Composite thermal insulation wall

Abstract

The utility model relates to a composite thermal insulation wall which comprises an outer wall surface, an inner wall surface and a middle thermal insulation layer, the outer wall surface and the inner wall surface are formed by splicing autoclaved aerated concrete slabs, and the composite thermal insulation wall is characterized in that the autoclaved aerated concrete slabs are respectively spliced and fixed on the outer side and the inner side of a heavy steel structure frame to form the outer wall surface and the inner wall surface; the heat preservation layer is a polyurethane foaming layer which is foamed on site, and the outer wall face and the inner wall face are bonded into a whole through the polyurethane foaming layer. The heavy steel structure is adopted as a framework of the wall body, the autoclaved aerated concrete plates are spliced and fixed on the inner side and the outer side of the heavy steel structure, and polyurethane is adopted for foaming on site in the middle of the heavy steel structure, so that the autoclaved aerated concrete plates become a heat preservation layer without any joints, and the wall body is better in heat preservation effect and better in fireproof and sound insulation effect. Due to the fact that the heavy steel structure serves as a framework of the wall body, the composite heat preservation wall body is high in strength, good in anti-seismic performance and capable of serving as a load-bearing outer wall of a civil building.

Description

Technical Field

[0001] The utility model relates to the technical field of construction, in particular to a composite thermal insulation wall. Background Art

[0002] In northern my country, due to the low temperature in winter, houses need to be insulated. Whether it is exterior wall insulation or interior wall insulation, insulation boards are generally pasted on the surface of brick walls and then covered with a surface decorative layer. In order to improve the efficiency of house construction, it has become a trend for modern buildings to be completed in an assembled manner, avoiding or reducing the use of cement mortar, etc. on site, thereby ensuring efficient and fast construction sites. The Chinese patent "A kind of autoclaved aerated concrete composite insulation exterior partition board" (ZL202223142762.4) discloses a wall panel body composed of an inner wall panel, an outer wall panel and an insulation layer, wherein the inner wall panel and the outer wall panel are both autoclaved aerated concrete panels, and a positioning and fixing mechanism fixes the inner wall panel, the outer wall panel and the middle insulation layer together, and the wall panel bodies are connected by a clamping mechanism to form a flat wall panel. This assembled wall greatly improves the construction efficiency. However, the composite thermal insulation exterior partition board has great limitations as a house wall: the wall panels are connected by a clamping mechanism, and there is no insulation layer between the wall panels. As the house is used for a longer period of time, the gaps between the wall panels will become larger and larger, and the thermal insulation performance as an exterior wall is poor. Therefore, this patent application only uses it as a composite thermal insulation exterior partition board; although the autoclaved aerated concrete board is a lightweight, porous, new type of green and environmentally friendly building material that uses cement, lime, silica sand, etc. as main raw materials and adds different amounts of anti-corrosion treated steel mesh according to structural requirements, it has fire resistance, fire prevention, sound insulation, heat insulation, thermal insulation and other properties, but as an insulation exterior wall, its thermal insulation function is not perfect. Summary of the invention

[0003] In view of the defects in the above-mentioned field, the utility model provides a composite thermal insulation wall, which not only has excellent thermal insulation performance, but also has better fire prevention and sound insulation effects. It can not only be used as an internal partition wall of a building, but also as a load-bearing exterior wall, especially saving time for on-site construction.

[0004] A composite thermal insulation wall comprises an outer wall, an inner wall and an intermediate thermal insulation layer, wherein the outer wall and the inner wall are formed by splicing prefabricated panels, and is characterized in that the prefabricated panels are spliced ​​and fixed to the outer side and the inner side of a heavy steel structure frame to form the outer wall and the inner wall, and the thermal insulation layer is a polyurethane foam layer foamed on site, and the polyurethane foam layer bonds the outer wall and the inner wall into one.

[0005] The outer wall surface and the inner wall surface are formed by splicing autoclaved aerated concrete panels.

[0006] The sides of the autoclaved aerated concrete slab are spliced ​​by using concave and convex groove buckles.

[0007] The composite thermal insulation wall also includes a surface layer on the outside of the outer wall and the inside of the inner wall. The surface layer includes a steel mesh and cement mortar. The steel mesh is attached between the surface layer and the outer wall and between the surface layer and the inner wall and is fixed by cement mortar.

[0008] The heavy steel structure frame includes columns and top cross beams, and the columns and cross beams are I-beams.

[0009] A fixing plate is fixed at the bottom of the column, and the fixing plate is fixed to the anchor plate through bolts pre-buried in the ground beam.

[0010] Two or more rows of horizontal tie rods of different heights are fixed between two adjacent columns below the crossbeam, wherein each row of tie rods has two parallel angle steels, and the two angle steels are fixed at right angles to each other. The outer wall surface is fixed to the outer side of the outer angle steel by screws, and the inner wall surface is fixed to the outer side of the inner angle steel by screws.

[0011] The cross tie rods are provided with upper and lower rows, the upper row is fixed to the bottom of the cross beam, and the lower row is fixed to the ground beam by embedded bolts.

[0012] The size of the I-beam is greater than 250*250 mm.

[0013] The angle steel size is 50*50mm or larger.

[0014] The thickness of the thermal insulation layer is 100 mm.

[0015] The thickness of the outer wall is 120 mm, and the thickness of the inner wall is 100 mm.

[0016] The surface layer thickness is 30 mm.

[0017] The utility model adopts a heavy steel structure as the frame of the wall, splices and fixes the prefabricated panels on the inner and outer sides of the heavy steel structure, and uses polyurethane on-site foaming in the middle to completely fill the middle layer, making it a thermal insulation layer without any joints. The polyurethane thermal insulation layer foamed on-site is similar to an adhesive, which bonds the inner and outer wall surfaces and the heavy steel structure together; at the same time, due to the on-site foaming, polyurethane can also be filled in the small joints of the prefabricated panels, so that the wall has better thermal insulation effect, fire prevention, and sound insulation effect. Since the heavy steel structure is used as the frame of the wall, the composite thermal insulation wall has high strength and good earthquake resistance, and can be used as a load-bearing exterior wall of civil buildings.

[0018] The prefabricated board of the utility model is an autoclaved aerated concrete board, which is a lightweight porous new green environmental protection building material with anti-corrosion treated steel mesh, and the autoclaved aerated concrete boards are spliced ​​by concave-convex groove buckles to make the splicing seams smaller.

[0019] A surface layer can be designed outside the exterior wall and inside the interior wall. It can be paved as a whole with wire mesh and then fixed and leveled with cement mortar. Users can then stick tiles and other materials on the outside of the surface layer, or spray paint as a decorative layer.

[0020] The composite thermal insulation wall of the utility model has the following advantages over the wall of the prior art:

[0021] (1) Reduce a lot of labor, light weight, earthquake resistance, low cost, and have certain economical efficiency.

[0022] (2) The internationally recognized, best insulation material polyurethane is sprayed on-site for foaming, without any joints, with excellent insulation performance, which can save more than 85% of energy.

[0023] (3) The fireproof performance is further improved by using internal and external autoclaved aerated concrete panels to sandwich the polyurethane insulation layer in the middle. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic front cross-sectional view of Example 1 of the utility model.

[0025] Figure 2 A schematic diagram of the connection between the heavy steel structure frame and the ground beam of Example 1 of the utility model (partial section)

[0026] Figure 3 This is a top view of the lower ground beam structure of Example 1 of the utility model.

[0027] Figure 4 This is a schematic diagram of a partial cross-section of the embodiment 2 of the utility model.

[0028] The numbers in the figure are listed as follows: 1-exterior wall, 2-interior wall, 3-insulation layer, 4-angle steel, 5-column, 6-cross beam, 7-ground beam, 8-anchor plate, 9-bolt, 10-fixing plate, 11-wire mesh, 12-cement mortar. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0030] Example 1

[0031] like Figure 1 , 2 As shown in Figure 3, a composite thermal insulation wall comprises an outer wall 1, an inner wall 2 and an intermediate thermal insulation layer 3, wherein the outer wall 1 and the inner wall 2 are formed by splicing autoclaved aerated concrete panels, and the characteristic is that the autoclaved aerated concrete panels are spliced ​​and fixed to the outer side and the inner side of a heavy steel structure frame to form the outer wall 1 and the inner wall 2, respectively, and the thermal insulation layer 3 is a polyurethane foam layer foamed on site, and the polyurethane foam layer bonds the outer wall 1 and the inner wall 2 into one.

[0032] The heavy steel structure frame includes columns 5 and top beams 6, the columns 5 and beams 6 are I-beams, and two rows of horizontal cross rods are fixed between the columns 5 and at the bottom and top of the columns, wherein each row of cross rods has two parallel angle steels 4, and the two angle steels 4 are fixed at right angles to each other, the outer wall surface 1 is fixed to the outer side of the outer angle steel 4 by screws, and the inner wall surface 2 is fixed to the outer side of the inner angle steel 4 by screws.

[0033] A fixing plate 10 is fixed to the bottom of the column 5 , and the fixing plate 10 is fixed to the anchor plate 8 via a ground angle bolt 9 .

[0034] The angle steel 4 at the bottom is fixed to the cement ground beam 7 by embedded bolts 9 .

[0035] The construction method of the utility model:

[0036] 1. Use strip foundation.

[0037] 2. Cast-in-place reinforced concrete strip beam 7, pre-buried ground angle bolts 9, fixed foundation plate 8, see Figure 3 ,

[0038] 3. Build the main body of the heavy steel structure of the house: the column 5 is made of I-beam, and the top crossbeam 6 is also made of I-beam. The bottom of the column 5 is fixed with a fixed plate 10 and the anchor plate 8 on the ground beam 7 with pre-buried bolts. The crossbeam 6 is fixed on the top of the column. The I-beam is 250*250mm; see Figure 2 ,

[0039] 4. A row of horizontal tie rods are fixed at the top and bottom of the column and between the two columns. The top horizontal tie rod is fixed to the bottom of the beam 6, and the bottom horizontal tie rod is fixed to the ground beam 7 by bolts. Each row of horizontal tie rods has two parallel angle steels 4, which are fixed at right angles to each other. The angle steels are used to fix and splice the autoclaved aerated concrete slabs. If necessary, horizontal tie rods can be set at the middle height of the column. The angle steel size is 50*50mm.

[0040] 5. The autoclaved aerated concrete slab is fixed to the outer side of the outer angle steel 4 by screws to form an outer wall surface 1. The thickness of the outer wall surface 1 is 12 cm.

[0041] 6. Spray polyurethane foaming agent to form an intermediate insulation layer 3.

[0042] 7. After the foaming is complete, level it. The thickness of the insulation layer 3 is 10cm.

[0043] 8. If necessary, add cement mortar and use screws to fix the autoclaved aerated concrete board to the outside of the inner angle steel 4 to form the inner wall surface 2. The thickness of the inner wall surface 2 is 10 cm.

[0044] Example 2

[0045] On the basis of Example 1, a surface layer is added to the outside of the outer wall 1 and the inside of the inner wall 2. The surface layer includes a steel mesh 11 and cement mortar 12. A steel mesh is attached between the surface layer and the outer wall and between the surface layer and the inner wall, and is fixed by cement mortar. Figure 4 shown.

[0046] The construction method 1-8 is shown in Example 1.

[0047] 9. Lay steel mesh 11 on the outside of the outer wall 1 and the inside of the inner wall 2, fix them with staples if necessary, and then apply cement mortar 12 to form a surface layer. The thickness of the surface layer is 3 cm.

[0048] Customers can design a decorative layer outside the surface layer, such as tiling or painting, according to their needs.

[0049] The utility model adopts a heavy steel structure as the frame of the wall, splices and fixes the prefabricated panels on the inner and outer sides of the heavy steel structure, and uses polyurethane on-site foaming in the middle to make it a thermal insulation layer without any joints, so that the wall has better thermal insulation effect, fire prevention and sound insulation effect. Since the heavy steel structure is used as the frame of the wall, the composite thermal insulation wall has high strength and good earthquake resistance, and can be used as a load-bearing exterior wall of civil buildings.

Claims

1. A composite thermal insulation wall, comprising an outer wall surface, an inner wall surface and an intermediate thermal insulation layer, wherein the outer wall surface and the inner wall surface are formed by splicing prefabricated panels, and characterized in that: The prefabricated panels are spliced ​​and fixed to the outside and inside of the heavy steel structure frame to form an outer wall and an inner wall. The thermal insulation layer is a polyurethane foam layer foamed on site, and the polyurethane foam layer bonds the outer wall and the inner wall into one.

2. The composite thermal insulation wall according to claim 1, characterized in that: The outer wall surface and the inner wall surface are formed by splicing autoclaved aerated concrete panels.

3. The composite thermal insulation wall according to claim 2, characterized in that: The sides of the autoclaved aerated concrete slab are spliced ​​by using concave and convex groove buckles.

4. The composite thermal insulation wall according to claim 1, characterized in that: The heavy steel structure frame includes columns and top cross beams, and the columns and cross beams are I-beams.

5. The composite thermal insulation wall according to claim 4, characterized in that: A fixing plate is fixed at the bottom of the column, and the fixing plate is fixed to the anchor plate through bolts pre-buried in the ground beam.

6. The composite thermal insulation wall according to claim 5, characterized in that: Two or more rows of horizontal tie rods of different heights are fixed between the columns below the crossbeam, wherein each row of tie rods has two parallel angle steels, and the two angle steels are fixed at right angles to each other. The outer wall surface is fixed to the outer side of the outer angle steel by screws, and the inner wall surface is fixed to the outer side of the inner angle steel by screws.

7. The composite thermal insulation wall according to claim 6, characterized in that: The cross tie rods are provided with upper and lower rows, the upper row is fixed to the bottom of the cross beam, and the lower row is fixed to the ground beam by embedded bolts.

8. The composite thermal insulation wall according to claim 7, characterized in that: The size of the I-beam is greater than 250*250mm, and the angle steel is greater than 50*50mm.

9. The composite thermal insulation wall according to claim 1, characterized in that: The composite thermal insulation wall also includes a surface layer on the outside of the outer wall and the inside of the inner wall. The surface layer includes a steel mesh and cement mortar. The steel mesh is attached between the surface layer and the outer wall and between the surface layer and the inner wall and is fixed by cement mortar.

10. The composite thermal insulation wall according to claim 9, characterized in that: The thickness of the thermal insulation layer is 100 mm, the thickness of the outer wall is 120 mm, the thickness of the inner wall is 100 mm, and the thickness of the surface layer is 30 mm.

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