Basement bottom plate high-low ridge pouring formwork structure

Abstract

The utility model relates to a basement bottom plate high-low ridge pouring formwork structure which comprises a brick forming die, a plate bottom reinforcing mesh arranged on the surface of the brick forming die and a plate face reinforcing mesh located above the plate bottom reinforcing mesh, and a support assembly used for erecting the plate face reinforcing mesh is arranged on the upper side of the plate bottom reinforcing mesh. A concrete structure layer is poured between the plate surface reinforcing mesh and the plate bottom reinforcing mesh; the plate face reinforcing mesh is of a step-shaped structure and comprises a first reinforcing mesh, a second reinforcing mesh located above the first reinforcing mesh and a third reinforcing mesh longitudinally connected between the first reinforcing mesh and the second reinforcing mesh, and the first reinforcing mesh is provided with a first reinforcing mesh body which transversely extends into the concrete structure layer in the direction facing the second reinforcing mesh body. The extension steel bar is connected with the bracket assembly; a side formwork is arranged on the outer side of the third reinforcing mesh and provided with a tie assembly. The formwork is simple and reliable in structure, high in formwork supporting strength and rapid and convenient to construct.

Description

Technical Field

[0001] The utility model relates to the field of building foundations, and particularly to a casting formwork structure for high and low sills of a basement floor slab. Background Technique

[0002] In construction projects, the basement floor slab is an important part of the overall building structure, and its construction quality and stability have important impacts on the safety and service life of the entire building.

[0003] The structure at the node of the traditional high and low sills of the basement floor slab is complex, and there are various problems in the formwork support and casting process at the node. First of all, the stability of the traditional formwork structure is poor, which may cause the formwork to deform and shift during the casting process, thereby affecting the casting quality. Secondly, the construction efficiency is low. Due to the complexity and stability problems of the formwork structure, a large amount of time and labor are required during the construction process for the erection, fixation, and removal of formworks of various specifications, thus increasing the construction cost. In addition, due to the unreasonable design of the existing formwork structure at the high and low sills of the floor slab, it may also lead to uneven casting quality, and even quality problems such as slurry leakage and cracks. Content of the Utility Model

[0004] The purpose of the utility model is to provide a casting formwork structure for high and low sills of a basement floor slab, which has a simple and reliable structure, high formwork support strength, and is fast and convenient for construction.

[0005] The purpose of the utility model is achieved through the following technical solutions: a casting formwork structure for high and low sills of a basement floor slab, which includes a brick formwork, a bottom plate steel mesh arranged on the surface of the brick formwork, and a top plate steel mesh located above the bottom plate steel mesh. A support assembly for erecting the top plate steel mesh is arranged on the upper side of the bottom plate steel mesh, and a concrete structure layer is cast between the top plate steel mesh and the bottom plate steel mesh; the top plate steel mesh is in a stepped structure, which includes a third steel mesh arranged vertically, a first steel mesh connected to the bottom of the third steel mesh, and a second steel mesh connected to the top of the third steel mesh. The first steel mesh is provided with an extension steel bar extending horizontally into the concrete structure layer and connected to the support assembly in the direction towards the second steel mesh; a side formwork is arranged outside the third steel mesh and abuts against it, and a tie assembly connected to the top plate steel mesh or the support assembly is arranged on the side formwork, and the height of the side formwork is higher than the height of the third steel mesh.

[0006] Compared with the prior art, the advantages of the utility model are as follows:

[0007] 1. By arranging a support assembly on the upper side of the bottom plate steel mesh, and connecting the top plate steel mesh to the support assembly through the extension steel bar, the top plate steel mesh transfers the stress to the bottom plate steel mesh through the support assembly, achieving the effect of improving the structural strength and integrity;

[0008] 2. Through the cooperation of the side formwork, the tie components and the support components, the first through-wall screw in the tie components is fixedly connected to the second steel mesh sheet, and the second through-wall screw is fixedly connected to the second erection steel bar, achieving the effect of improving the formwork support stability of the side formwork;

[0009] 3. Through the cooperation of the support, the cushion block and the positioning channel steel, the side formwork does not displace and deform during the pouring process, improving the construction quality of the basement floor slab during the pouring process. Brief Description of the Drawings

[0010] Figure 1 is a schematic diagram of a casting formwork structure for the high and low sills of a basement floor slab of the present utility model;

[0011] Figure 2 is a structural diagram of the steel mesh sheet on the surface of the plate of the present utility model;

[0012] Figure 3 is a structural diagram of the tie components of the present utility model.

[0013] Label Description: 1 brick formwork, 2 bottom plate steel mesh sheet, 3 surface plate steel mesh sheet, 31 first steel mesh sheet, 32 second steel mesh sheet, 33 third steel mesh sheet, 34 extended steel bar, 4 support components, 5 concrete structure layer, 6 side formwork, 7 tie components, 71 first through-wall screw, 72 second through-wall screw, 73 nut locking piece, 8 support, 9 cushion block, 10 positioning channel steel. Detailed Embodiment

[0014] The following will describe the content of the present utility model in detail with reference to the accompanying drawings of the specification and embodiments:

[0015] As Figures 1-3 shown, it is a schematic diagram of an embodiment of a casting formwork structure for the high and low sills of a basement floor slab provided by the present utility model.

[0016] A casting formwork structure for the high and low sills of a basement floor slab, which includes a brick formwork 1, a bottom plate steel mesh sheet 2 provided on the surface of the brick formwork 1, and a surface plate steel mesh sheet 3 located above the bottom plate steel mesh sheet 2. A support component 4 for erecting the surface plate steel mesh sheet 3 is provided on the upper side of the bottom plate steel mesh sheet 2, and a concrete structure layer 5 is cast between the surface plate steel mesh sheet 3 and the bottom plate steel mesh sheet 2;

[0017] The surface plate steel mesh sheet 3 has a stepped structure, which includes a third steel mesh sheet 33 arranged vertically, a first steel mesh sheet 31 connected to the bottom of the third steel mesh sheet 33, and a second steel mesh sheet 32 connected to the top of the third steel mesh sheet 33. The first steel mesh sheet 31 is provided with an extended steel bar 34 that extends horizontally into the concrete structure layer 5 and is connected to the support component 4 in the direction of the second steel mesh sheet 32;

[0018] A side formwork 6 is provided outside the third steel bar mesh 33 and abuts against it. A tie assembly 7 for connecting with the slab surface steel bar mesh 3 or the support assembly 4 is provided on the side formwork 6, and the height of the side formwork 6 is higher than that of the third steel bar mesh 33.

[0019] The support assembly 4 includes a first erection steel bar 41 located between the slab surface steel bar mesh 3 and the slab bottom steel bar mesh 2 and a second erection steel bar 42 fixedly connected between the extended steel bar 34 and the slab bottom steel bar mesh 2.

[0020] The tie assembly 7 includes a first through-wall screw 71 passing through the upper part of the side formwork 6 and connected to the second steel bar mesh 32 and a second through-wall screw 72 passing through the lower part of the side formwork 6 and connected to the second erection steel bar 42. Nut locking members 73 for screwing and locking the side formwork 6 are provided on both the first through-wall screw 71 and the second through-wall screw 72.

[0021] The first through-wall screw 71 is horizontally arranged, and its rod extends transversely into the second steel bar mesh 32 and is fixedly connected to the second steel bar mesh 32. The second through-wall screw 72 is arranged obliquely downward, and its rod extends into the second erection steel bar 42 and is fixedly connected to the second erection steel bar 42.

[0022] A support member 8 for assisting the side formwork 6 to maintain stability is obliquely arranged between the side formwork 6 and the surface of the first steel bar mesh 31.

[0023] A cushion block 9 is provided between the support member 8 and the first steel bar mesh 31, and the cushion block 9 is used for buffering the stress transmitted by the support member 8.

[0024] A positioning channel steel 10 fixedly connected to the first steel bar mesh 31 is provided at the bottom of the cushion block 9.

[0025] A positioning channel steel 10 fixedly connected to the first steel bar mesh 31 is provided at the bottom of the side formwork 6.

[0026] The concrete structure layer 5 is cast in layers;

[0027] A sealant strip for preventing slurry leakage is filled at the joint where the side formwork 6 abuts against the third steel bar mesh 33;

[0028] Both the first erection steel bar 41 and the second erection steel bar 42 are stool bars;

[0029] The support member 8 is a wooden square. The upper part of the support member 8 abuts against the side formwork 6, and the horizontal angle between it and the side formwork is 60°.

[0030] The construction method of the utility model is generally as follows:

[0031] First, lay the bottom slab steel mesh 2 on the existing formwork structure layer 1 of bricks, and securely fix the edge of the bottom slab steel mesh 2 to the formwork structure layer of bricks or other structures. Subsequently, install the support assembly 4 on the upper side of the bottom slab steel mesh 2, place the top slab steel mesh 3 on the support assembly 4, and fixedly connect the extended steel bars 34 in the top slab steel mesh 3 to the support assembly 4.

[0032] Subsequently, pour concrete in layers between the top slab steel mesh 3 and the bottom slab steel mesh 2. Pour the concrete for the first time until its pouring surface is flush with the horizontal plane of the first steel mesh 31. When the concrete poured for the first time hardens to a certain strength, weld two positioning channel steels 10 on the first steel mesh 31. One of the positioning channel steels 10 is provided at the joint of the first steel mesh 31 and the third steel mesh 33. Insert the side formwork 6 into the positioning channel steel 10. Subsequently, pass the tie assembly 7 through the side formwork 6, and fixedly connect the first wall-piercing screw 71 in the tie assembly 7 to the second steel mesh 32 and the second wall-piercing screw 72 to the support assembly 4 to ensure the formwork stability of the side formwork 6.

[0033] Subsequently, lock and tighten the first wall-piercing screw 71, the second wall-piercing screw 72 and the side formwork 6 with nut locking pieces 73. Obliquely arrange the support member 8 between the side formwork 6 and the first steel mesh 31. The other positioning channel steel 10 is provided below the support member 8. Place the cushion block 9 for supporting the support member 8 in the positioning channel steel 10. Subsequently, pour the concrete for the second time until the pouring surface is flush with the horizontal plane of the second steel mesh 32. After the concrete poured for the second time hardens, the first concrete pouring structure and the second concrete pouring structure jointly form the concrete structure layer 5.

[0034] After the concrete poured for the second time reaches a certain degree, remove the side formwork 6, and according to the actual situation, the two positioning channel steels 10 and the tie assembly 7 extending outside the concrete structure layer 5 can be used as subsequent welded embedded components or cut and removed.

[0035] The above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent replacements or changes, and should be covered by the protection scope of the present utility model.

Claims

1. A basement floor high and low sill casting formwork structure, characterized by: It comprises a brick membrane (1), a bottom steel mesh sheet (2) arranged on the surface of the brick membrane (1), and a surface steel mesh sheet (3) located above the bottom steel mesh sheet (2), a bracket assembly (4) for supporting the surface steel mesh sheet (3) is arranged on the upper side of the bottom steel mesh sheet (2), and a concrete structure layer (5) is cast between the surface steel mesh sheet (3) and the bottom steel mesh sheet (2); The plate surface steel mesh (3) is of a stepped structure, comprising a third steel mesh (33) arranged vertically, a first steel mesh (31) connected to the bottom of the third steel mesh (33), and a second steel mesh (32) connected to the top of the third steel mesh (33), wherein the first steel mesh (31) is provided with an extension steel bar (34) extending transversely into the concrete structure layer (5) and connected to the bracket assembly (4) in the direction of the second steel mesh (32); A side template (6) is provided on the outside of the third steel mesh (33) and is in contact with the third steel mesh. A tie assembly (7) connected to the plate surface steel mesh (3) or the bracket assembly (4) is provided on the side template (6). The height of the side template (6) is higher than the height of the third steel mesh (33).

2. The basement floor high and low sill casting formwork structure according to claim 1 is characterized by: The support assembly (4) comprises a first frame steel bar (41) located between the slab surface steel mesh (3) and the slab bottom steel mesh (2), and a second frame steel bar (42) fixedly connected between the extension steel bar (34) and the slab bottom steel mesh (2).

3. The basement floor high and low sill casting formwork structure according to claim 2 is characterized by: The tie assembly (7) comprises a first through-wall screw (71) which is inserted through the upper portion of the side formwork (6) and connected to the second steel mesh (32), and a second through-wall screw (72) which is inserted through the lower portion of the side formwork (6) and connected to the second erection steel bar (42). The first through-wall screw (71) and the second through-wall screw (72) are both provided with a nut locking member (73) for screwing and locking the side formwork (6).

4. The basement floor high and low sill casting formwork structure according to claim 3 is characterized by: The first through-wall screw (71) is arranged horizontally, and its rod portion extends transversely into the second steel mesh (32) and is fixedly connected to the second steel mesh (32); the second through-wall screw (72) is arranged downwardly inclined, and its rod portion extends into the second upright steel bar (42) and is fixedly connected to the second upright steel bar (42).

5. The basement floor high and low sill casting formwork structure according to claim 1 is characterized by: A support member (8) is provided obliquely between the side formwork (6) and the surface of the first steel mesh sheet (31) to assist the side formwork (6) in maintaining stability.

6. The basement floor high and low sill casting template structure according to claim 5 is characterized by: A cushion block (9) is provided between the support member (8) and the first steel mesh (31).

7. The basement floor high and low sill casting formwork structure according to claim 6 is characterized by: The bottom of the cushion block (9) is provided with a positioning channel steel (10) fixedly connected to the first steel mesh sheet (31).

8. The basement floor high and low sill casting formwork structure according to claim 1 is characterized by: The bottom of the side formwork (6) is provided with a positioning channel steel (10) fixedly connected to the first steel mesh sheet (31).

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