Circumferential cast-in-place ribbed floor formwork of CFRT

Abstract

The utility model relates to the technical field of cast-in-place multi-ribbed floors, in particular to a CFRT circulating type cast-in-place multi-ribbed floor formwork. Comprising a formwork body made of CFRT, an opening in the bottom of the formwork body extends outwards to form a frame, fixing holes are formed in the frame at intervals, and formwork removing holes are formed in the junction of the formwork body and the bottom of the frame at intervals. The CFRT formwork has the advantages of high strength, light weight, high strength and corrosion resistance, the thickness and width of the edge of the formwork can be effectively reduced, steel nails directly penetrate through fixing holes to fix the formwork to a lower-layer wood formwork, the abutted seam filling procedure is omitted, plates are saved, the problem that the formwork conflicts with column caps and the like cannot be caused due to the smaller edge size, meanwhile, the construction difficulty is reduced, and the construction efficiency is improved. The construction efficiency is improved, and the form removal efficiency can be improved through the form removal holes.

Description

Technical Field

[0001] The utility model relates to the technical field of cast-in-place dense-ribbed buildings, in particular to a CFRT turnover type cast-in-place dense-ribbed floor cover formwork. Background Art

[0002] Generally speaking, a one-way or two-way ribbed floor with a rib spacing of less than 1.5 meters is called a dense-ribbed floor. Since the two-way dense-ribbed floor bears loads in both directions, it has good stress-bearing performance and is widely used in (super) high-rise public buildings with large spans, large spaces, and high bearing capacity design requirements, such as shopping malls, office buildings, exhibition halls, teaching buildings, etc. Compared with ordinary reinforced concrete structural systems, it can effectively save concrete and steel, improve space utilization, reduce the weight of the floor slab, and improve bearing capacity. The ribbed floor can be constructed with formwork, which is generally made of polypropylene (commonly known as plastic) formwork. The plastic formwork has high strength, wear resistance, is not easy to age and crack, has low production cost, and is easy to process. It can replace wood and steel with plastic, which can save a lot of wood and steel and has good economic benefits. However, the plastic formwork is thick and the edge of the plastic formwork is thick, which leads to the need to use extruded boards or wooden formworks of equal thickness for joints. When extruded boards are used for joints, they will be deformed due to their insufficient strength, affecting the molding appearance. When wooden formworks are used, it will cause waste of board materials. The edge of the formwork is wide and close to the main beams and columns, which may easily cause conflicts between the main beams and column caps and the formwork. Cutting off the edge of the formwork will cause damage to the formwork and make it impossible to use it in rotation. The fixing method is complicated and improper design may easily cause leakage of slurry from the bottom gap of the formwork, low construction efficiency, waste of materials, and affect the molding quality. Utility Model Content

[0003] The utility model aims to solve the above problems, thereby providing a CFRT turnover type cast-in-place dense-rib floor formwork which saves joint construction.

[0004] The utility model solves the above problems and adopts the following technical solutions:

[0005] A CFRT turnover type cast-in-place dense-rib floor formwork comprises a formwork body made of CFRT, a frame extending outward from an opening at the bottom of the formwork body, fixing holes are arranged at intervals on the frame, and demoulding holes are arranged at intervals at the junction of the formwork body and the bottom of the frame.

[0006] Compared with the prior art, the utility model adopting the above technical solution has the following outstanding features:

[0007] The CFRT mold shell has high strength and has the advantages of being light, high-strength and corrosion-resistant. It can effectively reduce the thickness and width of the mold shell edge. Steel nails are used to directly pass through the fixing holes to fix the mold shell to the lower wooden formwork, eliminating the joint filling process and saving board materials. The smaller edge size will not cause problems such as conflicts between the mold shell and the column cap. At the same time, it also reduces the construction difficulty and improves the construction efficiency. The demolding efficiency can be improved through the demolding holes.

[0008] As a preferred embodiment, a further technical solution of the utility model is:

[0009] Furthermore, the inner side surface of the mold shell body is provided with reinforcing ribs that alternately run horizontally and vertically.

[0010] Furthermore, a connection block is provided between two adjacent reinforcing ribs and near the junction between the mold shell body and the frame, and the demoulding hole is a long hole and is provided on the outer side surface of the connection block.

[0011] Furthermore, the frame thickness is less than or equal to 3 cm.

[0012] Furthermore, the border width is less than or equal to 1 cm.

[0013] Furthermore, the outer side surface of the mold shell body is a smooth surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a bottom view of the structure of an embodiment of the utility model;

[0015] Figure 2 This is a schematic diagram of the top view of the structure of an embodiment of the utility model;

[0016] Figure 3 This is a schematic diagram of the main cross-sectional structure of an embodiment of the utility model;

[0017] Figure 4 This is a schematic diagram of a side cross-sectional structure of an embodiment of the utility model;

[0018] Marked in the figure are: mold shell body 1, frame 2, fixing hole 3, demoulding hole 4, and reinforcing rib 5. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with embodiments, the purpose of which is only to provide a better understanding of the content of the present invention. Therefore, the examples given do not limit the protection scope of the present invention.

[0020] A CFRT turnover type cast-in-place dense-rib floor formwork, including a formwork body 1 made of CFRT, the formwork body 1 is a bottom open structure, the formwork body 1 includes a top surface and four outwardly inclined side surfaces, a frame 2 extends outward from the opening at the bottom of the formwork body 1, the formwork body 1 and the frame 2 are integrally formed, fixing holes 3 are spaced apart on the frame 2, steel nails pass through the fixing holes 3 to be fixed to the lower wooden formwork, and demoulding holes 4 are spaced apart at the junction of the formwork body 1 and the bottom of the frame 2.

[0021] Furthermore, the inner side surface of the mold shell body 1 is provided with reinforcing ribs 5 that are alternately arranged horizontally and vertically to improve the stability of the mold shell and ensure the molding quality.

[0022] Furthermore, a connecting block is provided between two adjacent reinforcing ribs 5 and near the junction of the formwork body 1 and the frame 2. The connecting block is flush with the reinforcing rib 5. The demolding hole 4 is a long hole and is opened on the outer side of the connecting block. The connecting block, the formwork body 1 and the frame 2 are all made of the same material and are integrally formed. The connecting block can further improve the stability of the formwork. The opening direction of the demolding hole 4 is consistent with the opening direction of the formwork body 1. After pouring is completed, the crowbar is stuck under the concrete rib and inserted into the demolding hole 4 to pry downward. At the same time, the formwork slowly falls off.

[0023] Furthermore, the thickness of the frame 2 is less than or equal to 3 cm, which can reduce the thickness while meeting the construction strength requirements.

[0024] Furthermore, the width of the frame 2 is less than or equal to 1 cm, so as to avoid the problem of conflict between the main beam and the column cap and the formwork.

[0025] Furthermore, the outer side surface of the mold shell body 1 is smooth, which facilitates the subsequent demoulding work.

[0026] The CFRT mold shell has high strength and has the advantages of being light, high-strength and corrosion-resistant. It can effectively reduce the thickness and width of the mold shell edge. Steel nails are used to directly pass through the fixing holes to fix the mold shell to the lower wooden formwork, eliminating the joint filling process and saving board materials. The smaller edge size will not cause problems such as conflicts between the mold shell and the column cap. At the same time, it also reduces the construction difficulty and improves the construction efficiency. The demolding efficiency can be improved through the demolding holes.

[0027] The above description is only a preferred feasible embodiment of the present utility model, and does not limit the scope of rights of the present utility model. All equivalent changes made using the contents of the present utility model specification and its drawings are included in the scope of rights of the present utility model.

Claims

1. A CFRT turnover type cast-in-place dense rib floor formwork, characterized in that: It comprises a mold shell body made of CFRT, a frame extending outward from an opening at the bottom of the mold shell body, fixing holes arranged at intervals on the frame, and demoulding holes arranged at intervals at the junction of the mold shell body and the bottom of the frame.

2. The CFRT turnover type cast-in-place dense rib floor formwork according to claim 1 is characterized in that: The inner side surface of the mold shell body is provided with reinforcing ribs which are alternately arranged horizontally and vertically.

3. The CFRT turnover type cast-in-place dense rib floor formwork according to claim 1 is characterized in that: A connection block is arranged between two adjacent reinforcing ribs and near the junction of the mold shell body and the frame. The mold removal hole is a long hole and is arranged on the outer side of the connection block.

4. The CFRT turnover type cast-in-place dense rib floor formwork according to claim 1 is characterized in that: The frame thickness is less than or equal to 3cm.

5. The CFRT turnover type cast-in-place dense rib floor formwork according to claim 1, characterized in that: The border width is less than or equal to 1cm.

6. The CFRT turnover type cast-in-place dense rib floor formwork according to claim 1, characterized in that: The outer side surface of the mold shell body is smooth.

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