CN105839813B - A kind of assembled heat insulation energy-saving wall board and the practice with steel channel connector - Google Patents

Abstract

An assembled thermal insulation and energy-saving wall panel with channel steel connectors and its method, belonging to the technical field of construction engineering. An assembled thermal insulation and energy-saving wall panel with channel steel connectors includes orthogonal steel wire mesh sheets, EPS thermal insulation modules, recycled concrete , channel steel, mortar, steel pipe recycled concrete columns, connecting bolts. The channel steel securely assembles the concrete wall slab and the steel pipe concrete column with bolts, which can protect the four corners of the concrete slab from being crushed prematurely during the stress process. During the overall stress process of the wall, the channel steel and the wall coordinate with each other and act as a frame, which is beneficial to improve the bearing capacity of the wall. The invention integrates channel steel connection structure technology, assembled shear wall technology and recycled concrete technology, and is suitable for middle and high-rise rural buildings and village buildings.

Description

A prefabricated thermal insulation and energy-saving wall panel with channel steel connectors and its method

technical field

The invention belongs to the technical field of construction engineering, and relates to an assembled heat-preservation and energy-saving wall panel with channel steel connectors and a method thereof.

Background technique

Most of the rural houses in my country are located in the earthquake zone, and the rural buildings are mainly self-built. Due to the lack of knowledge about earthquake resistance, the construction technology cannot meet the basic requirements of earthquake resistance, and the earthquake resistance is weak. At present, there is still a lack of anti-seismic and energy-saving technologies suitable for farm buildings. Traditional farmhouse construction methods are extensive, resources are wasted seriously, construction efficiency is low, quality is poor, building function zoning is not standardized, earthquake resistance is insufficient, and comfort is poor. my country's housing industrialization is playing an increasingly important role in urban housing construction, and the advantages of energy saving, emission reduction, pollution reduction, and rapid assembly are being accepted by the market. However, the development of the industrialization of rural housing is currently very slow, mainly due to the lack of low-cost, easy-to-construct and practical earthquake-resistant prefabricated structural systems for rural housing. For low-rise rural buildings, it is imperative to research and develop the structural system and construction technology of modular prefabricated farm buildings.

Contents of the invention

The purpose of the present invention is to provide a rural building suitable for low multi-storey light steel frame structure, which has the advantages of green environmental protection, high integrity, earthquake resistance and energy saving, and assembly-based construction. An assembled heat preservation and energy saving with channel steel connectors The wallboard and its method can effectively solve the problems of low earthquake resistance, poor thermal insulation effect and slow construction speed of traditional farm houses. In order to achieve the above objectives, the present invention adopts the following technical solutions:

An assembled thermal insulation and energy-saving wall panel with channel steel connectors, the wall panel includes orthogonal steel wire mesh (1), EPS thermal insulation module (2), recycled concrete (3), channel steel (4), mortar (5 ), steel tube recycled concrete columns (6), connecting bolts (7).

The orthogonal steel wire mesh (1) passes through the channel steel (4) and the two are welded together, the orthogonal steel wire mesh (1) is set in the middle of the recycled concrete (3), the orthogonal steel wire mesh (1), the recycled concrete Concrete (3) and channel steel (4) form the force-bearing member of the wall panel; one side of the EPS insulation module (2) and the recycled concrete (3) are integrated into an integrated structure through the concave and convex bite of the dovetail groove, and the EPS insulation module (2) and the recycled concrete Concrete (3) is the insulation layer of the whole wallboard. The mortar (5) and the other side of the EPS thermal insulation module (2) are snapped into an integrated structure. Steel strips are welded on the outer side of the steel tube recycled concrete column (6), and the steel strips connect the force-bearing members of the wall panels together through connecting bolts (7).

The said prefabricated thermal insulation and energy-saving wallboard with channel steel connectors is characterized in that the thickness of the concrete wallboard is 40 mm to 60 mm, and the diameter of the orthogonal steel wire mesh (1) is Φ1 mm to Φ5 mm. The particle size of the coarse aggregate of the recycled concrete (3) is 5 mm to 10 mm.

The middle part of the web of the channel steel (4) is perforated according to the steel bar spacing of the orthogonal steel wire mesh sheet (1) with a diameter of Φ1 mm to Φ5 mm. Insert the steel bar at the end of the orthogonal steel mesh (1) with a diameter of Φ1mm to Φ5mm into the hole of the channel steel (4), and make a 90° hook for the steel bar at the end of the orthogonal steel mesh (1) with a diameter of Φ1mm to Φ5mm. Channel steel (4) spot welding. Pour recycled concrete (3) after positioning is complete.

The EPS thermal insulation module (2) is 70mm-110mm thick and has a dovetail groove on the side, and is connected with recycled concrete (3) and mortar (5) through the occlusal action of the dovetail groove, and has good working performance and reliable stress. Good insulation effect. The prefabricated wall panel and the EPS thermal insulation module (2) are combined to form a shear wall structure with both lateral force resistance and enclosure functions.

The regenerated concrete (3) is made of dismantled waste construction waste, which is screened to select coarse aggregates with a particle size of 5 mm to 10 mm, natural sand as fine aggregates, adding tailings sand, silica fume, fly ash, Plant straws are prepared into green high-performance recycled concrete with a strength of C30-C60 according to the design requirements of concrete strength. The concrete produced can turn industrial, agricultural, and forestry solid waste into resources, which is not only energy-saving and environmentally friendly, but also meets the requirements of the national wall panel innovation and sustainable development of resources.

The channel steel (4) as the connecting piece between the wall panel and the light steel frame column is required to be prepared by cold bending in the factory according to the design size of the wall panel. Similarly, the flange width is determined according to the design requirements. The length of the channel steel is determined by the design size of the wall panel. At the junction of the four corner channel steels of the wallboard, the transverse channel steel is cut off by a flange width and welded to the flange of the longitudinal channel steel at the web position. Form wall panels with channel steel connectors on all four sides.

The mortar (5) is a green high-performance mortar made by adding tailings sand and fly ash to ordinary mortar. Recycling of eco-friendly materials conforms to the concept of "green" put forward by the World Environmental Organization. The application of green ecological wallboard building materials in the construction of farm houses has important social significance for ensuring the sustainable development of resources, improving the living environment of farmers, and enhancing the earthquake resistance of farm houses.

The wall panel connection structure is composed of welded steel strips on the outer side of the steel pipe concrete column, and is connected with the channel steel (4) by bolts. The thickness of the steel strip is 4mm-6mm, and the width is 40mm-80mm. Holes are drilled on the steel strip every 150mm-300mm, and the hole diameter is 8mm-14mm.

Compared with the prior art, an assembled heat-preservation and energy-saving wall panel with channel steel connectors and the connection structure of the present invention are suitable for middle and high-rise farm building structures, and have the following advantages:

(1) The connection method is safe and reliable. The steel mesh is used as a hook through the steel bar at the end and welded with the channel steel, so that the connecting piece and the wallboard are integrated to strengthen the connection of the wallboard. Strong nodes and weak members that effectively reflect the design requirements. Secondly, the channel steel also acts as the formwork of the wall, protecting the integrity of the edge concrete of the wall panel during the stress process.

(2) The construction is convenient and easy to promote industrialization. All the components are prefabricated in the component factory and assembled on site, and finally only need to be plastered with 20mm thick mortar on the outside of the EPS module on site. The process is simple, the construction is convenient, the production efficiency is high, a lot of on-site labor is saved, the cost is saved, and it is beneficial to sustainable development.

(3) The wallboard is light in weight. The thickness of the wall panel structure layer is 40mm-60mm, which is 17%-25% of the thickness of the general farm house (240mm), which reduces the overall weight of the structure and saves materials.

(4) Integration of earthquake resistance and energy saving. The wall panel is made of EPS with a thickness of 70mm to 110mm as the insulation layer, and the insulation effect is better than that of ordinary farm houses, saving energy. The wallboard is light and its own weight is small, and the seismic force on the structure under the action of an earthquake is small, and the anti-seismic effect is obvious.

Description of drawings

Fig. 1 is a cross-sectional view of a prefabricated thermal insulation and energy-saving wall panel with channel steel connectors.

Figure 2 is a connection diagram between the wall panel and the EPS module;

Fig. 3 is a perspective view of a prefabricated thermal insulation and energy-saving wall panel with channel steel connectors.

Fig. 4 is a structural diagram of the connection between an assembled thermal insulation and energy-saving wall panel with channel steel connectors and a light steel frame column.

Fig. 5 is a partial schematic diagram of a connection structure between an assembled thermal insulation and energy-saving wall panel with channel steel connectors and a light steel frame column.

In the figure: 1. Orthogonal steel wire mesh, 2. EPS insulation module, 3. Recycled concrete, 4. Channel steel, 5. Mortar, 6. Steel pipe recycled concrete column, 7. Connecting bolts.

Detailed ways

As shown in Figure 1-5, a method of fabricating thermal insulation and energy-saving wall panels with channel steel connectors is as follows:

The first step is to drill holes along the middle of the channel steel web, with a hole distance of 50mm to 100mm. According to the actual engineering situation, it is required that the deviation of the processing size should not be greater than +1mm, so that the steel mesh and the channel steel can be connected accurately. According to the design requirements of the concrete slab, holes are drilled at the symmetrical positions in the middle of the two flanges of the channel steel. This hole is reserved for the bolted connection between the wall panel and the column.

In the second step, pass the steel bars at the end of each side of the steel mesh sheet through a channel steel to protrude 10mm to 20mm, and make a 90° hook, and spot weld the straight section of the protruding channel steel with the outer side of the channel steel web. The channel steel and the steel mesh are effectively connected into a whole, the force on the wallboard is more reliable, and the connection is safer and more convenient.

The third step is to set the formwork required for pouring components according to the design size of the concrete slab. The formwork has pre-embedded PVC pipes according to the design requirements, and reserved bolt holes for wallboard connections. Place the 70mm ~ 110mm EPS module with dovetail grooves on the bottom layer as the lower formwork, and place the channel steel and steel mesh on it.

The fourth step is to configure new green high-performance recycled concrete with tailings sand, fly ash, silica fume, fiber, etc. according to the design requirements of the wall panel. The green ecological wall board building material is applied to the construction of farm houses. Pour recycled concrete into the mold, vibrate and compact the concrete in the mold with vibrating tools on the pouring platform, and standardize for 28 days.

The fifth step is to weld the steel strip connector on the light steel frame column according to the design requirements, and punch holes in the steel strip according to the design, and the position of the hole corresponds to the reserved hole position on the channel steel flange. Connect the cured wall panel with EPS to the light steel frame through bolts. The outside of the EPS is plastered with mortar.

Claims (8)

1. An assembled thermal insulation and energy-saving wallboard with channel steel connectors, characterized in that: the wallboard includes orthogonal steel wire mesh (1), EPS thermal insulation module (2), recycled concrete (3), channel steel ( 4), mortar (5), steel pipe recycled concrete column (6), connecting bolt (7); The orthogonal steel wire mesh (1) passes through the channel steel (4) and the two are welded together, the orthogonal steel wire mesh (1) is set in the middle of the recycled concrete (3), the orthogonal steel wire mesh (1), the recycled concrete Concrete (3) and channel steel (4) form the force-bearing member of the wall panel; one side of the EPS insulation module (2) and the recycled concrete (3) are integrated into an integrated structure through the concave and convex bite of the dovetail groove, and the EPS insulation module (2) and the recycled concrete The concrete (3) is the insulation layer of the entire wall panel; the mortar (5) and the other side of the EPS insulation module (2) are occluded into an integrated structure; steel strips are welded on the outside of the steel tube recycled concrete column (6), and the steel strips are connected by connecting Bolts (7) connect the stressed members of the wall panels together; The middle part of the web of the channel steel (4) is perforated according to the steel bar spacing of the orthogonal steel wire mesh sheet (1) with a diameter of Φ1 mm to Φ5 mm; the end steel bars of the orthogonal steel wire mesh sheet (1) with a diameter of Φ1 mm to Φ5 mm are inserted into the In the steel (4) hole, the end steel bar of the orthogonal steel wire mesh sheet (1) with a diameter of Φ1 mm to Φ5 mm is used as a 90 ° hook, which is spot welded with the channel steel (4); after the positioning is completed, the recycled concrete (3) is poured. 2. A prefabricated thermal insulation and energy-saving wallboard with channel steel connectors according to claim 1, characterized in that: the thickness of the prefabricated thermal insulation and energy-saving wallboard is 40 mm to 60 mm, and the diameter of the orthogonal steel wire mesh (1) Φ1mm-Φ5mm; the coarse aggregate particle size of recycled concrete (3) is 5mm-10mm. 3. A prefabricated thermal insulation and energy-saving wall panel with channel steel connectors according to claim 1, characterized in that: the EPS thermal insulation module (2) is 70mm-110mm thick and has a dovetail groove on the side, through The occlusion of the dovetail groove is connected with recycled concrete (3) and mortar (5). 4. A prefabricated thermal insulation and energy-saving wallboard with channel steel connectors according to claim 1, characterized in that: said regenerated concrete (3) is made of dismantled waste construction waste, which is sieved to select particles Coarse aggregate with a diameter of 5mm-10mm, natural sand as fine aggregate, adding tailings sand, silica fume, fly ash, and plant straw, and preparing green high-performance recycled concrete with a strength of C30-C60 according to the design requirements of concrete strength. 5. A prefabricated thermal insulation and energy-saving wall panel with channel steel connectors according to claim 1, characterized in that: the channel steel (4) is used as a connector between the wall panel and the steel tube recycled concrete column (6) , it is required to be prepared by cold bending in the factory according to the design size of the wallboard, the thickness of the channel steel is 1mm~4mm, the height of the web plate is the same as the thickness of the structural layer of the wallboard, and the width of the flange is determined according to the design requirements; the length of the channel steel is determined by the design size of the wallboard, At the junction of the four corner channel steels of the wallboard, the transverse channel steel is cut off by a flange width and welded to the flange of the longitudinal channel steel at the web position to form a wallboard with channel steel connectors on four sides. 6. A prefabricated thermal insulation and energy-saving wallboard with channel steel connectors according to claim 1, characterized in that: said mortar (5) is a green mortar made by adding tailings sand and fly ash to ordinary mortar. High performance mortar. 7. A prefabricated thermal insulation and energy-saving wallboard with channel steel connectors according to claim 1, characterized in that: said wallboard connection structure is welded steel strips on the outside of the steel pipe recycled concrete column (6), and the groove The steel (4) is connected by bolts; the steel strips are 4mm-6mm thick and 40mm-80mm wide, and holes are drilled on the steel strips every 150mm-300mm with a hole diameter of 8mm-14mm. 8. A kind of assembly-type thermal insulation and energy-saving wallboard method with channel steel connectors carried out by using the wallboard of claim 1, characterized in that: its manufacturing method is as follows: The first step is to drill holes along the middle of the web of the channel steel, with a hole spacing of 50mm to 100mm; according to the actual engineering situation, the deviation of the processing size is required to be no more than 1mm, so that the steel wire mesh and the channel steel can be connected accurately; according to the concrete slab According to the design requirements, a hole is drilled at the symmetrical position in the middle of the two flanges of the channel steel; this hole is reserved for the bolt connection between the wall panel and the column; In the second step, the steel bars at the ends of each side of the steel mesh sheet pass through a channel steel to protrude 10mm to 20mm, and make a 90° hook, and the straight section protruding from the channel steel is spot-welded with the outer side of the channel steel web; The channel steel and the steel wire mesh are effectively connected as a whole, the force on the wallboard is more reliable, and the connection is safer and more convenient; The third step is to set the formwork required for pouring components according to the design size of the concrete slab; the formwork has pre-embedded PVC pipes according to the design requirements, and reserved bolt holes for wall panels; It is placed on the bottom layer as the lower formwork, and the channel steel and steel wire mesh are placed on it; The fourth step is to configure green high-performance recycled concrete with tailings sand, fly ash, silica fume, and fiber according to the design requirements of the wall panel; apply green ecological wall panel building materials to the construction of farm houses; pour recycled concrete into the mold, On the pouring platform, the concrete in the mold is vibrated and compacted by vibrating tools, and the standard maintenance is 28 days; The fifth step is to weld steel plate strip connectors on the steel pipe recycled concrete column (6) according to the design requirements, and punch holes in the steel strips according to the design, and the positions of the holes correspond to the reserved holes on the channel steel flange; The wall panel with EPS is connected with the light steel frame by bolts; the outside of the EPS is plastered with mortar.