Self-thermal-insulation wall based on lightweight concrete superposed space grid structure

Abstract

The utility model discloses a self-heat-preservation wall based on a lightweight concrete laminated space grid structure. The wall is composed of a heat-preservation decoration layer, a steel bar grid-lightweight concrete laminated layer, a post-pouring layer and a cement fiber non-dismantling formwork layer. The utility model is suitable for interior and exterior envelope infilled walls of various buildings, has the characteristic of integration of thermal insulation structure and decoration, and has a wider application range compared with a self-thermal insulation block wall body. The utility model has obvious advantages in the aspects of technical feasibility and cost advantage.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal insulation walls, in particular to a self-insulating wall based on a lightweight concrete superimposed space grid structure. Background Art

[0002] As global climate change intensifies, people's demand for energy conservation and emission reduction is getting higher and higher. Traditional buildings have poor thermal insulation performance due to problems with their wall structures, which affects indoor comfort and energy consumption. Therefore, it is particularly important to develop a new wall structure that can effectively improve the thermal insulation performance of buildings.

[0003] In my country, traditional wall materials are mostly bricks, concrete, etc., which have poor thermal insulation performance and cannot meet people's needs for efficient thermal insulation. At the same time, these traditional wall structures require a large amount of bricks, concrete, etc. during construction, resulting in a large weight of the building, which affects the overall economy and applicability of the building. The existing technology mostly uses self-insulating blocks to build thermal insulation walls, but the above method has problems such as poor thermal insulation effect, slow construction speed, and high construction cost. Utility Model Content

[0004] The purpose of the utility model is to overcome the above problems and provide a self-insulating wall based on a lightweight concrete laminated space grid structure. To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A self-insulating wall based on a lightweight concrete laminated space grid structure, which consists of a thermal insulation decorative layer, a steel grid-lightweight concrete laminated layer, a post-casting layer and a cement fiber non-removable formwork layer;

[0006] The steel grid-concrete laminated layer includes a space steel grid and a lightweight concrete laminated layer, the space steel grid is fixedly connected to the thermal insulation decorative layer; the height of the space steel grid is higher than the height of the lightweight concrete laminated layer;

[0007] The cement fiber non-removable formwork layer is fixedly connected to the spatial steel bar grid via an H-type nylon clip; the post-casting layer is arranged between the cement fiber non-removable formwork layer and the lightweight concrete laminated layer.

[0008] As an improvement, the spatial steel bar grid is composed of a plurality of steel bar truss units and horizontal steel bars; the steel bar truss units are vertically arranged to the horizontal steel bars, and the steel bar truss units and the horizontal steel bars are fixed by binding or welding.

[0009] As an improvement, the steel bar truss unit includes a first steel bar truss unit and a second steel bar truss unit, and the first steel bar truss unit and the second steel bar truss unit are arranged alternately;

[0010] The first steel bar truss unit includes an upper chord and two lower chords, the upper chord and the lower chord are arranged in an equilateral triangle, a diagonal web is arranged between the upper chord and the lower chord, the two ends of the diagonal web are respectively connected to the upper chord and the lower chord, and the adjacent diagonal webs are arranged at an angle;

[0011] The second steel truss unit includes two upper chords and one lower chord, the upper chords and the lower chords are arranged in an inverted triangle, a diagonal web is provided between the upper chord and the lower chord, the two ends of the diagonal web are respectively connected to the upper chord and the lower chord, and adjacent diagonal webs are set at an angle.

[0012] As an improvement, the horizontal steel bars include upper horizontal steel bars and lower horizontal steel bars; the upper horizontal steel bars and the lower horizontal steel bars are grouped into a positive horizontal steel bar group and a negative horizontal steel bar group respectively, the positive horizontal steel bar group includes an upper horizontal steel bar and two lower horizontal steel bars, and the negative horizontal steel bars include two upper horizontal steel bars and one lower horizontal steel bar;

[0013] The positive horizontal steel bar group and the negative horizontal steel bar group are arranged alternately.

[0014] The advantages of the utility model are:

[0015] 1. The utility model is suitable for all kinds of building interior and exterior protective filling walls with the characteristics of thermal insulation structure and decoration integration. The application range is wider than that of self-insulating block walls, and meets the needs of thermal insulation and structural integration.

[0016] 2. The spatial steel bar grid used in the utility model is a variant of the spatial grid structure, which is a spatial grid structure that does not consider the calculated length of the rods. Therefore, the out-of-plane deformation of the wall can be calculated under various working conditions of the wall.

[0017] 3. The insulation layer material of the utility model still adopts the traditional insulation material, and the superimposed layer and the post-casting layer also adopt lightweight concrete material. The raw materials are cheap and easy to obtain, which has better cost advantages than the traditional block wall.

[0018] 4. The utility model has quite obvious advantages in terms of technical feasibility and cost advantage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural diagram of a self-insulating wall based on a lightweight concrete laminated spatial grid structure in Example 1.

[0020] Figure 2 This is a structural diagram of a spatial steel grid in a self-insulating wall based on a lightweight concrete laminated spatial grid structure in Example 1.

[0021] Figure 3This is a structural diagram of a steel truss unit in a self-insulating wall based on a lightweight concrete laminated spatial grid structure in Example 1.

[0022] Figure 4 This is a structural diagram of a self-insulating wall insulation decorative layer based on a lightweight concrete laminated spatial grid structure in Example 1.

[0023] Figure 5 This is a structural diagram of placing the manufactured spatial steel bar grid on the thermal insulation decorative layer.

[0024] Figure 6 Schematic diagram of the structure after pouring the lightweight concrete overlay layer.

[0025] Figure 7 This is a schematic diagram of the structure after hoisting.

[0026] Figure 8 This is a schematic diagram of the structure after assembling the cement fiber non-removable formwork layer.

[0027] Fig. 9 Schematic diagram of the structure after filling with the post-cast layer.

[0028] Indicated in the figure:

[0029] 1-thermal insulation decorative layer, 11-thermal insulation material layer, 12-decorative surface layer, 2-steel grid-lightweight concrete composite layer, 21-spatial steel grid, 22-lightweight concrete composite layer, 23-steel truss unit, 231-first steel truss unit, 232-second steel truss unit, 24-horizontal steel bars, 241-upper horizontal steel bars, 242-lower horizontal steel bars, 25-upper chord, 26-lower chord, 27-diagonal web members, 28-positive horizontal steel bar group, 29-inverted horizontal steel bar group, 3-post-cast layer, 4-cement fiber non-removal formwork layer. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0031] In the description of the embodiments of the present utility model, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate an orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, it is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0032] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0033] In the description of the embodiments of the present invention, "multiple" means at least 2.

[0034] In the description of the embodiments of the present utility model, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0035] Example 1

[0036] The present embodiment discloses a self-insulating wall based on a lightweight concrete laminated spatial grid structure, which is composed of a thermal insulation decorative layer 1, a steel grid-lightweight concrete laminated layer 2, a post-casting layer 3 and a cement fiber non-removable formwork layer 4.

[0037] The thermal insulation decorative layer 1 comprises a thermal insulation material layer 11 and a decorative surface layer 12 .

[0038] The steel grid-concrete laminated layer 2 includes a spatial steel grid 21 and a lightweight concrete laminated layer 22. The spatial steel grid 21 is fixedly connected to the thermal insulation decorative layer 1. The height of the spatial steel grid is higher than the height of the lightweight concrete laminated layer.

[0039] The 4 layers of cement fiber non-removal formwork are connected to the spatial steel grid 21 through H-type nylon clips; the post-casting layer 3 is arranged between the cement fiber non-removal formwork layer 4 and the lightweight concrete superposition layer 22.

[0040] The spatial steel bar grid 21 is composed of a plurality of steel bar truss units 23 and horizontal steel bars 24; the steel bar truss units 23 and the horizontal steel bars 24 are vertically arranged, and the steel bar truss units 23 and the horizontal steel bars 24 are fixed by binding or welding.

[0041] The steel bar truss unit 23 includes a first steel bar truss unit 231 and a second steel bar truss unit 232 , and the first steel bar truss unit 231 and the second steel bar truss unit 232 are alternately arranged.

[0042] The first steel truss 231 unit includes an upper chord 25 and two lower chords 26. The upper chord 25 and the lower chord 26 are arranged in an equilateral triangle. A diagonal web member 27 is provided between the upper chord 25 and the lower chord 26. The two ends of the diagonal web member 27 are respectively connected to the upper chord 25 and the lower chord 26. Adjacent diagonal web members 27 are set at an angle.

[0043] The second steel truss unit 232 includes two upper chords 25 and one lower chord 26. The upper chords 25 and the lower chords 26 are arranged in an inverted triangle. A diagonal web member 27 is provided between the upper chords 25 and the lower chords 26. The two ends of the diagonal web member 27 are respectively connected to the upper chord 25 and the lower chord 26. Adjacent diagonal web members 27 are arranged at an angle.

[0044] The horizontal steel bars 24 include an upper horizontal steel bar 241 and a lower horizontal steel bar 242; the upper horizontal steel bars 241 and the lower horizontal steel bars 242 are grouped into a positive horizontal steel bar group 28 and a negative horizontal steel bar group 29 respectively. The positive horizontal steel bar group 28 includes an upper horizontal steel bar 241 and two lower horizontal steel bars 242, and the negative horizontal steel bar 29 includes two upper horizontal steel bars 241 and one lower horizontal steel bar 242.

[0045] The positive horizontal steel bar group 28 and the negative horizontal steel bar group 29 are arranged alternately.

[0046] The utility model also discloses a construction method of a thermal insulation wall, comprising the following steps:

[0047] S1. Make a spatial steel grid

[0048] Connect the steel truss unit and the horizontal steel bars by tying or welding;

[0049] S2. The thermal insulation decorative layer is laid inverted on a vibration table, with the decorative surface layer facing downward and the thermal insulation decorative layer facing upward;

[0050] S3. Place the prepared space steel mesh on the insulation decorative layer, and use a fixing member to fix the space steel mesh to the insulation decorative layer;

[0051] S4. Casting of lightweight concrete overlay layer

[0052] The lightweight concrete prefabricated layer is poured on the thermal insulation decorative layer, and the back-beating process is used to further strengthen the integration of thermal insulation and structure; the thickness of the lightweight concrete pouring is not greater than the height of the steel truss unit;

[0053] The thickness of the lightweight concrete overlay layer should be 60mm, and the strength and stiffness of the lightweight concrete overlay layer after solidification and hardening should be above 5MPa.

[0054] S5. After the lightweight concrete stacking layer solidifies and hardens, the wall is erected and hoisted

[0055] Before hoisting, ensure that the wall has a certain degree of flatness and rigidity, and during hoisting, ensure that the sides of the thermal insulation decorative layer are horizontal or vertical; after hoisting, it is reliably connected to the adjacent frame columns, structural columns or shear walls through horizontal steel bars;

[0056] S6. Install cement fiber board without dismantling the formwork layer

[0057] Each side of the cement fiber non-removal formwork is fixedly connected to the uncast side of the spatial steel grid through H-shaped nylon clips, and the rough side of the cement fiber non-removal formwork faces the steel grid-lightweight concrete superimposed layer side;

[0058] S7. Casting of post-casting layer

[0059] Lightweight concrete with good fluidity is used to fill and pour the reserved space between the cement fiber board non-removal formwork layer and the steel grid-lightweight concrete superimposed layer.

[0060] Since the relevant departments issued the relevant standards for thermal insulation structure integration in 2019, general external protective non-load-bearing walls can only be built with self-insulating blocks. Therefore, the production of self-insulating blocks and special masonry mortar has almost become the main industry of external protective walls in this region. The main reason why self-insulating blocks have become the main industry of external protective walls is that the wall meets the requirements of thermal insulation structure integration from a technical level. Therefore, research and development of another external protective wall that meets the requirements of thermal insulation structure integration is the main way to break the dominant position of the self-insulating block industry.

[0061] The advantages and disadvantages of the self-insulating block wall at this stage are analyzed and studied as follows:

[0062] 1. Self-insulating block walls meet the requirements of thermal insulation structure integration standards;

[0063] 2. The construction method of self-insulating blocks is basically the same as that of traditional aerated blocks, and the construction method is easy to master;

[0064] 3. The price of self-insulating blocks and their masonry mortar is relatively high. The price of self-insulating blocks is about 800 yuan / cubic meter, and the price of special masonry mortar is about 800 yuan / ton. Blocks with a masonry thickness of 350mm should be selected. Therefore, the material cost of self-insulating blocks is more than 280 yuan / ㎡.

[0065] Calculate the raw material cost of this utility model:

[0066] The unit price of the rock wool integrated board-external wall insulation integrated board in the product catalog is 90 yuan per square meter; the horizontal steel bars in the wall are equivalent to the steel bars of the self-insulating block wall. The estimated horizontal steel bars are about 2kg / ㎡ and the cost is 15 yuan / ㎡ based on two 6mm diameter steel bars per 300mm; the estimated steel truss per square meter is 2m, and the estimated increase in truss steel steel consumption is about 1.5kg / ㎡, and the increase in truss steel steel cost is about 15 yuan / ㎡. The lightweight concrete of the superimposed layer and the post-casting layer is calculated based on the 250mm thickness of traditional buildings. Lightweight concrete is 200 yuan / m 3 The wall material cost is about 50 yuan per square meter; the cement fiber board without formwork removal is calculated at 38 yuan / ㎡ based on the thickness of 8mm. The comprehensive calculation of the wall material cost is about 208 yuan / ㎡. Therefore, the utility model has a clear price advantage over the self-insulating block wall.

[0067] The specific embodiments of the present invention are described in detail above, but they are only examples, and the present invention is not equivalent to the specific embodiments described above. For those skilled in the art, any equivalent modification and substitution of the present invention is also within the scope of the present invention. Therefore, the equivalent transformation and modification made without departing from the spirit and scope of the present invention should be included in the scope of the present invention.

Claims

1. A self-insulating wall based on a lightweight concrete laminated space grid structure, characterized in that: It consists of a thermal insulation decorative layer, a steel grid-lightweight concrete laminated layer, a post-casting layer, and a cement fiber non-removable formwork layer; The steel grid-concrete laminated layer includes a space steel grid and a lightweight concrete laminated layer, the space steel grid is fixedly connected to the thermal insulation decorative layer; the height of the space steel grid is higher than the height of the lightweight concrete laminated layer; The cement fiber non-removable formwork layer is fixedly connected to the spatial steel bar grid via an H-type nylon clip; the post-casting layer is arranged between the cement fiber non-removable formwork layer and the lightweight concrete laminated layer.

2. The self-insulating wall based on lightweight concrete superimposed space grid structure according to claim 1 is characterized in that: The spatial steel bar grid is composed of a plurality of steel bar truss units and horizontal steel bars; the steel bar truss units are arranged vertically to the horizontal steel bars, and the steel bar truss units are fixed vertically to the horizontal steel bars by binding or welding.

3. The self-insulating wall based on lightweight concrete superimposed space grid structure according to claim 2 is characterized in that: The steel bar truss unit comprises a first steel bar truss unit and a second steel bar truss unit, wherein the first steel bar truss unit and the second steel bar truss unit are arranged alternately; The first steel bar truss unit includes an upper chord and two lower chords, the upper chord and the lower chord are arranged in an equilateral triangle, a diagonal web is arranged between the upper chord and the lower chord, the two ends of the diagonal web are respectively connected to the upper chord and the lower chord, and the adjacent diagonal webs are arranged at an angle; The second steel truss unit includes two upper chords and one lower chord, the upper chords and the lower chords are arranged in an inverted triangle, a diagonal web is provided between the upper chord and the lower chord, the two ends of the diagonal web are respectively connected to the upper chord and the lower chord, and adjacent diagonal webs are set at an angle.

4. The self-insulating wall based on lightweight concrete superimposed space grid structure according to claim 3 is characterized in that: The horizontal steel bars include upper horizontal steel bars and lower horizontal steel bars; the upper horizontal steel bars and the lower horizontal steel bars are grouped into a positive horizontal steel bar group and a negative horizontal steel bar group respectively, the positive horizontal steel bar group includes an upper horizontal steel bar and two lower horizontal steel bars, and the negative horizontal steel bars include two upper horizontal steel bars and one lower horizontal steel bar; The positive horizontal steel bar group and the negative horizontal steel bar group are arranged alternately.

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