CN111851830A - Assembled disassembly-free formwork and method of making the same - Google Patents

Abstract

The invention discloses an assembled prefabricated dismantling-free formwork, which is characterized in that: a prefabricated integral formwork and a dismantling-free formwork, wherein the prefabricated integral formwork comprises a transverse steel member and a longitudinal steel member, the transverse steel member and the longitudinal The steel components are welded into a frame; the lower surface of the welded prefabricated integral formwork is the reference plane; a dismantling-free formwork is laid on the base surface side of the prefabricated integral formwork; the dismantling-free formwork is fixedly connected to the prefabricated integral formwork through fasteners . The invention also discloses a manufacturing method of a dismantling-free formwork system. The invention has the advantages of simple structure, convenient processing, improved construction efficiency, good rigidity, and easy processing.

Description

Assembled disassembly-free formwork and method of making the same

technical field

The invention belongs to the technical field of construction engineering, and in particular relates to an assembled dismantling-free formwork and a manufacturing method thereof.

Background technique

At present, there are two main types of floor slabs in buildings, one is prefabricated slabs and the other is cast-in-place concrete slabs. The prefabricated floor slab is installed by prefabricating on the ground and hoisting on site. The advantages are that the construction progress is accelerated and the cost is low. However, there is a lack of effective connection between the existing prefabricated slab floor and the wall, and in the event of natural disasters such as earthquakes, it is easy to loosen and fall off, resulting in property losses and even casualties. In addition, after the existing prefabricated floor slabs are assembled, there is a certain gap between the floor slabs. Improper handling will cause cracks in the ceiling, which not only affects the appearance, but also sometimes causes water leakage and other phenomena.

The cast-in-place concrete floor overcomes some defects of the prefabricated floor, which can greatly improve the seismic capacity of the building. However, the construction of cast-in-place concrete floor requires a series of operations such as erecting a support frame on site, laying a formwork on the support frame, laying steel bars in the formwork, and then pouring concrete. In the traditional floor construction project, wood formwork is used, and wood formwork is used for floor construction, which has the defects of waste of resources, large loss of formwork removal, large number of floor support appliances, and high construction cost. In order to overcome the defects of wood formwork for floor construction, cast-in-place precast concrete composite panels have appeared, but the existing cast-in-situ precast concrete composite panels have heavy weight, slow factory processing, complicated transportation and hoisting construction, and high load-bearing requirements for floor support tools.

In addition, the reinforced truss floor slab that constitutes the cast-in-place concrete composite slab uses reinforced truss and galvanized bottom formwork as the main components, and then the reinforced truss and galvanized bottom formwork are connected together by resistance spot welding or connectors to form welding. Type or prefabricated reinforced truss floor deck. Reinforced truss and galvanized bottom formwork During the construction of prefabricated residential buildings, the problems of welded reinforced truss floor deck: a) It is difficult to remove the galvanized bottom formwork from the bottom of the floor; b) There is corrosion on the feet of the reinforced truss, which affects the roof. Renovation; c) When the galvanized formwork is removed, the feet of the steel truss will sag and deform, which will affect the decoration of the bottom of the floor; d) The labor intensity is high and the labor cost is high; During the construction process, the prefabricated steel truss floor deck has the following problems: a) the use of thicker galvanized steel formwork, the material cost is greatly increased; b) the connecting piece connecting the steel truss and the bottom formwork, the use efficiency is low ; c) The repeated use of galvanized formwork and joints is low; d) There are problems of more labor, high labor cost and high labor intensity.

To this end, the present invention provides a support-free or simply-supported assembly-free dismantling formwork, which is simple in structure, easy to process, and improves construction efficiency, and a manufacturing method thereof.

SUMMARY OF THE INVENTION

Aiming at the problems existing in the prior art, the present invention provides a support-free or simply-supported assembly-free dismantling formwork, which is simple in structure, easy to process, and improves construction efficiency, and a manufacturing method thereof.

The present invention is realized in this way, a prefabricated prefabricated formwork without dismantling, which is characterized in that: a prefabricated integral formwork and a disassembly-free formwork, wherein the prefabricated integral formwork comprises a transverse steel member and a longitudinal steel member, and the transverse steel The component and the longitudinal steel component are welded into a frame; the lower surface of the welded prefabricated integral formwork is the reference plane; a dismantling-free formwork is laid on the base surface side of the prefabricated integral formwork; the dismantling-free formwork is connected to the prefabricated integral formwork through fasteners. Frame fixed.

Preferably, in the above technical solution, the prefabricated integral formwork further includes an intermediate steel member, and both ends of the intermediate steel member are connected by welding with the transverse steel member or the longitudinal steel member on the corresponding side.

Preferably, the transverse steel member and/or the longitudinal steel member includes at least a lower support portion, and the lower surface of the lower support portion is a horizontal reference plane and an upper support portion for supporting the steel truss; connecting the lower support portion. Uprights for the support and upper support.

Preferably, in the above technical solution, the height of the upper surface of the upper support portion from the lower reference plane is not less than 15 mm.

In the above technical solution, preferably, the cross-sectional shapes of the transverse steel members and the longitudinal steel members are C-shaped, I-shaped, L-shaped, T-shaped, rectangular or glyph-shaped.

Preferably, in the above technical solution, the vertical plates of the transverse steel member and the vertical steel member are provided with slurry holes.

In the above technical solution, preferably, both ends of the reinforced steel truss exceed the dismantling-free template, so that the ends of the reinforced steel truss are overlapped in the structural beam.

In the above technical solution, preferably, the connection side between the dismantling-free template and the prefabricated integral frame is provided with grooves or irregular protrusions are processed by brushing.

Preferably, in the above technical solution, steel mesh is pre-embedded in the dismantling-free formwork.

A method for making an assembled disassembly-free formwork is characterized in that: it mainly comprises the following steps:

S1. Prefabricated frame: Make transverse steel members and longitudinal steel members and/or intermediate steel members according to the floor plan; Lay the transverse steel members and longitudinal steel members and/or intermediate steel members on the upper reference plane of the welding platform of the welding equipment , and spliced into a frame, and then start the welding equipment for welding to form a prefabricated overall mold base;

S2. Lay the dismantling-free formwork; turn the above-mentioned prefabricated integral formwork with steel truss over 90 degrees or 180 degrees, so that the reference plane of the prefabricated integral formwork faces the operator, and then lay the prefabricated size-free dismantling formwork on the prefabricated integral formwork. On the datum plane of the overall formwork, the dismantling-free formwork is then fixed to the transverse steel members, longitudinal steel members and/or intermediate steel members of the formwork by self-tapping;

S3. Numbering and numbering; numbering is performed according to the floor plate of the floor plan, and after the numbering, the numbering is performed according to the numbering.

The advantages and positive effects of the present invention are as follows: the present invention can be prefabricated and installed on site; compared with traditional wooden formwork, it reduces formwork construction, and has the same life span as the floor slab; The rigidity of the plywood is high, the integrity is good, the supporting tools are simple, or it is free of support; compared with the concrete prefabricated laminated board, this kind of non-demolition floor bearing plate has a light weight and high cast-in-place construction quality. Compared with the existing cast-in-situ precast concrete composite panels, it has the advantages of light weight, factory processing speed, easy transportation and hoisting, low load-bearing requirements for floor support tools, and high cast-in-place construction quality.

Description of drawings

Fig. 1 is the structural representation of the present invention;

Fig. 2 is the rear view of Fig. 1;

Fig. 3 is K-direction view in Fig. 1;

Fig. 4 is the three-dimensional structure schematic diagram of Fig. 1;

Fig. 5 is the structural schematic diagram of prefabricated integral formwork;

Fig. 6 is the structure schematic diagram of dismantling-free formwork;

Figure 7 is a schematic diagram of a truss floor structure;

Figure 8 is a schematic diagram of the partial structure of the dismantling-free formwork with steel mesh;

Figure 9 is a transverse or longitudinal steel member with grout holes.

In the figure, 1, prefabricated integral formwork; 1-1, transverse steel member; 1-10, lower support part; 1-11, horizontal reference plane; 1-12, upper support part; 1-13, slurry hole; 1-2, longitudinal steel member; 1-3, datum plane; 1-4, intermediate steel member; 2, free formwork; 2-1, groove; 2-2, steel mesh; 3, fastener; 4 , Reinforced steel truss.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

Please refer to Figures 1 to 6, a prefabricated formwork without disassembly, including a prefabricated integral formwork 1 and a formwork 2 compatible with concrete; the formwork here is a non-metallic concrete compatible plate with a certain bearing capacity, such as Cement fiber board, calcium silicate board; the prefabricated integral formwork includes transverse steel member 1-1 and longitudinal steel member 1-2, and the transverse steel member and longitudinal steel member are welded into a frame; the welded prefabricated integral formwork The lower surface is the reference plane 1-3; lay the dismantling-free formwork 2 on the reference plane side of the prefabricated integral formwork; the dismantling-free formwork is fixed to the prefabricated integral formwork through fasteners 3, and the fasteners here preferably have a certain amount. Cutting force and self-tapping screws with a certain self-locking function ensure the stability and firmness of the connection-free formwork and the prefabricated overall frame; The prefabricated integral formwork improves the overall flexural and compressive resistance of the dismantling-free formwork, and improves the safety. After the pouring is completed, the concrete solidifies and is compatible with the dismantling-free formwork to form an integrated structure. The prefabricated automatic screws are equivalent to pre-buried in the concrete. Then, the dismantling-free template and the structure form a structure with the same life span.

In actual use, it is used for building floor slabs, and a reinforced steel frame 4 is welded on the upper surface of the prefabricated formwork-free formwork to make a formwork-free truss floor slab. Please refer to FIG. 7. The present invention can be prefabricated and installed on site; compared with traditional wooden formwork , reducing the construction of demoulding, and has the same life as the floor slab; compared with the traditional floor formwork support, this kind of non-demolition floor composite board has high rigidity, good integrity, simple supporting tools, or no support; compared with concrete prefabricated stacking Plywood, this kind of non-demolition floor deck has light weight and high quality cast-in-place construction. Compared with the existing cast-in-situ precast concrete composite panels, it has the advantages of light weight, factory processing speed, easy transportation and hoisting, low load-bearing requirements for floor support tools, and high cast-in-place construction quality.

Preferably, in the above technical solution, the prefabricated integral formwork further includes intermediate steel members 1-4, and both ends of the intermediate steel members are connected by welding with the transverse or longitudinal steel members on the corresponding side. For the prefabricated integral formwork with larger size, the intermediate steel member improves the strength of the integral formwork, disperses the force evenly, and ensures the safety and reliability of the formwork system.

Preferably in the above technical solution, the transverse steel member and/or the longitudinal steel member include at least lower support portions 1-10, and the lower surface of the lower support portion is a horizontal reference plane, which ensures that the transverse steel member and/or the lower support portion is a horizontal reference plane. Or longitudinal steel members are also a horizontal datum plane after splicing into a frame, which ensures the flatness after splicing without dismantling the formwork, and lays a foundation for later painting and leveling; an upper support part 1-11 used to support the steel truss, the upper support part is used as The foundation of the reinforced truss support ensures the stability of the reinforced truss support; the vertical plates 1-12 connecting the lower support part and the upper support part, the vertical plates mainly play the role of force support, and the vertical plates have a certain height; The height of the upper surface of the upper support part from the lower reference plane is not less than 15mm. The design of this distance ensures that a concrete protective layer is formed after the concrete is poured, so that the steel trusses of the main bearing members are not exposed, and the life of the structure is improved.

Preferably, the cross-sectional shape of the transverse steel member and the longitudinal steel member is C-shaped, I-shaped, L-shaped, T-shaped, rectangular or a few-shaped, the preferred C-shaped structure in this embodiment, and the two C-shaped channel steel. Each web is provided with a bend inward, and after the C-shaped groove is poured, the densely filled concrete is solidified to form a firm connection structure with the concrete structure, so as to improve the installation strength of the prefabricated integral formwork 1 .

Preferably in the above technical solution, the vertical plates of the transverse steel member and the vertical steel member are provided with slurry holes 1-13, please refer to FIG. 9, the design purpose of the slurry holes is to facilitate the communication of concrete on both sides of the vertical plate, It is conducive to the dense filling of concrete, and at the same time, steel bars can be transversely penetrated in the slurry hole to improve the structural strength; in addition, the weight can be reduced without affecting the support strength.

Preferably, the connection side of the dismantling-free template 2 and the prefabricated overall frame is provided with grooves 2-1 or irregular protrusions are processed by brushing; the grooves are conducive to the passage of slurry and ensure dense filling; It can be used to fit with concrete.

Preferably, in the above technical solution, steel meshes 2-2 are pre-embedded in the dismantling-free formwork, so as to improve the mechanical performance of the dismantling-free formwork, please refer to FIG. 8 .

The invention also discloses a manufacturing method of an assembled dismantling-free formwork, which mainly comprises the following steps:

S1. Prefabricated frame: Make transverse steel members and longitudinal steel members and/or intermediate steel members according to the floor plan; Lay the transverse steel members and longitudinal steel members and/or intermediate steel members on the upper reference plane of the welding platform of the welding equipment , and spliced into a frame, and then start the welding equipment for welding to form a prefabricated overall mold base;

S2. Lay the dismantling-free formwork; turn the above-mentioned prefabricated integral formwork with steel truss over 90 degrees or 180 degrees, so that the reference plane of the prefabricated integral formwork faces the operator, and then lay the prefabricated size-free dismantling formwork on the prefabricated integral formwork. On the datum plane 1-13 of the overall formwork, then fix the free formwork with the transverse steel members and longitudinal steel members and/or intermediate steel members of the formwork by self-tapping;

S3. Numbering and numbering; numbering is performed according to the floor plate of the floor plan, and after the numbering, the numbering is performed according to the numbering.

The above manufacturing method has high production efficiency, is convenient for assembling in the later stage, and at the same time ensures the flatness after splicing, and reduces the later construction cost and labor intensity.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the protection of the present invention. within the range.

Claims (9)

1. The utility model provides a prefabricated formwork of exempting from to tear open of assembled which characterized in that: the prefabricated integral formwork comprises a transverse steel member and a longitudinal steel member, and the transverse steel member and the longitudinal steel member are welded into a frame; the lower surface of the welded prefabricated integral die carrier is a datum plane; laying a non-dismantling template on the reference surface side of the prefabricated integral formwork; the non-dismantling formwork is fixedly connected with the prefabricated integral formwork through a fastener.

2. The fabricated disassembly-free form of claim 1, wherein: the prefabricated integral formwork further comprises an intermediate steel member, and two ends of the intermediate steel member are connected with the transverse steel member or the longitudinal steel member on the corresponding side in a welded mode.

3. The fabricated disassembly-free form of claim 1, wherein: the transverse steel member and/or the longitudinal steel member at least comprise a lower supporting part, the lower surface of the lower supporting part is a horizontal reference surface, and the upper supporting part is used for supporting the steel bar truss; a vertical plate connecting the lower support part and the upper support part.

4. The fabricated disassembly-free form of claim 3, wherein: the height of the upper surface of the upper supporting part from the lower reference surface is not less than 15 mm.

5. The fabricated disassembly-free form of claim 1, wherein: the cross sections of the transverse steel members and the longitudinal steel members are C-shaped, I-shaped, L-shaped, T-shaped, rectangular or n-shaped.

6. The fabricated disassembly-free form of claim 1, wherein: and slurry passing holes are formed in the vertical plates of the transverse steel member and the longitudinal steel member.

7. The fabricated disassembly-free form of claim 1, wherein: the connecting side of the non-dismantling formwork and the prefabricated integral framework is provided with a groove or is provided with an irregular bulge by adopting napping treatment.

8. The fabricated disassembly-free form of claim 1, wherein: and a steel mesh is pre-embedded in the non-dismantling formwork.

9. The manufacturing method of the disassembly-free template of the assembled prefabricated steel bar truss is characterized by comprising the following steps of: the method mainly comprises the following steps:

s1, prefabricating into a frame: manufacturing transverse steel members and longitudinal steel members and/or middle steel members according to the house type diagram; paving the transverse steel members and the longitudinal steel members and/or the middle steel members on the upper reference surface of a welding platform of welding equipment, splicing the transverse steel members and the longitudinal steel members into a frame, and then starting the welding equipment for welding to form a prefabricated integral die carrier;

S2, laying a non-dismantling template; turning the prefabricated integral formwork with the steel bar trusses by 90 degrees or 180 degrees to enable a reference plane of the prefabricated integral formwork to face an operator, then flatly laying a prefabricated size disassembly-free formwork on the reference plane of the prefabricated integral formwork, and then fixedly connecting the disassembly-free formwork with a transverse steel member and a longitudinal steel member and/or an intermediate steel member of the formwork through self-tapping;

s3, numbering; and numbering the floor plates according to the house type drawing, and then stacking the floor plates according to the numbers.

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