CN211143352U - Steel wire framework heat-insulating prefabricated slab and assembled composite floor slab - Google Patents
Steel wire framework heat-insulating prefabricated slab and assembled composite floor slab Download PDFInfo
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- CN211143352U CN211143352U CN201921789528.6U CN201921789528U CN211143352U CN 211143352 U CN211143352 U CN 211143352U CN 201921789528 U CN201921789528 U CN 201921789528U CN 211143352 U CN211143352 U CN 211143352U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 262
- 239000010959 steel Substances 0.000 title claims abstract description 262
- 239000002131 composite material Substances 0.000 title claims abstract description 15
- 238000009413 insulation Methods 0.000 claims abstract description 46
- 230000003187 abdominal effect Effects 0.000 claims abstract description 43
- 239000004567 concrete Substances 0.000 claims abstract description 43
- 238000004321 preservation Methods 0.000 claims abstract description 35
- 239000011162 core material Substances 0.000 claims abstract description 14
- 239000004575 stone Substances 0.000 claims abstract description 6
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 15
- 238000003466 welding Methods 0.000 claims description 15
- 239000004570 mortar (masonry) Substances 0.000 claims description 11
- 229920006389 polyphenyl polymer Polymers 0.000 claims description 11
- 239000000835 fiber Substances 0.000 claims description 10
- 239000011381 foam concrete Substances 0.000 claims description 9
- 239000011810 insulating material Substances 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 8
- 238000010276 construction Methods 0.000 abstract description 11
- 239000000463 material Substances 0.000 abstract description 9
- 239000011230 binding agent Substances 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 description 7
- 239000012774 insulation material Substances 0.000 description 4
- 239000004793 Polystyrene Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 229920002223 polystyrene Polymers 0.000 description 3
- 210000001015 abdomen Anatomy 0.000 description 2
- 239000011083 cement mortar Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000009417 prefabrication Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/24—Structural elements or technologies for improving thermal insulation
- Y02A30/244—Structural elements or technologies for improving thermal insulation using natural or recycled building materials, e.g. straw, wool, clay or used tires
Abstract
The utility model discloses a main aim at provides a steel wire framework heat preservation prefabricated plate and assembled coincide floor. The steel wire framework heat-preservation precast slab comprises: a fine stone concrete floor; the steel wire framework is formed by binding a steel wire mesh frame and a steel bar truss, and the lower part of the steel wire framework is embedded in the fine aggregate concrete bottom plate; the steel wire mesh frame comprises W-shaped abdominal wires; the heat insulation core material is filled in the steel wire framework; the assembled composite floor slab comprises a steel wire framework heat-insulation precast slab and a cast-in-place concrete composite layer arranged above the steel wire framework heat-insulation precast slab. The technical problem that will solve is through the production efficiency that W type binder can buckle in order to improve steel wire framework heat preservation prefabricated plate fast, and the triangle-shaped stability of W type binder, the triangle-shaped stability that steel bar truss can bear the heavy load, obtains the assembled coincide floor that thermal insulation performance and mechanical properties are good, and its production efficiency is high, the construction is convenient, save material and manpower to be suitable for practicality more.
Description
Technical Field
The utility model belongs to the technical field of building material makes, especially, relate to a steel wire framework heat preservation prefabricated plate and assembled coincide floor.
Background
With the proposal of the concept of 'innovative development, green development and coordinated development', the assembly type building is promoted to be greatly popularized in the domestic building industry, so that the engineering construction is developed to the direction of green environmental protection, energy conservation and material conservation. The assembly type building can realize the industrial production and the mechanical construction of the components, not only can shorten the construction period, but also can greatly reduce the building pollution on the construction site.
However, although the traditional reinforced truss concrete composite floor slab can make up for the defects of slow construction period, poor integrity of the prefabricated floor slab and the like of the cast-in-place floor slab to a certain extent, in practical application, the efficiency of the plate prefabrication of the composite floor slab in the prior art is low, and the heat insulation performance and the mechanical property of the composite floor slab are still difficult to guarantee.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides a steel wire framework heat preservation prefabricated plate and assembled coincide floor, the technical problem that solve can buckle fast through W type binder in order to improve the production efficiency of steel wire framework heat preservation prefabricated plate, and the triangle-shaped stability of W type binder, the triangle-shaped stability that steel bar truss can bear big load, make the utility model discloses a steel wire framework heat preservation prefabricated plate's dead weight reduces, and mechanical properties improves, and heat preservation material board has good heat preservation simultaneously, thermal-insulated, waterproof and compressive property, obtains an assembled coincide floor that thermal insulation performance and mechanical properties are good, and its production efficiency is high, the construction is convenient, save material and manpower to be suitable for the practicality more.
The purpose of the utility model and the technical problem thereof are realized by adopting the following technical scheme. The foundation the utility model provides a steel wire framework heat preservation prefabricated plate, it includes:
a fine stone concrete floor;
the steel wire framework is formed by binding a steel wire mesh frame and a steel bar truss, and the lower part of the steel wire framework is embedded in the fine aggregate concrete bottom plate; the steel wire mesh frame comprises W-shaped abdominal wires;
and the heat-insulating core material is filled in the steel wire framework.
The purpose of the utility model and the technical problem thereof can be further realized by adopting the following technical measures.
Preferably, the steel wire framework heat-insulation precast slab further comprises transverse steel wires and longitudinal steel wires; the longitudinal steel wires are respectively connected with the peak point side of the same W-shaped abdominal wire or respectively connected with the valley point side of the same W-shaped abdominal wire; the W-shaped abdominal wires and the longitudinal steel wires are welded together to form a W-shaped abdominal wire net sheet; the transverse steel wires are connected with the longitudinal steel wires of the W-shaped abdominal wire net pieces arranged in parallel in a spot welding mode to form a steel wire net frame.
Preferably, the steel wire framework heat-insulation precast slab comprises a plurality of steel bar trusses; the steel bar truss is a welded steel bar framework with an inverted V-shaped cross section formed by welding an upper chord steel bar, two lower chord steel bars and web member steel bars on two sides; the steel bar truss is arranged between the two adjacent W-shaped abdominal wire meshes.
Preferably, in the steel wire framework heat-insulation precast slab, the steel wire framework is arranged along the slab length direction according to the W-shaped web and the steel bar truss.
Preferably, in the steel wire framework heat-insulation precast slab, the heat-insulation core material between the two W-shaped web sheets provided with the steel bar truss is formed by pouring polyphenyl particle fiber concrete, foamed concrete or heat-insulation mortar; between two W-shaped web meshes without the steel bar truss, the interior of the precast slab is filled with a heat-insulating material lath, and polyphenyl particle fiber concrete, foamed concrete or heat-insulating mortar is poured at two ends of the precast slab.
Preferably, in the steel wire framework heat-insulation precast slab, in the same steel bar truss, the distance between the upper chord steel bar and the lower chord steel bar in the vertical direction is 70-200mm, the distance between the outer surfaces of the two lower chord steel bars is 60-100mm, and the center distance between the welding points of the web member steel bar and the upper and lower chord steel bars is less than or equal to 200 mm; the distance between the two W-shaped abdominal wire net sheets without the steel bar truss is 50 mm; the distance between the transverse steel wires is 50 mm; the width of the insulating material lath filled in the steel wire framework is 50 mm.
Preferably, the steel wire framework heat-insulation precast slab further comprises end reinforcing steel bars; and the two ends of the steel bar truss are welded and fixed by end reinforcing steel bars.
Preferably, two ends of the steel bar truss respectively extend out of two sides of the steel bar framework heat-insulation precast slab, the length of the extension is 12d, and the extension needs to cross a center line of a beam, wherein d is the diameter of a steel bar.
The purpose of the utility model and the technical problem thereof are realized by adopting the following technical scheme. The foundation the utility model provides an assembled coincide floor, it includes:
the steel wire framework heat-preservation precast slab is prepared according to the steel wire framework;
and the cast-in-place concrete superposed layer is arranged above the steel wire framework heat-insulation precast slab.
The purpose of the utility model and the technical problem thereof can be further realized by adopting the following technical measures.
Preferably, the thickness of the fine aggregate concrete bottom plate is more than or equal to 50 mm; the thickness of the heat-insulating core material is more than or equal to 50 mm; the thickness of the cast-in-place concrete laminated layer is more than or equal to 50 mm.
Preferably, the concrete strength grade of the prefabricated steel wire framework heat-insulation prefabricated slab is greater than or equal to C30.
Borrow by above-mentioned technical scheme, the utility model provides a steel wire framework heat preservation prefabricated plate and assembled coincide floor have following advantage at least:
1. the utility model provides a steel wire framework heat preservation prefabricated plate and assembled coincide floor, adopt W type binder in its steel wire framework, it can buckle fast, can greatly improve the production efficiency of prefabricated plate;
2. the utility model provides a steel wire framework heat preservation prefabricated plate and assembled coincide floor, its steel wire framework includes wire net rack and the steel bar truss that contains W type binder, wherein, W type binder forms a plurality of triangles with horizontal steel wire welding back and makes it have fine triangle-shaped stability; meanwhile, the steel bar truss has triangular stability capable of bearing large load; the steel wire framework heat-preservation precast slab of the utility model can greatly reduce the using amount of steel bars under the condition of the same mechanical property, thereby reducing the dead weight of the floor slab and greatly saving the material cost; on the premise of the same using amount of the steel bars, the mechanical property of the composite floor slab can be greatly improved;
3. the utility model provides a steel wire framework heat preservation prefabricated plate and assembled coincide floor, its heat preservation core adopt the insulation material lath and pour the mode that polyphenyl granule fiber concrete, foaming concrete or heat preservation mortar combined together. The steel wire framework is filled with the heat-insulating material lath as the heat-insulating core material, so that the size of the prefabricated plate is not limited by the size of the integral polystyrene board in the manufacturing process, the cutting of the board is avoided, and the transportation and the operation are convenient; pouring polyphenyl granule concrete, foamed concrete or thermal mortar between two W-shaped abdominal wire meshes of the steel bar truss and between the W-shaped abdominal wire meshes positioned at the two ends of the precast slab so as to improve the thermal insulation performance of the laminated floor slab; meanwhile, the joints of the laminated floor slab are effectively treated, so that cold bridges at the joints are avoided, and the heat insulation performance is improved;
4. the utility model provides a steel wire framework heat preservation prefabricated plate and assembled coincide floor, wherein the prefabrication process of steel wire framework heat preservation prefabricated plate is complete batch production, and the site operation process of prefabricated floor adopts mechanized construction, the breakage rate of floor in transport, work progress is effectually reduced;
5. the utility model provides a steel wire framework heat preservation prefabricated plate and assembled coincide floor, its site operation time only need carry out simple installation, and the work progress is simpler, swift;
6. the utility model provides a steel wire framework heat preservation prefabricated plate and assembled coincide floor, wherein the bottom surface of assembled coincide floor is level and smooth, and the building ceiling needn't plaster the processing, reduces indoor wet operation, accelerates the construction progress, uses manpower sparingly;
7. the utility model provides a steel wire framework heat preservation prefabricated plate and assembled coincide floor, wherein the template of prefabricated plate can be dismantled, but recovery processing reuse, save material.
The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.
Drawings
FIG. 1 is a schematic structural view of a steel wire framework heat-insulating precast slab provided by the utility model;
fig. 2 is a schematic view of an assembled composite floor slab provided by the present invention;
FIG. 3 is a schematic structural diagram of a W-shaped binder wire;
FIG. 4 is a schematic structural view of a W-shaped mesh;
FIG. 5 is a schematic elevation view of a steel wire mesh rack;
FIG. 6 is a schematic top view of a steel wire mesh rack;
fig. 7 is a schematic structural view of a steel bar truss;
FIG. 8 is a schematic structural view in elevation of a steel wire framework;
FIG. 9 is a schematic top view of the wire skeleton;
FIG. 10 is a schematic view of the splicing structure of the steel wire framework heat-insulating precast slab.
Detailed Description
To further illustrate the technical means and effects of the present invention for achieving the predetermined objects, the following detailed description will be given to the embodiments, structures, features and effects of the prefabricated steel-wire framework heat-insulating slab and the assembled laminated floor slab according to the present invention with reference to the accompanying drawings and preferred embodiments.
The utility model provides a steel wire framework heat preservation prefabricated plate 1, as shown in figure 1, figure 3 to figure 9, it includes:
a fine stone concrete floor 13;
the steel wire framework 11 is formed by binding a steel wire mesh frame 111 and a steel bar truss 112, and the lower part of the steel wire framework is embedded in the fine aggregate concrete bottom plate 13; the steel wire mesh frame 111 comprises W-shaped abdominal wires 11122;
and the heat insulation core material 12 is filled in the steel wire framework 11.
When the precast slab is prepared, the steel wire framework 11 is firstly manufactured and positioned, then the fine aggregate concrete is poured, and after the concrete is solidified, the lower part of the steel wire framework 11 is fixed in the fine aggregate concrete bottom plate 13.
Preferably, the steel wire mesh frame 111 further comprises transverse steel wires 1111 and longitudinal steel wires 11121; the longitudinal steel wires 11121 are respectively connected with the peak point side of the same W-shaped abdominal wire 11122 or the valley point side of the same W-shaped abdominal wire 11122; the W-shaped abdominal wire 11122 and the longitudinal steel wire 11121 are welded together to form a W-shaped abdominal wire net sheet 1112; the transverse steel wires 1111 are connected with the longitudinal steel wires 11121 of the W-shaped belly wire net sheets 1112 arranged in parallel in a spot welding mode to form a steel wire mesh frame 111; the peak point and the valley point of the W-shaped abdominal wire 11122 are both continuous arc structures, and the arc is not shown in the drawings for convenience of drawing in the application.
The W-shaped abdominal wire 11122 is formed by bending a steel wire, the peak point of the W shape is on the same straight line, and the valley point is on the same straight line. After the W-shaped abdominal wire 11122 is bent and formed, two longitudinal steel wires 11121 are respectively welded with the peak point side and the valley point side of the same W-shaped abdominal wire 11122 to form a W-shaped abdominal wire net 1112; wherein, the peak point of the W-shaped abdominal wire 11122 is slightly higher than the longitudinal steel wire 11121, and the valley point is slightly lower than the longitudinal steel wire 11121; then the W-shaped abdominal wire mesh sheets 1112 are vertically arranged according to the designed interval, and the longitudinal steel wires 11121 are respectively positioned at the top and the bottom of the W-shaped abdominal wire mesh sheets 1112 at the moment; then, the longitudinal steel wires 11121 at the top of the W-shaped web 1112 are welded together by the transverse steel wires 1111 to form a criss-cross upper grid sheet, and the longitudinal steel wires 11121 at the bottom of the W-shaped web 1112 are welded together to form a criss-cross lower grid sheet. The wire mesh frame 111 is formed by arranging a plurality of W-shaped web sheets 1112 parallel to each other between an upper mesh sheet and a lower mesh sheet parallel to each other.
The W-shaped abdominal wire 11122, the longitudinal steel wire 11121 and the transverse steel wire 1111 are cold-drawn steel wires with the diameter of 2mm, and are subjected to zinc plating and corrosion prevention treatment.
Preferably, the transverse steel wires 1111 are perpendicular to the W-shaped web 1112.
Preferably, the wire framework 11 comprises a plurality of steel bar trusses 112; the steel bar truss 112 is a welded steel bar framework with an inverted V-shaped cross section, which is formed by welding an upper chord steel bar 1121, two lower chord steel bars 1122 and web member steel bars 1123 on two sides; the steel bar truss 112 is arranged between two adjacent W-shaped web meshes 1112.
Preferably, in the steel-wire framework heat-insulating precast slab 1, the steel-wire framework 11 is arranged along the slab length direction according to the W-shaped belly wire mesh 1112 and the steel bar truss 112.
Preferably, the heat insulation core material 12 is formed by combining a heat insulation material lath 121 with pouring polyphenyl particle fiber concrete, foaming concrete or heat insulation mortar 122; the heat insulation core material 12 between the two W-shaped web meshes 1112 of the steel bar truss 112 is formed by pouring polyphenyl particle fiber concrete, foamed concrete or heat insulation mortar 122; between two W-shaped abdominal wire meshes 1112 which are not provided with the steel bar truss 112, the interior of the precast slab is filled with a heat-insulating material lath 121, and both ends are poured with polyphenyl granule fiber concrete, foamed concrete or heat-insulating mortar 122; the heat insulating material lath 121 is selected from an XPS polystyrene lath, an EPS polystyrene lath, a rock wool lath and the like.
Preferably, in the same steel bar truss 112, the distance between the upper chord steel bars 1121 and the lower chord steel bars 1122 in the vertical direction is 70-200mm, the distance between the outer surfaces of the two lower chord steel bars 1122 is 60-100mm, and the center distance between welding points of the web member steel bars 1123 and the upper chord steel bars 1121 and the lower chord steel bars 1122 is less than or equal to 200 mm; the distance between the two W-shaped abdominal wire net sheets 1112 which are not provided with the steel bar truss 112 is 50 mm; the distance between each transverse steel wire 1111 of the upper and lower grid sheets is 50 mm; the insulating material panel 121 filled in the wire framework 11 has a width of 50 mm.
Preferably, the steel bar truss 112 further comprises end reinforcing steel bars; the two ends of the steel bar truss 112 are welded and fixed by end reinforcing steel bars.
The end reinforcing steel bars are used for fixing the shape and the size of the steel bar truss 112; on the other hand, when the steel wire framework heat-insulation precast slab 1 is installed, the steel wire framework heat-insulation precast slab is fixedly supported on a beam or a wall through welding end reinforcing steel bars.
Preferably, two ends of the steel bar truss 112 respectively extend out from two sides of the steel wire framework heat insulation precast slab 1, the length of the extension is 12d and needs to cross the center line of the beam, wherein d is the diameter of the steel bar.
Steel wire framework heat preservation prefabricated plate, prefabricated according to following step:
1) installing a template and coating a release agent;
2) a cushion block is arranged on the bottom die and used for limiting a steel bar truss or a steel wire mesh frame;
3) placing the steel wire mesh frame and the steel bar truss to finish binding;
4) pouring fine stone concrete, and then vibrating and leveling;
5) laying heat-insulating material battens among the abdominal wire meshes without the steel bar trusses; and/or pouring polyphenyl particle fiber concrete, foamed concrete or thermal mortar between the abdominal wire meshes of the steel bar truss;
6) maintaining the steel wire framework heat-insulating prefabricated plate and protecting a semi-finished product.
In the above steps, the thermal insulation material lath can be filled before or after the fine aggregate concrete is poured.
The utility model discloses still provide an assembled coincide floor, as shown in figure 1 to figure 9, it includes:
the steel wire framework heat-preservation precast slab 1;
and the cast-in-place concrete superposed layer 2 is arranged above the steel wire framework heat-insulation precast slab 1.
Preferably, the thickness of the fine aggregate concrete bottom plate is more than or equal to 50 mm; the thickness of the heat-insulating core plate is more than or equal to 50 mm; the thickness of the cast-in-place concrete laminated layer is more than or equal to 50 mm.
Preferably, the concrete strength grade of the steel wire framework heat-insulation precast slab is more than or equal to C30.
Assembled coincide floor, prepare and construct according to following step:
1) prefabricating the steel wire framework heat-preservation prefabricated plate according to the method;
2) the steel wire framework heat-preservation precast slab is vertically hoisted on a construction site;
3) splicing and fixing the steel wire framework heat-insulating prefabricated plate;
4) pouring concrete, and then vibrating and trowelling;
5) and maintaining and protecting finished products according to the standard to obtain the fabricated composite floor slab.
When the constructed main structure is a reinforced concrete structure, a reinforced connecting piece is arranged on the concrete according to the paying-off position, and is connected with a steel wire mesh frame in the steel wire framework heat-insulation precast slab by adopting a binding process; or when the main structure is a steel structure, connecting the preset connecting piece in the steel structure with the steel wire mesh frame in the steel wire framework heat-insulation precast slab by adopting a binding process.
In order to adapt to special-shaped structures such as pipelines, corners and the like in a room, the steel wire framework heat-insulation precast slab is also provided with an embedded part and/or a reserved hole, so that field cutting and punching of precast slabs can be avoided when the precast slab is assembled on the field; therefore, when the prefabricated panels are assembled on site, the prefabricated panels provided with the embedded parts and/or the reserved holes are required to be installed at the specified positions, and the prefabricated panels cannot be used in a mixed mode. When two adjacent steel wire framework heat-insulation prefabricated plates are spliced, the positions and the sizes of embedded parts and reserved holes in the steel wire framework prefabricated plates at different positions are determined to be correct, and then the steel bar connecting pieces are fixedly connected through the embedded parts and/or the reserved holes, so that the steel wire framework heat-insulation prefabricated plates can be spliced seamlessly.
As shown in the attached drawing 10, the joints of two longitudinally parallel steel wire framework heat-insulating precast slabs are bound on the steel wire frameworks by using an additional reinforcing steel bar net rack for reinforcement connection, wherein the width of the additional reinforcing steel bar net rack is 200mm, and the additional reinforcing steel bar net rack is formed by binding and connecting 2 longitudinal reinforcing steel bars with the diameter of 6mm and transverse reinforcing steel bars with the distance of 200mm and the diameter of 6 mm; an additional reinforcing steel bar net rack is arranged on one side of the corner of the wall column node, so that the basic anchoring length of the support is met, and the requirement of anti-seismic design is met.
When the steel wire framework heat-preservation prefabricated plate 1 is spliced, the splicing seams are effectively treated, and the heat-preservation and heat-insulation effects of the steel wire framework heat-preservation prefabricated plate are prevented from being influenced by cold bridges. The method comprises the following steps that cement-based shrinkage-free grouting material is used for grouting at the abutted seam of the steel wire framework heat-insulation precast slab, wherein the caulking depth of the grouting material is not less than 15 mm; or, the dry and hard cement mortar needs to be tightly twisted and plugged, wherein the caulking depth of the dry and hard cement mortar is not less than 20 mm. When the sealing material is embedded and filled, the plate joint within 300mm of the junction of the horizontal plate joint and the vertical plate joint is constructed at one time, and the plate joint has uniform appearance; and keeping the plate joint dry within 72 hours after caulking, and preventing the plate joint caulking construction from being carried out at the temperature lower than 5 ℃ or in rainy days.
Preferably, the steel wire framework heat-insulation precast slab is fixed on the beam or the wall through end reinforcing steel bars.
Preferably, the arrangement number of the steel bar connecting pieces is calculated according to the bending resistance, shearing resistance and torsion resistance of the connecting pieces and the requirement of the floor slab, and is determined by referring to the slab joint position of the heat-insulating composite floor slab.
Furthermore, in an embodiment of the present invention, the fabricated composite floor slab is manufactured according to the following method:
s1, production of a steel wire mesh frame 111: firstly, bending a steel wire to form a W-shaped abdominal wire 11122 with the height (the vertical distance between a peak point and a valley point) of 12 cm; welding the W-shaped abdominal wire 11122 and the longitudinal steel wire 11121 to form a W-shaped abdominal wire net sheet 1112 with the height of 12 cm; then spot welding the transverse steel wire 1111 and the longitudinal steel wire 11121 at two sides of the W-shaped abdominal wire net sheet 1112 to form a steel wire mesh frame 111 with a three-dimensional space; wherein the W-shaped abdominal wire mesh sheets 1112 are not arranged at the positions with the transverse widths of 20-25cm, 55-60cm and 90-95cm of the steel wire mesh frame;
s2, producing the steel bar truss 112, namely firstly taking one round main steel bar with the diameter of 10mm as an upper chord steel bar 1121, taking two round auxiliary steel bars with the diameter of 8mm to be made into a W-shaped steel bar stringer (a web member steel bar 1123), and taking two 8mm round auxiliary steel bars as a lower chord steel bar 1122, placing the two web member steel bars 1123 in a Λ shape, welding the upper chord steel bar 1121 with the top end of Λ, and respectively welding the two lower chord steel bars 1122 on two sides of a bottom foot of Λ;
s3, production of the steel wire framework 11: firstly, taking one steel wire mesh frame 111 manufactured in the step S1, wherein the width of the steel wire mesh frame is 120cm, then taking three steel bar trusses 112 manufactured in the step S2, and sequentially placing the three steel bar trusses 112 at positions, which are reserved in the steel wire mesh frame 111 and are not provided with the W-shaped abdominal wire mesh sheets 1112, namely the steel wire mesh frame 111 in the step S1 is 20-25cm, 55-60cm and 90-95cm in transverse width; then fixing the steel bar truss 112 and the steel wire mesh frame 111 by using binding wires;
s4, producing a steel wire framework 11 sandwich heat preservation lightweight board, namely placing a long strip rectangular sandwich heat preservation material strip 121 with the cross section of 5cm × 5cm at a longitudinal blank space except for a plurality of positions of 5cm, 20-25cm, 55-60cm, 90-95cm and 120cm in the steel wire mesh frame 111 manufactured in the step S1, and then placing a steel bar truss 112 to a preset position according to the mode of the step S3 to obtain the steel wire framework sandwich heat preservation lightweight board;
s5, pouring the fine aggregate concrete bottom plate 13 to obtain the steel wire framework heat-insulation precast slab;
s6, pouring polyphenyl particle fiber concrete, foamed concrete or thermal mortar 122 at the position where the thermal insulation material lath 121 is not filled in the thermal insulation core material 12;
and S7, splicing and fixing the steel wire framework heat-insulation precast slabs on site, and pouring a cast-in-place superposed layer on the top of the steel wire framework heat-insulation precast slabs to obtain the assembled steel wire framework heat-insulation superposed slab.
The features of the invention claimed in the claims and/or in the description may be combined, but the combination is not limited to the combination defined in the claims by the reference. The technical solution obtained by combining the technical features in the claims and/or the specification is also the scope of the present invention.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change and modification made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.
Claims (11)
1. A steel wire framework heat-preservation prefabricated plate is characterized by comprising:
a fine stone concrete floor;
the steel wire framework is formed by binding a steel wire mesh frame and a steel bar truss, and the lower part of the steel wire framework is embedded in the fine aggregate concrete bottom plate; the steel wire mesh frame comprises W-shaped abdominal wires;
and the heat-insulating core material is filled in the steel wire framework.
2. The steel-wire framework heat-insulating precast slab according to claim 1,
the steel wire net frame also comprises transverse steel wires and longitudinal steel wires;
the longitudinal steel wires are respectively connected with the peak point side of the same W-shaped abdominal wire or respectively connected with the valley point side of the same W-shaped abdominal wire;
the W-shaped abdominal wires and the longitudinal steel wires are welded together to form a W-shaped abdominal wire net sheet;
the transverse steel wires are connected with the longitudinal steel wires of the W-shaped abdominal wire net pieces arranged in parallel in a spot welding mode to form a steel wire net frame.
3. The steel-wire framework heat-insulating precast slab according to claim 2,
the steel wire framework comprises a plurality of steel bar trusses;
the steel bar truss is a welded steel bar framework with an inverted V-shaped cross section formed by welding an upper chord steel bar, two lower chord steel bars and web member steel bars on two sides;
the steel bar truss is arranged between the two adjacent W-shaped abdominal wire meshes.
4. The steel-wire framework heat-insulating precast slab according to claim 2,
in the steel wire framework heat-insulation precast slab, the steel wire framework is arranged along the slab length direction according to the W-shaped web wire net and the steel bar truss.
5. The steel-wire framework heat-insulating precast slab according to claim 2,
the heat-insulating core material arranged between the two W-shaped web wire meshes of the steel bar truss is formed by pouring polyphenyl particle fiber concrete, foamed concrete or heat-insulating mortar;
between two W-shaped web meshes without the steel bar truss, the interior of the precast slab is filled with a heat-insulating material lath, and polyphenyl particle fiber concrete, foamed concrete or heat-insulating mortar is poured at two ends of the precast slab.
6. The steel-wire framework heat-insulating precast slab according to any one of claims 2 to 5,
in the same steel bar truss, the distance between the upper chord steel bar and the lower chord steel bar in the vertical direction is 70-200mm, the distance between the outer surfaces of the two lower chord steel bars is 60-100mm, and the center distance between welding points of the web member steel bar and the upper chord steel bar and the lower chord steel bar is less than or equal to 200 mm;
the distance between the two W-shaped abdominal wire net sheets without the steel bar truss is 50 mm;
the distance between the transverse steel wires is 50 mm;
the width of the insulating material lath filled in the steel wire framework is 50 mm.
7. The steel-wire framework heat-insulating precast slab according to claim 6,
the steel bar truss also comprises end reinforcing steel bars;
and the two ends of the steel bar truss are welded and fixed by end reinforcing steel bars.
8. The steel-wire framework heat-insulating precast slab according to claim 6,
two ends of the steel bar truss respectively extend out of two sides of the steel wire framework heat-insulation precast slab, the extending length of the steel bar truss is 12d and needs to pass through the center line of the beam, and d is the diameter of the steel bar.
9. An assembled composite floor slab, comprising:
the steel wire framework heat-insulating precast slab according to any one of claims 1 to 8;
and the cast-in-place concrete superposed layer is arranged above the steel wire framework heat-insulation precast slab.
10. The fabricated composite floor slab of claim 9,
the thickness of the fine stone concrete bottom plate is more than or equal to 50 mm;
the thickness of the heat-insulating core material is more than or equal to 50 mm;
the thickness of the cast-in-place concrete laminated layer is more than or equal to 50 mm.
11. The fabricated composite floor slab of claim 9,
the concrete strength grade of the steel wire framework heat-insulation precast slab is more than or equal to C30.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921789528.6U CN211143352U (en) | 2019-10-23 | 2019-10-23 | Steel wire framework heat-insulating prefabricated slab and assembled composite floor slab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921789528.6U CN211143352U (en) | 2019-10-23 | 2019-10-23 | Steel wire framework heat-insulating prefabricated slab and assembled composite floor slab |
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| Publication Number | Publication Date |
|---|---|
| CN211143352U true CN211143352U (en) | 2020-07-31 |
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| Country | Link |
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| CN (1) | CN211143352U (en) |
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