CN212670967U - MF heat-preservation sound-insulation assembled concrete laminated slab - Google Patents
MF heat-preservation sound-insulation assembled concrete laminated slab Download PDFInfo
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- CN212670967U CN212670967U CN202020753262.6U CN202020753262U CN212670967U CN 212670967 U CN212670967 U CN 212670967U CN 202020753262 U CN202020753262 U CN 202020753262U CN 212670967 U CN212670967 U CN 212670967U
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Abstract
The invention discloses an MF heat-insulating and sound-insulating fabricated concrete laminated slab, which comprises an MF heat-insulating slab, a prefabricated truss reinforced concrete laminated slab and MF special accessories, wherein the MF heat-insulating slab is a prefabricated truss reinforced concrete laminated slab; the MF insulation board comprises a plurality of small boards which are horizontally arranged, the small boards are connected through H-shaped steel channels, the MF insulation board is arranged below the prefabricated truss reinforced concrete composite slab, a tapping anchor bolt vertically penetrates through the MF insulation board from the lower side to be connected with a bottom plate of the prefabricated truss reinforced concrete composite slab, and the problems of heat preservation, sound insulation and fire prevention of the prefabricated composite slab are solved. The MF heat-insulation board extends out of the bottom of the prefabricated laminated slab to enter the post-pouring belt, secondary formwork erecting of the post-pouring belt is avoided, board seam leakage is eliminated, the problem that installation efficiency is affected is avoided, connection strength and energy consumption capability after installation are combined with the advantages of ultrahigh-performance materials and prefabrication technology, material performance is brought into play, and the influence of manufacturing cost is reduced.
Description
Technical Field
The invention belongs to the field of constructional engineering, and particularly relates to an MF heat-insulating sound-insulating fabricated concrete laminated slab.
Background
With the rapid development of the construction industry in China, the nation actively promotes the transformation and the upgrade of the construction industry, and the fabricated building is rapidly developed with good economic, environmental and social benefits. The proportion of building energy consumption in total energy consumption is increased from 10% in 1978 to 38% at present, and the vigorous development of energy-saving buildings is a consensus. With the continuous improvement of the requirements on energy conservation and environmental protection of buildings, the heat preservation technology of building structures is increasingly strengthened, particularly, the heat preservation and sound insulation technology of floor slabs is rapidly developed and becomes an important building energy conservation technology in China.
In the main design specifications of the fabricated concrete structure in China, the concepts of green buildings and sponge cities are compulsorily stipulated. All require heat preservation, fire prevention, sound insulation and other functions to be embodied in the design of the prefabricated part. At present, in engineering practice, the heat preservation and sound insulation technology of a building maintenance structure only stays on an outer wall system, and the most extensive prefabricated composite floor slab still performs secondary heat preservation and sound insulation.
The bottom ribs of at least one direction of the composite slab extend into the laminated layers of the peripheral members to improve the connecting performance and the integrity of the prefabricated composite slab and the structure. However, a large amount of steel bars are usually reserved on the peripheral components of the prefabricated composite slab, and bottom ribs extending out of the side edges of the prefabricated composite slab interfere with the peripheral components in the installation and in-place process of the prefabricated composite slab, so that the installation difficulty of the bottom die of the post-cast strip of the prefabricated composite slab is greatly improved, the construction efficiency is reduced, and the utilization efficiency is low.
Along with the progress of building material technology, MF (mineral wool) insulation boards are greatly developed in the aspect of novel materials, are all called as MF insulation disassembly-free templates, are made of mineral wool and vitrified micro bubbles serving as main raw materials, added with functional additives and processed by a special process, have excellent performances such as ultrahigh strength, high toughness, high impermeability, high corrosion resistance and the like, and are expected to become basic materials for the construction of next-generation infrastructure. The cast-in-place concrete formwork has the function of permanently avoiding formwork disassembly in the construction of a cast-in-place concrete structure (post-cast strip), and is a multifunctional integrated building product integrating the four functions of formwork, heat preservation, sound insulation and fire prevention. However, because the laminated board post-cast strip adopts a secondary formwork, the cast-in-place operation is relatively less. The initial cost of thermal, acoustic and fire protection in floors is extremely high and is less used in fabricated building structures.
Due to the characteristics of the MF insulation board and the advantages of the assembled concrete building structure template, the MF insulation board and the assembled concrete building structure template can be combined to exert the advantages of the MF insulation board and the assembled concrete building structure template to the greatest extent, and related disadvantages are avoided. The demand of combining the heat preservation of the precast concrete laminated bottom plate with the formwork and improving the construction efficiency can be effectively solved through the mode of increasing and combining the MF heat preservation plate and the precast laminated slab, and the invention is provided for the demand.
Disclosure of Invention
In order to solve the problems, the invention discloses an MF heat-insulating sound-insulating fabricated concrete composite slab, wherein an MF heat-insulating plate is used at the lower connecting part of the prefabricated concrete composite slab and is glued into a whole body with the prefabricated composite slab through a special connector, and the prefabricated composite slab is connected with a building cast-in-place structure through truss steel bars of the prefabricated composite slab, so that the problems of heat insulation, sound insulation and fire prevention of the prefabricated composite slab are solved. The MF heat-insulation board extends out of the bottom of the prefabricated laminated slab to enter the post-pouring belt, secondary formwork erecting of the post-pouring belt is avoided, board seam leakage is eliminated, the problem that installation efficiency is affected is avoided, connection strength and energy consumption capability after installation are combined with the advantages of ultrahigh-performance materials and prefabrication technology, material performance is brought into play, and the influence of manufacturing cost is reduced.
In order to achieve the purpose, the technical scheme of the invention is as follows:
an MF heat-insulating and sound-insulating fabricated concrete laminated slab comprises an MF heat-insulating plate, a prefabricated truss reinforced concrete laminated slab and MF special accessories; the MF special fittings comprise H-shaped channels and self-tapping anchor bolts, the MF heat-insulating plates comprise a plurality of small plates which are horizontally arranged, the small plates are connected through the H-shaped channels (the side faces of the small plates are clamped in grooves of the H-shaped channels), the MF heat-insulating plates are arranged below the prefabricated truss reinforced concrete composite slab, and the self-tapping anchor bolts vertically penetrate through the MF heat-insulating plates from the lower side to be connected with a bottom plate of the prefabricated truss reinforced concrete composite slab.
The prefabricated truss reinforced concrete composite slab is characterized in that a floor slab is divided into two parts along the thickness direction, the bottom part is a prefabricated bottom plate, and the upper part is post-cast with a concrete composite layer. The prefabricated bottom plate with the truss reinforcing steel bars arranged at the bottom is used as a part of a floor slab, is used as a template of a post-cast concrete superposed layer to bear load in the construction stage, and forms an integral superposed concrete member with the post-cast concrete layer.
The MF special fittings comprise H-shaped steel, self-tapping anchor bolts, corner grooves and dovetail nails. Long slotted holes parallel to the length direction are reserved on one side of the H-shaped steel, long slotted holes parallel to the length direction are reserved on the other side of the H-shaped steel, and the H-shaped steel is embedded and assembled with an MF heat-insulating plate of another laminated slab at the corner for improving formwork supporting operation of two adjacent laminated slabs of a post-cast strip; the MF special fitting penetrates through the MF heat-insulating plate in the vertical direction through a self-tapping anchor bolt and is installed on the front surface of the MF heat-insulating plate and used for anchoring the FM heat-insulating plate and the prefabricated laminated plate; the corner groove is used for combining the MF heat-insulation plate at the position of the floor lowering plate with the laminated slab; the dovetail nail is used for supporting and anchoring an MF heat-preservation laminated plate post-cast strip.
Preferably, the MF heat-insulation board has detection reports of heat insulation, sound insulation, fire prevention and the like, and the thickness of the MF heat-insulation board is consistent with the preset thickness of the prefabricated bottom board. The material mixing size meets the drawing requirements of the prefabricated laminated slab.
Preferably, the self-tapping anchor bolt special for MF can be set to be a flat head; the anchoring length of the self-tapping anchor bolt is required to be arranged after the drawing test is finished, one end of the self-tapping anchor bolt is anchored into the MF plate, the other end of the self-tapping anchor bolt is bound on the bottom distributed ribs, and the binding capacity of the prefabricated MF insulation board and common concrete is further improved.
Preferably, the surface of the H-shaped channel steel connecting piece is plated with an anticorrosive layer, so that the durability is improved; according to the construction scheme on site, the precast concrete bottom plate can be installed after being hung in a building structure.
Preferably, the flatness of the bottom die of the prefabricated truss reinforced concrete composite slab is not more than 2mm, and the thickness of the MF heat preservation plate is reserved around the side die, so that enough support strength is reserved between the pile layers in the stacking and transporting process.
A manufacturing and building method of an MF heat-insulating and sound-insulating fabricated concrete laminated slab comprises the following steps:
(1) firstly, purchasing MF heat-insulating plates, wherein various detection values meet the manufacturing quality of heat insulation, sound insulation and fire prevention, and cutting the MF heat-insulating plates into a plurality of small plates according to the specification and the size of the prefabricated truss reinforced concrete laminated slab;
(2) according to the specification and the size of the prefabricated truss reinforced concrete composite slab, a mold is configured, a side mold is arranged on a bench mold of a conventional prefabricated composite slab, the thickness (20 mm +60 mm) of a 20mm MF (multi-frequency) heat preservation plate is increased at the bottom of the side mold, the side mold is embedded into a space with 20mm as a concrete wrap angle, the side mold is fixed close to the side mold at the other end through a positioning bolt according to a certain distance, and the side mold and the bench mold are pasted by a grout stopping strip to stop grout.
(3) Anchoring the self-tapping anchor bolt special for MF into the MF heat-insulating small plate, releasing the anchor bolt before anchoring, positioning, drilling an anchor bolt flat head depth at the bottom by adopting a portable drill bit, wherein the anchored self-tapping anchor bolt special for MF does not exceed the bottom surface of the MF heat-insulating plate, so that the anchor bolt flat head is tightly attached to the bench formwork, and a gap between the MF heat-insulating small plate and the bench formwork due to a protruding part of the anchor bolt flat head is avoided, and slurry leakage is formed;
(4) assembling and combining a plurality of MF heat-insulating small plates by adopting H-shaped grooves according to the drawing size of a component, splicing and flatly laying a combined body of the MF heat-insulating plates and a laminated slab into a mould, binding reinforcing steel bars at the bottom of the laminated slab on the combined body of the MF heat-insulating plates, binding truss reinforcing steel bar meshes, and binding and fixing exposed thread teeth parts of the MF special self-tapping anchor bolts and the bottom reinforcing steel bars by adopting binding wires to form a reliable whole;
(5) if an embedded part or a hole reinforcing steel bar exists, checking a drawing, and pouring concrete after the acceptance of a hidden project is finished; automatically vibrating on a vibration platform, and roughening the top surface;
(6) and finally, entering a curing kiln for steam curing.
The invention has the beneficial effects that:
(1) the invention increases the heat preservation, sound insulation and fire prevention functions of the prefabricated truss reinforced concrete composite slab, cancels the secondary special heat preservation and sound insulation operation, avoids the problem of poor fitting between the heat preservation slab and the concrete in the installation process and the operation interference between the mutual work types, improves the construction efficiency, reduces the labor cost and is beneficial to the popularization and application of the fabricated concrete structure.
(2) The invention adopts the MF special fittings, has flexible installation and adjustable error, reduces the precision requirements of the prefabricated laminated slab manufacturing and the MF insulation board installation, further reduces the production cost and improves the construction efficiency; moreover, the self-tapping anchor bolt special for MF is anchored, so that the seismic resistance and energy consumption are improved.
(3) The invention realizes the one-time combination of all functions in a factory through a prefabricating technology, and solves the problems of low viscosity part, poor precision and high construction difficulty. The manufacturing cost is reduced, and the popularization and the application of the MF insulation board material are facilitated.
(4) The invention eliminates the problems of poor flatness, slurry leakage and the like of the post-cast strip through the template effect of the overhanging part. And a post-cast strip secondary die matching process is cancelled, so that the construction consumption of the template is saved, and the popularization and the application of the fabricated concrete structure are facilitated.
Drawings
FIG. 1 is a three-dimensional side view of an MF heat-insulating, sound-insulating and fire-proof fabricated concrete composite slab of the present invention;
FIG. 2 is a three-dimensional schematic view of an MF heat-insulating, sound-insulating and fireproof fabricated concrete composite slab of the present invention;
FIG. 3 is a top view of the assembled bench formwork and side formwork of the present invention;
FIG. 4 is a schematic side view of a post-cast strip bottom form assembly according to the present invention;
FIG. 5 is a three-dimensional top view of the post-cast strip bottom form assembly of the present invention;
fig. 6 is a diagram of an MF specific assembly according to the present invention.
Detailed Description
The present invention will be further illustrated with reference to the accompanying drawings and specific embodiments, which are to be understood as merely illustrative of the invention and not as limiting the scope of the invention. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
As shown in the figure, the MF heat-insulating and sound-insulating fabricated concrete laminated slab provided by the invention is prepared by firstly cutting and assembling the MF heat-insulating plate 1 in a factory and then anchoring the self-tapping anchor bolt from the reverse side. The distance between the self-tapping anchor bolts is less than or equal to 500 mm; the depth of the concrete extending into the concrete is more than or equal to 40 mm; the small MF heat-insulation boards are assembled by adopting H-shaped steel 4, a drill bit at the position of a self-tapping anchor bolt at the bottom of the MF heat-insulation board 1 is used for reaming, and a flat head of the self-tapping anchor bolt is flat with the bottom surface.
According to the specification and the size of a precast concrete bottom plate, a side formwork is arranged on a conventional precast laminated slab bench formwork, an MF heat-insulation plate assembly is fixed close to the side formwork at a certain interval, a grout stopping strip is adhered to the side formwork, and a release agent is coated on the side formwork.
Assembling the MF heat-insulation plates at the preset positions, and binding steel bars at the bottoms of the laminated slabs; installing truss steel bars 3; and laying a protective layer cushion block.
The side die is fixed on the bench die by adopting the magnetic boxes, the position of the side die is adjusted forwards and backwards, and after the side die reaches a proper position, all the magnetic boxes are fastened.
The prefabricated truss reinforced concrete composite slab 2 is anchored through a self-tapping anchor bolt and is poured with concrete after being concealed and accepted, and the folding and galling of the top surface of the MF heat-insulation and sound-insulation assembled concrete composite slab are carried out during initial setting of the concrete.
The technical means disclosed in the invention scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features.
Claims (7)
1. The utility model provides a MF keeps warm and gives sound insulation assembled concrete superimposed sheet which characterized in that: the composite board comprises an MF heat-insulation board, a prefabricated truss reinforced concrete laminated slab and an MF special fitting; the MF special fittings comprise H-shaped channels and self-tapping anchor bolts, the MF heat-insulating plates comprise a plurality of small plates which are horizontally arranged, the small plates are connected through the H-shaped channels, the MF heat-insulating plates are arranged below the prefabricated truss reinforced concrete composite slab, and the self-tapping anchor bolts penetrate through the MF heat-insulating plates from the lower part to be vertically connected with a bottom plate of the prefabricated truss reinforced concrete composite slab.
2. An MF heat-insulating and sound-insulating fabricated concrete laminated slab as claimed in claim 1, wherein: the prefabricated truss reinforced concrete composite slab is characterized in that a floor slab is divided into two parts along the thickness direction, the bottom part is a prefabricated bottom plate, and the upper part is post-cast with a concrete composite layer.
3. An MF heat-insulating and sound-insulating fabricated concrete laminated slab as claimed in claim 1, wherein: the MF special fittings comprise H-shaped steel, self-tapping anchor bolts, corner grooves and dovetail nails; long slotted holes parallel to the length direction are reserved on one side of the H-shaped steel, long slotted holes parallel to the length direction are reserved on the other side of the H-shaped steel, and the H-shaped steel is embedded and assembled with an MF heat-insulating plate of another laminated slab at the corner for improving formwork supporting operation of two adjacent laminated slabs of a post-cast strip; the self-tapping anchor bolt penetrates through the MF heat-insulation plate in the vertical direction and is installed on the front surface of the MF heat-insulation plate and used for anchoring the FM heat-insulation plate and the prefabricated laminated slab; the corner groove is used for combining the MF heat-insulation plate at the position of the floor lowering plate with the laminated slab; the dovetail nail is used for supporting and anchoring an MF heat-preservation laminated plate post-cast strip.
4. An MF heat-insulating and sound-insulating fabricated concrete laminated slab as claimed in claim 1, wherein: the flatness of the bottom die of the prefabricated truss reinforced concrete composite slab is less than or equal to 2mm, and the thickness of the reserved MF heat-insulating plate is reserved on the periphery of the side die.
5. An MF heat-insulating and sound-insulating fabricated concrete laminated slab as claimed in claim 2, wherein: the thickness of the MF heat-insulating plate is consistent with the reserved thickness of the prefabricated bottom plate.
6. An MF heat-insulating and sound-insulating fabricated concrete laminated slab as claimed in claim 1, wherein: the self-tapping anchor bolt is a flat-head bolt; one end of the self-tapping anchor bolt is anchored into the MF heat-insulating plate, and the other end of the self-tapping anchor bolt is bound on the bottom distribution ribs.
7. An MF heat-insulating and sound-insulating fabricated concrete laminated slab as claimed in claim 1, wherein: and the surface of the H-shaped channel steel connecting piece is plated with an anticorrosive coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020753262.6U CN212670967U (en) | 2020-05-09 | 2020-05-09 | MF heat-preservation sound-insulation assembled concrete laminated slab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020753262.6U CN212670967U (en) | 2020-05-09 | 2020-05-09 | MF heat-preservation sound-insulation assembled concrete laminated slab |
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| CN212670967U true CN212670967U (en) | 2021-03-09 |
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| CN202020753262.6U Active CN212670967U (en) | 2020-05-09 | 2020-05-09 | MF heat-preservation sound-insulation assembled concrete laminated slab |
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