CN111877631A - Prefabricated assembled roof boarding - Google Patents
Prefabricated assembled roof boarding Download PDFInfo
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- CN111877631A CN111877631A CN202010817812.0A CN202010817812A CN111877631A CN 111877631 A CN111877631 A CN 111877631A CN 202010817812 A CN202010817812 A CN 202010817812A CN 111877631 A CN111877631 A CN 111877631A
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- prefabricated roof
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- roof panel
- prefabricated
- longitudinal ribs
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B7/00—Roofs; Roof construction with regard to insulation
- E04B7/20—Roofs consisting of self-supporting slabs, e.g. able to be loaded
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- Engineering & Computer Science (AREA)
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- Structural Engineering (AREA)
- Roof Covering Using Slabs Or Stiff Sheets (AREA)
Abstract
The invention provides a prefabricated roof panel, comprising: two longitudinal ribs arranged in parallel at intervals; the two transverse ribs are arranged in parallel at intervals and fixedly connected with the top surfaces of the two longitudinal ribs to form a supporting frame with a rectangular horizontal section; the steel wire mesh is fixedly covered on the top surface of the support frame; and the surface concrete layer is arranged on the steel wire net, and the bottom surface shape of the surface concrete layer is matched with the top surface shape of the supporting frame. The prefabricated assembled roof panel has the advantages that the frame consisting of the two longitudinal ribs and the two transverse ribs, the high-strength concrete layer on the panel surface and the steel wire mesh are stressed together, the weight of the prefabricated assembled roof panel can be reduced on the premise of ensuring the integral strength, and the prefabricated assembled roof panel has the advantages of high durability, light weight and convenience in manufacturing.
Description
Technical Field
The invention relates to a prefabricated assembled roof panel.
Background
With the development of science and technology and the increasing awareness of energy conservation and environmental protection, the assembly type building receives great attention. The fabricated building has high construction speed and can be completed in a short time. The assembly type building can be manufactured into required basic components in a factory, and the combined installation work is completed on a construction site, so that the workload of workers is reduced, and the on-site wet operation amount can be reduced; the construction period is short, manpower and material resources are saved, and the construction cost is reduced. The following two common structures are known in the prior art:
the first prior art is as follows: chinese patent application with publication number CN 208763276U and publication date 2019.04.19 provides a combined steel frame light roof panel, which comprises a roof panel body; the roof panel body comprises a prefabricated flat steel frame and a heat-insulating core material filled in the prefabricated flat steel frame; the bottom of the prefabricated flat steel frame is placed on the welding steel frame, and the welding steel frame is used for prefabricating the flat steel frame; and the welding steel frame is connected with the prefabricated flat steel frame in a welding manner. The first prior art has the following defects: the whole structure adopts C-shaped steel and lightweight concrete, and has small rigidity and low strength.
The second prior art is: the Chinese patent application with publication number CN 206299042U and publication date 2017.07.04 provides a lightweight concrete prefabricated composite roof panel, which comprises a waterproof reinforcing layer and a heat-insulating layer; the waterproof reinforced layer is arranged above the heat-insulating layer, and reinforcing mesh sheets are arranged above and below the heat-insulating layer; reinforcing ribs are arranged below the waterproof reinforcing layer, and the waterproof reinforcing layer, the heat-insulating layer and the reinforcing mesh are all integrally cast by lightweight concrete; mounting pieces for connecting adjacent composite roof panels are arranged at two ends of the composite roof panels; the waterproof reinforced layer can also be provided with a decorative surface layer; the mounting pieces are groove-shaped components with upward openings and corresponding pressing strips, and gaps between adjacent composite roof panels are sealed through the mounting pieces and weather-resistant glue. The second prior art has the following defects: the self weight is large, and the prefabrication process is complex.
Disclosure of Invention
The invention provides a prefabricated roof panel, which aims to improve the durability and reduce the weight.
The technical scheme adopted by the invention for solving the technical problems is as follows: a prefabricated roof panel comprising: two longitudinal ribs arranged in parallel at intervals; the two transverse ribs are arranged in parallel at intervals and fixedly connected with the top surfaces of the two longitudinal ribs to form a supporting frame with a rectangular horizontal section; the steel wire mesh is fixedly covered on the top surface of the support frame; and the surface concrete layer is arranged on the steel wire net, and the bottom surface shape of the surface concrete layer is matched with the top surface shape of the supporting frame.
Further, the interval is provided with a plurality of connecting holes on braced frame's the top surface, and prefabricated assembled roof boarding includes a plurality of steel connecting plate, a plurality of steel connecting plate and a plurality of connecting hole one-to-one, and be provided with the mating holes that correspond with the connecting hole on every steel connecting plate, a plurality of steel connecting plate can compress tightly the periphery of wire net in braced frame's top surface.
Further, prefabricated assembled roof boarding includes a plurality of connection steel sheet, sets up along braced frame's top surface interval, and every connection steel sheet all includes detachable last briquetting and briquetting down, goes up the briquetting and can compress tightly the periphery of wire net in briquetting down.
Further, prefabricated assembled roof boarding still includes the concrete baffle, sets up in the periphery of braced frame's top surface, and the concrete baffle end to end connection forms a rectangle annular structure, and wire net and face concrete layer all set up in rectangle annular structure.
Further, the bottom surface of the concrete baffle is fixedly connected with the top surface of the supporting frame, and the top surface of the concrete baffle is higher than the top surface of the supporting frame in the vertical direction.
Furthermore, two longitudinal ribs, two transverse ribs, a steel wire mesh and a plate concrete layer form a prefabricated roof plate unit, the prefabricated roof plate unit comprises a plurality of prefabricated roof plate units, and the longitudinal ribs of two adjacent prefabricated roof plate units are adjacent at intervals.
Further, the bottom outside of every vertical rib all is provided with the grout baffle, the one end of grout baffle and the bottom surface fixed connection of the vertical rib that corresponds, the other end orientation of grout baffle is kept away from the direction extension of the vertical rib that corresponds.
Furthermore, a polyvinyl chloride sealing rod is arranged at a gap between two adjacent longitudinal ribs of two adjacent prefabricated roof panel units and is positioned above the grouting material baffle.
Furthermore, the prefabricated assembled roof panel also comprises a grouting material layer which is arranged between the gap between the adjacent longitudinal ribs of the adjacent prefabricated assembled roof panel units and the two end parts of the concrete layer of the adjacent panel.
Furthermore, the prefabricated assembled roof panel also comprises a horizontal connecting plate, and the bottom surface of the horizontal connecting plate is fixedly connected to the top surfaces of the adjacent longitudinal ribs of the adjacent prefabricated assembled roof panel units.
The prefabricated assembled roof panel has the advantages that the frame consisting of the two longitudinal ribs and the two transverse ribs, the high-strength concrete layer on the panel surface and the steel wire mesh are stressed together, the weight of the prefabricated assembled roof panel can be reduced on the premise of ensuring the integral strength, and the prefabricated assembled roof panel has the advantages of high durability, light weight and convenience in manufacturing.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a plan view of a prefabricated roof panel;
FIG. 2 is a connecting view of the longitudinal rib and the lateral rib;
FIG. 3 is a schematic view of a concrete baffle;
FIG. 4 is a schematic view of the connection of the cross ribs and the steel wire mesh;
fig. 5 is a schematic view between adjacent prefabricated roof panel elements;
fig. 6 is a schematic view of a connection between two adjacent prefabricated roof panel elements;
fig. 7 is a schematic view of the connection between four adjacent prefabricated roof plate elements.
Reference numbers in the figures: 1. longitudinal ribs; 2. a cross rib; 3. steel wire mesh; 4. connecting steel plates; 5. a concrete baffle; 6. grouting material baffle plates; 7. a concrete layer on the surface of the board; 8. a polyvinyl chloride seal bar; 9. a horizontal connecting plate; 10. and (7) grouting a slurry layer.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1 to 7, an embodiment of the present invention provides a prefabricated roof panel, which includes two longitudinal ribs 1, two transverse ribs 2, a steel wire mesh 3, and a slab concrete layer 7. Each longitudinal rib 1 is arranged in parallel at intervals; the two transverse ribs 2 are arranged in parallel at intervals, and the two transverse ribs 2 are fixedly connected with the top surfaces of the two longitudinal ribs 1 to form a supporting frame with a rectangular horizontal section; the steel wire mesh 3 is fixedly covered on the top surface of the support frame; the face concrete layer 7 is arranged on the steel wire mesh 3, and the bottom face of the face concrete layer 7 is matched with the top face of the supporting frame in shape.
The frame consisting of the two longitudinal ribs 1 and the two transverse ribs 2, the high-strength concrete layer 7 on the face and the steel wire mesh 3 are stressed together, so that the weight of the prefabricated roof plate can be reduced on the premise of ensuring the integral strength, and the prefabricated roof plate has the advantages of high durability, light weight and convenience in manufacturing.
Specifically, the longitudinal ribs 1 and the transverse ribs 2 are made of rectangular steel pipes, the material of the longitudinal ribs 1 and the transverse ribs 2 can be Q345 or Q235, the longitudinal ribs 1 and the transverse ribs 2 need to be derusted, and the outer leakage parts are brushed with antirust paint and finish paint.
Prefabricated assembled roof boarding includes a plurality of connecting steel plate 4, and a plurality of connecting steel plate 4 braced frame's top surface welded fastening, and wire net 3 is connected with connecting steel plate 4 through the welding mode.
The prefabricated assembled roof board further comprises a concrete baffle plate 5 arranged on the periphery of the top surface of the supporting frame, the concrete baffle plate 5 is connected end to end and forms a rectangular annular structure, and the steel wire mesh 3 and the board surface concrete layer 7 are arranged in the rectangular annular structure.
The concrete baffle 5 is provided to limit the concrete slab 7 and ensure that it is installed to a set position. The length of the plate face concrete layer 7 is less than 6m, the plate width is generally 1480mm, the nominal width is 1500mm, the distance between the transverse ribs 2 is generally less than or equal to the plate width of the plate face concrete layer 7, and the plate thickness of the plate face concrete layer 7 is minimum 30 mm; the concrete strength of the face concrete layer 7 is C30.
Wherein, when face concrete layer 7 was installed, it is on ground to keep flat with above-mentioned braced frame and the wire net 3 that weld, the basement membrane of installation face concrete layer 7, basement membrane can be plywood or steel mould, the top surface of basement membrane and the top surface parallel and level of indulging rib 1 and horizontal rib 2. The isolating agent is brushed on the bottom film to facilitate demoulding, and the bottom film can be reused.
In the embodiment of the invention, the bottom surface of the concrete baffle 5 is fixedly connected with the top surface of the support frame, and the top surface of the concrete baffle 5 is higher than the top surface of the support frame in the vertical direction. With concrete baffle 5 set to above-mentioned structure, the purpose is to form the accommodation space that can hold face concrete layer 7 at braced frame's top surface to its top surface is the top parallel and level with concrete baffle 5 when making face concrete layer 7 place in the accommodation space.
In this embodiment, two longitudinal ribs 1, two transverse ribs 2, a steel wire mesh 3 and a concrete layer 7 form a prefabricated roof panel unit, the prefabricated roof panel unit comprises a plurality of prefabricated roof panel units, and the longitudinal ribs 1 of two adjacent prefabricated roof panel units are adjacent at intervals.
This embodiment can be provided with one or more prefabricated assembled roof plate elements to adapt to different working condition needs.
Preferably, the two or more prefabricated roof panel units form a prefabricated roof panel array, and this embodiment may also adopt a form in which a plurality of prefabricated roof panel arrays are connected in parallel (for example, four prefabricated roof panel units are arranged in a rectangular array form) to adapt to different working condition requirements.
As shown in fig. 2, a grout baffle 6 is arranged on the outer side of the bottom of each longitudinal rib 1, one end of the grout baffle 6 is fixedly connected with the outer surface of the bottom of the corresponding longitudinal rib 1, and the other end of the grout baffle 6 extends towards the direction far away from the corresponding longitudinal rib 1. The grouting material baffle 6 is arranged to block the grouting material layer 10, so that leakage of the grouting material layer 10 is avoided.
And a polyvinyl chloride sealing rod 8 is arranged at a gap between two adjacent longitudinal ribs 1 of two adjacent prefabricated roof plate units, and the polyvinyl chloride sealing rod 8 is positioned above the grouting material baffle 6.
As shown in fig. 5, the prefabricated roof boarding further includes a grouting layer 10 disposed between the gaps between the adjacent longitudinal ribs 1 of the adjacent prefabricated roof boarding elements and between the two ends of the concrete layer 7 of the adjacent slab face. The grouting layer 10 is used for connecting a gap between two adjacent prefabricated roof panel units.
Preferably, the prefabricated assembled roof panels further comprise horizontal connecting plates 9, and the bottom surfaces of the horizontal connecting plates 9 are fixedly connected to the top surfaces of the adjacent longitudinal ribs 1 of the adjacent prefabricated assembled roof panel units. The arrangement of the horizontal connecting plate 9 can increase the connecting stability of the adjacent prefabricated roof plate units.
After the embodiment is hoisted in place, the longitudinal ribs 1 are welded on a steel base plate of the steel roof truss. And (3) a polyvinyl chloride sealing rod 8 is plugged into a gap between every two adjacent longitudinal ribs 1, and a horizontal connecting plate 9 is welded, wherein the horizontal connecting plate 9 is positioned in the span of the longitudinal ribs 1. And after the welding is finished, the grouting material layer 10 is poured, and after the strength is reached, the subsequent operations such as the waterproof layer of the heat-insulating layer and the like are finished.
As shown in fig. 6 and 7, an embodiment of the invention provides two connection ways of adjacent prefabricated roof panel units, where fig. 6 is a schematic view between two adjacent prefabricated roof panel units, and in this embodiment two ends of a horizontal connecting plate 9 are respectively connected to two adjacent prefabricated roof panel units. Fig. 7 is a schematic view between four adjacent prefabricated roof plate elements, in this embodiment two adjacent prefabricated roof plate elements are connected to two ends of a horizontal connecting plate 9, respectively, and each prefabricated roof plate element is fixedly welded to one corner of the horizontal connecting plate 9.
It should be noted that:
the longitudinal ribs 1 and the transverse ribs 2 are required to meet the relevant regulations of Square and rectangular hot rolled seamless steel pipes for structures GB/T34201, and the steel is required to meet the requirements of Steel Structure design Standard GB 50017. The strength and durability of the face concrete layer 7 are in accordance with the relevant regulations in the concrete structure design Specification GB50010, and the concrete with the grade of above C30 is adopted. The steel wire mesh 3 should meet the requirements of the technical code for cold-drawn low-carbon steel wire application JGJ 19-2010. When Q345 steel is used, the welding rod adopts E50 type; when Q235 steel is used, the welding rod adopts an E43 type; the lifting hook is made of Q235 steel.
The calculation principle is as follows: in general, the safety level of the prefabricated roof panel in the use stage is two levels, and for the important building roof, the first level can be adopted. The prefabricated roof slab should be calculated in the limit state of bearing capacity and the limit state of normal use, the allowable deflection 1/200 of the longitudinal ribs 1 and the allowable crack of the concrete layer 7 of the slab surface are not more than 0.2 mm.
During calculation, the diameter and the distance of the steel wire mesh 3 of the plate are calculated according to the uniformly distributed load by dividing the end plate and the middle plate, the end plate is simply supported according to three sides, and one side of the end plate is fixedly calculated; the middle plate is simply supported according to two sides, the two sides are fixedly connected and calculated, the middle plate is uniformly selected according to the maximum calculation result, and cracks of the plate surface concrete layer 7 are calculated and controlled.
Furthermore, the longitudinal rib 1 is acted with a plurality of sections of triangular loads and concentrated loads transmitted by the midspan transverse rib, and the strength and the deflection of the longitudinal rib are calculated according to the single-span simply supported beam. And when the transverse rib 2 is calculated, the strength and the deflection of the transverse rib are calculated according to the triangular load and the single-span simply supported beam.
Preferably, the embodiment should also be subjected to checking calculation in the hoisting stage and checking calculation in the construction and installation stage. And in the hoisting stage, checking calculation is carried out on four hoisting points of the prefabricated assembly type roof panel according to the panel ends, and only the self weight and the power coefficient of the prefabricated assembly type roof panel are considered to be 1.5 during hoisting. And (3) checking and calculating in the construction and installation stage, because of the construction of the roof waterproof heat-insulating material, part of the stacking load or the load of the transport trolley can be applied to the plate, except for the designed waterproof heat-insulating material and the like, the effects of the stacking load and the transport load are considered, and the power coefficient is considered.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects: the frame consisting of the two longitudinal ribs 1 and the two transverse ribs 2, the high-strength concrete layer 7 on the face and the steel wire mesh 3 are stressed together, so that the weight of the prefabricated roof plate can be reduced on the premise of ensuring the integral strength, and the prefabricated roof plate has the advantages of high durability, light weight and convenience in manufacturing.
The above description is only exemplary of the invention and should not be taken as limiting the scope of the invention, so that the invention is intended to cover all modifications and equivalents of the embodiments described herein. In addition, the technical features, the technical schemes and the technical schemes can be freely combined and used.
Claims (8)
1. A prefabricated roof panel, comprising:
the two longitudinal ribs (1) are arranged in parallel at intervals;
the two transverse ribs (2) are arranged in parallel at intervals, and the two transverse ribs (2) are fixedly connected with the top surfaces of the two longitudinal ribs (1) to form a supporting frame with a rectangular horizontal section;
the steel wire mesh (3) is fixedly covered on the top surface of the support frame;
the steel wire mesh concrete slab is characterized by comprising a slab concrete layer (7) arranged on the steel wire mesh (3), wherein the bottom surface of the slab concrete layer (7) is matched with the top surface of the supporting frame in shape.
2. Prefabricated roof plate according to claim 1, characterised in that it further comprises concrete baffles (5) arranged at the periphery of the top surface of the supporting frame, said concrete baffles (5) being connected end to end and forming a rectangular ring structure, said steel wire mesh (3) and said slab concrete layer (7) being arranged within said rectangular ring structure.
3. Prefabricated roof plate according to claim 2, characterised in that the bottom side of the concrete baffle (5) is fixedly connected with the top side of the support frame, and that the top side of the concrete baffle (5) is vertically higher than the top side of the support frame.
4. Prefabricated roof plate according to claim 1, characterised in that two longitudinal ribs (1), two transverse ribs (2), a piece of steel wire mesh (3) and a slab concrete layer (7) form one prefabricated roof plate element, which comprises a plurality of prefabricated roof plate elements, the longitudinal ribs (1) of two adjacent prefabricated roof plate elements being spaced apart and adjacent.
5. Prefabricated roof panel according to claim 4, wherein a grout baffle (6) is arranged on the outer side of the bottom of each longitudinal rib (1), one end of the grout baffle (6) is fixedly connected with the outer surface of the bottom of the corresponding longitudinal rib (1), and the other end of the grout baffle (6) extends in a direction away from the corresponding longitudinal rib (1).
6. Prefabricated roof plate according to claim 5, characterised in that a sealing bar (8) of polyvinyl chloride is arranged in the gap between two adjacent longitudinal ribs (1) of two adjacent prefabricated roof plate elements, said sealing bar (8) of polyvinyl chloride being located above said grout stop (6).
7. Prefabricated roof panel according to claim 6, characterised in that it further comprises a grouting layer (10) arranged between the gaps between adjacent longitudinal ribs (1) of adjacent prefabricated roof panel units and between the two ends of adjacent deck concrete layers (7).
8. Prefabricated roof panel according to claim 6, characterised in that it further comprises horizontal connecting plates (9), the bottom surfaces of said horizontal connecting plates (9) being fixedly connected to the top surfaces of adjacent longitudinal ribs (1) of adjacent prefabricated roof panel elements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010817812.0A CN111877631A (en) | 2020-08-14 | 2020-08-14 | Prefabricated assembled roof boarding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010817812.0A CN111877631A (en) | 2020-08-14 | 2020-08-14 | Prefabricated assembled roof boarding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111877631A true CN111877631A (en) | 2020-11-03 |
Family
ID=73203754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010817812.0A Pending CN111877631A (en) | 2020-08-14 | 2020-08-14 | Prefabricated assembled roof boarding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111877631A (en) |
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2020
- 2020-08-14 CN CN202010817812.0A patent/CN111877631A/en active Pending
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