CN207110155U - Fiber knitted net concrete and hung curtain wall - Google Patents

Abstract

The utility model provides a fiber woven net concrete hanging curtain wall. The fiber woven mesh concrete external curtain wall includes a preset groove, the fiber woven mesh is arranged in the external curtain wall, the preset groove is located at the hole of the fiber woven mesh, and the preset groove is used for installing a back bolt. The cross section of the pre-groove is trapezoidal. The curtain wall described in the utility model has the advantages of simple manufacturing process, thin wall and light weight, low installation and transportation costs, and convenient assembly process in terms of production and installation, and has high bearing capacity, good crack resistance and good durability in terms of performance. , Beautiful appearance and so on.

Description

Fiber woven mesh concrete external curtain wall

technical field

The utility model belongs to the technical field of building materials, in particular to a fiber woven mesh concrete external hanging curtain wall.

Background technique

As a special decorative wall, the curtain wall is widely used in the facade and interior decoration of buildings. Today, there are stone, ceramic panels, glass-ceramic, high-pressure laminates, cement fiber panels, glass, inorganic glass fiber reinforced plastics, There are nearly 60 kinds of curtain wall materials such as clay panels and metal panels, which can meet various needs. Currently the most widely used curtain walls are glass curtain walls, metal curtain walls and stone curtain walls. Lightweight glass curtain walls have disadvantages such as light pollution, high energy consumption, high cleaning and maintenance costs, and being easily struck by lightning. In addition, glass is a fragile material, which requires high management and protection during construction and use. Stone curtain wall has the characteristics of good texture, good appearance, various varieties, and convenient installation. However, the weight of stone increases the weight of the building, and the cost of transportation and construction also increases. Natural stone also contains radioactive substances, which may cause harm to the human body. harm. Metal curtain walls have good ductility and various colors, and can be used for curtain walls of special-shaped buildings, such as curved curtain walls and trough-shaped plates, etc., but their disadvantages are: the metal material is easily corroded, and the connection between the panel and the supporting structure will cause bimetallic contact corrosion; When subjected to wind load, the deformation is large; usually it needs to be used together with other thermal insulation materials to achieve the effect of thermal insulation. The thickness of the curtain wall formed by compounding is relatively large, and the economy is poor. In addition, as an enclosure component, the curtain wall should be developed in the direction of energy conservation and environmental protection, so that the curtain wall has comprehensive properties such as light weight, thin wall, corrosion resistance, and waterproof under the premise of satisfying building enclosure and aesthetics. The above points are the problems and difficulties that are difficult to solve in the process of using the curtain wall structure as the peripheral structure system of the building.

Fiber reinforced concrete (Textile Reinforced Concrete, TRC), as a new cement-based composite material, uses non-metallic fiber materials with high tensile strength and strong corrosion resistance to weave into a network instead of traditional reinforcement materials (such as steel bars), and has excellent Excellent mechanical properties, durability, impact performance and ability to control cracks; and the pouring is simple and convenient, which is convenient for factory prefabrication. In addition, the curtain wall made of this material has good conductive effect and realizes the function of melting snow and ice (it has been disclosed in the patent application No. CN200810229274.2). The crack control effect and deformation ability of the curtain wall are effectively improved by adding chopped fibers to the fine concrete.

Utility model content

The purpose of this utility model is to provide a high-performance building external curtain wall which integrates various advantages such as thin wall, light weight, high bearing capacity, good durability, good impact resistance, high toughness, and easy assembly production. It overcomes the defects of traditional curtain wall materials and improves the service life and economy of curtain walls.

In order to achieve the above purpose, the technical solution disclosed in the utility model is: a fiber woven mesh concrete external curtain wall, a fiber woven mesh is arranged inside the external hanging curtain wall, the preset groove is located at the hole of the fiber woven mesh, and the preset concave Slots for back bolts. The pre-set groove and the external curtain wall are integrated, and the hole is directly formed. Compared with the previous drilling, there is no fine crack, high safety, and the hole size is uniform. It is suitable for mass production and easy to install.

The cross section of the pre-groove is trapezoidal. The traditional curtain wall installation is to drill holes to place hanging bolts. The cross-section of the holes is mostly diamond-shaped, or the inner surface is a concave curved surface, while the shape of the preset groove in the present invention is a trapezoid formed by integral pouring, and the bottom surface is flat so that it is compatible with the hanging bolts. The contact area between them increases, and the installation is more reliable. The external hanging curtain wall can be poured in batches according to the size of the components, or it can be poured into large slabs and then cut into small slab components of corresponding sizes.

On the basis of adopting the above-mentioned technical scheme, the utility model can also adopt the following further technical schemes:

The distance between adjacent fiber woven nets is between 3~10mm, and the thickness of the curtain wall is 1~5cm. The compressive bearing capacity can be as high as 80~100Mpa.

The fiber woven mesh is arranged in the middle of the external curtain wall, and the number of fiber woven mesh layers is one or more layers. The joints between the curtain wall panels can be in the form of caulking or seams.

The manufacture method of fiber braided mesh concrete external curtain wall of the present invention is as follows:

Step 1: Mix one or more chopped fibers with fine concrete before pouring;

Step 2: The fiber braided mesh is stretched before pouring, and impregnated with epoxy resin, or directly stretched and poured; during the pouring process, the fiber braided mesh is fixed layer by layer, and the fine concrete layer is poured; during the pouring process The preset grooves required for later assembly are reserved in the middle, and the reserved preset grooves are located at the holes of the fiber woven mesh to prevent the interface splitting damage of the curtain wall during use;

Step 3: After the pouring of the curtain wall is finished, let it stand first, and then perform maintenance.

The fiber weaving net is made of carbon fiber, aramid fiber, alkali-resistant glass fiber, basalt fiber, polyethylene fiber, polyvinyl alcohol fiber weaving net or a fiber weaving net mixed with the above fibers. The fiber braided net is a non-metallic fiber braided net.

The chopped fibers include: one or more of polyethylene fibers, carbon fibers, glass fibers, basalt fibers, polyvinyl alcohol fibers, aramid fibers and steel fibers.

The composition of fine concrete includes water, water reducing agent, quartz sand and other cementitious materials, and the slump expansion diameter range of fine concrete is between 60 and 75cm.

The length of the chopped fibers is between 5mm and 15mm, and the dosage is between 0.1% and 1.5%.

The mass ratio of each component in the fine concrete is cement: water: fly ash: silica fume: water reducer: coarse sand: fine sand = 1: (0.45~0.55): (0.3~0.36): (0.05~ 0.1): (0.006~0.01): (0.9~1.0): (1.8~2.0), where the particle size ranges of coarse sand and fine sand are 0.6~1.2mm and 0~0.6mm respectively.

The curing refers to transporting the curtain wall panel to the steam curing room after the pouring of the external curtain wall is completed. Before steaming, let it stand for 5-6 hours, and the temperature is controlled at about 30 degrees, so as to ensure that it can resist the temperature stress caused by the temperature rise, so as to avoid local defects. Remove the mold after 2 days of steam curing, and continue to sprinkle water after curing for 28 days to complete the curing process.

Another technical problem to be solved by the utility model is to provide a fiber woven mesh concrete external hanging curtain wall. Including the following technical solutions:

The excellent effect of the utility model is: compared with the traditional curtain wall, the fiber woven mesh concrete hanging curtain wall described in the utility model has light weight, high bearing capacity, strong crack control ability and good durability; the utility model guarantees that the curtain wall structure It integrates the functions of bearing, crack resistance, waterproof and impact resistance, especially in high-rise buildings, the curtain wall can withstand large wind loads. In the cold northern regions, the curtain wall has the function of melting snow and ice and keeping warm.

Due to the good durability of the fiber woven mesh, the thickness of the curtain wall protective layer is not limited. On the premise of meeting the requirements of thin wall and light weight, it also has the ability of impermeability and corrosion resistance, effectively ensuring the service life and economy of the curtain wall. At the same time, since the curtain wall is made of fine concrete mixed with chopped fibers, it has the advantages of crack control ability, energy absorption ability, and micro-crack self-healing ability. The fluidity of the fine concrete used is good, which effectively reduces the production difficulty of curtain wall prefabrication, is conducive to speeding up the progress of prefabrication, realizes the advantages of assembly, and can be flexibly designed according to specific requirements, and the optimal combination plan can be formulated according to the cost situation to achieve benefits and The perfect combination of functions.

Description of drawings:

Fig. 1 is a schematic diagram of the fiber woven mesh concrete external hanging curtain wall of the utility model after installation.

Fig. 2(a) is a schematic diagram of the internal structure of the fiber woven mesh concrete external curtain wall of the present invention.

Fig. 2(b) is a side view of the fiber woven mesh concrete external curtain wall.

Fig. 2(c) is a side view of the special-shaped curtain wall of the fiber woven mesh concrete external curtain wall of the present invention.

3(a)-3(f) are schematic diagrams of the pouring process of the fiber woven mesh concrete external curtain wall of the present invention.

Fig. 4 is a side view of the connecting piece between the fiber braided mesh concrete external curtain wall and the beam of the present invention.

Fig. 5 is a schematic diagram of the connection mode between the fiber woven mesh concrete external curtain wall and the beam, the column and the main structure of the utility model.

Fig. 6 is a side view of the connection mode between the fiber woven mesh concrete external curtain wall and the beam, the column and the main structure of the utility model.

Among them: hanging curtain wall 1, beam 2, column 3, fiber woven mesh 4, fine concrete mixed with chopped fibers 5, preset groove 6, special-shaped hanging curtain wall 7, custom formwork 8, direction of external force during pouring process 9 , bolt 10, hanging plate 11, main structure 12, connector 13.

Detailed ways

Below in conjunction with technical scheme and accompanying drawing, describe and illustrate the example of the utility model in detail, the utility model is described in further detail. It should be understood that the specific examples described here are only used to explain the utility model, not to limit the utility model.

Accompanying drawing 1 has given the fiber braided mesh concrete hanging curtain wall 1 described in the utility model, and the hanging curtain wall 1 is connected with the main structure 12 through the beam 2 and the column 3, as shown in Fig. 5 and Fig. 6 . The manufacturing process of the curtain wall is shown in Figures 3(a) to 3(f). The external curtain wall 1 is constructed by composite pouring of fiber woven mesh 4 and fine concrete 5 mixed with chopped fibers. The non-metallic fiber woven mesh is placed on the external hanging Inside the curtain wall 1, the number of layers of the fiber woven mesh 4 needs to be determined according to actual engineering needs.

The preferred types of non-metallic fiber woven mesh in the fiber woven mesh concrete external curtain wall described in this example include: carbon fiber, aramid fiber (Aramid), alkali-resistant glass fiber, basalt fiber, polyethylene fiber, polyvinyl alcohol fiber weaving net, or a fiber woven net mixed with the above fibers; preferred chopped fibers include: polyethylene fiber, one or more of carbon fiber, glass fiber, basalt fiber, polyvinyl alcohol fiber, aramid fiber and steel fiber species; the preferred composition of fine concrete includes water, water reducer, quartz sand and other cementitious materials.

The mass ratio of each component in the preferred fine concrete is cement: water: fly ash: silica fume: water reducer: coarse sand: fine sand = 1: (0.45~0.55): (0.3~0.36): (0.05~0.1 ):(0.006~0.01):(0.9~1.0):(1.8~2.0), where the particle size ranges of coarse sand and fine sand are 0.6~1.2mm and 0~0.6mm respectively.

The steps of pouring the fiber woven mesh concrete external curtain wall described in this example are shown in Figure 3(a)~3(f). First determine the size of the curtain wall according to the actual engineering needs, and make the mold 8 that meets the layered pouring. As shown in Figure 2(b), in order to make the surface of the curtain wall smoother, a smooth plexiglass mold can be used or a smooth and impermeable film can be fixed on the surface of the existing mold to obtain a smooth external curtain wall. See Figure 2(c), sometimes for pouring a special-shaped external curtain wall, the mold of the required shape can be used to make a special-shaped external curtain wall, and the appearance forms a special curved shape.

When preparing the curtain wall matrix material, first mix all the dry materials according to the corresponding ratio for 60 seconds, then add water and water reducer until the mixing is uniform, and finally add chopped fibers and stir for 60 seconds. The obtained fine concrete 5 mixed with external fibers is poured into the corresponding mold 8, and the thickness of the first layer of the mold 8 is the thickness of the protective layer of the external curtain wall, as shown in Fig. 3(a). Then lay the fiber braided mesh 4 impregnated with epoxy resin, as shown in FIG. 3( b ). The fiber braided net 4 is fixed by the mold 8, and bidirectionally stretched around the fiber braided net, as shown in FIG. 3(c). The fine concrete 5 mixed with chopped fibers is then poured. At this time, the thickness of the second layer of the mold 8 is the layer spacing between the fiber braided net and the fiber braided net, as shown in Fig. 3(d). In the same steps as above, fix the corresponding fiber braided net 4, pour and lay the net sequentially until the number of layers of the fiber braided net required by the design is reached, as shown in Figure 3(e). Finally, by embedding the pre-embedded parts that have been oiled, reserve the back bolt hole 6, as shown in Figure 3(e), the position of the pre-embedded parts should be located at the hole of the fiber woven mesh to avoid damaging the integrity of the fiber woven mesh After the above steps, the pouring of the curtain wall can be completed.

After pouring, the curtain wall panels are transported to the steam curing room. Before steaming, let it stand for 5-6 hours, and the temperature is controlled at about 30 degrees, so as to ensure that it can resist the temperature stress caused by the temperature rise, so as to avoid local defects. Remove the mold after 2 days of steam curing, and continue to sprinkle water after curing for 28 days to complete the curing process. After taking out the external oiled embedded parts, the curtain wall is uniformly transported to the construction site for assembly.

The assembly process of the external curtain wall is shown in Figure 4, Figure 5 and Figure 6. The preset groove 6 on the inside of the fiber-woven reinforced concrete external curtain wall 1 is used as the back bolt hole. After the back bolt is implanted in the preset groove 6, the bolt 8 is used to fix the back bolt and the hanging plate 11, and the hook on the hanging plate 11 is hung. On the beam 2 connected with the column 3, the two are fixedly connected with stainless steel bolts 8, while the column 3 and the main structure 12 are fixedly supported by the connecting piece 13.

The pouring and installation process of the curtain wall described in the utility model is easy for large-scale prefabricated production in factories, convenient for transportation, construction and installation, and has good economic benefits. In addition, it can be flexibly designed according to actual engineering needs, and its appearance is changeable and beautiful. The curtain wall integrates various characteristics such as thin wall, light weight, durability, and high strength, and is suitable for various types of building facades and high-rise buildings in complex environments.

The forming process and maintenance process of the curtain wall are all completed in the factory, and finally the uniform transportation and assembly are carried out to realize industrialized prefabricated production.

The specifications and parameters of the curtain wall should refer to the requirements of "GB/T21086-2007 Building Curtain Wall", and in combination with the building's own conditions, comprehensive design should be carried out in terms of the number of layers of fiber woven mesh, curtain wall thickness, and curtain wall size; it can also be designed according to In specific cases, colored concrete is used to make a beautiful-looking curtain wall, or a curved or special-shaped curtain wall is made according to the direction of the building's facade.

Claims (2)

1. fiber knitted net concrete and hung curtain wall, it is characterised in that including preset-groove, fibre is provided with the plug-in curtain wall Mesh grid is tieed up, the preset-groove is located at fiber knitted net hole, and the preset-groove is used to install back of the body bolt, described preset recessed Groove cross section is trapezoidal；

Spacing between adjacent fiber knitted net is between 3~10mm；Fiber knitted net is laid in the interposition of plug-in curtain wall Put, fibrage scrim layer number is one or more layers.

2. fiber knitted net concrete and hung curtain wall according to claim 1, it is characterised in that：Curtain wall thickness be 1~ 5cm。