Water collection trough; A. Vertical reinforcement; B. Horizontal reinforcement; C. Longitudinal reinforcement. Detailed Implementation

[0035] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0036] Example

[0037] like Figures 1-14 As shown, this utility model is a prefabricated concrete water tank with a cast-in-place top slab, including a top slab 1, straight side slabs 2, corner side slabs 3, and a base plate 4. The straight side slabs 2 and corner side slabs 3 are precast panels, and the base plate 4 is a cast-in-place whole slab or a precast panel. The straight side slabs 2, corner side slabs 3, and base plate 4 are spliced ​​to form a frame structure with an open top. The frame structure has a bracket inside for supporting the top slab 1 and tightening the side slabs. The top slab 1 includes a bottom slab 1-1, a cement mortar layer 1-2, and a steel mesh layer. The outer periphery of the bottom slab 1-1 is laid on the upper edge of the frame structure, and the middle of the bottom slab 1-1 overlaps the upper surface of the bracket. The steel mesh layer is laid on top of the bottom slab, and the cement mortar layer 1-2 is cast on the steel mesh layer.

[0038] Preferably, both the straight side plate 2 and the corner side plate 3 are filled with vertical steel bars A extending to the outside. The steel mesh is made of several horizontal steel bars B and longitudinal steel bars C arranged at intervals. The ends of the horizontal steel bars B and the ends of the longitudinal steel bars C are anchored or welded to the ends of the corresponding vertical steel bars A.

[0039] More preferably, the base plate 1-1 is a corrugated plate made of light steel.

[0040] More preferably, the base plate 1-1 is formed by splicing and welding together several base plate units.

[0041] More preferably, the adjacent straight side plates 2 and the adjacent straight side plates 2 and corner side plates 3 are sealed and fixedly connected by a connecting assembly. The connecting assembly includes two clamping plates 5, which correspond to the two sides of the joint of the straight side plate 2 or the two sides of the joint of the adjacent straight side plate 2 and corner side plate 3, respectively. The two corresponding clamping plates 5 are fixed and clamped by several fastening bolts 6. Sealing gaskets are provided between the clamping plates 5 and the straight side plate 2 and between the clamping plates 5 and the corner side plate 3.

[0042] More preferably, the support includes several columns 7, several crossbeams 9, several longitudinal beams 10, and several tie rods 11. The crossbeams 9 and longitudinal beams 10 are arranged in a cross-shaped staggered pattern at the top of the columns 7, and the intersection points of the crossbeams 9 and longitudinal beams 10 are fixed to the top of the columns 7 one by one. The ends of the crossbeams 9 and longitudinal beams 10 are respectively fixedly connected to the corresponding clamps 5. A cross-shaped mounting seat 12 is fixedly provided in the middle of the columns 7. Several tie rods 11 are arranged in a cross-shaped pattern around the outer side of the middle of the columns 7. One end of the tie rod 11 is fixedly connected to the cross-shaped mounting seat 12 on the columns 7, and the other end of the tie rod 11 is fixedly connected to the corresponding clamps 5 or to the cross-shaped mounting seat 12 on the adjacent columns 7.

[0043] More preferably, a plurality of column mounting seats 8 are fixedly provided at intervals on the upper surface of the substrate 4, and the lower ends of the plurality of columns 7 are fixedly installed on the column mounting seats 8 one by one; a tie rod mounting seat 13 is fixedly provided in the middle of the clamping plate 5 located inside the pool, and the end of the tie rod 11 located on the outer periphery of the bracket away from the column 7 is fixedly installed on the tie rod mounting seat 13; the crossbeam 9 and the longitudinal beam 10 are both channel steel, and both ends are vertically fixedly provided with sealing plates with mounting holes, and both ends are fixedly connected to the upper end of the corresponding clamping plate 5 through sealing plates and bolts.

[0044] More preferably, longitudinal tongue and groove joints 14 are provided on the vertical end face of the flat side plate 2 and the vertical end face of the corner side plate 3, and adjacent longitudinal tongue and groove joints 14 are joined together to form a grouting cavity 15 for pouring; semi-circular holes 16 are provided on the vertical end face of the flat side plate 2 and the vertical end face of the corner side plate 3 respectively, and adjacent semi-circular holes 16 are joined together to form a channel for passing through the fastening bolt 6.

[0045] More preferably, the outer periphery of the upper surface of the substrate 4 is provided with a side plate mounting groove 4-1, the lower ends of the straight side plate 2 and the lower ends of the corner side plate 3 are respectively cast into the corresponding side plate mounting grooves 4-1 on the substrate 4, and the upper surface of the substrate 4 is also provided with a water collection groove 4-2.

[0046] The construction principle of this utility model for a prefabricated concrete water tank with a cast-in-place roof slab is as follows:

[0047] Step 1: Excavate the foundation, confirm the elevation and flatness of the foundation surface, pour the base plate 4, and reserve the side plate installation groove 4-1 and water collection trough 4-2 on the base plate 4, wherein the water collection trough 4-2 is used to connect with the pump room equipment pipeline;

[0048] Step 2: After the substrate 4 has cured, several column mounting bases 8 are fixedly installed on the upper surface of the substrate 4 using expansion bolts. Then, several straight side plates 2 and corner side plates 3 are placed and poured into the side plate mounting grooves 4-1 on the substrate 4. The adjacent straight side plates 2 and the adjacent straight side plates 2 and corner side plates 3 are sealed and fixedly connected by connecting components to form a frame structure with an open top. The grouting cavity 15 at the joint of the straight side plate 2 and the grouting cavity 15 at the joint of the corner side plate 3 and the straight side plate 2 are all sealed with concrete.

[0049] Step 3: Erect a support frame within the frame structure formed by the straight side plate 2 and the corner side plate 3. Lay a base plate 1-1 on the upper edge of the frame structure formed by the straight side plate 2 and the corner side plate 3 and on the top of the support frame. Then lay a steel mesh layer on the base plate 1-1. The ends of the transverse steel bars B and the ends of the longitudinal steel bars C in the steel mesh layer are anchored or welded to the ends of the corresponding vertical steel bars A on the side plate.

[0050] Step 4: Side formwork will be erected on the outer periphery of the base slab 1-1 and the steel mesh layer. The side formwork and the base slab 1-1 will form a mold cavity with an open top. A certain amount of cement mortar will be poured into the mold cavity. After the cement mortar has cured, a cement mortar layer 1-2 will be formed. Then, the base slab 1-1, the steel mesh layer and the cement mortar layer 1-2 will form a top slab 1 cast as a whole.

[0051] This utility model discloses a prefabricated concrete water tank with a cast-in-place top slab. Its straight and corner side panels are precast components, the base plate is a cast-in-place whole slab or a precast component, and the top slab is cast in-situ. While ensuring the overall manufacturing period of the water tank is not significantly extended, it improves the waterproofing, seepage prevention, crack resistance, earthquake resistance, and overall structural strength of the top slab, thus ensuring good sealing performance for long-term use of the water tank. Compared to conventional precast water tank top slabs, it significantly reduces the transportation burden of the top slab, resulting in good economic benefits. Furthermore, the base slab can serve as the bottom formwork during the top slab casting process, reducing the difficulty of formwork support during on-site construction and improving the efficiency of the top slab casting process.

[0052] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A prefabricated concrete water tank with a cast-in-place top slab, comprising a top slab (1), straight side slabs (2), corner side slabs (3), and a base plate (4), wherein the straight side slabs (2) and corner side slabs (3) are precast panels, and the base plate (4) is a cast-in-place slab or a precast panel; the straight side slabs (2), corner side slabs (3), and base plate (4) are spliced ​​to form a frame structure with an open top; the frame structure is internally provided with a bracket for supporting the top slab (1) and tightening the side slabs, characterized in that... The top plate (1) includes a bottom plate (1-1), a cement mortar layer (1-2), and a steel mesh layer. The outer periphery of the bottom plate (1-1) is laid on the upper edge of the frame structure, and the middle of the bottom plate (1-1) overlaps the upper surface of the support. The steel mesh layer is laid on top of the bottom plate (1-1), and the cement mortar layer (1-2) is cast on the steel mesh layer. Thus, the bottom plate (1-1), the steel mesh layer, and the cement mortar layer (1-2) form an integrally cast top plate (1). The bottom plate (1-1) is a corrugated plate.

2. The prefabricated concrete water tank with a cast-in-place roof slab as described in claim 1, characterized in that, The straight side plate (2) and the corner side plate (3) are both filled with vertical steel bars (A) extending to the outside. The steel mesh is made of several horizontal steel bars (B) and longitudinal steel bars (C) arranged at intervals. The ends of the horizontal steel bars (B) and the ends of the longitudinal steel bars (C) are anchored or welded to the ends of the corresponding vertical steel bars (A).

3. The prefabricated concrete water tank with a cast-in-place roof slab as described in claim 2, characterized in that, The base plate (1-1) is made of light steel.

4. The prefabricated concrete water tank with a cast-in-place roof slab as described in claim 3, characterized in that, The base plate (1-1) is formed by splicing and welding several base plate units together.

5. The prefabricated concrete water tank with a cast-in-place roof slab as described in any one of claims 1 to 4, characterized in that, The adjacent straight side plates (2) and the adjacent straight side plates (2) and the corner side plates (3) are sealed and fixedly connected by a connecting assembly. The connecting assembly includes two clamps (5). The two clamps (5) correspond to the two sides of the joint of the straight side plate (2) or the two sides of the joint of the adjacent straight side plate (2) and the corner side plate (3). The two corresponding clamps (5) are fixed and clamped by several fastening bolts (6). A sealing gasket is provided between the clamps (5) and the straight side plate (2) and between the clamps (5) and the corner side plate (3).

6. The prefabricated concrete water tank with a cast-in-place roof slab as described in claim 5, characterized in that, The support includes several columns (7), several crossbeams (9), several longitudinal beams (10), and several tie rods (11). The crossbeams (9) and several longitudinal beams (10) are arranged in a cross-shaped staggered pattern at the top of the column (7), and the cross intersections of the crossbeams (9) and longitudinal beams (10) are fixed to the top of the column (7) one by one. The ends of the crossbeams (9) and the ends of the longitudinal beams (10) are respectively fixedly connected to the corresponding clamps (5). A cross-shaped mounting seat (12) is fixedly provided in the middle of the column (7). Several tie rods (11) are arranged in a cross-shaped pattern around the outer side of the middle of the column (7). One end of the tie rod (11) is fixedly connected to the cross-shaped mounting seat (12) on the column (7), and the other end of the tie rod (11) is fixedly connected to the corresponding clamp (5) or to the cross-shaped mounting seat (12) on the adjacent column (7).

7. The prefabricated concrete water tank with a cast-in-place roof slab as described in claim 6, characterized in that, The upper surface of the substrate (4) is fixedly provided with several column mounting seats (8) at intervals, and the lower ends of several columns (7) are fixedly installed on the column mounting seats (8) one by one; the middle of the clamp (5) located inside the pool is fixedly provided with a tie rod mounting seat (13), and the end of the tie rod (11) located on the outer periphery of the bracket away from the column (7) is fixedly installed on the tie rod mounting seat (13); the cross beam (9) and the longitudinal beam (10) are both channel steel, and both ends are vertically fixedly provided with sealing plates with mounting holes, and both ends are fixedly connected to the upper end of the corresponding clamp (5) through sealing plates and bolts.

8. The prefabricated concrete water tank with a cast-in-place roof slab as described in claim 7, characterized in that, The vertical end face of the flat side plate (2) and the vertical end face of the corner side plate (3) are respectively provided with longitudinal tongue and groove (14), and the adjacent longitudinal tongue and groove (14) are joined together to form a grouting cavity (15) for pouring; the vertical end face of the flat side plate (2) and the vertical end face of the corner side plate (3) are respectively provided with semi-circular holes (16) distributed at intervals along the length direction, and the adjacent semi-circular holes (16) are joined together to form a channel for passing through the fastening bolt (6).

9. The prefabricated concrete water tank with a cast-in-place roof slab as described in claim 8, characterized in that, The upper surface of the substrate (4) is provided with a side plate mounting groove (4-1). The lower ends of the straight side plate (2) and the lower ends of the corner side plate (3) are respectively cast into the corresponding side plate mounting grooves (4-1) on the substrate (4). The upper surface of the substrate (4) is also provided with a water collection groove (4-2).

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