Near-zero-energy-consumption public building roof structure

Abstract

A near-zero-energy-consumption public building roof structure belongs to the technical field of building roof structures and comprises a structural layer, a vapor barrier layer, a thermal insulation layer, a waterproof layer, a protective layer and a decorative layer which are sequentially laid on a building body. The heat preservation layer comprises an extruded polystyrene board and XPS silicon-calcium composite boards, the XPS silicon-calcium composite boards are arranged on the top face of the extruded polystyrene board, the bottom faces of the XPS silicon-calcium composite boards are connected with the top face of the extruded polystyrene board through mucilage glue, and gaps between the adjacent XPS silicon-calcium composite boards are filled with silicone adhesive. As the calcium silicate board part of the XPS calcium silicate composite board has strength, the XPS calcium silicate composite board can replace a leveling layer in an existing upright structure roof, the situation that the leveling layer cracks does not exist, the silicone adhesive is filled in the gap between the adjacent XPS calcium silicate composite boards, the silicone adhesive plays a role in sealing the gap, and therefore the sealing performance of the XPS calcium silicate composite board is improved. Rainwater can be prevented from permeating into the extruded polystyrene board through gaps, the extruded polystyrene board is prevented from being soaked in water, and therefore the heat preservation effect of the extruded polystyrene board is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of building roof structures, and in particular to a nearly zero-energy consumption public building roof structure. Background Art

[0002] In November 2015, my country's Ministry of Housing and Urban-Rural Development officially issued the "Technical Guidelines for Passive Ultra-low Energy Green Buildings", which formally defined the definition of passive ultra-low energy green buildings: "Passive ultra-low energy green buildings refer to buildings that adapt to climate characteristics and natural conditions, use enclosure structures with higher thermal insulation and airtightness, use high-efficiency fresh air heat recovery technology, minimize the demand for building heating and cooling, and make full use of renewable energy to provide a comfortable indoor environment with less energy consumption and meet the basic requirements of green buildings." The "30-30-30" goal of the development of China's near-zero energy public buildings was discussed. It is hoped that by 2030, ultra-low energy buildings in my country can account for 30% of the newly built construction area, 30% of existing buildings will be transformed into ultra-low energy buildings, and renewable energy energy can account for 30% of building energy consumption.

[0003] Roofing plays a vital role in achieving near-zero energy public buildings. Efficient roofing structures can significantly reduce the energy consumption of buildings. It is not only a key component of building energy efficiency, but also an important factor in improving the environmental adaptability, aesthetics and ecological contribution of buildings. There are two types of traditional building roof structures at present, one is the upright structure and the other is the inverted structure. The upright structure is to build the waterproof layer on the insulation layer, on the contrary, the inverted roof is to build the waterproof layer under the insulation layer. The advantage of the upright structure is that the insulation layer is protected by the waterproof layer, and because the insulation layer is in good working condition, the insulation effect is also good; it is suitable for all climate zones. The advantage of the inverted roof structure is that the waterproof layer is protected by the insulation layer, and the working condition of the waterproof layer is better, which is conducive to the durable use of the waterproof layer.

[0004] In the upright structural roof, from bottom to top, it mainly includes the structural layer, vapor barrier layer, thermal insulation layer, leveling layer, waterproof layer, protective layer and decorative layer. The thermal insulation layer mainly uses thermal insulation board, which is laid flat on the vapor barrier layer, and then a layer of mortar is made on the thermal insulation board to form a leveling layer. The leveling layer plays a role in protecting the thermal insulation board from damage by rain and external forces.

[0005] However, since the surface of the structural layer itself is uneven, it is difficult to ensure that the insulation board is completely in close contact with the surface of the structural layer when laying the insulation layer. Therefore, during subsequent construction, if construction workers stand on the insulation board or walk back and forth on the insulation board, it will easily cause the insulation board to partially warp, affecting the overall surface layer and easily causing the leveling layer to crack. In addition, when making mortar on the insulation board, a separation gap needs to be left. This gap needs to wait for a period of time for the mortar to solidify before it can be filled with waterproof materials. If it rains during this period, rainwater will penetrate into the insulation board from the separation gap, causing the insulation board to be soaked in water, affecting the insulation effect of the insulation board. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a nearly zero-energy public building roof structure which does not have the situation of cracking of the leveling layer and can avoid causing the insulation board to be soaked in water and affecting the insulation effect of the insulation board.

[0007] The technical solution adopted by the present invention to solve its technical problems is: a nearly zero-energy public building roof structure, including a structural layer, a vapor barrier layer, an insulation layer, a waterproof layer, a protective layer and a decorative layer sequentially laid on the building body, the insulation layer includes an extruded polystyrene board and an XPS calcium silicon composite board, the XPS calcium silicon composite board is arranged on the top surface of the extruded polystyrene board, the bottom surface of the XPS calcium silicon composite board is connected to the top surface of the extruded polystyrene board by adhesive, and the gaps between adjacent XPS calcium silicon composite boards are filled with silicone adhesive.

[0008] Furthermore, the structural layer includes a reinforced concrete roof panel and a cement mortar leveling layer, the reinforced concrete roof panel is arranged on the building body, and the cement mortar leveling layer is arranged on the top surface of the reinforced concrete roof panel.

[0009] Furthermore, the vapor barrier layer includes a first waterproof membrane, the first waterproof membrane is laid on the top surface of the cement mortar leveling layer, and the extruded polystyrene board is arranged on the top surface of the first waterproof membrane.

[0010] Furthermore, the waterproof layer includes a waterproof coating layer, a second waterproof roll and a non-woven fabric layer. The waterproof coating layer is arranged on the surface of the XPS silicon-calcium composite board, the second waterproof roll is laid on the top surface of the waterproof coating layer, and the non-woven fabric layer is laid on the top surface of the second waterproof roll.

[0011] Furthermore, the protective layer comprises a fine stone concrete layer, and the fine stone concrete layer is arranged on the top surface of the non-woven fabric layer.

[0012] Furthermore, a steel mesh is arranged in the fine stone concrete layer.

[0013] Furthermore, the decorative layer comprises a fine stone concrete pressed membrane roof, and the fine stone concrete pressed membrane roof is laid on the top surface of the fine stone concrete layer.

[0014] Furthermore, the extruded polystyrene board is a flame retardant extruded polystyrene board.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The near-zero energy consumption public building roof structure provided by the present invention forms a thermal insulation layer by bonding an XPS calcium silicon composite board to the top surface of an extruded polystyrene board. During subsequent construction, since the calcium silicon board part of the XPS calcium silicon composite board itself has strength, it can replace the leveling layer in the existing upright structural roof, and there is no situation of cracking of the leveling layer. Moreover, after the XPS calcium silicon composite board is laid, silicone glue can be immediately filled in the gap between adjacent XPS calcium silicon composite boards. The silicone glue plays a role in sealing the gap, which can prevent rainwater from penetrating into the extruded polystyrene board through the gap, avoid the extruded polystyrene board from being soaked in water, and thus ensure the thermal insulation effect of the extruded polystyrene board. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 It is a structural schematic diagram of a nearly zero-energy public building roof structure provided by the present invention; Explanation of reference numerals: 10, structural layer; 20, vapor barrier layer; 30, thermal insulation layer; 40, waterproof layer; 50, protective layer; 60, decorative layer. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution in the present invention will be described in more detail below in conjunction with the accompanying drawings and preferred embodiments. The described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on this embodiment, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Reference Figure 1 The nearly zero-energy public building roof structure includes a structural layer 10, a vapor barrier layer 20, an insulation layer 30, a waterproof layer 40, a protective layer 50 and a decorative layer 60 sequentially laid on the main body of the building, the insulation layer 30 includes an extruded polystyrene board and an XPS calcium silicon composite board, the XPS calcium silicon composite board is arranged on the top surface of the extruded polystyrene board, the bottom surface of the XPS calcium silicon composite board is connected to the top surface of the extruded polystyrene board by adhesive, and the gaps between adjacent XPS calcium silicon composite boards are filled with silicone adhesive.

[0020] The near-zero energy consumption public building roof structure described in this embodiment forms an insulation layer 30 by bonding an XPS calcium silicon composite board to the top surface of the extruded polystyrene board. During subsequent construction, since the calcium silicon board portion of the XPS calcium silicon composite board itself has strength, it can replace the leveling layer in the existing upright structural roof, and there is no cracking of the leveling layer. Moreover, after the XPS calcium silicon composite board is laid, silicone glue can be immediately filled in the gap between adjacent XPS calcium silicon composite boards. The silicone glue plays a role in sealing the gap, which can prevent rainwater from penetrating into the extruded polystyrene board through the gap, and avoid the extruded polystyrene board from being soaked in water, thereby ensuring the insulation effect of the extruded polystyrene board.

[0021] In this embodiment, the extruded polystyrene board is a flame retardant extruded polystyrene board. The thickness of the extruded polystyrene board is 70 mm, and the thickness of the XPS calcium silicon composite board is 78 mm. Of course, other thicknesses can also be selected in combination with the building energy-saving design.

[0022] In this embodiment, the structural layer 10 includes a reinforced concrete roof panel and a cement mortar leveling layer, wherein the reinforced concrete roof panel is arranged on the main body of the building, and the cement mortar leveling layer is arranged on the top surface of the reinforced concrete roof panel. The cement mortar leveling layer adopts 20mm thick 1:2.5 cement leveling with a slope of 0.5%.

[0023] In this embodiment, the vapor barrier 20 includes a first waterproof membrane, which is laid on the top surface of the cement mortar leveling layer, and the extruded polystyrene board is arranged on the top surface of the first waterproof membrane. The first waterproof membrane is a 1.5 mm thick self-adhesive polymer modified asphalt waterproof membrane (without tire).

[0024] In this embodiment, the waterproof layer 40 includes a waterproof coating layer, a second waterproof roll and a non-woven fabric layer. The waterproof coating layer is arranged on the surface of the XPS calcium-silicon composite board, the second waterproof roll is laid on the top surface of the waterproof coating layer, and the non-woven fabric layer is laid on the top surface of the second waterproof roll. The waterproof coating layer adopts a 2.0 mm thick non-curing rubber asphalt waterproof coating, and the second waterproof roll adopts a 2.0 mm thick polymer self-adhesive waterproof roll. The non-woven fabric layer adopts a 1.2 mm thick dry-laid polyester non-woven fabric.

[0025] In this embodiment, the protective layer 50 includes a fine stone concrete layer, which is arranged on the top surface of the non-woven fabric layer. The fine stone concrete layer is made of 40 mm thick C20 fine stone concrete with 4@100 bidirectional steel mesh.

[0026] In this embodiment, the decorative layer 60 includes a fine stone concrete membrane roof, which is laid on the top surface of the fine stone concrete layer. The fine stone concrete membrane roof adopts a 50mm thick C20 fine stone concrete membrane roof (with corundum added).

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the present invention.

Claims

1. Nearly zero energy consumption public building roof structure, characterized by: The invention comprises a structural layer, a vapor barrier layer, an insulating layer, a waterproof layer, a protective layer and a decorative layer which are sequentially laid on the main body of the building. The insulating layer comprises an extruded polystyrene board and an XPS calcium-silicon composite board. The XPS calcium-silicon composite board is arranged on the top surface of the extruded polystyrene board. The bottom surface of the XPS calcium-silicon composite board is connected to the top surface of the extruded polystyrene board by adhesive. The gaps between adjacent XPS calcium-silicon composite boards are filled with silicone adhesive.

2. The near-zero energy consumption public building roof structure according to claim 1 is characterized in that: The structural layer comprises a reinforced concrete roof panel and a cement mortar leveling layer. The reinforced concrete roof panel is arranged on the building body, and the cement mortar leveling layer is arranged on the top surface of the reinforced concrete roof panel.

3. The near-zero energy consumption public building roof structure according to claim 2 is characterized in that: The vapor barrier layer comprises a first waterproof coiled material, the first waterproof coiled material is laid on the top surface of the cement mortar leveling layer, and the extruded polystyrene board is arranged on the top surface of the first waterproof coiled material.

4. The nearly zero-energy public building roof structure according to claim 1, 2 or 3, characterized in that: The waterproof layer includes a waterproof coating layer, a second waterproof coiled material and a non-woven fabric layer. The waterproof coating layer is arranged on the surface of the XPS silicon-calcium composite board, the second waterproof coiled material is laid on the top surface of the waterproof coating layer, and the non-woven fabric layer is laid on the top surface of the second waterproof coiled material.

5. The nearly zero-energy public building roof structure according to claim 4 is characterized in that: The protective layer comprises a fine stone concrete layer, and the fine stone concrete layer is arranged on the top surface of the non-woven fabric layer.

6. The near-zero energy consumption public building roof structure according to claim 5 is characterized in that: A steel mesh is arranged in the fine stone concrete layer.

7. The near-zero energy consumption public building roof structure according to claim 5 is characterized by: The decorative layer comprises a fine stone concrete membrane roof, and the fine stone concrete membrane roof is laid on the top surface of the fine stone concrete layer.

8. The near-zero energy consumption public building roof structure according to claim 1, 2 or 3, characterized in that: The extruded polystyrene board is a flame retardant extruded polystyrene board.

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