Building overhead roof structure
By designing a closed air interlayer structure on the building roof, using thermal insulation aluminum foil and multi-layer insulation materials, the problem of low insulation efficiency of building roofs in cold and arid areas is solved, and the effect of sun protection in summer and cold protection in winter is achieved. Reduces heat conduction and saves energy.
Patent Information
- Application Number
- CN202420879147.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-25
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-04-25
AI Technical Summary
In cold and arid areas, there are many types of materials, complex manufacturing processes, and unenvironmental protection, and difficult to improve thermal insulation efficiency. Many buildings do not use closed overhead layer structures, which lead to radiation heat dissipation, and air flow accelerates indoors. External heat conduction and serious waste of resources.
Adopt a closed air interlayer structure including support beams, roof structural panels, daughter's walls, first insulation and thermal insulation layer, waterproof coils, isolation layers, protective layers and overhead panels. Long grooves and drainage gutters are provided on the overhead panels , heat-insulating aluminum foil is provided on the lower surface, and a second insulation layer is installed outside the support beam and the daughter wall to form a closed air interlayer to reduce heat conduction.
By forming a closed air interlayer, the building's sun protection and heat storage effect in winter is improved, the radiant heat conduction is reduced, the thermal resistance of the air interlayer is improved, energy saving, and the insulation needs of buildings in cold and arid areas are met. .
Smart Images
Figure CN222206992U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of construction, and in particular relates to an overhead roof structure of a building. Background Art
[0002] Cold and arid areas have scarce precipitation, dry climate, cold winters and hot summers, and distinct four seasons. It is recommended that buildings in cold and arid areas adopt thermal insulation, heat insulation and sun-proof elevated roofs, using the principle of "large thermal resistance of closed air layer" to prevent heat conduction inside and outside the building roof.
[0003] Just as various thermal insulation materials are currently laid, filled and installed on the inside and outside of the roofs of some buildings, the materials are of various varieties and categories, the manufacturing and installation processes are complicated and not environmentally friendly, and the cost is high, and it is difficult to improve the insulation efficiency; even some buildings have overhead floors on their roofs, but they do not adopt a closed overhead floor structure and method. The radiant heat is dissipated with the air flow and offsets each other. The air flow accelerates the conduction of indoor and outdoor radiant heat, and a stable closed air layer cannot be formed, resulting in a waste of resources. Therefore, there is still a need to greatly improve the thermal insulation and sun protection of buildings in cold and arid areas. Utility Model Content
[0004] The utility model aims to provide a building overhead roof structure to improve the thermal insulation and sun protection performance of buildings in cold and arid areas.
[0005] The technical solution of the utility model is: a building overhead roof structure, including supporting beams and roof structure panels, a parapet is arranged on the top of the roof structure panels, a first thermal insulation layer, a waterproof membrane, an isolation layer and a protective layer are arranged on the top of the roof structure panels from bottom to top, an overhead panel is arranged above the protective layer, the overhead panel is connected to the parapet on all sides, a closed air layer is formed between the overhead panel and the protective layer, and a plurality of piers are arranged between the protective layer and the overhead panel.
[0006] As a further improvement of the utility model, a long groove running through from top to bottom is opened on the overhead plate, a drainage gutter is provided below the long groove, gutter side piers are provided on both sides of the drainage gutter, and the gutter side piers are connected between the protective layer and the overhead plate.
[0007] As a further improvement of the utility model, a rainwater grate is installed at the long groove.
[0008] As a further improvement of the utility model, a heat-insulating aluminum foil is provided on the lower surface of the overhead plate.
[0009] As a further improvement of the utility model, a second thermal insulation layer is provided outside the supporting beam and the parapet.
[0010] As a further improvement of the utility model, the waterproof coiled material is folded upward on all sides and extends to the side walls of the parapet, and a double-layer waterproof coiled material is arranged at the folded position.
[0011] As a further improvement of the utility model, a sealing paste is provided on the upper end of the waterproof coiled material.
[0012] As a further improvement of the utility model, a sealing material end is provided outside the folded portion of the waterproof coiled material.
[0013] As a further improvement of the utility model, the overhead plate is formed by splicing a plurality of plates, the plate seams are arranged at the piers, and the plate seams are grouted.
[0014] As a further improvement of the utility model, a plastering surface sloping toward the drainage ditch is provided on the upper surface of the overhead plate.
[0015] The beneficial effects of the utility model are as follows: the utility model is different from the existing open overhead roof, and the overhead board is connected to the parapet wall around to form a closed air layer, which plays the purpose of sun protection and heat preservation in summer and cold protection and heat storage in winter. The utility model sets a heat-insulating aluminum foil on the lower surface of the overhead board. The heat-insulating aluminum foil has a small radiation coefficient and a good reflection effect, which reduces the heat conduction of convective heat exchange and radiation heat exchange through the air layer, reduces the radiation heat conduction, and thus improves the thermal resistance of the air layer. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural schematic diagram of the utility model.
[0017] In the figure: 1-support beam; 2-roof structure board; 3-building slope layer; 4-first thermal insulation layer; 5-leveling layer; 6-waterproof membrane; 7-isolation layer; 8-second thermal insulation layer; 9-parapet; 10-sealing material end; 12-sealing paste; 13-expansion bolt; 14-rainwater grate; 15-drainage gutter; 16-overhead board; 17-pier; 18-protective layer; 19-plastering; 20-gutter side pier; 21-board joint; 22-gutter slope layer; 23-insulating aluminum foil. DETAILED DESCRIPTION
[0018] The utility model is described in detail below with reference to the accompanying drawings.
[0019] like Figure 1 As shown, a building overhead roof structure includes a supporting beam 1 and a roof structure plate 2, a parapet 9 is provided on the top of the roof structure plate 2, a first thermal insulation layer 4, a waterproof membrane 6, an isolation layer 7 and a protective layer 18 are provided on the top of the roof structure plate 2 from bottom to top, a building slope layer 3 is provided between the roof structure plate 2 and the first thermal insulation layer 4, a leveling layer 5 is provided between the first thermal insulation layer 4 and the waterproof membrane 6, an overhead plate 16 is provided above the protective layer 18, the overhead plate 16 is connected to the parapet 9 on all sides, a closed air layer is formed between the overhead plate 16 and the protective layer 18, and a plurality of piers 17 are provided between the protective layer 18 and the overhead plate 16.
[0020] A long groove running through from top to bottom is provided on the overhead plate 16, and a drainage gutter 15 is provided below the long groove, and the drainage gutter 15 leads to the roof rainwater outlet, and gutter side piers 20 are provided on both sides of the drainage gutter 15, and the gutter side piers 20 are connected between the protective layer 18 and the overhead plate 16, and a gutter slope leveling layer 22 is provided at the bottom of the drainage gutter 15. A rainwater grate 14 is installed at the long groove.
[0021] A heat-insulating aluminum foil 23 is provided on the lower surface of the overhead plate 16 .
[0022] A second thermal insulation layer 8 is provided outside the support beam 1 and the parapet wall 9 .
[0023] The waterproofing membrane 6 is folded upward around and extends to the side wall of the parapet 9, and a double layer of waterproofing membrane 6 is arranged at the folded part. A steel plate strip is arranged on the outer side of the waterproofing membrane 6 at the parapet 9, and the steel plate strip is fixed to the parapet 9 by expansion bolts 13. A sealing paste 12 is arranged on the upper end of the waterproofing membrane 6.
[0024] A sealing material end 10 is provided outside the folded portion of the waterproof coiled material 6 so that the protective layer 18 and the waterproof coiled material 6 are completely fitted at the parapet 9 position.
[0025] The overhead slab 16 is formed by splicing a plurality of slabs, a slab seam 21 is arranged at the pier 17 , and DS mortar is used for grouting at the slab seam 21 .
[0026] A plastering surface 19 sloping toward the drainage gutter 15 is provided on the upper surface of the overhead plate 16 .
[0027] The building slope layer 3 is made of foamed concrete. The leveling layer 5 is made of cement mortar. The gutter slope layer 22 is made of foamed concrete. The plastering 19 is made of cement mortar. The isolation layer 7 is made of non-woven fabric, and the isolation layer 7 is a structural layer that eliminates the adverse effects of bonding force, mechanical bite force, chemical reaction, etc. between two adjacent materials.
[0028] The overhead slab 16 is a prefabricated reinforced concrete slab, which is prefabricated and formed in a factory using C20 concrete. The interior is double-layer bidirectional anti-crack steel bars with a diameter of 6mm and a spacing of 150mm. The lower surface is coated with heat-insulating aluminum foil 23. After maintenance and forming, it is transported to the site for installation.
[0029] The supporting pier 17 and the gutter side pier 20 are both made of C20 concrete, and the protective layer 18 is made of fine stone concrete. The supporting pier 17, the gutter side pier 20, and the protective layer 18 are cast in place at one time. Compared with the traditional secondary masonry structure, the utility model has high construction efficiency, can ensure the flatness of the top surface, and avoid water accumulation and leakage on the roof.
[0030] The first thermal insulation layer 4 and the second thermal insulation layer 8 are made of fireproof rock wool board (Grade A). Basalt is melted at high temperature in the factory to form an inorganic fiber material with a special structure. The material is then cut and processed to form rock wool products that are shipped to the site for installation.
[0031] The construction steps are as follows:
[0032] A. Lay a foam concrete building slope leveling layer 3 on the existing structural roof, with the thinnest part being 30mm thick;
[0033] B. Laying a first thermal insulation layer 4 on the solidified building slope layer 3, the thickness of which is determined by design calculation;
[0034] C. A 20 mm thick M20 cement mortar leveling layer 5 is laid on the first thermal insulation layer 4;
[0035] D. After the leveling layer 5 solidifies and takes shape, two layers of 3mm thick self-adhesive polymer modified asphalt waterproofing membrane 6 are laid, and the side of the parapet 9 is turned up by no less than 250mm. A double layer of waterproofing membrane 6 is set at the folded part and fixed to the parapet 9 with expansion bolts 13 and steel plate strips. The top of the waterproofing membrane 6 is sealed with sealing paste 12;
[0036] E. A non-woven isolation layer 7 is laid on the waterproof coiled material 6, and the weight of the non-woven fabric is not less than 200 grams per square meter, and one layer is laid;
[0037] F. A 50mm thick C20 reinforced fine stone concrete (with anti-crack steel bars of 4mm diameter and 150mm spacing in both directions, with seams set every 6 meters and sealed with sealant) protective layer 18 is laid on the isolation layer 7, and C20 concrete piers 17 (size 300X300mm, vertical and horizontal center distance 800mm) and C20 concrete gutter side piers 20 (size 300X300mm, full-length casting) are cast simultaneously, with the top surface flush and the height not less than 300mm; no piers 17 are set within 800mm of the parapet wall;
[0038] G. Prefabricated reinforced concrete overhead slab 16 is erected on the top surface of the solidified pier 17, and the slab seams 21 are grouted with DS mortar to form the slab in one step;
[0039] H. The overhead plate 16 is constructed with 30mm thick yellow cement and black melon stone mixed mortar for plastering 19, with 0.9mm thick galvanized steel wire mesh inside, mesh size 20mmX20mm, and a 2% slope towards the drainage ditch 15;
[0040] I. A foam concrete gutter slope layer 22 is laid at the bottom of the drainage gutter 15, and a watershed line is set in the middle, with a slope of 1% towards the roof rainwater outlet, and the thinnest part is 150mm;
[0041] J. A rainwater grate 14 is installed above the drainage gutter 15.
[0042] A closed air layer is formed between the overhead plate 16 and the protective layer 18 to prevent the sun from directly shining on the building roof in summer, reduce the surface temperature of the building roof, and reduce the heat conduction into the room; at the same time, the large temperature difference between winter and summer in cold and arid areas is utilized to store energy and heat in the closed air layer to reduce the conduction of indoor heat to the outdoors.
[0043] The utility model effectively guarantees the winter cold protection, heat preservation and antifreeze requirements of buildings in cold and arid areas, and at the same time meets the summer sun protection and heat insulation requirements, reduces heat conduction between the inside and outside of the roof, and saves energy.
Claims
1. A building overhead roof structure, comprising a supporting beam and a roof structure plate, wherein a parapet is provided on the top of the roof structure plate. Features: A first thermal insulation layer (4), a waterproof membrane (6), an isolation layer (7) and a protective layer (18) are arranged in order from bottom to top on the top of the roof structure plate (2); an overhead plate (16) is arranged above the protective layer (18); the overhead plate (16) is connected to the parapet (9) on all sides; a closed air layer is formed between the overhead plate (16) and the protective layer (18); and a plurality of piers (17) are arranged between the protective layer (18) and the overhead plate (16).
2. A building overhead roof structure according to claim 1, Features: The overhead plate (16) is provided with a long groove extending vertically through the vertical groove, a drainage gutter (15) is provided below the long groove, gutter side piers (20) are provided on both sides of the drainage gutter (15), and the gutter side piers (20) are connected between the protective layer (18) and the overhead plate (16).
3. A building overhead roof structure according to claim 2, Features: A rainwater grate (14) is installed at the long groove.
4. A building overhead roof structure according to any one of claims 1 to 3, Features: A heat-insulating aluminum foil (23) is provided on the lower surface of the overhead plate (16).
5. A building overhead roof structure according to claim 4, Features: A second thermal insulation layer (8) is provided outside the support beam (1) and the parapet wall (9).
6. A building overhead roof structure according to claim 5, Features: The waterproof roll material (6) is folded upwards on all sides and extends to the side wall of the parapet (9), and a double layer of waterproof roll material (6) is provided at the folded portion.
7. A building overhead roof structure according to claim 6, Features: A sealing paste (12) is provided on the upper end of the waterproof coiled material (6).
8. A building overhead roof structure according to claim 7, Features: A sealing material end (10) is provided outside the folded portion of the waterproof coiled material (6).
9. A building overhead roof structure according to claim 8, Features: The overhead plate (16) is formed by splicing a plurality of plates, a plate seam (21) is arranged at the pier (17), and a joint is formed at the plate seam (21).
10. A building overhead roof structure according to claim 9, Features: A plastering surface (19) sloping toward the drainage gutter (15) is provided on the upper surface of the overhead plate (16).