CN110843095A - Concrete box mould, manufacturing method thereof and mould-dismantling-free building method - Google Patents

Abstract

The invention discloses a concrete box formwork, a manufacturing method thereof, and a formwork-free construction method. The concrete box formwork includes a transverse member and a vertical member. The transverse member includes a bottom plate, a beam form and a superimposed roof. The components include a wall formwork, a partition wall and a structural column, the wall formwork, the partition wall and the structural column are respectively located above the bottom plate and are vertically connected to the bottom plate, and the wall formwork and the partition wall pass through the bottom plate. The structural column is connected, the beam form is located above the partition wall and the structural column, the lower end surface of the beam form is vertically connected to the partition wall or the structural column, and the upper end surface of the beam form is connected to the structural column. The upper end surfaces of the wall formwork are on the same horizontal plane, and the superimposed top plates are respectively vertically connected to the top of the beam formwork and the wall formwork. The various components of the box mold can be prefabricated and then transported to the designated station for assembly. The production speed is fast, the quality is high, and the energy saving and emission reduction are green and environmentally friendly.

Description

Concrete box form and its manufacturing method, and formwork-free construction method

technical field

The invention relates to the field of prefabricated buildings, in particular to a concrete box form and a method for making the same, and a method for constructing a formwork-free construction.

Background technique

For traditional cast-in-place concrete structure buildings, it is necessary to load and unload formwork during on-site construction, which consumes a lot of manpower and material resources, and increases the construction period.

Now the concrete structure buildings are gradually moving towards assembly. Some components such as simple prefabricated composite beams, composite slabs and prefabricated columns have been developed into prefabricated concrete box buildings, which has significantly improved the factory prefabrication rate and construction of concrete structures. speed, but there are also many problems with concrete box construction. At present, the common concrete box buildings are mostly tetrahedron or pentahedron, not hexahedron, which leads to low integration of decoration; in addition, the walls and roof and floor of concrete boxes are mostly of conventional thickness, which makes the box heavier and inconvenient for hoisting. And the connection between the boxes is mostly post-grouting or steel node connection, and the connection node is complicated, which is not conducive to construction.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the deficiencies of the prior art, and to provide a concrete box form and its manufacturing method, as well as a formwork-free construction method.

In order to achieve the above object, the present invention adopts the following technical scheme: a concrete box form, including a transverse member and a vertical member, the transverse member includes a bottom plate, a beam form and a superimposed top plate, and the vertical member includes a wall form, a partition A wall and a structural column, the wall form, the partition wall and the structural column are respectively located above the bottom plate and are vertically connected to the bottom plate, the wall form and the partition wall are connected through the structural column, so The beam form is located above the partition wall and the structural column, the lower end face of the beam form is vertically connected to the partition wall or the structural column, and the upper end face of the beam form is connected to the upper end face of the wall form. On the same horizontal plane, the superimposed top plates are respectively vertically connected to the tops of the beam formwork and the wall formwork.

Its further technical scheme is: the wall formwork is a reinforced concrete slab, a fiber reinforced concrete slab or a reinforced truss slab; L-shaped or U-shaped.

A further technical solution thereof is: the upper end surface of the transverse member and/or the vertical member is provided with pre-embedded hooks, nails or rings, and the wall formwork is also provided with a pulling member or a supporting member.

Its further technical scheme is: the wall formwork and the side of the partition wall are provided with embedded connectors, and the embedded connectors of the wall formwork and the side of the partition wall are used for connecting with the structural column. of steel.

Its further technical scheme is as follows: above the structural column, above the partition wall and below the beam form, there are pre-embedded steel plates, and the pre-embedded steel plates below the beam form are respectively connected with the pre-embedded steel plates above the partition wall. and the pre-embedded steel plates above the structural columns are connected and fixed by welding or studs.

Its further technical scheme is as follows: the superimposed roof is a steel truss superimposed roof or a prestressed superimposed roof, and pre-embedded steel plates are arranged under the superimposed roof, above the wall form and above the beam form, so The pre-embedded steel plate below the superimposed top plate is respectively connected and fixed with the pre-embedded steel plate above the wall form and the pre-embedded steel plate above the beam form by welding or studs.

Its further technical scheme is as follows: the base plate is pre-installed with structural column overlapping steel bars, the partition wall is provided with steel bars extending into the base plate, the wall formwork is provided with steel bars extending into the base plate, and the wall is provided with steel bars extending into the base plate. The mould and the partition wall are respectively anchored into the corresponding areas of the base plate pouring.

A method for making a concrete box mold, based on the concrete box mold described in any one of the above, comprising the following steps:

Prefabricated wall formwork, beam formwork, partition wall and laminated roof and pre-embed steel plates or steel bars in corresponding positions;

Pre-fix the wall formwork and partition wall at the position where the bottom plate is poured;

Pouring the bottom plate so that the wall formwork and the pre-embedded steel bars at the lower end of the partition wall extend into the bottom plate, and at the same time reserve the steel bars that overlap with the structural columns;

Pouring the structural column, pouring the structural column at the place where the structural column reserved on the bottom plate overlaps the steel bar, and at the same time, the steel bar at the end connecting the partition wall and the wall formwork with the structural column extends into the structural column;

Connect beam formwork to partition walls or structural columns;

Connect the box formwork superimposed top plate with the wall formwork and beam formwork.

Its further technical scheme is as follows: the beam form is welded or bolted to the pre-embedded steel plate below the beam form and the pre-embedded steel plate above the partition wall or the structural column.

Its further technical scheme is: the superimposed top plate is fixed by welding or stud connection with the pre-embedded steel plate at the lower end of the superimposed top plate and the pre-embedded steel plate above the wall form and the beam form.

A formwork-free construction method, based on the concrete box form described in any one of the above, comprising the following steps:

The prefabricated box formwork is vertically reinforced and supported with a detachable steel frame to the large-span superimposed top plate and beam formwork;

Assemble the prefabricated box molds to the designated area layer by layer according to the building structure layout plan;

Lay shear wall steel bars between wall forms of horizontally adjacent concrete box forms, lay beam steel bars between beam forms, and lay post-casting slab steel bars above the superimposed roof;

Pouring shear walls between wall forms of horizontally adjacent concrete box forms;

Pouring load-bearing beams between beam forms of horizontally adjacent concrete box forms;

Pour the slab after pouring.

The further technical solution is: when the shear wall is poured, the adjacent wall formwork is fixed by a tension member or a support member.

Its further technical scheme is: the post-cast slab is effectively connected to the superimposed roof through the truss bars above the superimposed roof to form a normal floor slab.

The beneficial effects of the present invention compared with the prior art are: the concrete box formwork and its manufacturing method provided by the present invention, as well as the construction method without dismantling the formwork, the concrete box formwork is respectively located above the bottom plate through the wall form, the partition wall and the structural column and is connected with the The bottom plate is connected vertically, the wall formwork and the partition wall are connected through the structural column, the beam formwork is located above the partition wall and the structural column, the lower end face of the beam formwork is vertically connected with the partition wall or structural column, and the upper end face of the beam formwork is connected to the upper end face of the wall formwork. The end faces are on the same horizontal plane, and the superimposed top plates are vertically connected to the top of the beam formwork and wall formwork respectively to realize industrialized assembly line production. The components of the box formwork can be prefabricated and transported to the designated station for assembly. The production speed is fast, the quality is high, and the Energy saving and emission reduction are green and environmentally friendly. The box mold can be integrated with interior decoration, water and electricity pipelines and other integrated factory construction, which can greatly shorten the construction and decoration period. Multiple concrete box molds can be connected to each other, and the box molds can be assembled to the designated area layer by layer according to the building structure layout. During the construction period, the load-bearing components of the building are still constructed by cast-in-place construction, and the connection nodes of load-bearing members are equivalent to cast-in-place, which is simple, safe and reliable.

The above description is only an overview of the technical solution of the present invention. In order to understand the technical means of the present invention more clearly, it can be implemented in accordance with the content of the description, and in order to make the above and other purposes, features and advantages of the present invention more obvious and understandable, the following A preferred embodiment is given, and the detailed description is as follows.

Description of drawings

Figure 1 is a schematic structural diagram of a concrete box form.

Fig. 2 is the flow chart of the concrete box form making method;

Fig. 3 is the flow chart of the construction method without demoulding;

FIG. 4 is a schematic structural diagram of assembling a plurality of box molds according to a specific embodiment.

reference number

10. Box mould; 11. Bottom plate; 12. Wall mould; 13. Partition wall; 14. Structural column; 15. Beam mould;

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 accompanying drawings and specific embodiments.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " Rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. The relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore It should not be construed as a limitation of the present invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

In the present invention, unless otherwise expressly specified and limited, the terms "installation", "connection", "connection", "fixing" and other terms should be understood in a broad sense, for example, it may be a connection or a detachable connection, It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication between the two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the present invention, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may include the first and second features in direct contact, or may include the first and second features Not directly but through additional features between them. Also, the first feature being "above", "over" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature is "below", "below" and "below" the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.

In the description of this specification, description with reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples", etc., mean specific features described in connection with the embodiment or example , structure, material or feature is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms should not be construed as necessarily referring to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

As shown in FIG. 1, a concrete box form 10 includes transverse members and vertical members, the transverse members include a bottom plate 11, a beam form 15 and a superimposed top plate 16, and the vertical members include a wall form 12, a partition wall 13 and a structural column. 14, the wall form 12, the partition wall 13 and the structural column 14 are respectively located above the bottom plate 11 and are vertically connected with the bottom plate 11, the wall form 12 and the partition wall 13 are connected by the structural column 14, and the beam form 15 is located between the partition wall 13 and the structural column 14. Above, the lower end face of the beam formwork 15 is vertically connected with the partition wall 13 or the structural column 14, the upper end face of the beam formwork 15 and the upper end face of the wall formwork 12 are on the same horizontal plane, and the superimposed top plate 16 is vertically connected to the beam formwork 15 and the wall formwork 12 respectively. the top of. Multiple concrete box molds 10 can be connected to each other, and the box molds 10 can be assembled to a designated area layer by layer according to the building structure layout. Station assembly, fast production speed, high quality, and energy saving, emission reduction and green environmental protection. In addition, the box mold 10 can be integrated with indoor decoration, water and electricity pipelines and other integrated factory construction, which can greatly shorten the construction period of building decoration.

Specifically, the wall formwork 12 is a reinforced concrete slab, a fiber reinforced concrete slab or a reinforced truss slab, and the cross-sectional shape of the wall formwork 12 is a straight line, an L shape, a Z shape or a U shape.

Specifically, the thickness of the wall form 12 is less than or equal to 100 mm.

Specifically, the beam form 15 is made of reinforced concrete, and the cross-sectional shape of the beam form 15 is L-shape or U-shape.

Specifically, the thickness of the beam form 15 is less than or equal to 100 mm.

Specifically, the upper end surfaces of the transverse members and/or the vertical members are provided with pre-embedded hooks, nails or rings, and the wall formwork 12 is also provided with pulling members or support members. The adjacent wall formwork 12 is fixed by means of tension members or supports.

Specifically, the wall formwork 12 and the side walls of the partition wall 13 are provided with embedded connectors, and the embedded connectors on the sides of the wall formwork 12 and the partition wall 13 are steel bars for connecting with the structural columns 14 .

Specifically, pre-embedded steel plates are provided above the structural column 14 , above the partition wall 13 and below the beam form 15 . The buried steel plate is fixed by welding or stud connection. Connection by welding or studs is simple, fast and secure.

Specifically, the superimposed top plate 16 is a steel truss superimposed top plate 16 or a prestressed superimposed top plate 16 . Pre-embedded steel plates are provided below the superimposed top plate 16 , above the wall formwork 12 and above the beam formwork 15 . The pre-embedded steel plates are respectively connected and fixed with the pre-embedded steel plates above the wall form 12 and the pre-embedded steel plates above the beam form 15 by welding or studs. Connection by welding or studs is simple, fast and secure.

Specifically, the bottom plate 11 is pre-installed with structural columns 14 lapped steel bars, the partition wall 13 is provided with steel bars extending into the bottom plate 11, the wall formwork 12 is provided with steel bars extending into the bottom plate 11, and the wall formwork 12 and the partition wall 13 are respectively anchored into The corresponding area of the bottom plate 11 poured. The box formwork 10 only provides the formwork for concrete pouring of the building load-bearing structure, and the building load-bearing components still adopt the method of cast-in-place construction.

As shown in FIG. 2 , a method for making a concrete box form, based on the concrete box form 10 shown in FIG. 1 , includes the following steps:

S11, prefabricated wall formwork 12, beam formwork 15, partition wall 13 and superimposed top plate 16 and pre-embed steel plates or steel bars in corresponding positions;

S12, pre-fixing the wall formwork 12 and the partition wall 13 at the pouring position of the bottom plate 11;

S13, pouring the bottom plate 11, so that the pre-embedded steel bars at the lower ends of the wall formwork 12 and the partition wall 13 are extended into the bottom plate 11, and at the same time, the steel bars that overlap with the structural columns 14 are reserved;

S14, pour the structural column 14, pour the structural column 14 at the reserved structural column 14 of the bottom plate 11 to overlap the steel bar, and simultaneously make the steel bar at one end of the partition wall 13 and the wall form 12 connected with the structural column 14 to extend into the structural column 14;

S15, connect the beam formwork 15 with the partition wall 13 or the structural column 14;

S16 , connecting the box mold 10 with the top plate 16 and the wall mold 12 and the beam mold 15 . The box mold 10 prepared by this manufacturing method has a hexahedral structure, and because of the self-contained load-bearing component template, the building can be promoted to realize the construction without demoulding, and the construction period of the building can be greatly shortened. And compared with the general conventional box building, the weight is lighter, the integrity is good, and the integration of interior decoration is high. The prepared box form 10 provides a concrete pouring formwork for the building load-bearing structure, the building load-bearing member still adopts the method of cast-in-place construction, and the connection node of the load-bearing member is equivalent to the cast-in-place construction, which is simple, safe and reliable. The manufactured box mold 10 can be integrated with interior decoration, water and electricity pipelines and other integrated factory construction, which can greatly shorten the construction period of decoration.

Specifically, the beam form 15 is fixed by welding or stud connection with the pre-embedded steel plate below the beam form 15 and the partition wall 13 or the pre-embedded steel plate above the structural column 14 .

Specifically, the laminated top plate 16 is fixed by welding or stud connection with the embedded steel plate at the lower end of the laminated top plate 16 and the embedded steel plate above the wall formwork 12 and the beam formwork 15.

As shown in Figure 3, a formwork-free construction method, based on the concrete box form shown in Figure 1, includes the following steps:

S21, the prefabricated box mold 10 is vertically reinforced and supported with a detachable steel frame to the larger-span superimposed top plate 16 and the beam mold 15;

S22, assembling the prefabricated box molds 10 to the designated area layer by layer according to the building structure layout drawing;

S23, laying shear wall steel bars between the wall forms 12 of the horizontally adjacent concrete box forms 10, laying the steel bars of the beams between the beam molds 15, and laying the steel bars of the back pouring slabs above the superimposed top plate 16;

S24, pouring a shear wall between the wall forms 12 of the horizontally adjacent concrete box forms 10;

S25, pouring load-bearing beams between the beam forms 15 of the horizontally adjacent concrete box forms 10;

S26, pouring the slab after pouring. Each component of the modules required for implementing this formwork-free construction method can be prefabricated and then transported to a designated station for assembly. The production speed is fast, the quality is high, and the energy saving and emission reduction are green and environmentally friendly. Each box mold 10 can be integrated with interior decoration, water and electricity pipelines and other integrated factory construction, which can greatly shorten the construction period of building decoration, and each box mold 10 has its own load-bearing component template, which can promote the construction of the building to achieve formwork-free construction and greatly shorten the construction period. During the construction period, the load-bearing components of the building are still constructed by cast-in-place construction, and the connection nodes of the load-bearing members are equivalent to cast-in-place, which is simple, safe and reliable.

Specifically, when the shear wall is poured, the adjacent wall forms 12 are fixed by means of tension members or support members.

Specifically, the post-cast slab is effectively connected to the laminated top plate 16 through the truss bars above the laminated top plate 16 to form a normal floor slab.

Specifically, as shown in FIG. 4 , when using the formwork-free construction method, the building is firstly split and prefabricated into a plurality of box-shaped modules, such as three boxforms 10 , according to the house type. The box-type module comprises formwork wall forms 12 for shear walls, formwork beam forms 15 for beams, superimposed top panels 16, bottom panels 11, partition walls 13 and structural columns 14 as previously described. When the building is constructed, the box-shaped modules are first hoisted to the designated position layer by layer according to the construction drawing for assembly. After the assembly is completed, the on-site pouring of the load-bearing member shear walls, beams, slabs, etc. is carried out. The on-site pouring parts are two-phase The wall mold gap 21 adjacent to the box mold 10 , the beam mold gap 22 between two adjacent box molds 10 , and the upper post-casting plate portion of the superimposed top plate 16 . Since the prefabrication of the box-shaped modules has been completed, the non-load-bearing components of the building have been installed as partition walls 13 and structural columns 14, so the installation of the non-load-bearing components of the building has been completed after the box-shaped modules are assembled; the shear walls, beams, and slabs of the bearing components can be directly The wall formwork 12, the beam formwork 15 and the superimposed top plate 16 that come with the box-type module are used as formwork for on-site pouring. There is no need to load and unload the formwork, and the construction can be basically realized without dismantling the formwork.

Compared with the prior art, the present invention provides a concrete box form, a method for making the same, and a formwork-free construction method. The concrete box form is located above the bottom plate and is vertically connected to the bottom plate through the wall form, the partition wall and the structural column. It is connected with the partition wall through the structural column, the beam mold is located above the partition wall and the structural column, the lower end surface of the beam mold is vertically connected with the partition wall or the structural column, and the upper end surface of the beam mold and the upper end surface of the wall mold are on the same horizontal plane. The closed top plate is vertically connected to the top of the beam formwork and the wall formwork respectively to realize industrialized production line production. The components of the box formwork can be prefabricated and then transported to the designated station for assembly. The production speed is fast, the quality is high, and the energy saving and emission reduction are green and environmentally friendly. The box mold can be integrated into the interior decoration, water and electricity pipelines and other integrated factory construction, which can greatly shorten the construction period of the building decoration. Multiple concrete box molds can be connected to each other, and the box molds can be assembled to the designated area layer by layer according to the building structure layout. During the construction period, the load-bearing components of the building are still constructed by cast-in-place construction, and the connection nodes of load-bearing members are equivalent to cast-in-place, which is simple, safe and reliable.

The above only uses examples to further illustrate the technical content of the present invention, so that readers can understand it more easily, but it does not mean that the embodiments of the present invention are limited to this. Any technical extension or re-creation made according to the present invention is subject to the protection of. The protection scope of the present invention is subject to the claims.

Claims (13)

1. a concrete box form is characterized in that, comprises transverse member and vertical member, described transverse member comprises bottom plate, beam form and superimposed top plate, and described vertical member comprises wall form, partition wall and structural column, so The wall formwork, the partition wall and the structural column are respectively located above the bottom plate and are vertically connected to the bottom plate, the wall formwork and the partition wall are connected through the structural column, and the beam formwork is located on the bottom plate. Above the partition wall and the structural column, the lower end surface of the beam form is vertically connected to the partition wall or the structural column, and the upper end surface of the beam form and the upper end surface of the wall form are on the same horizontal plane. The superimposed top plates are respectively vertically connected to the tops of the beam formwork and the wall formwork. 2. The concrete box formwork according to claim 1, wherein the wall formwork is a reinforced concrete slab, a fiber reinforced concrete slab or a reinforced truss slab, and the cross-sectional shape of the wall formwork is a straight line, an L shape, a Z shape Or U-shaped, the cross-sectional shape of the beam form is L-shaped or U-shaped. 3. The concrete box formwork according to claim 1, wherein the upper end face of the transverse member and/or the vertical member is provided with pre-embedded hooks, nails or rings, and the wall formwork is also provided with There are pulls or supports. 4. The concrete box formwork according to claim 1, wherein the wall formwork and the side of the partition wall are provided with embedded connectors, the wall formwork and the side of the partition wall are embedded The connector is a steel bar for connecting with the construction column. 5 . The concrete box form according to claim 1 , wherein pre-embedded steel plates are provided above the structural columns, above the partition walls, and below the beam form, and the pre-embedded steel plate below the beam form is 5 . They are respectively connected and fixed with the pre-embedded steel plate above the partition wall and the pre-embedded steel plate above the structural column by welding or studs. 6 . The concrete box form according to claim 1 , wherein the superimposed top plate is a steel truss superimposed top plate or a prestressed superimposed top plate, below the superimposed top plate, above the wall form and the There are pre-embedded steel plates above the beam formwork, and the pre-embedded steel plates below the superimposed top plate are respectively connected and fixed with the pre-embedded steel plates above the wall formwork and the pre-embedded steel plates above the beam form by welding or studs. 7 . The concrete box form according to claim 1 , wherein the bottom plate is pre-installed with structural column overlapping steel bars, the partition walls are provided with steel bars extending into the bottom plate, and the wall formwork is provided with reinforced bars extending into the bottom plate. For the reinforcing bars extending into the bottom plate, the wall formwork and the partition wall are respectively anchored into the corresponding areas of the bottom plate pouring. 8. A method for making a concrete box mould, based on the concrete box mould described in any one of claims 1-7, characterized in that, comprising the following steps: Prefabricated wall formwork, beam formwork, partition wall and laminated roof, and pre-embed steel plates or steel bars in corresponding positions; Pre-fix the wall formwork and partition wall at the position where the bottom plate is poured; Pouring the bottom plate so that the wall formwork and the pre-embedded steel bars at the lower end of the partition wall extend into the bottom plate, and at the same time reserve the steel bars that overlap with the structural columns; Pouring the structural column, pouring the structural column at the place where the structural column reserved on the bottom plate overlaps the steel bar, and at the same time, the steel bar at the end connecting the partition wall and the wall formwork with the structural column extends into the structural column; Connect beam formwork to partition walls or structural columns; Connect the box formwork superimposed top plate with the wall formwork and beam formwork. 9 . The method for making a concrete box form according to claim 8 , wherein the beam form is fixed by welding or stud connection with the pre-embedded steel plate below the beam form and the pre-embedded steel plate above the partition wall or the structural column. 10 . 10 . The method for making a concrete box form according to claim 8 , wherein the superimposed top plate is fixed by welding or stud connection with the pre-embedded steel plate at the lower end of the superimposed top plate and the pre-embedded steel plate above the wall form and the beam form. 11 . 11. A formwork-free construction method, based on the concrete box formwork described in any one of claims 1-7, characterized in that, comprising the following steps: The prefabricated box formwork is vertically reinforced and supported with a detachable steel frame to the large-span superimposed top plate and beam formwork; Assemble the prefabricated box molds to the designated area layer by layer according to the building structure layout plan; Lay shear wall steel bars between wall forms of horizontally adjacent concrete box forms, lay beam steel bars between beam forms, and lay post-casting slab steel bars above the superimposed roof; Pouring shear walls between wall forms of horizontally adjacent concrete box forms; Pouring load-bearing beams between beam forms of horizontally adjacent concrete box forms; Pour the slab after pouring. 12. A formwork-free construction method according to claim 11, characterized in that, when the shear wall is poured, adjacent wall forms are fixed by tension members or support members. 13. A formwork-free construction method according to claim 11, wherein the post-cast slab is effectively connected to the superimposed roof through the truss bars above the superimposed roof to form a normal floor slab.

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