CN101298794A - Cast-in-situ reinforced concrete or prestressed reinforcement concrete hollow slab - Google Patents

Abstract

A cast-in-situ reinforced concrete or pre-stress reinforced concrete hollow slab, comprising a reinforced concrete, a hollow tyre body (1) that is covered in the cast-in-situ reinforced concrete. The hollow tyre body (1) is composed of outer walls (2) and is provided with a cavity (3), characterized in that the outer wall (2) at upper or lower side of the hollow tyre body (1) is composed of a pre-cast slab wall (4) and a slurry blank body (5) that are cascaded and adhered in a soft and hard way. The cascade layer of the slurry blank body (5) is provided with a reinforcing objects (6) exposed outside the hollow tyre body (1); the cavity (3) is not provided with a reinforcing element (18). The invention is appropriate for the hollow slab, floor, house, wall body, basic bottom plate and bridge of the cast-in-situ reinforced concrete or pre-stress reinforced concrete, in particular for hollow floor without beam.

Description

A kind of cast-in-place reinforced concrete or prestressed reinforced concrete hollow slab

This application is a divisional application of an invention patent application with an application date of August 11, 2004, an application number of 200410155218.0, and a title of "a hollow matrix for filling cast-in-place concrete".

(1) Technical field

The invention relates to a hollow slab of cast-in-place reinforced concrete or prestressed reinforced concrete.

(2) Background technology

At present, the cast-in-place concrete hollow floor is a widely used floor structure. The lightweight permanent tire molds filled in it include various hollow tubes and boxes, and the boxes are hollow or solid. For example, the patent No. ZL99249798.1, which the applicant applied for on November 29, 1999, is a utility model patent named "fiber-reinforced thin-walled member for reinforced concrete filling", which discloses a thin-walled formwork member, including an upper plate, The surrounding side walls, the lower bottom, and the upper plate, the surrounding side walls and the lower bottom form a polyhedral cavity. Another example is that the patent No. is ZL00203695.9, and the name is called "combined concrete hidden rib floor slab" utility model patent, which discloses a formwork member in its specification, which can be solid or hollow, and its shape can be According to design requirements, it can be made into rectangle, circle, polygon and other shapes. However, it is inconvenient to make such a building component, the production efficiency is low, it is not convenient for assembly line production, and the corresponding cost is high. Therefore, it is urgent to develop a novel cast-in-place reinforced concrete or prestressed reinforced concrete hollow slab.

(3) Contents of the invention

The object of the present invention is to provide a hollow slab of cast-in-place reinforced concrete or prestressed reinforced concrete, which has the characteristics of easy manufacture, high production efficiency and low cost.

The solution of the present invention is based on the prior art, including reinforced concrete and hollow carcass. The hollow carcass is wrapped in the cast-in-place reinforced concrete. It is characterized in that the outer wall of the upper or lower part of the hollow carcass is made of prefabricated board walls and slurry embryos, which are soft and hard laminated and cemented. Reinforcements are arranged in the superimposed layers of the slurry embryos, and the reinforcements are exposed outside the hollow carcass. There are no reinforcements in the cavity. In this way, since at least one outer wall of the hollow carcass is made of the prefabricated board wall and the slurry embryo body, which are soft and hard laminated and solidified, the hollow carcass with one side opening can be made first, and then, with the opening facing upward, the prefabricated The outer wall panels are hung or placed on the opening surface, and the prefabricated outer wall panels are blocked with slurry embryos. After the slurry is hardened, the hollow matrix can be obtained after curing to the specified age, which is easy to manufacture. , high production efficiency and low corresponding cost; at the same time, the hollow carcass also has the characteristics of simple structure, high strength, high rigidity, excellent deformation resistance, anti-vibration performance, convenient construction, fast construction speed, etc., thereby achieving the purpose of the present invention. It is suitable for hollow slabs, floors, roofs, walls, foundation slabs and bridges of cast-in-place reinforced concrete or prestressed reinforced concrete, especially for hollow beamless floors.

The laminated layer strength and impact resistance in the hollow carcass are greatly improved, so that when the hollow carcass is applied to the cast-in-place concrete hollow floor, it is not easy to be damaged, can fully meet the construction bearing requirements, and is convenient for construction.

The present invention is also characterized in that the hollow carcass is a polyhedron. In this way, when the hollow carcass is a polyhedron, it is convenient to manufacture, and it is easy to realize mechanized mass production; if the hollow carcass is a regular polyhedral hollow carcass, it can more fully meet the use requirements of various regular-designed floors. At the same time, those skilled in the art can also produce and use irregular polyhedral hollow carcass with variable diameter or special shape according to the requirements to meet the use requirements in different situations and to facilitate the application.

The present invention is also characterized in that the hollow carcass is a hexahedron. In this way, when the hollow carcass is a hexahedron, it is convenient to manufacture and realize mechanized mass production; if the hollow carcass is a regular hexahedral hollow carcass, it can more fully meet the use requirements of various regular-designed floors. At the same time, those skilled in the art can also produce and use irregular diameter-reducing or irregular hexahedral hollow carcass according to requirements to meet the use requirements in different situations, so as to facilitate the application.

The present invention is also characterized in that the outer walls of at least one side of the hexahedral hollow carcass opposite to each other are all made of prefabricated board walls and slurry embryos laminated with soft and hard, cemented and hardened. In this way, during the production process of the hexahedral hollow carcass, the wall surface of the hollow carcass is made by the way of prefabricated board wall and slurry embryo body, which is soft and hard cemented and solidified, forming the outer wall of the superimposed structure, which greatly improves the rigidity of the hollow carcass and strength, at the same time, it also reduces the templates required for the production of the hollow carcass, saving the production cost.

The present invention is also characterized in that the hollow carcass is provided with a support foot, or a reinforcement is provided in the support foot, or the reinforcement extends into the outer wall for anchoring. In this way, when the hollow carcass is applied to the cast-in-place concrete floor, the supporting feet can support the hollow carcass, and accurately arrange the hollow carcass at the middle layer of the floor to ensure the construction quality of the floor. If reinforcements are installed in the support feet, or when the reinforcements extend into the outer wall for anchoring, the strength of the support feet and the connection strength between the support feet and the hollow carcass can be improved, so that the support feet are not easy to break and fall, and at the same time, improve its carrying capacity.

The present invention is also characterized in that the supporting feet are fixed feet. In this way, the integrity between the support foot and the hollow carcass is better, and construction is more convenient.

The present invention is also characterized in that the supporting feet are movable feet. In this way, when the hollow carcass is applied to the cast-in-situ concrete hollow floor, the construction speed of the hollow floor can be greatly improved, and at the same time, it is convenient to carry and not easy to damage the supporting feet.

The present invention is also characterized in that the supporting feet are split feet. In this way, when the supporting feet are split feet, the supporting feet are disassembled before being installed in the cast-in-situ hollow concrete floor, which facilitates the production, stacking, transportation and application of the hollow carcass, and ensures the reliability of the supporting feet.

The present invention is also characterized in that the support feet are mortar hard feet, concrete feet or plastic feet. In this way, it is convenient for design and construction units to choose, and it is beneficial to reduce the cost of the hollow carcass.

The present invention is also characterized in that the hollow carcass or/and the support feet are provided with fixed or separate anti-floating components. In this way, fixed or separate anti-floating parts are arranged on the hollow carcass or the support feet. When the hollow carcass is applied to the cast-in-situ concrete hollow floor, the hollow carcass can be effectively prevented from falling by fixing the anti-floating parts. The dislocation and floating can greatly improve the pouring quality of the cast-in-place concrete hollow floor.

The present invention is also characterized in that a cantilevered rib spacing width limiting member is arranged on the side outer wall of the hollow carcass. In this way, after the cantilevered rib spacing width-limiting parts are arranged on the side outer wall of the hollow carcass, when the hollow carcass is applied to the cast-in-situ concrete hollow floor, the rib spacing width-limiting parts can effectively ensure the dark space in the floor. The width of the rib is consistent with the design width. While limiting the position, the rib spacing width limiting piece can also play the role of supporting the reinforcement between the ribs and positioning the reinforcement so that the reinforcement on the upper part of the hidden rib will not fall. The lower part of the hidden rib, thus effectively ensuring the pouring quality of the cast-in-place concrete hollow floor.

The present invention is also characterized in that the outer wall of the hollow carcass is provided with a reinforcing bar pad or pad. In this way, when the hollow carcass is applied to the cast-in-place concrete hollow floor, the pads or spacers of the steel bars provided on the outer wall of the hollow carcass can make the steel bars in the floor overhead, so that the steel bars in the floor can be connected with the hollow floor. Maintain a proper distance between the carcass. After the cast-in-place concrete is cast, it can ensure that the steel bars are completely wrapped by the cast-in-place concrete, so as to ensure that the binding force between the steel bars and the cast-in-place concrete is uniform and uniform, and the quality of the cast-in-place concrete floor is guaranteed; at the same time , It can also prevent the corrosion of steel bars; and the setting of pads or pads makes the laying of steel bars more convenient, which can greatly facilitate the construction and application of hollow carcass.

The present invention is also characterized in that reinforcements are arranged in the outer wall, and the reinforcements are steel bars, steel wires, steel mesh, steel wire mesh, thin metal strips, organic thin strips, fiber tapes, fiber filaments, fiber nets, and fiber nets. At least one of plaid and short fibers. In this way, the strength of the outer wall provided with reinforcements is greatly improved, and the diversity of reinforcements facilitates the selection of materials, which is beneficial to reducing the cost of the hollow carcass.

The invention is also characterized in that the reinforcements in said outer wall are connected to each other. In this way, after the reinforcements in the outer wall are connected to each other, the integrity of the hollow carcass can be greatly improved, making it difficult to crack. At the same time, the loss rate of the hollow carcass can be greatly reduced, and the construction cost can be reduced.

The present invention is also characterized in that the reinforcement is exposed outside the hollow carcass. In this way, when the hollow carcass is applied to the floor, the exposed reinforcement of the hollow carcass is combined with the cast-in-place concrete, which can greatly improve the bonding strength between the hollow carcass and the cast-in-place concrete, and make up for the difference between cast-in-place and prefabricated concrete. The strength loss of the joined joint interface is beneficial to construction and application.

The feature of the present invention is that the hollow carcass is further provided with at least one of arc corners, chamfers, inner corners, grooves, pits and holes. In this way, when the structure needs local reinforcement, arc corners, chamfers, inner corners, grooves, pits, holes and other parts can be combined with cast-in-place concrete to locally strengthen the structure and make the structure more reasonable; , chamfers, inner corners, grooves, pits, holes and other parts are also convenient for the layout of various pipelines, which is conducive to reducing construction costs.

The present invention is also characterized in that at least one surface of the outer wall of the hollow carcass is provided with cross-shaped or well-shaped or Pozi-shaped grooves. In this way, when the hollow carcass is applied to the floor, after the cast-in-place concrete is poured into the groove, a cast-in-place cross or well-shaped or rice-shaped concrete reinforcing bar is formed, and the cross-shaped reinforcing rib strengthens the cast-in-place concrete on the upper part of the hollow carcass. Concrete thin slabs and well-shaped reinforcing ribs can greatly improve the bearing capacity of the cast-in-place concrete slabs on the upper part of the hollow carcass, and the rice-shaped reinforcing ribs make the cast-in-place concrete slabs on the upper part of the hollow carcass form a multi-directional structure that can transmit stress in eight directions , they can effectively improve the strength and rigidity of the floor.

The present invention is also characterized in that prefabricated reinforcements are arranged in the cavity. In this way, since prefabricated reinforcements are provided in the cavity, the strength and rigidity of the hollow carcass are greatly improved, and it is not easy to be damaged during transportation and construction. At the same time, it can also participate in the force bearing and transmission of the floor.

The present invention is also characterized in that the prefabricated reinforcement is a hollow rod, and the two ports of the hollow rod communicate with the outside of the outer wall to form a connected hole. In this way, since there are connected holes formed on the hollow carcass, concrete can be poured in during the construction process to form a combination of cast-in-place and prefabricated reinforcements, which can greatly enhance the strength and rigidity of the reinforcements, and at the same time, can participate in the construction of the floor Stress and force transmission can improve the mechanical properties of the floor; in addition, the reinforcement is a hollow reinforcement, which can greatly reduce the weight of the hollow carcass and facilitate transportation and construction.

The present invention is also characterized in that the groove provided on the hollow carcass communicates with the connected hole of the hollow rod. In this way, when pouring concrete, the combination of the cast-in-place concrete reinforcement formed in the hollow carcass and the cast-in-place concrete reinforcement in the hollow carcass can greatly improve the mechanical properties of the floor, making the floor structure more firm and reasonable, and the overall structure of the floor Performance is better.

The present invention is also characterized in that the outer wall is a tire wall of a flat plate, an arc plate, a folded plate, a corrugated plate or a combination thereof. In this way, when the outer wall is a flat plate, the production of the hollow carcass is convenient, and the fluidity of the concrete on its outer surface is good; if it is an arc plate, the floor slab using its hollow carcass can form a continuous arched stress structure, and it can effectively improve At the same time, the hollow rate inside the floor can greatly increase the joint area between the outer wall and the cast-in-place concrete, so that the hollow carcass and the cast-in-place concrete can be integrated into a whole, which can effectively improve the integrity of the floor.

The present invention is also characterized in that at least one movable and detachable connecting cover is provided on the outer wall of the hollow carcass, or reinforcements are exposed on the cover. In this way, the detachable connection cover plate or the cover plate exposed to the reinforcement can be set to facilitate the inspection of its internal structure during construction, and facilitate the layout of pipelines or other prefabricated parts such as switch boxes, wire boxes, stiffeners, stiffeners, etc. The combination of the exposed reinforcement on it and the cast-in-place concrete can make it have better gripping force, and after construction, its integrity is better. When the reinforcement is exposed from the connecting cover plate, the bonding strength between it and the cast-in-situ concrete can be greatly improved.

The present invention is also characterized in that the connecting cover plate is provided with a connecting piece matching the connection of the hollow carcass. In this way, the connecting piece matched with the hollow carcass can be provided to quickly and conveniently join or disassemble the cover plate; when pouring concrete in place, it can effectively prevent the concrete from flowing into the inner cavity of the hollow carcass. The connecting parts can be ferrules, bolts, male and female grooves, sockets, sawtooth parts, etc.

The present invention is also characterized in that a bottom plate is arranged under the support feet on the bottom surface of the hollow carcass. In this way, the base plate under the feet can replace the formwork in the construction process, which can save a lot of manpower and material resources, save the assembly and disassembly process of the formwork, improve the construction speed and reduce the construction difficulty.

The present invention is also characterized in that the hollow carcass is provided with at least one of a junction box, an electrical conduit, an air pipe or a water pipe. In this way, the junction box and water and electricity pipelines can be arranged very conveniently, and the air ducts arranged in the hollow carcass can also save the building space occupied by the peripheral air ducts, so that the effective use space of the building can be improved, and the setting of the water pipes can be easily concealed. Water, saving the space for pipeline layout, making the layout of fire water pipes safer and more convenient.

The present invention is also characterized in that part or all of the cavity of the hollow carcass is filled with lightweight materials. Lightweight materials can be foamed plastics, expanded perlite, expanded vermiculite, foamed or air-entrained lightweight concrete, and the like. In this way, the thermal insulation, heat insulation and sound insulation properties of the hollow carcass can be greatly improved.

The present invention is also characterized in that the hollow carcass is provided with boss modules. In this way, according to the design requirements, the unstressed concrete part can be replaced by the boss module, which can reduce the structural weight and reduce the cost of the floor.

The present invention is also characterized in that the boss module is fixed on the hollow carcass by bonding, welding, riveting, socket, ferrule or bolt connection, or the boss module and the hollow carcass are integrally formed as a whole. In this way, the boss module can be connected to the carcass in various ways, making it easy to manufacture and more convenient to use.

The present invention is also characterized in that the outer wall of the hollow carcass is provided with a laminated layer of strip-shaped or plate-shaped lightweight materials. In this way, after the strip-shaped or plate-shaped lightweight material lamination layer is set on the outer wall of the hollow carcass, according to the different situations and requirements of actual applications, grooves or pits can be made on the strip-shaped or plate-shaped lightweight material or Hollow carcass will not be damaged, which greatly facilitates the embedding of pipelines, steel bars and various embedded parts during construction and application.

The present invention is also characterized in that more than two hollow carcass can be joined together to form a unidirectional, bidirectional or multidirectional tire mold assembly. In this way, the conjoined hollow carcass can make the construction simpler, the construction speed faster, the structure lighter, and the design easier.

The present invention is also characterized in that a set of opposite outer walls of the hollow carcass are parallel. In this way, when the above-mentioned hollow carcass is applied to the cast-in-place concrete hollow floor, the relatively parallel outer walls can form regular hidden ribs, which is beneficial to quality control of the stressed structure inside the floor.

The present invention is also characterized in that the two sets of opposite outer walls of the hollow carcass are parallel to each other. In this way, when the above-mentioned hollow carcass is applied to the cast-in-situ concrete hollow floor, the outer walls of the two sets of opposite sides are parallel to each other, which can make the stressed hidden ribs inside the floor relatively parallel, which can greatly optimize the stressed structural system and improve the strength of the floor. mechanical properties.

The present invention is also characterized in that the three sets of opposite outer walls of the hollow carcass are parallel to each other. In this way, when the above-mentioned hollow carcass is applied to the cast-in-situ concrete hollow floor, the outer walls of the three sets of opposite sides are parallel to each other, which can make the stressed hidden ribs inside the floor relatively parallel, which can greatly optimize the stressed structural system and improve the strength of the floor. mechanical properties.

The present invention is also characterized in that the hollow carcass is provided with protruding connectors. In this way, after the protruding connectors are provided on the hollow carcass, it is convenient to connect the hollow carcass and other components or steel bars that need to be connected with it, especially when the hollow carcass is applied to cast-in-place concrete. When it is in the hollow floor, it can greatly facilitate the construction and fully meet the requirements of different users.

(4) Description of drawings

Fig. 1 is a schematic diagram of the structure of the hollow carcass in Example 1 of the present invention, and it is also a partial cross-sectional view of the hollow carcass, and the structure inside the cavity of the hollow carcass can be seen.

Fig. 2 is a schematic diagram of the structure of the hollow carcass in Example 2 of the present invention, and it is also a partial cross-sectional view of the hollow carcass, and the structure inside the cavity of the hollow carcass can be seen.

Fig. 3 is a schematic structural view of the hollow carcass in Example 3 of the present invention, and it is also a partial cross-sectional view of the hollow carcass, and the structure inside the cavity of the hollow carcass can be seen.

Fig. 4 is a schematic structural view of the hollow carcass in Example 4 of the present invention, and it is also a partial cross-sectional view of the hollow carcass, and the structure inside the cavity of the hollow carcass can be seen.

Fig. 5 is a schematic diagram of the structure of the hollow carcass in Example 5 of the present invention, and it is also a partial cross-sectional view of the hollow carcass, and the structure inside the cavity of the hollow carcass can be seen.

Fig. 6 is a schematic structural view of the hollow carcass in Example 6 of the present invention, and it is also a partial cross-sectional view of the hollow carcass, and the structure inside the cavity of the hollow carcass can be seen.

Fig. 7 is a schematic structural view of the hollow carcass in Example 7 of the present invention, and it is also a partial cross-sectional view of the hollow carcass, and the structure inside the cavity of the hollow carcass can be seen.

Fig. 8 is a schematic diagram of the structure of the hollow carcass in Example 8 of the present invention, and it is also a partial cross-sectional view of the hollow carcass, and the structure inside the cavity of the hollow carcass can be seen.

Fig. 9 is a schematic structural view of the hollow carcass in Example 9 of the present invention, and it is also a partial cross-sectional view of the hollow carcass, and the structure inside the cavity of the hollow carcass can be seen.

Fig. 10 is a schematic structural view of the hollow carcass in Example 10 of the present invention, and it is also a partial cross-sectional view of the hollow carcass, and the structure inside the cavity of the hollow carcass can be seen.

Fig. 11 is a schematic structural view of the hollow carcass in Example 11 of the present invention, and is also a partial cross-sectional view of the hollow carcass, in which the structure inside the cavity of the hollow carcass can be seen.

Fig. 12 is a schematic structural view of the hollow carcass in Example 12 of the present invention, and it is also a partial cross-sectional view of the hollow carcass, and the structure inside the cavity of the hollow carcass can be seen.

Fig. 13 is a schematic structural view of the hollow carcass in Example 13 of the present invention, and it is also a partial cross-sectional view of the hollow carcass, and the structure inside the cavity of the hollow carcass can be seen.

Fig. 14 is a schematic structural view of the hollow carcass in Example 14 of the present invention, and it is also a partial cross-sectional view of the hollow carcass, and the structure inside the cavity of the hollow carcass can be seen.

Fig. 15 is a schematic structural view of the hollow carcass in Example 15 of the present invention, and it is also a partial cross-sectional view of the hollow carcass, and the structure inside the cavity of the hollow carcass can be seen.

Fig. 16 is a schematic structural view of the hollow carcass in Example 16 of the present invention, and it is also a partial cross-sectional view of the hollow carcass, and the structure inside the cavity of the hollow carcass can be seen.

Fig. 17 is a schematic structural view of the hollow carcass in Example 17 of the present invention, and it is also a partial cross-sectional view of the hollow carcass, and the structure inside the cavity of the hollow carcass can be seen.

Fig. 18 is a schematic structural view of the hollow carcass in Example 18 of the present invention, and it is also a partial cross-sectional view of the hollow carcass, and the structure inside the cavity of the hollow carcass can be seen.

Fig. 19 is a schematic structural view of the hollow carcass in Example 19 of the present invention, and it is also a partial cross-sectional view of the hollow carcass, and the structure inside the cavity of the hollow carcass can be seen.

Fig. 20 is a schematic structural view of the hollow carcass in Example 20 of the present invention, and it is also a partial cross-sectional view of the hollow carcass, and the structure inside the cavity of the hollow carcass can be seen.

Fig. 21 is a schematic structural view of the hollow carcass in Example 21 of the present invention, and it is also a partial cross-sectional view of the hollow carcass, and the structure inside the cavity of the hollow carcass can be seen.

Fig. 22 is a schematic structural view of the hollow carcass in Example 22 of the present invention, and it is also a partial cross-sectional view of the hollow carcass, and the structure inside the cavity of the hollow carcass can be seen.

Fig. 23 is a schematic structural view of the hollow carcass in Example 23 of the present invention, and it is also a partial cross-sectional view of the hollow carcass, and the structure inside the cavity of the hollow carcass can be seen.

Fig. 24 is a schematic structural view of the hollow carcass in Example 24 of the present invention, and it is also a partial cross-sectional view of the hollow carcass, and the structure inside the cavity of the hollow carcass can be seen.

Fig. 25 is a schematic diagram of the structure of the hollow carcass in Example 25 of the present invention, and it is also a partial cross-sectional view of the hollow carcass, and the structure inside the cavity of the hollow carcass can be seen.

Fig. 26 is a schematic diagram of the structure of the hollow carcass in Example 26 of the present invention, and it is also a partial cross-sectional view of the hollow carcass, and the structure inside the cavity of the hollow carcass can be seen.

Fig. 27 is a schematic structural view of the hollow carcass in Example 27 of the present invention, and it is also a partial cross-sectional view of the hollow carcass, and the structure inside the cavity of the hollow carcass can be seen.

Fig. 28 is a schematic diagram of the structure of the hollow carcass in Example 28 of the present invention, and it is also a partial cross-sectional view of the hollow carcass, and the structure inside the cavity of the hollow carcass can be seen.

Fig. 29 is a schematic diagram of the structure of the hollow carcass in Example 29 of the present invention, and it is also a partial cross-sectional view of the hollow carcass, and the structure inside the cavity of the hollow carcass can be seen.

Fig. 30 is a schematic structural view of the hollow carcass in Example 30 of the present invention, and it is also a partial cross-sectional view of the hollow carcass, and the structure inside the cavity of the hollow carcass can be seen.

Fig. 31 is a schematic structural view of the hollow carcass in Example 31 of the present invention, and it is also a partial cross-sectional view of the hollow carcass, and the structure inside the cavity of the hollow carcass can be seen.

(5) Specific implementation methods

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

As shown in the accompanying drawings, the present invention includes reinforced concrete and a hollow carcass 1. The hollow carcass 1 is wrapped in the cast-in-place reinforced concrete. The hollow carcass 1 is formed by an outer wall 2 and a cavity 3 is inside. The upper or lower outer wall 2 of the hollow carcass 1 is formed by the prefabricated panel wall 4 and the slurry embryo body 5, which are soft and hard laminated and cemented, and the superimposed layers of the slurry embryo body 5 are provided with reinforcements 6, and the reinforcements 6 Exposed outside the hollow carcass 1, there is no reinforcement 18 in the cavity 3. In the accompanying drawings, 1 is the hollow carcass, 2 is the outer wall, 3 is the cavity, 4 is the prefabricated board wall, and 5 is the slurry body. In the following drawings, those with the same number have the same description. As shown in Figure 1, the hollow carcass 1 is formed by an outer wall 2, and the inside is a cavity 3. The upper outer wall 2 of the hollow carcass 1 is a prefabricated board wall 4 and a slurry body 5, which are soft and hard laminated. Made of hard glue. As shown in FIG. 16 , the lower outer wall 2 of the hollow carcass 1 is formed by laminating the prefabricated panel wall 4 and the slurry body 5 with soft and hard layers, cemented and solidified.

The present invention is also characterized in that there are reinforcements 6 in the lamination layers of the slurry blank 5 . As shown in Figure 2, the hollow carcass 1 is formed by surrounding the outer wall 2, and the inside is a cavity 3, and the upper outer wall 2 of the hollow carcass 1 is a prefabricated board wall 4 and a slurry embryo body 5, which are soft and hard laminated and hardened. As shown in the figure, there is a reinforcement 6 in the superimposed layer of the slurry body 5, and the reinforcement 6 shown in the figure is a fiber mesh cloth.

The present invention is also characterized in that the hollow carcass 1 is a polyhedron. As shown in Figure 3, the hollow carcass 1 is formed by surrounding the outer wall 2, and the interior is a cavity 3, and the upper outer wall 2 of the hollow carcass 1 is a prefabricated board wall 4 and a slurry embryo body 5, which are soft and hard laminated and cemented and solidified. As, the hollow carcass 1 is a pyramid-shaped polyhedron.

The present invention is also characterized in that the hollow carcass 1 is a hexahedron. As shown in Figure 4, the hollow carcass 1 is formed by surrounding the outer wall 2, and the inside thereof is a cavity 3, and the outer wall 2 on one side of the hollow carcass 1 is a prefabricated board wall 4 and a slurry embryo body 5, which are soft and hard laminated and cemented. Formed, the hollow carcass 1 is a hexahedron.

The present invention is also characterized in that the outer walls 2 of at least one side of the hexahedral hollow carcass 1 facing each other are all made of prefabricated board walls 4 and slurry blanks 5 that are soft and hard laminated and cemented. As shown in Figure 5, the hollow carcass 1 is formed by the outer wall 2, and the cavity 3 is inside. The hollow carcass 1 has a side wall 2, which is a prefabricated board wall 4 and a slurry embryo body 5, which are soft and hard laminated and cemented. The side outer walls 2 of the hexahedral hollow carcass 1 facing each other are all made of prefabricated board walls 4 and slurry embryo bodies 5, which are soft and hard laminated and cemented.

The present invention is also characterized in that the hollow carcass 1 is provided with a support foot 7, or the support foot 7 is provided with a reinforcement 6, or the reinforcement 6 protrudes into the outer wall 2 for anchoring. As shown in Figure 6, the hollow carcass 1 is formed by surrounding the outer wall 2, and there is a cavity 3 inside, and the upper outer wall 2 of the hollow carcass 1 is a prefabricated board wall 4 and a slurry embryo body 5, which are soft and hard laminated and cemented. In this way, the hollow carcass 1 is provided with a support foot 7, and a reinforcement 6 is also provided in the support foot 7, and the reinforcement 6 extends into the outer wall 2 for anchoring.

The present invention is also characterized in that said support foot 7 is a fixed foot. As shown in Figure 7, the hollow carcass 1 is formed by surrounding the outer wall 2 with a cavity 3 inside, and the upper outer wall 2 of the hollow carcass 1 is the prefabricated board wall 4 and the slurry embryo body 5, which are soft and hard laminated and solidified. As a result, a support foot 7 is arranged under the lower bottom outer wall 2 of the hollow carcass, and the support foot 7 is a fixed foot integrally formed with the outer wall 2 .

The present invention is also characterized in that the supporting feet 7 are movable feet. As shown in Figure 8, the hollow carcass 1 is formed by surrounding the outer wall 2, and there is a cavity 3 inside, and the upper outer wall 2 of the hollow carcass 1 is the prefabricated board wall 4 and the slurry embryo body 5, which are soft and hard laminated and solidified. As a result, a support foot 7 is arranged under the lower bottom outer wall 2 of the hollow carcass, and the support foot 7 is a detachable movable foot.

The present invention is also characterized in that the support foot 7 is a split foot. As shown in Figure 9, the hollow carcass 1 is formed by surrounding the outer wall 2 with a cavity 3 inside, and the upper outer wall 2 of the hollow carcass 1 is the prefabricated board wall 4 and the slurry embryo body 5, which are soft and hard laminated and solidified. As a result, a supporting foot 7 is arranged under the lower bottom outer wall 3 of the hollow carcass, and the said supporting foot 7 is a split foot detachable from the outer wall 3 .

The present invention is also characterized in that the support feet 7 are mortar hard feet, concrete feet or plastic feet. As shown in Figure 10, the hollow carcass 1 is formed by surrounding the outer wall 2, inside which is a cavity 3, and the upper outer wall 2 of the hollow carcass 1 is a prefabricated board wall 4 and a slurry embryo body 5, which are soft and hard laminated and solidified. As a result, a supporting foot 7 is arranged under the lower bottom outer wall 3 of the hollow carcass, and the said supporting foot 7 is a plastic foot.

The present invention is also characterized in that the hollow carcass 1 or/and the support feet 7 are provided with a fixed or separate anti-floating member 8 . As shown in Figure 11, the hollow carcass 1 is formed by surrounding the outer wall 2, and the inside thereof is a cavity 3, and the upper outer wall 2 of the hollow carcass 1 is a prefabricated board wall 4 and a slurry embryo body 5, which are soft and hard superimposed, cemented and solidified. As a result, a support foot 7 is provided under the lower bottom outer wall 2 of the hollow carcass, and a fixed anti-floating member 8 is arranged on the side outer wall 2 of the hollow carcass 1, and the anti-floating member 8 is an iron wire as shown in the figure.

The present invention is also characterized in that the side outer wall 2 of the hollow carcass 1 is provided with a cantilevered rib spacing width limiting member 9 . As shown in Figure 12, the hollow carcass 1 is formed by surrounding the outer wall 2, inside which is a cavity 3, and the upper outer wall 2 of the hollow carcass 1 is a prefabricated board wall 4 and a slurry embryo body 5, which are soft and hard laminated and solidified. In this way, the outer wall 2 of the adjacent side of the hollow carcass 1 is provided with a cantilevered rib spacing width limiting member 9 .

The present invention is also characterized in that the outer wall 2 of the hollow carcass 1 is provided with a reinforcing bar pad 10 or a pad 11 . As shown in Figure 13, the hollow carcass 1 is formed by surrounding the outer wall 2, and there is a cavity 3 inside. The side outer wall 2 of the hollow carcass 1 has a wall body that is a prefabricated board wall 4 and a slurry embryo body 5 that are soft and hard laminated. It is formed by bonding and hardening, and the upper outer wall 2 of the hollow carcass 1 is provided with a pad 10 of steel bars.

The present invention is also characterized in that the outer wall 2 is provided with reinforcements 6, and the reinforcements 6 are steel bars, steel wires, steel mesh, steel wire mesh, metal thin strips, organic thin strips, fiber tapes, fiber filaments, fiber nets , fiber mesh cloth, at least one of short fibers. As shown in Figure 14, the hollow carcass 1 is formed by surrounding the outer wall 2, and the inside is a cavity 3, and the side outer wall 2 of the hollow carcass 1 has a wall body, which is a prefabricated board wall 4 and a slurry embryo body 5, which are soft and hard laminated. It is formed by cementing and hardening. The outer wall 2 of the hollow carcass 1 is provided with a reinforcement block 11. The outer wall 2 is provided with a reinforcement 6. The reinforcement 6 shown in the figure is a steel wire mesh or a glass fiber mesh. Gab.

The invention is also characterized in that said reinforcements 6 in the outer wall 2 are connected to each other. As shown in Figure 15, the hollow carcass 1 is formed by surrounding the outer wall 2, and there is a cavity 3 inside, and the side outer wall 2 of the hollow carcass 1 has a wall body, which is a prefabricated board wall 4 and a slurry embryo body 5, which are soft and hard laminated. It is formed by bonding and hardening. The outer wall 2 of the hollow carcass 1 is provided with a reinforcement block 11, and the outer wall 2 is provided with a reinforcement 6. The reinforcements 6 in the outer wall 2 are connected to each other. The reinforcement 6 is shown in the figure. A thin strip of metal.

The present invention is also characterized in that the reinforcement 6 is exposed outside the hollow carcass 1 . As shown in Figure 16, the hollow carcass 1 is formed by surrounding the outer wall 2, inside which is a cavity 3, the lower bottom outer wall 2 of the hollow carcass 1 is a prefabricated board wall 4 and a slurry embryo body 5, which are soft and hard laminated and cemented. Formed, the outer wall 2 of the upper plate is provided with reinforcements 6, and the reinforcements 6 are exposed outside the hollow carcass 1, and the reinforcements 6 shown in the figure are steel wire mesh.

The present invention is also characterized in that the hollow carcass 1 is further provided with at least one of arc corners 12 , chamfers 13 , inner corners 14 , grooves 15 , pits 16 and holes 17 . As shown in Figure 17, the hollow carcass 1 is formed by surrounding the outer wall 2, and the inside is a cavity 3. The lower bottom 2 of the hollow carcass 1 is the prefabricated board wall 4 and the slurry embryo body 5, which are soft and hard laminated and cemented. As, the hollow carcass 1 is also provided with arc angles 12, pits 16 and holes 17 at the same time.

The present invention is also characterized in that at least one surface of the outer wall 2 of the hollow carcass 1 is provided with a groove 15 in the shape of a cross or a square or a square. As shown in Figure 18, the hollow carcass 1 is formed by surrounding the outer wall 2, and the inside is a cavity 3. The lower bottom 2 of the hollow carcass 1 is the prefabricated board wall 4 and the slurry embryo body 5, which are soft and hard laminated and solidified. As a result, the hollow carcass 1 is also provided with chamfers 13, internal corners 14 and grooves 15, and the groove 15 provided on the outer wall 2 of the upper plate of the hollow carcass 1 is a cross-shaped groove.

The present invention is also characterized in that the cavity 3 is provided with a prefabricated reinforcement 18 . As shown in Figure 19, the hollow carcass 1 is formed by surrounding the outer wall 2, and the inside is a cavity 3. The lower bottom 2 of the hollow carcass 1 is the prefabricated board wall 4 and the slurry embryo body 5, which are soft and hard laminated and cemented and solidified. As a result, a vertical groove 15 is also provided on the side outer wall 2 of the hollow carcass 1 , and a prefabricated reinforcement 18 is provided in the cavity 3 .

The present invention is also characterized in that the prefabricated reinforcement 18 is a hollow rod, and the two ports of the hollow rod communicate with the outside of the outer wall 2 to form a connected hole 17 . As shown in Figure 19, the hollow carcass 1 is formed by surrounding the outer wall 2 with a cavity 3 inside, and the lower outer wall 2 of the hollow carcass 1 is the prefabricated board wall 4 and the slurry embryo body 5, which are soft and hard laminated and cemented and solidified. As a result, vertical grooves 15 are also provided on the side outer wall 2 of the hollow carcass 1, and prefabricated reinforcements 18 are provided in the cavity 3, and the prefabricated reinforcements 18 are hollow rods, and the hollow rods The two ports communicate with the outside of the outer wall 2 to form a connected hole 17 .

The present invention is also characterized in that the groove 15 provided on the hollow carcass 1 communicates with the connected hole 17 of the hollow rod 18 . As shown in Figure 20, the hollow carcass 1 is formed by surrounding the outer wall 2, inside which is a cavity 3, the lower outer wall 2 of the hollow carcass 1 is the prefabricated board wall 4 and the slurry embryo body 5, which are soft and hard laminated and cemented and solidified. As a result, the upper outer wall 2 of the hollow carcass 1 is also provided with a vertical groove 15 , and the groove 15 is connected to the connected hole 17 of the hollow rod 18 .

The present invention is also characterized in that the outer wall 2 is a tire wall of a flat plate, an arc plate, a folded plate, a corrugated plate or a combination thereof. As shown in Figure 21, the hollow carcass 1 is formed by surrounding the outer wall 2, and the inside is a cavity 3, and the lower bottom 2 of the hollow carcass 1 is the prefabricated board wall 4 and the slurry embryo body 5, which are soft and hard laminated and solidified. Into, its described side wall 2 is an arc plate outer wall.

The present invention is also characterized in that the outer wall 2 of the hollow carcass 1 is provided with at least one movable and detachable connecting cover 19 , or the reinforcement 6 is exposed on the cover 19 . As shown in Figure 22, the hollow carcass 1 is formed by surrounding the outer wall 2, and the inside is a cavity 3, and the lower bottom 2 of the hollow carcass 1 is the prefabricated board wall 4 and the slurry embryo body 5, which are soft and hard laminated and solidified. In this way, the upper outer wall 2 of the hollow carcass 1 is provided with a movable detachable connecting cover 19 .

The present invention is also characterized in that the connecting cover plate 19 is provided with a connecting piece 20 that matches the hollow carcass 1 . As shown in Figure 23, the hollow carcass 1 is formed by the outer wall 2, and the cavity 3 is inside. The lower bottom 2 of the hollow carcass 1 is the prefabricated board wall 4 and the slurry embryo body 5, which are soft and hard laminated and hardened. As a result, the connecting cover plate 19 is provided with a connecting piece 20 that matches with the hollow carcass 1 .

The present invention is also characterized in that a bottom plate 21 is provided under the support feet 7 on the bottom surface of the hollow carcass 1 . As shown in Figure 24, the hollow carcass 1 is formed by surrounding the outer wall 2, and there is a cavity 3 inside. The side outer wall 2 of the hollow carcass 1 has a wall body that is a prefabricated board wall 4 and a slurry embryo body 5 that are soft and hard laminated. It is formed by cementing and hardening, and a bottom plate 21 connected with the supporting feet 7 as a whole is arranged under the supporting feet 7 on the bottom surface.

The present invention is also characterized in that the hollow carcass 1 is provided with at least one of a junction box 22 , a wire duct 23 , an air duct 24 or a water duct 25 . As shown in Figure 25, the hollow carcass 1 is formed by surrounding the outer wall 2, and the inside is a cavity 3. There is a wall body in the side outer wall 2 of the hollow carcass 1. The prefabricated board wall 4 and the slurry embryo body 5 are soft and hard laminated. It is formed by cementing and hardening, and the outer wall 2 is a hollow carcass 1 on which a junction box 22 and an electrical conduit 23 are arranged. As shown in Figure 26, the hollow carcass 1 is formed by surrounding the outer wall 2, and there is a cavity 3 inside. The side outer wall 2 of the hollow carcass 1 has a wall body, which is a prefabricated board wall 4 and a slurry embryo body 5, which are soft and hard laminated. It is formed by cementing and hardening, and the outer wall 2 is a hollow carcass 1 on which air pipes 24 and water pipes 25 are arranged.

The present invention is also characterized in that the cavities 3 of the hollow carcass 1 are partially or completely filled with lightweight materials 26 . As shown in Figure 27, the hollow carcass 1 is formed by surrounding the outer wall 2, and there is a cavity 3 inside. The side outer wall 2 of the hollow carcass 1 has a wall body that is a prefabricated board wall 4 and a slurry embryo body 5 that are soft and hard laminated. The cavity 3 of the hollow carcass 1 is partially filled with a light material 26 along the wall, and the light material 26 shown in the figure is expanded perlite.

The present invention is also characterized in that the hollow carcass 1 is provided with a boss module 27 . As shown in Figure 28, the hollow carcass 1 is formed by surrounding the outer wall 2, and the inside is a cavity 3. The lower bottom 2 of the hollow carcass 1 is the prefabricated board wall 4 and the slurry embryo body 5, which are soft and hard laminated and cemented and solidified. As a result, the hollow carcass 1 is provided with a boss module 27 .

The present invention is also characterized in that the boss module 27 is fixed on the hollow carcass 1 by bonding, welding, riveting, socket, ferrule, or bolt connection, or the boss module 27 and the hollow carcass 1 are integrally formed. Overall. As shown in Figure 28, the hollow carcass 1 is formed by surrounding the outer wall 2, and the inside is a cavity 3. The lower bottom 2 of the hollow carcass 1 is the prefabricated board wall 4 and the slurry embryo body 5, which are soft and hard laminated and cemented and solidified. The boss module 27 is a hollow module riveted and fixed on the hollow carcass 1 .

The present invention is also characterized in that the outer wall 2 of the hollow carcass 1 is provided with a laminated layer of strip-shaped or plate-shaped lightweight material 26 . As shown in Figure 29, the hollow carcass 1 is formed by surrounding the outer wall 2, and the inside is a cavity 3, and the lower bottom 2 of the hollow carcass 1 is the prefabricated board wall 4 and the slurry embryo body 5, which are soft and hard laminated and solidified. In this way, the upper outer wall 2 of the hollow carcass 1 is provided with a superimposed layer of a plate-shaped light material 26, and the light material 26 shown in the figure is expanded perlite.

The present invention is also characterized in that more than two hollow carcass 1 can be joined together to form a unidirectional, bidirectional or multidirectional tire mold assembly. As shown in Figure 30, the hollow carcass 1 is formed by surrounding the outer wall 2 with a cavity 3 inside. The upper outer wall 2 of the hollow carcass 1 is the prefabricated board wall 4 and the slurry embryo body 5, which are soft and hard laminated and solidified. In this way, the two hollow carcass 1 are connected together to form a unidirectional tire mold assembly, and the two carcasses are connected by a connecting piece 20 .

The present invention is also characterized in that a group of opposite outer walls 3 of the hollow carcass 1 are parallel. As shown in Figure 3, the hollow carcass 1 is formed by surrounding the outer wall 2, and the inside is a cavity 3, and the upper outer wall 2 of the hollow carcass 1 has a wall body that is a prefabricated board wall 4 and a slurry embryo body 5 that are soft and hard laminated. It is formed by bonding and hardening, and the upper and lower groups of the hollow carcass 1 are parallel to the two outer walls 3 .

The present invention is also characterized in that the two sets of opposite outer walls 3 of the hollow carcass 1 are parallel to each other. As shown in Figure 4, the hollow carcass 1 is formed by surrounding the outer wall 2, and the inside thereof is a cavity 3, and the outer wall 2 on one side of the hollow carcass 1 is a prefabricated board wall 4 and a slurry embryo body 5, which are soft and hard laminated and cemented. Formed, the two sets of opposite outer walls 3 of the hollow carcass 1 are parallel to each other.

The present invention is also characterized in that the three sets of opposite outer walls 3 of the hollow carcass 1 are parallel to each other. As shown in Fig. 5, the hollow carcass 1 is formed by surrounding the outer wall 2, inside of which is a cavity 3, and the side outer wall 2 of the hollow carcass 1 is a prefabricated board wall 4 and a slurry embryo body 5, which are soft and hard laminated and hardened. In this way, the three sets of opposite outer walls 3 of the hollow carcass 1 are parallel to each other.

The present invention is also characterized in that the hollow carcass 1 is provided with a connecting piece 20 extending out. As shown in Figure 31, the hollow carcass 1 is formed by surrounding the outer wall 2, and the inside is a cavity 3. The upper outer wall 2 of the hollow carcass 1 is the prefabricated board wall 4 and the slurry embryo body 5, which are soft and hard laminated and cemented. As a result, the hollow carcass 1 is provided with a connecting piece 20 protruding out, and the connecting piece 20 shown in the figure is a connecting ferrule.

When the present invention is implemented, the hollow carcass 1 with one side opening can be made earlier, then, with the opening facing upwards, the prefabricated board wall 4 is suspended or placed on the opening surface, and the prefabricated board wall 4 is blocked with a slurry embryo body 5, After the slurry is hardened, it is cured to a specified age, and the hollow matrix for filling cast-in-place concrete can be obtained.

Claims (10)

1. cast-in-situ reinforced concrete or prestressed reinforced concrete hollow slab, comprise steel bar concrete, hollow matrix (1), hollow matrix (1) is wrapped up in and is contained in the cast-in-situ reinforced concrete, hollow matrix (1) is surrounded by outer wall (2) and forms, it in it cavity (3), the top or the bottom outer wall (2) that it is characterized in that hollow matrix (1) form firmly admittedly for prefabricated wooden partition (4) and the superimposed gluing of slip idiosome (5) soft or hard, be provided with reinforce (6) in the overlapping layers of slip idiosome (5), reinforce (6) exposes outside the hollow matrix (1), no reinforcement (18) in the cavity (3).

2. a kind of cast-in-situ reinforced concrete according to claim 1 or prestressed reinforced concrete hollow slab is characterized in that described hollow matrix (1) is a polyhedron.

3. a kind of cast-in-situ reinforced concrete according to claim 1 or prestressed reinforced concrete hollow slab is characterized in that described hollow matrix (1) is a hexahedron; Perhaps the outer wall (2) of the face toward each other of one side at least of hexahedron hollow matrix (1) forms firmly admittedly by prefabricated wooden partition (4) and the superimposed gluing of slip idiosome (5) soft or hard.

4. a kind of cast-in-situ reinforced concrete according to claim 1 or prestressed reinforced concrete hollow slab, it is characterized in that described hollow matrix (1) is provided with spike (7), perhaps be provided with reinforce (6) in the spike (7), perhaps reinforce (6) stretches into the interior anchoring of outer wall (2); Perhaps spike (7) is a fixing feet; Perhaps spike (7) is movable pin; Perhaps spike (7) is the split pin; Perhaps spike (7) is mortar hard pin, concrete pin or plastic foot; Perhaps hollow matrix (1) is or/and spike (7) is provided with the anti-floating part (8) of fixing or split; Perhaps the side outer wall (2) of hollow matrix (1) is provided with the rib spacing limit for width part (9) of encorbelmenting; Perhaps the outer wall (2) of hollow matrix (1) is provided with the filler strip (10) or the cushion block (11) of reinforcing bar.

5. according to described a kind of cast-in-situ reinforced concrete of arbitrary claim in the claim 1 to 4 or prestressed reinforced concrete hollow slab, it is characterized in that being provided with in the described outer wall (2) reinforce (6); Perhaps the reinforce (6) in the outer wall (2) is connected with each other; Perhaps reinforce (6) exposes outside the hollow matrix (1).

6. according to described a kind of cast-in-situ reinforced concrete of arbitrary claim in the claim 1 to 4 or prestressed reinforced concrete hollow slab, it is characterized in that also being provided with on the described hollow matrix (1) at least one in arc angle (12), chamfering (13), inner corner trim (14), groove (15), pit (16), the hole (17); Perhaps at least one face of the outer wall (2) of hollow matrix (1) is provided with the groove (15) of cross or groined type or M shape.

7. according to described a kind of cast-in-situ reinforced concrete of arbitrary claim in the claim 1 to 4 or prestressed reinforced concrete hollow slab, it is characterized in that the tyre sidewall of described outer wall (2) for flat board, arc plate, flap, corrugated sheet or its combination; Perhaps the outer wall (2) of hollow matrix (1) is provided with the detachable connection cover plate (19) of at least one activity, perhaps has reinforce (6) to expose on the cover plate (19); Perhaps connecting cover plate (19) is provided with and is connected the connector (20) that coincide with hollow matrix (1).

8. according to described a kind of cast-in-situ reinforced concrete of arbitrary claim in the claim 1 to 4 or prestressed reinforced concrete hollow slab, it is characterized in that the spike (7) on the bottom surface of described hollow matrix (1) is arranged with base plate (21); Perhaps hollow matrix (1) is provided with at least one in junction box (22), conduit (23), airduct (24) or the water pipe (25); Perhaps local or all be filled with light material (26) in the cavity (3) of hollow matrix (1); Perhaps hollow matrix (1) is provided with boss module (27); Perhaps boss module (27) is connected and fixed on the hollow matrix (1) for bonding, welding, riveted joint, socket joint, cutting ferrule, bolt, perhaps the integral body that is formed in one of boss module (27) and hollow matrix (1).

9. according to described a kind of cast-in-situ reinforced concrete of arbitrary claim in the claim 1 to 4 or prestressed reinforced concrete hollow slab, the outer wall (2) that it is characterized in that described hollow matrix (1) is provided with the overlapping layers of strip or tabular light material (26); Perhaps plural hollow matrix (1) but disjunctor is formed unidirectional, two-way or multidirectional core assembly; Perhaps one group of relative two sides outer wall (3) of hollow matrix (1) is parallel.

10. according to described a kind of cast-in-situ reinforced concrete of arbitrary claim in the claim 1 to 4 or prestressed reinforced concrete hollow slab, it is characterized in that two groups of relative two sides outer walls (3) of described hollow matrix (1) are parallel separately; Perhaps three groups of relative two sides outer walls (3) of hollow matrix (1) are parallel separately; Perhaps hollow matrix (1) is provided with connector (20) and stretches out.

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