CN113696304A

CN113696304A - Production method of cavity wall

Info

Publication number: CN113696304A
Application number: CN202111259808.8A
Authority: CN
Inventors: 余金宝; 林遥; 冯迪
Original assignee: Sany Construction Technology Co Ltd
Current assignee: Sany Construction Technology Co Ltd
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2021-11-26
Anticipated expiration: 2041-10-28
Also published as: CN113696304B

Abstract

The invention provides a production method of a cavity wall, which comprises the following steps: prefabricating the whole steel reinforcement framework of the cavity wall, wherein the steel reinforcement framework comprises upper-layer steel reinforcements, lower-layer steel reinforcements and partition nets positioned between the upper-layer steel reinforcements and the lower-layer steel reinforcements; preparing a mould table, and erecting a lower layer side mould on the mould table; a steel bar framework is arranged in a space surrounded by the die table and the lower layer side die; erecting an upper layer side formwork above the lower layer side formwork; pouring concrete to the lower-layer steel bars through the partition net in the vertical direction or the concrete conveying pipeline in the horizontal direction to form a first leaf plate; and pouring concrete to the separation net and the upper layer of steel bars to form a second leaf plate. The position of the steel reinforcement framework can be adjusted before concrete is poured by adopting the prefabricated steel reinforcement framework; arrange between upper reinforcing bar and the lower floor's reinforcing bar and separate the net, can follow vertical direction and pour concrete to lower floor's reinforcing bar through separating the net in order to form first page or leaf board, separate the net and not only can regard as the bottom of second page or leaf board, can also realize pouring exempting from the upset when first page or leaf board.

Description

Production method of cavity wall

Technical Field

The invention relates to the technical field of building components, in particular to a production method of a cavity wall.

Background

Because the fabricated building has the characteristics of green construction, environmental protection, high efficiency and the like, the fabricated building is vigorously developed in recent years. The state also goes out a plurality of policies such as 'guidance opinions about the vigorous development of the fabricated building' and strives to make the fabricated building occupy 30% of the area of the newly built building in 2025. Therefore, the development of the assembly type building is promoted comprehensively, and the development becomes a great importance in the building industry of each province and even the whole country. In an assembly type building, when a double-skin wall with a cavity is produced, a turnover machine is required to be adopted for production at present, so that the production efficiency of a prefabricated wall body is low, and the process is relatively complex.

Disclosure of Invention

The invention provides a production method of a cavity wall body, which is used for solving the problem that the production efficiency of a double-skin wall in the prior art is low.

The invention provides a production method of a cavity wall, which comprises the following steps:

prefabricating the whole steel bar framework of the cavity wall, wherein the steel bar framework comprises upper-layer steel bars, lower-layer steel bars and partition nets positioned between the upper-layer steel bars and the lower-layer steel bars;

preparing a mould table, and erecting a lower layer side mould on the mould table;

the steel bar framework is arranged in a space surrounded by the die table and the lower layer side die;

erecting an upper layer side formwork above the lower layer side formwork;

pouring concrete to the lower-layer steel bars through the partition net in the vertical direction or through a concrete conveying pipeline in the horizontal direction to form a first leaf plate;

and pouring concrete to the partition net and the upper layer of steel bars to form a second leaf plate.

According to the production method of the cavity wall provided by the invention, the whole steel reinforcement framework of the prefabricated cavity wall comprises the following steps:

a first opening is formed in the partition net;

under the circumstances that along the vertical direction through separate the net concreting to the lower floor's reinforcing bar is in order to form first page board, concreting to separate net, upper reinforcing bar is in order to form the second page board, include:

vertically casting the first sheet through the first opening;

after the first page plate is poured, closing the first opening;

and pouring the second page plate.

According to the production method of the cavity wall provided by the invention, under the condition that the steel bar framework is provided with the hidden beam and/or the hidden column, the first elongated opening is formed at the position of the partition net corresponding to the hidden beam and/or the hidden column.

According to the production method of the cavity wall provided by the invention, the step of forming the first opening on the partition net comprises the following steps:

cutting a part of the partition net on the partition net through a cutting device to form a blocking piece, wherein the first opening is formed when the blocking piece is separated from the partition net.

According to the production method of the cavity wall provided by the invention, the cutting part of the partition net on the partition net by the cutting device to form the blocking piece, and the first opening is formed when the blocking piece is separated from the partition net, comprising the following steps:

and cutting the partition net along a U-shaped path on the partition net through the cutting device to form the plugging sheet with one side connected with the partition net.

According to the production method of the cavity wall provided by the invention, after the first page plate is poured, the first opening is closed, and the method comprises the following steps:

and correspondingly binding the plugging sheet and the partition net together to seal the first opening.

According to the production method of the cavity wall provided by the invention, in the case that the concrete is poured to the lower layer of steel bars through the concrete conveying pipeline along the horizontal direction to form the first sheet plate, the method comprises the following steps:

and uniformly pouring the quantitative concrete to the lower layer of steel bars through the concrete conveying pipeline to form the first sheet with preset thickness.

a second opening is formed in the partition net and used for placing embedded parts;

and a third opening is formed in the partition net and used for placing a counter-pull connecting piece.

binding wall meshes to form the upper layer of steel bars and the lower layer of steel bars respectively;

connecting a supporting steel bar to the lower layer steel bar, and arranging the isolating net at one end of the supporting steel bar, which is far away from the lower layer steel bar;

and the upper layer steel bars and the lower layer steel bars are connected through tie bars.

According to the production method of the cavity wall provided by the invention, after the upper layer of steel bars and the lower layer of steel bars are connected through the tie bars, the production method further comprises the following steps:

and a first cushion block is clamped between the lower layer of steel bars and the die table, and/or a second cushion block is clamped between the partition net and the upper layer of steel bars.

According to the production method of the cavity wall body, the prefabricated integral type steel reinforcement framework is adopted, the position of the steel reinforcement framework can be adjusted in real time before concrete is poured, and the concealed project can be checked and accepted conveniently (such as a steel reinforcement protective layer, pre-buried positioning and the like), so that the quality of a finished product is effectively improved; arrange between upper reinforcing bar and the lower floor's reinforcing bar and separate the off net, can follow vertical direction and pour concrete to lower floor's reinforcing bar through separating the off net in order to form first page board, the bottom that not only can regard as the second page board of wall net this moment, exempt from the upset when also can realizing pouring first page board.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a flow chart of a method for producing a cavity wall provided by the present invention;

FIG. 2 is one of the schematic structural diagrams of the cavity wall provided by the present invention;

FIG. 3 is a second schematic structural view of a cavity wall according to the present invention;

FIG. 4 is a third schematic structural view of a cavity wall according to the present invention;

FIG. 5 is a fourth schematic view of the structure of the cavity wall provided by the present invention;

FIG. 6 is a fifth schematic view of the structure of the cavity wall provided by the present invention;

FIG. 7 is one of the schematic structural diagrams of the partition net provided by the present invention;

FIG. 8 is a second schematic structural view of the partition net of the present invention;

FIG. 9 is a third schematic view of the partition net according to the present invention;

FIG. 10 is a fourth schematic view of the partition net according to the present invention;

reference numerals:

1. a mould table; 2. a lower layer side die; 3. a first wire cassette; 4. lower layer steel bar; 5. a first cushion block; 6. supporting the reinforcing steel bars; 7. upper layer steel bars; 8. a second cushion block; 9. stretching a rib; 10. separating the net; 11. a cutting device; 12. an upper layer side die; 13. a second wire cassette; 14. A counter-pull connector; 15. a second sheet; 16. a concrete transfer line; 17. a first sheet; 18. a plugging sheet; 19. a first opening.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

When the double-skin wall is prepared in the prior art, two times of maintenance are often needed, and work such as overturning is needed. Therefore, the production efficiency of the prefabricated wall is relatively low, the process is complex, and the cost is high. And when the concrete is turned over, the cured concrete at the side A with the reinforcement cage needs to be pressed into the concrete at the side B, and the structure can be damaged in the process.

Subsequently, the prior art gradually generates a turnover-free process, but the applicant finds that in the turnover-free process in the prior art, a reinforcement cage still enters plain concrete in a pressing mode, quality hidden dangers exist in the aspects of the thickness, the embedded position, the verticality and the like of a reinforcement protection layer, and the process is difficult to ensure the quality of a finished product under the condition that the reinforcement and embedding are complicated. Or, the whole framework of steel reinforcement that exempts from among the prior art can't be prefabricated to the turnover technology, need install some framework of steel reinforcement earlier, then pour lower floor's page or leaf board after, install another part framework of steel reinforcement again, this kind of process is complicated, and because the framework of steel reinforcement partly prefabricated in lower floor's page or leaf board, another part after-installation, lead to framework of steel reinforcement can't control and adjust according to whole acceptance standard, the quality can't guarantee.

In order to solve the above problem, as shown in fig. 1, a method for producing a cavity wall according to an embodiment of the present invention includes:

s100, prefabricating the whole steel reinforcement framework of the cavity wall body, wherein the steel reinforcement framework comprises upper-layer steel reinforcements 7, lower-layer steel reinforcements 4 and a partition net 10 positioned between the upper-layer steel reinforcements 7 and the lower-layer steel reinforcements 4.

The distance between the partition net 10 and the upper layer steel bar 7 is smaller than the distance between the partition net 10 and the lower layer steel bar 4. That is, the partition net 10 is disposed adjacent to the upper-layer reinforcing bars 7.

Wherein, the reinforcement cage ligature is accomplished in advance, that is to say, before concreting, whole reinforcement cage can be placed in the mould platform completely. Compared with the process for binding the reinforcement cage in real time in the prior art, the prefabricated integral reinforcement cage is adopted, complete hidden project acceptance can be carried out before concrete pouring, and quality control items such as a pre-buried position, a reserved hole position and a reinforcement cage protective layer are controlled and adjusted to prevent the quality of the reinforcement cage from being not qualified.

And the real-time ligature reinforcing bar among the prior art, before concrete placement, because the framework of steel reinforcement is not in the mould, can't carry out relevant hidden quality and accept, and the framework of steel reinforcement is impressed the in-process and is difficult to the fixed framework of steel reinforcement position, easily causes the disturbance to the built-in fitting, and then leads to doing over again.

As shown in fig. 2, in S200, a mold base 1 is prepared, and a lower side mold 2 is erected on the mold base 1.

The lower side forms 2 define the peripheral edges of the concrete and the top surface of the form base 1 defines the bottom wall of the concrete.

The lower side forms 2 are detachably connected with the form stands 1, and include but are not limited to bolt connection, screw connection and magnetic connection. The side face, deviating from the pouring cavity wall body, of the lower-layer side formwork 2 is provided with a hollow cavity, so that the purpose of reducing the weight of the lower-layer side formwork 2 can be achieved.

As shown in fig. 3, in S300, a steel reinforcement frame is arranged in a space surrounded by the die table 1 and the lower side die 2.

Wherein, lower floor's reinforcing bar 4 is close to mould platform 1 and arranges.

As shown in fig. 4, in S400, the upper side form 12 is erected above the lower side form 2.

Wherein, upper side forms 12 and lower floor's side forms 2 can link together through the connecting piece, and upper side forms 12 correspond with upper reinforcing bar 7 and arrange.

The side face, away from the pouring cavity wall body, of the upper layer side formwork 12 is provided with a hollow cavity, and the purpose of reducing the weight of the upper layer side formwork 12 can be achieved. The upper side forms 12 define the peripheral edges of the concrete and the partition mesh of the steel reinforcement cage circumscribes the bottom wall of the upper concrete.

As shown in fig. 5, concrete is poured through the partition net 10 in a vertical direction or through the concrete transfer pipe 16 in a horizontal direction to the lower-layer reinforcing bars 4 to form the first leaf 17S 500.

That is, concrete may be poured in a vertical direction through the partition net 10 to the lower-layer reinforcing bars 4 to form the first leaf 17, or in a horizontal direction through the concrete transfer pipe 16 to the lower-layer reinforcing bars 4 to form the first leaf 17, the concrete transfer pipe 16 being located between the lower-layer reinforcing bars 4 and the partition net 10.

As shown in fig. 6, at S600, concrete is poured into the partition net 10 and the upper layer of steel bars 7 to form the second sheet 15.

The partition net 10 is used as the bottom of the second leaf plate 15, so that the turning-free process of pouring the first leaf plate 17 is realized.

According to the production method of the cavity wall body, the prefabricated integral type steel reinforcement framework is adopted, the position of the steel reinforcement framework can be adjusted in real time before concrete is poured, and the concealed engineering can be checked and accepted conveniently (such as a steel reinforcement protective layer, pre-embedded positioning and the like), so that the quality of a finished product is improved effectively; arrange between upper reinforcing bar 7 and lower floor's reinforcing bar 4 and separate disconnected net 10, can follow vertical direction and pour concrete to lower floor's reinforcing bar 4 through separating disconnected net 10 in order to form first page board 17, the separation net 10 at this moment not only can regard as the bottom of second page board 15, can also realize exempting from when pouring first page board 17 and overturn.

In an alternative embodiment, the entire framework of rebars of the cavity wall is prefabricated with the concrete passing through the spacer net 10 to the underlying rebars in the vertical direction to form the first sheet 17, comprising:

a first opening 19 is arranged on the partition net 10;

at this time, the corresponding pouring of the first sheet 17 and the second sheet 15 includes:

vertically pouring concrete through the first opening 19 to the underlying rebar 4 to form a first leaf 17;

after the first plank 17 is poured, the first opening 19 is closed;

and pouring concrete to the partition net 10 and the upper layer of steel bars 7 to form a second leaf plate 15.

It should be noted that a plurality of first openings 19 may be formed in the partition net 10, and the plurality of first openings 19 may be uniformly arranged, so as to facilitate rapid concrete pouring to the lower layer of steel bars 4.

The mesh size of the partition net 10 can be matched according to the particle size and the expansion degree of the concrete, so that the partition net can support the concrete, the poured concrete can not leak to the lower-layer space, and the concrete for pouring the second leaf plate 15 can not fall on the first leaf plate 17.

The shape of the first opening 19 may be various, and may be, for example, a square or a circle; in an alternative embodiment, in the case that the steel reinforcement framework has hidden beams and/or hidden columns, the partition net 10 corresponding to the hidden beams and/or hidden columns is provided with a first opening 19 in a long strip shape, and the length of the long strip shape may be set corresponding to the corresponding hidden beams and/or hidden columns.

As shown in fig. 7 and 8, for example, for the steel reinforcement framework with hidden beams and/or hidden columns, the steel reinforcement at the corresponding position of the hidden beams and/or hidden columns is complicated, for example, when the distance between stirrups of the hidden beams and/or hidden columns is 100mm, if the first opening with a small square shape is provided, the concrete is not favorably fallen. After the first opening of the long strip is formed, concrete can quickly fall to the lower-layer steel bars through the first opening to form the lower-layer leaf plate, and work efficiency is improved.

In alternative embodiments, the reinforcing bars of the hidden beams and/or the hidden columns can be connected with the partition net 10 at the positions of the hidden beams and/or the hidden columns, and the connecting is performed by binding or welding. Therefore, the hidden beams and/or the hidden columns can have a good supporting effect on the partition net 10 due to relatively dense reinforcing steel bars (such as stirrups), even if the first elongated opening 19 formed in the partition net 10 is large, the supporting effect can also ensure that the partition net 10 does not deform, and further, when the second sheet plate 15 is poured, the phenomenon that the thickness of the second sheet plate 15 is uneven due to the deformation of the partition net 10 can be avoided, and the quality of the cavity wall body is ensured.

In an alternative embodiment, the partition net 10 is provided with a first opening 19, which comprises:

the partition net 10 is cut by a cutting device 11 on the partition net 10 to form a blocking sheet 18, and the blocking sheet 18 forms a first opening 19 when separated from the partition net 10.

It should be noted that the cutting device 11 may be a scissors or a cutter, etc., and the cutting device 11 may be used to cut the first openings 19 with different shapes on the partition net 10.

In an alternative embodiment, the partition net 10 is cut by the cutting device 11 on the partition net 10 to form the blocking sheet 18, and the blocking sheet 18 forms the first opening 19 when separated from the partition net 10, including:

as shown in fig. 9 and 10, the partition net 10 is cut along a "U" shaped path on the partition net 10 by a cutting means 11 to form a plugging sheet 18 connected to the partition net 10 at one side.

It should be noted that, the partition net 10 is cut along the U-shaped path, at this time, the blocking piece 18 formed by the cut partition net 10 does not completely fall off, three sides of the blocking piece 18 are separated from the partition net 10, one side of the blocking piece 18 is connected with the partition net 10, and the blocking piece 18 can rotate relative to the partition net 10, so as to expose the lower layer of the steel bar 4, and when the first opening 19 needs to be closed, the blocking piece 18 can be quickly closed.

In an alternative embodiment, after the first sheet 17 is poured, the first opening 19 is closed, which includes:

the blocking sheet 18 and the partition net 10 are bound together correspondingly to close the first opening 19.

For example, the partition net 10 is cut along an "O" shaped path, at which the blocking sheet 18 falls completely, and when it is desired to close the first opening 19, the blocking sheet 18 is bound to the partition net 10, at which time the first opening 19 is completely closed.

Alternatively, the spacer net 10 is cut along an "O" shaped path, at which time the blocking piece 18 falls completely, and when it is desired to close the first opening 19, the blocking piece 18 is welded to the spacer net 10, at which time the first opening 19 is completely closed.

In an alternative embodiment, in the case where concrete is poured in a horizontal direction through the concrete delivery pipe 16 to the underlying reinforcing bars 4 to form the first leaf 17, it comprises:

and uniformly pouring a certain amount of concrete to the lower-layer steel bars 4 through the concrete conveying pipeline 16 to form a first page 17 with a preset thickness.

It should be noted that, according to the required thickness of the first sheet, the amount of concrete is calculated, and the concrete is uniformly poured on the lower layer of steel bars 4 through the concrete conveying pipeline 16, so as to form the first sheet 17. Therefore, excessive or insufficient concrete can be avoided, and excessive or insufficient thickness of the lower-layer page plate can be avoided.

In an optional embodiment, the particle size of the concrete is less than or equal to 15mm, the slump of the concrete is 140-160 mm, and the expansion of the concrete is 650mm +/-20 mm.

In order to avoid the thickness of the first leaf 17 from becoming too low or too high, the concrete may have a particle size of 10mm, a slump of 150mm and an expansion of 630 mm.

In an alternative embodiment, the entire rebar skeleton of the prefabricated cavity wall comprises:

and a second opening is formed in the partition net 10 and used for placing embedded parts.

For example, the embedded part includes a second wire box 13, wherein the second wire box 13 is sequentially disposed through the upper-layer reinforcing bars 7 and the partition net 10.

Wherein a first wire box 3 is arranged through the lower layer of steel bars 4.

and a third opening is formed in the partition net 10 and used for placing the counter-pull connecting piece 14.

The counter-pull connector 14 penetrates the upper layer reinforcing bar 7, the spacer net 10, and the lower layer reinforcing bar 4 in this order. Wherein, an air conditioning hole site, a counter-pull hole site, etc. can be formed by the counter-pull connecting piece 14.

binding wall meshes to form upper-layer steel bars 7 and lower-layer steel bars 4 respectively;

connecting a support steel bar 6 to the lower layer steel bar 4, and arranging a separation net 10 at one end of the support steel bar 6 far away from the lower layer steel bar 4;

the upper layer reinforcing steel bars 7 and the lower layer reinforcing steel bars 4 are connected through the lacing wires 9.

Wherein, the support bar 6 can be a horse stool bar, and the support bar 6 is used for supporting the separation net 10, so that the separation net 10 is in a horizontal posture.

It should be noted that the third opening can also be used for passing the tie bar 9, so as to connect the upper layer reinforcing bar 7 and the lower layer reinforcing bar 4.

In an alternative embodiment, after the upper steel bar 7 and the lower steel bar 4 are connected by the tie bar 9, the method further comprises:

a first cushion block 5 is clamped between the lower layer steel bar 4 and the mould table 1; or a second cushion block 8 is clamped between the partition net 10 and the upper-layer steel bars 7; or, a first cushion block 5 is clamped between the lower-layer steel bar 4 and the die table 1, and a second cushion block 8 is clamped between the partition net 10 and the upper-layer steel bar 7.

It should be noted that, a plurality of first cushion blocks 5 are uniformly distributed on the surface of the mold table 1, and the first cushion blocks 5 can form linear supports on the whole supporting surface, so as to ensure that the lower layer steel bars 4 erected thereon do not collapse during the process of pouring concrete.

The first spacer 5 includes, but is not limited to, a block of cement, concrete or plastic. The concrete block is a mixture of cement and stones. Set up first cushion 5 and can raise the distance of lower floor's reinforcing bar 4 and mould platform 1 to lower floor's reinforcing bar 4 is located the middle part of first page board 17 in pouring first page board 17, improves first page board 17's mechanical properties. The height of the lower layer of steel bars 4 can be adjusted by replacing the first cushion blocks 5 with different thicknesses, so that the thickness and other parameters of the steel bar protection layer of the cavity wall body can be adjusted.

It can be understood that, a plurality of second cushion blocks 8 are uniformly distributed on the surface of the partition net 10, and the second cushion blocks 8 can form linear supports on the whole supporting surface, so that the upper layer steel bars 7 erected on the second cushion blocks do not collapse in the process of pouring concrete.

Like the first head block 5, the second head block 8 includes, but is not limited to, a block of cement, concrete or plastic. The concrete block is a mixture of cement and stones.

Set up the second cushion 8 and can raise the distance of upper reinforcing bar 7 and wall net 10 to upper reinforcing bar 7 is located the middle part of second page board 15 in pouring second page board 15, improves the mechanical properties of second page board 15. The distance from the partition net 10 to the upper-layer steel bars 7 can be adjusted by replacing the second cushion blocks 8 with different thicknesses, so that the thickness and other parameters of the steel bar protection layer of the cavity wall body can be adjusted.

The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A method for producing a cavity wall body is characterized by comprising the following steps:

erecting an upper layer side formwork above the lower layer side formwork;

2. The method for producing a cavity wall according to claim 1, wherein the prefabricating of the entire reinforcement cage of the cavity wall comprises:

a first opening is formed in the partition net;

vertically casting the first sheet through the first opening;

after the first page plate is poured, closing the first opening;

and pouring the second page plate.

3. The production method of the cavity wall body as claimed in claim 2, wherein in the case that the steel reinforcement framework is provided with a hidden beam and/or a hidden column, the first opening is formed in a long strip shape at the position of the partition net corresponding to the hidden beam and/or the hidden column.

4. The method for producing a cavity wall according to claim 2, wherein the step of forming the first opening in the partition net comprises:

5. The method for producing a cavity wall according to claim 4, wherein the cutting of a portion of the partition net on the partition net by a cutting device to form a block piece, the block piece forming the first opening when separated from the partition net, comprises:

6. The method for producing a cavity wall according to claim 4, wherein the step of closing the first opening after the first panel is poured comprises the steps of:

7. The method for producing a cavity wall according to claim 1, wherein in the case of pouring concrete to the lower layer of steel reinforcement through the concrete conveying pipeline in the horizontal direction to form the first sheet, the method comprises the following steps:

8. The method for producing a cavity wall according to claim 1, wherein the prefabricating of the entire reinforcement cage of the cavity wall comprises:

9. The method for producing a cavity wall according to claim 1, wherein the prefabricating of the entire reinforcement cage of the cavity wall comprises:

10. The method for producing a cavity wall body according to claim 9, wherein after the connecting the upper reinforcing bars and the lower reinforcing bars by tie bars, the method further comprises: