Precast concrete sandwiched heat insulation board and preparation method thereof
Technical field
The present invention relates to building fields, and in particular to a kind of precast concrete sandwiched heat insulation board and preparation method thereof.
Background technique
Concrete prefabricated sandwiched heat insulation board is to pass through dedicated connection by internal lobe concrete slab, insulating layer and siphonal lobe concrete slab
Part or D light fashioned iron screen frame connection composition, because its height it is integrated, plant produced quality preferably, can for scene save
About material, save labour, save the construction period, protect the reasons such as site operation environment, make it on assembled architecture
To being widely used.But since China's assembled architecture is started to walk evening, hinder the development of prefabricated composite energy saving board.China at this stage
The prefabricated composite energy saving board used has mainly been introduced external sandwich technique and has been improved on its basis, due to being to introduce
Technology is not fully suitable for the house in China, specifically suffers from the drawback that (1) existing connector is vertically embedded in insulating layer
In, two sides are poured concrete, and two sides concrete and insulating layer are combined with each other by connector pulling force, and production and processing in this way is fast
Victory is convenient, but connector is low with interior outside concrete slab contact surface, and each connector onrelevant, reduces wallboard in this way
Overall structure connectivity and performance, seriously affect the stability of building structure, there is also security risks.(2) steel wire knot is used
The rack thermal coefficient of structure is higher, influences whole thermal insulation property.When post-production, it is also necessary to intert steel wire inside insulation board
Welding, production efficiency is low, and safety coefficient is low.(3) connection type of existing precast concrete sandwiched heat insulation board has sleeve grouting to connect
It connects and is bolted;Sleeve grouting connection needs to be perfused grouting material, just can be removably mounted after solidification, speed, which is slower than, to be bolted;Spiral shell
It tethers to connect and needs for bolt collar to be embedded in concrete, bolt collar influences what plate was connect with plate with entire plate connectivity difference
Overall performance.
The above problem seriously hinders prefabricated concrete sandwich insulation board scale application in practice.
Summary of the invention
The present invention is in order to solve the above technical problems, more preferable, the assembly that provides a kind of switching performance, mechanical property and thermal insulation property
Reliably, convenient and fast precast concrete sandwiched heat insulation board is produced.
The invention is realized by the following technical scheme, precast concrete sandwiched heat insulation board, around rack and rack
Connecting plate, the upper and lower steel mesh for being respectively equipped with steel wire and being staggered to form of rack, which is characterized in that if the rack inner space is equipped with
Solid fixed rack connector, the rack connector generally " several " font, rack connector include the connection positioned at both ends
The fixed part of upper and lower steel wire is connected with the inclined connecting rod in space between fixed part, and the fixed part is vertical with steel wire to be fixed;It is described
Connecting rod is located in organic heat-insulating layer, and the fixed position is in the concrete layer of two sides;The surrounding of the rack is fixedly connected with pre-
Set the connecting plate of nut.
In order to improve thermal insulation property, bridge cut-off is equipped in the middle part of the connecting rod, bridge cut-off is that nonmetallic connecting rod connects by material.
It is described nonmetallic for fibre reinforced plastics in order to enhance bonding strength.
Preferably, the connecting plate is angle bar, if the angle bar side vertical with joint face is equipped with dry hole, the lower section of drilling
Fixture nut.
Preferably, the angle bar is located in the groove of concrete layer formation.
In order to enhance integral strength, the two sides of the rack are respectively fixed with anti-crack net, anti-crack net using steel wire or
Glass fiber net.
A kind of preparation method preparing above-mentioned precast concrete sandwiched heat insulation board, includes the following steps,
(1) according to prefabricated sandwiched heat insulation board and light-duty steel wire net rack Architectural Design Requirements, steel wire and rack connector are welded into
Three-dimensional steel wire net rack, the fixed part of three-dimensional steel wire net rack connector are located in perpendicular with upper and lower steel wire respectively;Wherein steel wire
Using low-carbon cold drawn wire, diameter 3-10mm;
(2) angle bar is welded around three-dimensional steel wire net rack, angle bar periphery drills by design requirement, and welded nut;The side of angle steel
Long 20-100mm;
(3) rack being welded is put into injection mold, injects organic insulation material, form the heat preservation of D light fashioned iron screen frame
Plate;Organic insulation material is one kind of XPS, EPS or PU, with a thickness of 50-200mm;
(4) it is put into anti-crack net in mold bottom, and D light fashioned iron screen frame insulation board is laid flat and is poured in mold, in three-dimensional
The side of light-duty steel wire net rack thermal-insulating board is poured pea gravel concreten;Concrete strength >=C20, thickness 30-110mm;
(5) after concrete reaches specified intensity, it is laid with anti-crack net again, pours other side concrete, then whole maintenance, i.e.,
Prefabricated sandwiched heat insulation board can be obtained.
In order to increase the bonding strength of concrete, in the step (3), the thickness of organic insulation material is less than three-dimensional steel wire
The thickness of rack.
In order to simplify fabrication processing, the injection mold of the organic insulation material is located at the company of fixed part and interconnecting piece
Place is met, keeps organic insulation material thickness equal with interconnecting piece height.
The invention has the beneficial effects that
(1) use three-dimensional steel wire net rack for skeleton, insulating layer and two sides concrete layer switching performance are more preferable, and then it is whole to improve plate
Body performance;
(2) rack connector is handled using fibre reinforced plastics connection, is formed bridge cut-off connection, is effectively increased plate integral heat insulation
Performance;
(3) moulding of D light fashioned iron screen frame is special, it can be achieved that organic insulation material one-pass molding, produces more efficient and convenient;
(4) precast concrete sandwiched heat insulation board surrounding angle bar flanging improves the anti-folding and shock resistance of plate;
(5) connector nut is connected by being welded on angle bar with entire three-dimensional steel wire net rack, overall structure stress between plate and plate,
It connects stronger reliable.
Detailed description of the invention
Fig. 1 the application insulating plate structure schematic diagram;
Fig. 2 the application grid structure schematic diagram;
Fig. 3 grid structure enlarged diagram;
Fig. 4 rack connecting-piece structure schematic diagram;
Fig. 5 insulation board the schematic diagram of the section structure;
Another structural schematic diagram of Fig. 6 rack connector;
1. angle bar in figure, 2. drillings, 3. concrete layers, 4. racks, 41. steel wires, 5. insulating layers, 6. nuts, 7. anti-crack nets, 8. nets
Frame connector, 9. connecting rods.
Specific embodiment
The application is described further with reference to the accompanying drawing.
Embodiment one
As shown in Figures 1 to 4, the present invention provides a kind of precast concrete sandwiched heat insulation board, including in the middle part of insulation board rack 4 and
Connecting plate around rack.The wherein upper and lower steel mesh for being respectively equipped with steel wire 4 and being staggered to form of rack, if rack inner space is equipped with
Solid fixed rack connector 8.As shown in figure 4, rack connector generally " several " font, wherein rack connector 8 includes position
The fixed part of steel wire above and below the connection at both ends, as shown, the upper and lower sides point for being located at rack connector are friendly perpendicular to steel by house
The fixed part of silk, fixed part is U-shaped structure, and the inclined connecting rod 9 in space is connected between upper and lower fixed part, and connecting rod connection is solid up and down
Determine portion, plays a supporting role.When rack connector and when upper and lower fixation with steel wire, fixed part respectively with fixation with steel wire, due to fixation
Portion is respectively positioned in perpendicular, therefore connect the rack knot to be formed and be parallel to each other with top steel wire lower end and lower wire upper end
Structure.
As shown in figure 5, the application rack is located at the inside that connecting plate forms frame, inside is poured organic insulating layer, and net
When pouring, connecting rod is located in organic heat-insulating layer 5 frame, and the vertical steel wire of fixed part, then is located in two sides concrete layer 3, in this way
It is formed connecting rod to fix with insulating layer, vertical component effect connects the structure of two sides concrete layer.Continue as shown in figure 5, due to rack
It is welded and fixed with connecting plate, is located at and realizes connection, have preset nut 6 in the fixed connecting plate of the surrounding of rack.In conjunction with Fig. 1 and figure
Shown in 5, drilling 2 is equipped with above connecting plate, nut is correspondingly arranged at the lower section of connecting plate and is welded and fixed, and forms adjacent company
Fishplate bar has the structure of fixture nut, and when pouring, it is strong which is fixed on the connection that inside substantially increases between insulation board
Degree, and the cumbersome of post-production can be saved, and the fixed form eliminates later period moulding by casting due to being carried out before casting
Afterwards because the influence of the flaws to overall quality such as occurs deforming in welding processing, before casting by risk control.
Preferably, the connecting plate of the application is angle bar 1, if being equipped with drilled dry in the angle bar side vertical with joint face in this way
Hole 2, the side also to drill perpendicular to insulation board, the lower section fixture nut of drilling are only needed when adjacent insulation board split assembly
To be attached two sides nut using steel plate using bolt can be realized being connected and fixed for insulation board.Angle steel side length 20-
100mm, equilateral or inequilateral, thickness 3-100mm.
Therefore, the precast concrete sandwiched heat insulation board of above structure includes the following steps, (1) is according to prefabricated in production
Steel wire and rack connector are welded into three-dimensional steel wire net rack by sandwiched heat insulation board and light-duty steel wire net rack Architectural Design Requirements, and three
The fixed part of dimension steel wire net rack connector is located in perpendicular with upper and lower steel wire respectively;Wherein steel wire uses low-carbon cold drawn steel
Silk, diameter 3-10mm;(2) angle bar is welded around three-dimensional steel wire net rack, angle bar periphery drills by design requirement, and welds spiral shell
It is female;The side length 20-100mm of angle steel;(3) rack being welded is put into injection mold, injects organic insulation material, form three
Tie up light-duty steel wire net rack thermal-insulating board;Organic insulation material is one kind of XPS, EPS or PU, with a thickness of 50-200mm;(4) in mold
Bottom is put into anti-crack net, and D light fashioned iron screen frame insulation board is laid flat and is poured in mold, in D light fashioned iron screen frame
The side of insulation board is poured pea gravel concreten;Concrete strength >=C20, thickness 30-110mm;(5) reach specified strong to concrete
After degree, it is laid with anti-crack net again, using steel wire or glass fiber net, pours other side concrete, then whole maintenance, can obtain
To prefabricated sandwiched heat insulation board.
And in above-mentioned preparation process, in order to enable the bond strength of concrete layer and rack increases, organic insulation material
Thickness is less than the thickness of three-dimensional steel wire net rack, and such concrete layer is contacted with fixed part and connecting rod, and bonding strength increases.And
In order to be further simplified processing flow, insulation layer thickness control is more simple, and the injection mold of organic insulation material, which is located at, to be fixed
The junction in portion and interconnecting piece keeps organic insulation material thickness equal with interconnecting piece height.Angle bar is located at concrete layer formation
In groove.
Embodiment two
As shown in fig. 6, the present embodiment and embodiment one connect to increase the thermal and insulating performance of insulation board entirety in rack
Bridge cut-off is equipped in the middle part of the connecting rod of part, bridge cut-off is that nonmetallic connecting rod connects by material.It is i.e. disconnected in the middle part of the connecting rod of rack connector
It opens, and is attached using non-metallic material, is thermally shielded using the characteristic of nonmetallic heat conductive difference.Since connecting rod is positioned at organic
The inside of insulating layer, manufactured connecting rod nonmetallic in this way and heat insulation layer structure are formed together the structure of more insulation.This reality
It applies in example, for proof strength, this is nonmetallic using fibre reinforced plastics.The preferred fiberglass reinforced plastics of fibre reinforced plastics
With one kind of Basalt fiber reinforced plastic, diameter 5-10mm.
In the description of the present application, term " setting ", " connection " be shall be understood in a broad sense, for example, it may be fixedly connected,
It can be and be detachably connected, or be integrally connected.For the ordinary skill in the art, on being understood with concrete condition
State the concrete meaning of term in this application.The orientation or positional relationship of the instructions such as term " top ", " lower part " is based on attached drawing
Shown in orientation or positional relationship or this application product using when the orientation or positional relationship usually put, merely to
Convenient for describe the application and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore should not be understood as the limitation to the application.