A BIM-based energy-saving building envelope system

Abstract

This utility model relates to the field of building envelope technology, and in particular to a BIM-based energy-saving building envelope system, comprising a roof assembly and a wall assembly. The roof assembly includes an outer roof panel and an inner roof panel, with a first insulation layer and spaced-apart brackets between them. The wall assembly includes an outer wall panel and an inner wall panel, with a second insulation layer between them. The inner roof panel is mounted on the main roof purlin, which is mounted on a steel beam. The inner roof panel, outer roof panel, inner wall panel, and outer wall panel are all purlin structures. The roof assembly and wall assembly are fixed together by connecting components, thus solving the problem of poor thermal insulation performance.

Description

Technical Field

[0001] This utility model relates to the field of building envelope technology, and in particular to a BIM-based energy-saving building envelope system. Background Technology

[0002] Building Information Modeling (BIM) is a method of building construction that uses data and information related to a building project as a foundation to create a building model. It simulates the building's actual structure using digital information. The building envelope refers to the parts of the building that come into contact with the outside air, such as the roof and exterior walls. As the main components of the building envelope, the roof and exterior walls are also the primary points of energy transfer between the interior and exterior. To reduce energy loss from air conditioning and achieve energy conservation and emission reduction, insulation panels are typically installed on the exterior of the foundation walls. However, existing BIM-based building envelopes have many shortcomings in terms of thermal insulation. Their insulation effect is limited and easily affected by environmental factors, with significant performance degradation over long-term use. Furthermore, traditional building envelopes often suffer from relatively rough construction processes and insufficiently tight connections between components, leading to frequent thermal bridging. Heat is lost through these weak points, severely impacting the building's thermal insulation performance and failing to meet the energy-saving requirements throughout the building's entire lifecycle.

[0003] Therefore, a BIM-based energy-saving building envelope system is needed to improve thermal insulation performance. Utility Model Content

[0004] To address the problem of poor thermal insulation performance, this utility model provides a BIM-based energy-saving building envelope system.

[0005] This utility model provides a BIM-based energy-saving building envelope system, including a roof assembly and a wall assembly. The roof assembly includes an outer roof panel and an inner roof panel, with an insulation layer between the outer and inner roof panels and spaced-apart brackets. The wall assembly includes an outer wall panel and an inner wall panel, with a second insulation layer between them. The inner roof panel is mounted on the main roof purlin, which is mounted on a steel beam. The inner roof panel, outer roof panel, inner wall panel, and outer wall panel are all purlin structures. The roof assembly and wall assembly are fixed together by connecting components.

[0006] Furthermore, the insulation layer one includes a rock wool board one disposed on the upper surface of the inner panel of the roof, a waterproof and breathable membrane one covering the upper surface of the rock wool board one, a fiber-reinforced cement board one disposed on the upper surface of the waterproof and breathable membrane, and a rock wool board two disposed on the upper surface of the fiber-reinforced cement board.

[0007] Furthermore, the second insulation layer includes an OSB structural board disposed on the outer side of the inner wall panel, a rock wool board three disposed on the outer side of the OSB structural board, a waterproof and breathable membrane two disposed on the outer side of the rock wool board three, and a fiber-reinforced cement board two disposed on the outer side of the waterproof and breathable membrane two.

[0008] Furthermore, the upper surface of the rock wool board is covered with a PVC waterproof layer.

[0009] Furthermore, the inner roof panel is fixed to the main purlin by a fixing assembly, which includes an inverted T-shaped steel plate fixed to the main purlin by bolts, and U-shaped steel plates fixed to both sides of the inverted T-shaped steel plate by bolts. The inner roof panel is fixedly connected to the U-shaped steel plate.

[0010] Furthermore, the ends of the inner roof panel and the outer roof panel are provided with fastening components, the fastening components including fastening steel plates wrapped around the ends of the inner roof panel and the outer roof panel, fastening nails passing through the fastening steel plates, and the tail ends of the fastening nails being placed inside the insulation layer.

[0011] Furthermore, the connecting assembly includes connecting frames disposed at both ends of the insulation layer, and the connecting frames are fixed and locked to the fastening steel plates by fastening nails.

[0012] Furthermore, the connecting brackets are spaced apart between the inner wall panel and the outer wall panel.

[0013] Furthermore, the inner roof panel, outer roof panel, inner wall panel, and outer wall panel all have crest surfaces, slopes, and trough surfaces, wherein the slopes and crest surfaces, and the slopes and trough surfaces form an outer hollow layer facing outwards and an inner hollow layer facing inwards.

[0014] Furthermore, the inner roof panel, outer roof panel, inner wall panel, and outer wall panel are spliced ​​together by an overlapping structure. The overlapping structure includes splicing adjacent inner roof panels, outer roof panels, inner wall panels, or outer wall panels through contacting crest surfaces, slopes, and trough surfaces.

[0015] In summary, this utility model has the following beneficial technical effects:

[0016] 1. This utility model proposes a BIM-based building envelope energy-saving system with outstanding thermal insulation performance. The excellent thermal insulation performance of rock wool board, the waterproof and breathable balance of waterproof membrane, the robust protection of fiber-reinforced cement board, and the stable support of OSB structural board improve the overall thermal insulation capacity and effectively reduce heat transfer between indoors and outdoors. The inner roof panel, outer roof panel, inner wall panel, and outer wall panel form an inner hollow layer, which not only increases the air insulation layer, but also further prevents heat conduction due to the low thermal conductivity of air.

[0017] 2. This utility model has waterproof and moisture-proof properties. The waterproof and breathable membrane 1 in the first insulation layer and the waterproof and breathable membrane 2 in the second insulation layer can effectively block external moisture from entering the insulation layer, while allowing internal moisture to escape, thus avoiding the performance degradation of the insulation material due to moisture accumulation. The PVC waterproof layer covering the upper surface of the rock wool board 2 further enhances the waterproof capability of the roof, extends the service life of the insulation layer, and ensures a long-term stable thermal insulation effect.

[0018] 3. This utility model possesses reliable and stable strength. The roof assembly and wall assembly are connected to the fastening steel plate by a connecting frame, which is fixed and locked together. The connecting frame is spaced between the inner and outer wall panels, ensuring the overall structural stability. The inner roof panel, outer roof panel, inner wall panel, and outer wall panel are spliced ​​together using an overlapping structure with contacting crests, slopes, and troughs, increasing the contact area, improving connection strength, and reducing gaps to minimize heat loss. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a BIM-based building envelope energy-saving system according to an embodiment of the present invention.

[0020] Figure 2 This is another structural schematic diagram of a BIM-based building envelope energy-saving system according to an embodiment of this utility model.

[0021] Figure 3 This is a front view of a BIM-based building envelope energy-saving system according to an embodiment of this utility model.

[0022] Figure 4 This is an embodiment of the present utility model. Figure 3 A magnified view of part A in the image.

[0023] Figure 5 This is a schematic diagram of the spliced ​​structure in the implementation of this utility model.

[0024] The components include: 1. Roofing components; 101. Outer roof panel; 102. Inner roof panel; 103. Z-shaped bracket; 2. Insulation layer one; 201. Rock wool board one; 202. Waterproof and breathable membrane one; 203. Fiber reinforced cement board one; 204. Rock wool board two; 205. PVC waterproof layer; 3. Wall assembly; 301. Outer wall panel; 302. Inner wall panel; 4. Insulation layer two; 401. OSB structure. 402. Roofing board; 403. Rock wool board 3; 404. Waterproof and breathable membrane 2; 405. Fiber reinforced cement board 2; 5. Roof purlin; 501. Steel beam; 6. Connecting components; 601. Connecting frame; 7. Fixing components; 701. Inverted T-shaped steel plate; 702. U-shaped steel plate; 8. Fastening components; 801. Fastening steel plate; 802. Fastening nail; 9. Corrugated surface; 901. Sloping surface; 902. Corrugated trough surface. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings.

[0026] Example 1

[0027] Reference Figure 1 , Figure 2 and Figure 3 This embodiment of a BIM-based building envelope energy-saving system includes a roof assembly 1 and three wall assemblies. The roof assembly 1 includes an outer roof panel 101 and an inner roof panel 102, with an insulation layer 2 between the outer roof panel 101 and the inner roof panel 102, and spaced-apart brackets 103. The three wall assemblies include an outer wall panel 301 and an inner wall panel 302, with an insulation layer 4 between the outer wall panel 301 and the inner wall panel 302. The inner roof panel 102 is mounted on a main roof purlin 5, which is mounted on a steel beam 501. The inner roof panel 102, the outer roof panel, the inner wall panel 302, and the outer wall panel 301 are all purlin structures. The roof assembly 1 and the three wall assemblies are fixed by connecting components 6.

[0028] Reference Figure 3 The insulation layer 2 includes a rock wool board 201 disposed on the upper surface of the inner roof panel 102, a waterproof and breathable membrane 202 covering the upper surface of the rock wool board 201, a fiber-reinforced cement board 203 disposed on the upper surface of the waterproof and breathable membrane, and a second rock wool board 204 disposed on the upper surface of the fiber-reinforced cement board. The upper surface of the second rock wool board 204 is covered with a PVC waterproof layer 205. The waterproof and breathable membranes 202 and 203 are made of spunbond polyethylene, which has good flexibility and durability, ensuring a certain physical strength without affecting breathability and waterproof performance.

[0029] Rock wool board 201 possesses excellent thermal insulation properties, effectively preventing indoor heat loss to the outside through the roof and reducing heat transfer. Waterproof and breathable membrane 202, on the one hand, blocks external rainwater and moisture from penetrating into the insulation layer, protecting the internal insulation material from moisture; on the other hand, it allows moisture generated by temperature changes within the insulation layer to escape, maintaining the dryness of the insulation material. Fiber-reinforced cement board 203 provides robust protection, enhancing the structural strength of insulation layer 2, preventing damage to the upper rock wool board 204 from external forces, and also providing some protection to the waterproof and breathable membrane 202. Rock wool board 204 further strengthens the roof's thermal insulation effect, working in conjunction with rock wool board 201 to reduce heat transfer. Its surface is covered with a PVC waterproof layer, greatly enhancing the roof's waterproofing ability, preventing rainwater from penetrating to the lower structure, and extending the service life of the entire roof insulation structure.

[0030] The Z-shaped brackets 103 are spaced between the outer roof panel 101 and the inner roof panel 102 to provide support and ensure the stability of the space between the outer roof panel 101 and the inner roof panel 102. The outer wall panel 301 has a similar function to the outer roof panel 101, resisting damage to the wall from the external environment. Together, they enclose the wall space and cooperate with the roof component 1 to construct the building's enclosure structure.

[0031] Reference Figure 3 The second insulation layer 4 includes an OSB structural board 401 disposed on the outside of the inner wall panel 302, a rock wool board 402 disposed on the outside of the OSB structural board 401, a waterproof and breathable membrane 403 disposed on the outside of the rock wool board 402, and a fiber-reinforced cement board 404 disposed on the outside of the waterproof and breathable membrane 403.

[0032] OSB structural board 401 provides stable support for the wall insulation structure, possessing good strength and stability, ensuring the overall structural stability of insulation layer 4. Rock wool board 402 provides thermal insulation in the wall section, reducing heat exchange between the indoor and outdoor areas through the wall. Waterproof and breathable membrane 403 functions similarly to waterproof and breathable membrane 202, balancing waterproofing and breathability in the wall insulation layer, ensuring that the insulation performance of rock wool board 402 is not affected by moisture. Fiber-reinforced cement board 404 protects the wall insulation layer, enhancing the strength and durability of the wall insulation structure.

[0033] Fiber-reinforced cement board 203 is made of silicate cement as the base material and reinforced with alkali-resistant glass fiber and other materials, exhibiting good impermeability and thermal insulation properties. OSB structural board is made of oriented wood shavings through hot pressing, resulting in a dense internal structure and excellent mechanical properties.

[0034] Reference Figure 4 The inner roof panel 102 is fixed to the main purlin by a fixing component 7. The fixing component 7 includes an inverted T-shaped steel plate 701 fixed to the main purlin by bolts, and U-shaped steel plates 702 fixed to both sides of the inverted T-shaped steel plate 701 by bolts. The inner roof panel 102 is fixedly connected to the U-shaped steel plate 702.

[0035] The inverted T-shaped steel plate is fixed to the main purlin with bolts, providing a basic connection point for fixing the inner roof panel 102. Its shape design facilitates cooperation with the U-shaped steel plate 702 to jointly fix the inner roof panel 102.

[0036] The inverted T-shaped steel plate 701 is connected to the U-shaped steel plate 702 on both sides by bolts, and the roof inner panel 102 is fixedly connected in the middle. Together with the inverted T-shaped steel plate 701, the roof inner panel 102 is firmly fixed to the main purlin.

[0037] Reference Figure 1 and Figure 3The ends of the inner roof panel 102 and the outer roof panel are provided with fastening components 8. The fastening components 8 include fastening steel plates 801 wrapped around the ends of the inner roof panel 102 and the outer roof panel, fastening nails 802 passing through the fastening steel plates 801, and the tail ends of the fastening nails 802 being placed inside the insulation layer 2.

[0038] The fastening steel plate 801 is wrapped around the ends of the inner roof panel 102 and the outer roof panel. The fastening nail 802 passes through the fastening steel plate 801 and places its tail end inside the insulation layer 2, which serves to fasten the ends of the inner roof panel 102 and the outer roof panel, protects the ends, and ensures the airtightness of the roof structure.

[0039] The connecting component 6 includes a connecting frame 601 disposed at the end of the second insulation layer 4, and the connecting frame 601 is fixed and locked to the fastening steel plate 801 by fastening nails 802.

[0040] The connecting frame 601 is spaced apart between the inner wall panel 302 and the outer wall panel 301.

[0041] The connecting frame 601 is set at the end of the insulation layer 4 and is fixed and locked to the fastening steel plate 801 by fastening nails 802 to realize the connection between the roof component 1 and the wall component 3. At the same time, it is spaced between the inner wall panel 302 and the outer wall panel 301 to enhance the connection stability of the wall structure.

[0042] Reference Figure 5 The inner roof panel 102, the outer roof panel, the inner wall panel 302, and the outer wall panel 301 all have a crest surface 9, a slope surface, and a trough surface, wherein the slope surface and the crest surface 9, and the slope surface and the trough surface form an outer hollow layer facing outward and an inner hollow layer facing inward.

[0043] Reference Figure 5 The roof inner panel 102, roof outer panel, wall inner panel 302 and wall outer panel 301 are spliced ​​together by an overlapping structure. The overlapping structure includes two adjacent roof inner panels 102, roof outer panels, wall inner panels 302 or wall outer panels 301 being spliced ​​together by contacting crest surfaces 9, slopes and trough surfaces, and fixed by bolts.

[0044] During splicing, adjacent panels are joined by contacting each other through the crest surface 9, slope surface and trough surface, which increases the contact area and reduces gaps.

[0045] Installation steps:

[0046] First, install the main roof purlin 5 onto the steel beam 501, ensuring that the installation is firm and the position is accurate, so as to provide basic support for the subsequent roof structure installation.

[0047] The inner roof panel 102 is fixed to the main purlin using the fixing component 7. Specifically, the inverted T-shaped steel plate 701 is first fixed to the main purlin with bolts, then the U-shaped steel plate 702 is fixed to both sides of the inverted T-shaped steel plate with bolts, and finally the inner roof panel 102 is fixedly connected to the U-shaped steel plate 702.

[0048] Install the Z-shaped brackets 103 on the inner roof panel 102, ensuring that the Z-shaped brackets 103 are evenly spaced. Then, lay rock wool board 201, waterproof and breathable membrane 202, fiber reinforced cement board 203 and rock wool board 204 on the upper surface of the inner roof panel 102 in sequence. During the laying process, pay attention to the tight fit between each layer to ensure that there are no gaps and to ensure the integrity and insulation effect of the insulation layer 2.

[0049] Install fastening components 8 at the ends of the inner roof panel 102 and the outer roof panel. Wrap the fastening steel plate 801 around the ends of the inner roof panel 102 and the outer roof panel, and then use fastening nails 802 to pass through the fastening steel plate 801, placing the tail end of the fastening nails 802 inside the insulation layer 2 to fasten the ends of the inner roof panel 102 and the outer roof panel.

[0050] When installing the second insulation layer 4, the connecting brackets 601 are spaced apart between the inner wall panel 302 and the outer wall panel 301. The fastening steel plate 801 of the roof assembly 1 is aligned with the connecting brackets 601 at the end of the second insulation layer 4 of the wall assembly 3. The connecting brackets 601 and the fastening steel plate 801 are fixed and locked with fastening nails 802 to complete the connection between the roof assembly 1 and the wall assembly 3. On the outside of the inner wall panel 302, the OSB structural board 401, rock wool board 402, waterproof and breathable membrane 403, and fiber reinforced cement board 404 are installed in sequence to form the second insulation layer 4. During the installation process, each layer must be tightly adhered.

[0051] The inner roof panels 102, outer roof panels, inner wall panels 302, and outer wall panels 301 are spliced ​​together using an overlapping structure, that is, adjacent panels are spliced ​​together by contacting the crest surfaces 9, slopes, and trough surfaces. After splicing, a comprehensive inspection of the entire BIM-based building envelope energy-saving system is carried out to ensure that all components are firmly installed, tightly connected, and free from looseness, gaps, or other problems, ensuring that the system's thermal insulation, waterproofing, and structural stability performance meet the design requirements.

[0052] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A BIM-based building energy saving envelope system, characterized in that, The system includes a roof assembly (1) and a wall assembly (3). The roof assembly (1) includes an outer roof panel (101) and an inner roof panel (102), with an insulation layer (2) between the outer roof panel (101) and the inner roof panel (102), and spaced-apart brackets (103). The wall assembly (3) includes an outer wall panel (301) and an inner wall panel (302). A second insulation layer (4) is provided between the roof inner panel (102) and the wall inner panel (302). The roof inner panel (102) is set on the roof main purlin (5). The roof main purlin (5) is set on the steel beam (501). The roof inner panel (102), the roof outer panel, the wall inner panel (302) and the wall outer panel (301) are all purlin structures. The roof component (1) and the wall component (3) are fixed by the connecting component (6).

2. The BIM-based building energy saving envelope system according to claim 1, characterized in that, The insulation layer 1 (2) includes a rock wool board 1 (201) disposed on the upper surface of the roof inner panel (102), a waterproof and breathable membrane 1 (202) covering the upper surface of the rock wool board 1 (201), a fiber-reinforced cement board 1 (203) disposed on the upper surface of the waterproof and breathable membrane, and a rock wool board 2 (204) disposed on the upper surface of the fiber-reinforced cement board.

3. The BIM-based building energy saving envelope system according to claim 1, wherein, The second insulation layer (4) includes an OSB structural board (401) disposed on the outside of the inner wall panel (302), a rock wool board (402) disposed on the outside of the OSB structural board (401), a waterproof and breathable membrane (403) disposed on the outside of the rock wool board (402), and a fiber-reinforced cement board (404) disposed on the outside of the waterproof and breathable membrane (403).

4. The BIM-based building energy saving envelope system according to claim 2, wherein, The upper surface of the rock wool board 2 (204) is covered with a PVC waterproof layer (205).

5. The BIM-based building envelope energy-saving system according to claim 1, characterized in that, The roof inner panel (102) is fixed to the main purlin by a fixing component (7). The fixing component (7) includes an inverted T-shaped steel plate (701) fixed to the main purlin by bolts, and U-shaped steel plates (702) fixed to both sides of the inverted T-shaped steel plate (701) by bolts. The roof inner panel (102) is fixedly connected to the U-shaped steel plate (702).

6. The BIM-based building energy saving envelope system of claim 1, wherein, The ends of the inner roof panel (102) and the outer roof panel are provided with fastening components (8). The fastening components (8) include fastening steel plates (801) wrapped around the ends of the inner roof panel (102) and the outer roof panel, and fastening nails (802) passing through the fastening steel plates (801). The tail end of the fastening nails (802) is placed inside the insulation layer (2).

7. The BIM-based building energy saving envelope system according to claim 6, characterized in that, The connecting component (6) includes a connecting frame (601) disposed at the end of the second insulation layer (4), and the connecting frame (601) and the fastening steel plate (801) are fixed and locked together by fastening nails (802).

8. The BIM-based building energy saving envelope system according to claim 7, characterized in that, The connecting frame (601) is spaced apart between the inner wall panel (302) and the outer wall panel (301).

9. The BIM-based building energy saving envelope system of claim 1, wherein, The inner roof panel (102), outer roof panel, inner wall panel (302), and outer wall panel (301) all have a crest surface (9), a slope surface, and a trough surface, wherein the slope surface and the crest surface (9) and the slope surface and the trough surface form an outer hollow layer facing outward and an inner hollow layer facing inward.

10. The BIM-based building energy saving envelope system according to claim 9, characterized in that, The roof inner panel (102), roof outer panel, wall inner panel (302) and wall outer panel (301) are spliced ​​by an overlapping structure. The overlapping structure includes two adjacent roof inner panels (102), roof outer panels, wall inner panels (302) or wall outer panels (301) being spliced ​​by contacting each other's crest surfaces (9), slopes and trough surfaces.

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