Outer wall structure for zero-energy-consumption building
By employing multi-layered thermal insulation measures in the steel structure exterior walls of zero-energy buildings, including filling with insulating rock wool and arranging thermal insulation pads, the poor thermal insulation effect and thermal bridging problem of steel structure exterior walls are solved, resulting in a significant reduction in energy consumption and supporting the realization of zero-carbon, zero-energy buildings.
Patent Information
- Application Number
- CN202520169770.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-24
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-01-24
AI Technical Summary
Existing zero-energy buildings have poor thermal insulation performance in their steel-structured exterior walls and lack treatment for thermal bridging effects, resulting in significant energy losses and high demands for cooling in summer and heating in winter.
Multi-layer thermal insulation measures are adopted, including filling the inner structure of the steel structure with insulating rock wool and arranging thermal insulation pads, and using aluminum foam in the outer structure. By arranging thermal insulation pads in areas prone to thermal bridging, the heat connection between metal components is blocked, forming a thermal bridging structure.
It significantly reduces heat loss from thermal bridges, improves the thermal insulation performance of exterior walls, reduces building energy consumption, and helps achieve the goal of zero-carbon and zero-energy buildings.
Smart Images
Figure CN223838349U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building structure technology, and in particular to an exterior wall structure for zero-energy buildings. Background Technology
[0002] In zero-energy buildings, steel structure building systems have been widely used due to their high strength, lightweight, and superior seismic performance. However, zero-energy steel structure buildings face certain technical challenges in terms of thermal insulation performance, especially in the external wall system. How to efficiently achieve thermal insulation performance while meeting the requirements of building energy conservation and low carbon emissions is a key focus of current technical research.
[0003] Currently, the steel structure exterior walls of zero-energy buildings have poor thermal insulation performance and lack treatment for thermal bridging (weak points in thermal performance). This results in many problems in the insulation of such projects, leading to greater energy loss in the buildings and higher demand for cooling in summer and heating in winter, which is not conducive to achieving the goal of zero-carbon and zero-energy buildings. Utility Model Content
[0004] This utility model mainly addresses the technical problems of existing steel structure exterior wall structures in zero-energy buildings, such as poor thermal insulation performance, lack of thermal bridge treatment, resulting in significant energy loss and high demand for summer cooling and winter heating. It proposes an exterior wall structure for zero-energy buildings that improves the thermal insulation performance of the steel structure exterior walls, reduces energy loss, and thus lowers the demand for summer cooling and winter heating.
[0005] This utility model provides an exterior wall structure for zero-energy buildings, comprising: a steel structure main body, an inner steel structure structure, and an outer steel structure structure.
[0006] The main steel structure includes: a supporting steel plate and a galvanized steel tube; a supporting steel plate is provided on one side of the galvanized steel tube;
[0007] The inner structure of the steel structure includes: gypsum board, horizontal heat insulation pads, horizontal keel, thermal insulation rock wool, vertical heat insulation pads, galvanized steel plate and vertical keel;
[0008] The vertical heat insulation pad is installed on the inner side of the galvanized steel tube;
[0009] The galvanized steel sheet is fixed to the inner side of the galvanized steel tube; the galvanized steel sheet is connected to the supporting steel sheet, horizontal keel, and vertical keel by bolts; the supporting steel sheet is located on the outer side of the galvanized steel sheet; the horizontal keel and vertical keel are located on the inner side of the galvanized steel sheet.
[0010] The horizontal and vertical keels are intersecting and there is a cavity between them; the cavity is filled with insulating rock wool.
[0011] Plasterboard is installed on the outer side of the horizontal and vertical keels; a horizontal heat insulation pad is installed between the horizontal keel and the plasterboard.
[0012] The outer structure of the steel structure includes: aluminum single panel, aluminum foam, first aluminum angle bracket and second aluminum angle bracket; the aluminum single panel is fixed to the outer side of the galvanized steel tube; the aluminum single panel is fixedly connected to the aluminum foam through the first aluminum angle bracket and the second aluminum angle bracket.
[0013] Preferably, a first galvanized angle steel and a second galvanized angle steel are provided on both sides of the galvanized steel tube; the first galvanized angle steel is located inside the second galvanized angle steel.
[0014] Preferably, the first galvanized angle steel and the second galvanized angle steel are both L50*5mm galvanized angle steel.
[0015] Preferably, the horizontal and vertical heat insulation pads are each made of 20mm thick heat insulation pads.
[0016] Preferably, the galvanized steel sheet is a galvanized steel sheet with a thickness of 1.0mm, and the galvanized steel tube is a galvanized steel tube with a thickness of 160*80*5mm.
[0017] Preferably, the supporting steel plate is made of 8mm thick steel plate with a spacing of 1000mm.
[0018] Preferably, the aluminum panel is made of aluminum with a thickness of 1.5mm, and the surface of the aluminum panel is chromated.
[0019] Preferably, a waterproof membrane is provided on the outer side of the aluminum panel;
[0020] The waterproof membrane is a 1.5mm thick TPO waterproof membrane.
[0021] Preferably, the aluminum foam is 10mm thick.
[0022] Preferably, the first aluminum angle bracket is fixed to the aluminum single plate and the galvanized steel tube by screws;
[0023] The second aluminum angle bracket is fixed to the aluminum foam by countersunk screws;
[0024] The first aluminum angle bracket and the second aluminum angle bracket are fixed together.
[0025] This utility model provides an exterior wall structure for zero-energy buildings, comprising a steel main structure, an inner steel structure, and an outer steel structure. The inner steel structure is filled with insulating rock wool and equipped with multiple first and second insulation pads. The outer steel structure is inlaid with aluminum foam. This design improves the thermal insulation performance of the exterior wall of the zero-energy building steel structure, reduces energy loss, and consequently reduces the building's need for summer cooling and winter heating, thus facilitating the achievement of zero-carbon, zero-energy building goals. By arranging first and second insulation pads at locations prone to thermal bridging, heat flow between metal components is blocked, forming a thermal bridging structure that solves the thermal bridging problem, reduces the impact of weak points on the overall thermal performance of the exterior insulation, and is simple to construct and easy to install. This utility model, through multi-layered thermal bridging measures, significantly reduces heat loss caused by direct connections between metal components; simulation calculations show that heat loss at the thermal bridging points is reduced by more than 70%. Attached Figure Description
[0026] Figure 1 This is a cross-sectional view of the exterior wall structure for zero-energy buildings provided by this utility model;
[0027] Figure 2 This is a longitudinal section view of the exterior wall structure for zero-energy buildings provided by this utility model.
[0028] Attached reference numerals: 1. Gypsum board; 2. Horizontal insulation pad; 3. Horizontal keel; 4. Thermal insulation rock wool; 5. Vertical insulation pad; 6. Galvanized steel plate; 7. Bolt; 8. Vertical keel; 9. Supporting steel plate; 10. First galvanized angle steel; 11. Second galvanized angle steel; 12. Galvanized steel tube; 13. Screw; 14. Aluminum single panel; 15. Waterproof membrane; 16. Foamed aluminum; 17. Countersunk screw; 18. First aluminum angle bracket; 19. Second aluminum angle bracket. Detailed Implementation
[0029] To make the technical problems solved by this utility model, the technical solutions adopted, and the technical effects achieved clearer, this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the accompanying drawings, not all of them.
[0030] like Figure 1-2 As shown in the figure, an embodiment of the present invention provides an exterior wall structure for zero-energy buildings, comprising: a steel structure main body, an inner steel structure structure, and an outer steel structure structure.
[0031] The main steel structure includes a supporting steel plate 9 and a galvanized steel tube 12; the supporting steel plate 9 is provided on one side of the galvanized steel tube 12. A first galvanized angle steel 10 and a second galvanized angle steel 11 are provided on both sides of the galvanized steel tube 12; the first galvanized angle steel 10 is located inside the second galvanized angle steel 11. The galvanized steel tube 12 is the main load-bearing component, with the supporting steel plate 9 and the first galvanized angle steel 10 providing the load-bearing connection for the inner structure, and the second galvanized angle steel 11 providing the load-bearing connection for the outer structure.
[0032] The inner structure of the steel structure includes: gypsum board 1, horizontal heat insulation pads 2, horizontal keel 3, thermal insulation rock wool 4, vertical heat insulation pads 5, galvanized steel plate 6, and vertical keel 8. The vertical heat insulation pads 5 are set on the inner side of the galvanized steel tube 12; the vertical heat insulation pads 5 are strip-shaped, and multiple vertical heat insulation pads 5 are arranged longitudinally and at intervals.
[0033] The galvanized steel plate 6 is fixed to the inner side of the galvanized steel tube 12; the galvanized steel plate 6 is connected to the supporting steel plate 9, the horizontal keel 3, and the vertical keel 8 by bolts 7; the supporting steel plate 9 is located on the outer side of the galvanized steel plate 6; the horizontal keel 3 and the vertical keel 8 are located on the inner side of the galvanized steel plate 6.
[0034] The horizontal keel 3 and vertical keel 8 are intersecting and arranged in the same plane, with the horizontal keel 3 located above the vertical keel 8. A cavity exists between the horizontal keel 3 and vertical keel 8, filled with insulating rock wool 4. Gypsum board 1 is installed on the outer side of the horizontal keel 3 and vertical keel 8. A horizontal heat insulation pad 2 is installed between the horizontal keel 3 and the gypsum board 1. The horizontal heat insulation pad 2 is strip-shaped, and multiple horizontal heat insulation pads 2 are arranged horizontally and at intervals.
[0035] The outer structure of the steel structure includes: an aluminum panel 14, aluminum foam 16, a first aluminum angle bracket 18, and a second aluminum angle bracket 19; the aluminum panel 14 is fixed to the outer side of the galvanized steel tube 12; the aluminum panel 14 is fixedly connected to the aluminum foam 16 through the first aluminum angle bracket 18 and the second aluminum angle bracket 19. A waterproof membrane 15 is provided on the outer side of the aluminum panel 14.
[0036] Specifically, the first aluminum angle bracket 18 is fixed to the aluminum single panel 14 and the galvanized steel tube 12 by screws 13; the second aluminum angle bracket 19 is fixed to the foamed aluminum 16 by countersunk screws 17; the first aluminum angle bracket 18 and the second aluminum angle bracket 19 are fixed together.
[0037] In this embodiment, the parameters of each component are as follows: The gypsum board 1 is a 9.5+9.5mm thick gypsum board. The horizontal heat insulation pad 2 and vertical heat insulation pad 5 are each a 20mm thick heat insulation pad. The horizontal keel 3 and vertical keel 8 are both made of light steel. The galvanized steel plate 6 is a 1.0mm thick galvanized steel plate. The bolts 7 are M10*90 stainless steel bolts with spring washers, spaced 1000mm apart. The supporting steel plate 9 is an 8mm thick steel plate, spaced 1000mm apart. The first galvanized angle steel 10 and the second galvanized angle steel 11 are L50*5mm galvanized angle steel. The galvanized steel tube 12 is a 160*80*5mm galvanized steel tube. The screws 13 are M4.2 screws, spaced 250mm apart. The aluminum single panel 14 is a 1.5mm thick aluminum single panel, and the surface of the aluminum single panel 14 is chromated. The waterproof membrane 15 is a 1.5mm thick TPO waterproof membrane (with self-adhesive). The aluminum foam 16 is a 10mm thick aluminum foam, serving as the finishing layer. The countersunk screws 17 are ST4.2*22b stainless steel countersunk screws, spaced 250mm apart. The first aluminum angle bracket 18 is an L30*3mm thick aluminum angle bracket, spaced 250mm apart, with adhesive sealing around the edges. The second aluminum angle bracket 19 is an L30*50*3mm thick aluminum angle bracket, spaced 250mm apart.
[0038] The thermal conductivity of gypsum board 1 is 0.33 W / (m·K); the thermal conductivity of horizontal keel 3 and vertical keel 8 is 58.2 W / (m·K); the thermal conductivity of horizontal insulation pad 2 and vertical insulation pad 5 is 0.055 W / (m·K); the thermal conductivity of insulating rock wool 4 is 0.041 W / (m·K); and the thermal conductivity of galvanized steel plate 6 is 58.2 W / (m·K).
[0039] This utility model discloses a construction process for the exterior wall structure of a zero-energy building:
[0040] After the main steel structure is completed, the external structural connections are made. Specifically, the aluminum panels 14 and waterproof membrane 15 are fixed in sequence, overlapping at the joints of the structural components and sealing with sealant. The aluminum foam 16 of the external structural structure is fixed to the main steel structure using screws 13, countersunk screws 17, first aluminum angle brackets 18, and second aluminum angle brackets 19.
[0041] Next, the internal structure of the steel structure is connected. Specifically, firstly, galvanized steel sheets 6 are laid to form a support for the insulation material and to ensure basic airtightness. The vertical joists 8 and galvanized steel tubes 12 of the internal steel structure are connected by supporting steel plates 9 and bolts 7. Insulating rock wool 4 is filled into the cavities where the vertical joists 8 and horizontal joists 3 intersect, forming an insulation interface. Vertical thermal insulation pads 5 are located between the horizontal joists 3 and the galvanized steel tubes 12, blocking heat flow between the metal components and forming a thermal break bridge. Simultaneously, gypsum board 1 is fixed to the horizontal joists 3, with horizontal thermal insulation pads 2 added in the middle, forming another thermal break bridge.
[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications to the technical solutions described in the foregoing embodiments, or equivalent substitutions for some or all of the technical features, do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. An exterior wall structure for zero-energy buildings, characterized in that, include: The main steel structure, the inner steel structure, and the outer steel structure; The main steel structure includes: a supporting steel plate (9) and a galvanized steel tube (12); the supporting steel plate (9) is provided on one side of the galvanized steel tube (12); The inner structure of the steel structure includes: gypsum board (1), horizontal heat insulation pad (2), horizontal keel (3), heat insulation rock wool (4), vertical heat insulation pad (5), galvanized steel plate (6) and vertical keel (8); The vertical heat insulation pad (5) is set on the inner side of the galvanized steel tube (12); The galvanized steel plate (6) is fixed to the inner side of the galvanized steel tube (12); the galvanized steel plate (6) is connected to the supporting steel plate (9), the horizontal keel (3), and the vertical keel (8) by bolts (7); the supporting steel plate (9) is located on the outer side of the galvanized steel plate (6); the horizontal keel (3) and the vertical keel (8) are located on the inner side of the galvanized steel plate (6); The horizontal keel (3) and the vertical keel (8) are arranged to intersect, and there is a cavity between the horizontal keel (3) and the vertical keel (8); the cavity is filled with thermal insulation rock wool (4); Plasterboard (1) is provided on the outside of the horizontal keel (3) and the vertical keel (8); a horizontal heat insulation pad (2) is provided between the horizontal keel (3) and the plasterboard (1); The outer structure of the steel structure includes: aluminum single panel (14), aluminum foam (16), first aluminum corner bracket (18) and second aluminum corner bracket (19); the aluminum single panel (14) is fixed to the outer side of the galvanized steel tube (12); the aluminum single panel (14) is fixedly connected to the aluminum foam (16) through the first aluminum corner bracket (18) and the second aluminum corner bracket (19).
2. The exterior wall structure for zero-energy buildings according to claim 1, characterized in that, The galvanized steel tube (12) is provided with a first galvanized angle steel (10) and a second galvanized angle steel (11) on both sides; the first galvanized angle steel (10) is located inside the second galvanized angle steel (11).
3. The exterior wall structure for zero-energy buildings according to claim 2, characterized in that, The first galvanized angle steel (10) and the second galvanized angle steel (11) are respectively L50*5mm galvanized angle steel.
4. The exterior wall structure for zero-energy buildings according to claim 1, characterized in that, The horizontal heat insulation pad (2) and the vertical heat insulation pad (5) are each made of 20mm thick heat insulation pads.
5. The exterior wall structure for zero-energy buildings according to claim 1, characterized in that, The galvanized steel sheet (6) is a galvanized steel sheet with a thickness of 1.0 mm, and the galvanized steel tube (12) is a galvanized steel tube with a thickness of 160*80*5 mm.
6. The exterior wall structure for zero-energy buildings according to claim 1, characterized in that, The supporting steel plate (9) is made of 8mm thick steel plate with a spacing of 1000mm.
7. The exterior wall structure for zero-energy buildings according to claim 1, characterized in that, The aluminum single panel (14) is made of aluminum single panel with a thickness of 1.5mm, and the surface of the aluminum single panel (14) is chromated.
8. The exterior wall structure for zero-energy buildings according to claim 7, characterized in that, Waterproof membrane (15) is provided on the outside of the aluminum single panel (14); The waterproof membrane (15) is a 1.5mm thick TPO waterproof membrane.
9. The exterior wall structure for zero-energy buildings according to claim 1, characterized in that, The aluminum foam (16) is 10 mm thick.
10. The exterior wall structure for zero-energy buildings according to claim 1, characterized in that, The first aluminum angle bracket (18) is fixed to the aluminum single panel (14) and the galvanized steel tube (12) by screws (13); The second aluminum angle bracket (19) is fixed to the aluminum foam (16) by countersunk screws (17); The first aluminum corner bracket (18) and the second aluminum corner bracket (19) are fixed together.