Prefabricated steel structure self-insulating building and construction method thereof

Abstract

The present invention discloses an assembled steel structure self-insulating building, comprising a skeleton, the skeleton comprising columns, the bottom ends of the columns being provided with joints, the joints of the upper columns being connected to the top ends of the lower columns, the tops of adjacent columns in each layer of the skeleton being connected by a horizontal beam, the horizontal beam being a C-shaped steel pipe with an upward opening, the bottom wall of the horizontal beam being provided with a pouring inlet and an inlet for water and electricity pipes, the upper and lower opposite pouring inlets being connected by a support rod, the support rod being a C-shaped steel pipe, the side walls of the support rod being provided with a dispensing port. Also disclosed is a construction method for an assembled steel structure self-insulating building, comprising: base construction; erection of the bottom skeleton; laying of interior and exterior wall panels; arrangement of water and electricity pipes; and pouring of concrete. The assembled steel structure self-insulating building and its construction method do not require formwork, formwork support, scaffolding, or secondary surface decoration, thus reducing the number of workers, shortening the construction period, and reducing the transportation and cleaning of materials and facilities, as well as the generation of construction waste.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and in particular to an assembled steel structure self-insulating building and a construction method thereof. Background Art

[0002] Traditional cast-in-place concrete construction methods for beams, slabs, and columns include wooden formwork, plastic formwork, aluminum formwork, and steel formwork. Wooden formwork requires a large number of wooden formwork, wooden planks, or steel pipes for clamping, as well as equipment such as bracing, nails, and wire. This requires a large number of operators, resulting in complex processes, high labor intensity, low efficiency, and a high risk of quality issues such as deformation and holes. The process also requires extensive formwork assembly, transportation, and cleaning, and is prone to safety accidents such as formwork explosions and landslides. This often generates significant amounts of construction waste, with formwork only being used three to five times before being scrapped and generating secondary waste. This leads to long construction times and high overall costs. Plastic formwork support, assembly, and clamping require a large number of plastic formwork, wooden or plastic squares, steel pipe clamps and top braces, nails, tension bolts, wire, and other facilities and equipment. This requires a large number of operators, resulting in complex processes, high labor intensity, low efficiency, and a large amount of mold assembly, transportation, and cleaning work. This often generates a certain amount of construction waste. The formwork has a limited turnover, and scrapping creates secondary waste. This results in a long construction period and high overall costs. Aluminum formwork support, assembly, and clamping require a large number of aluminum formwork, steel pipe clamps and top braces, connectors, and other facilities and equipment. This requires a large number of operators, complex processes, high labor intensity, low efficiency, and a large amount of mold assembly, transportation, and cleaning work. This often generates a certain amount of construction waste. The formwork has a limited turnover, and scrapping creates secondary waste. The formwork is expensive, the construction period is long, and the overall costs are high. Steel formwork support, installation and clamping require a large number of bulky steel formwork, steel pipe clamping and top support, connecting parts and other facilities and equipment, a large number of operators, large-scale installation equipment hoisting, complex process, high labor intensity, low work efficiency, a large amount of formwork matching, transportation and cleaning work, and often generate a certain amount of construction waste. The formwork has a limited turnover and scrapping produces secondary waste. The formwork is expensive, the construction period is long, and the overall cost is high.

[0003] Whether using wooden formwork, plastic formwork, aluminum formwork or steel formwork for concrete pouring construction, it requires a large number of formworks, supports and related fasteners or connectors, a large number of formwork and formwork installation workers, loss of materials and equipment, complex processes, high labor intensity, long construction time, great influence from climate, a large amount of transportation, transfer and cleaning work, and generates a lot of construction waste. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing technology and provide an assembled steel structure self-insulating building and its construction method that does not require formwork and related components, does not require formwork support and installation, does not require scaffolding, does not require secondary surface decoration, does not require secondary waterproofing, greatly reduces the number of workers, greatly shortens the construction period, greatly reduces the transportation, transfer and cleaning of materials and facilities, and reduces the generation of construction waste.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A prefabricated steel structure self-insulating building includes at least two layers of skeletons, the skeleton includes multiple columns arranged vertically and horizontally, the bottom ends of the columns are provided with butt joints, the butt joints of the upper columns are docked at the top ends of the lower columns, and horizontal beams are connected between the tops of adjacent columns in each layer of the skeleton. The horizontal beams are C-shaped steel pipes with an opening facing upward. The bottom wall of the horizontal beams is provided with a pouring inlet for concrete pouring and a water and electricity pipe inlet for inserting water and electricity pipes. A support rod is connected between the upper and lower opposite pouring inlets, and the support rod is a C-shaped steel pipe. The side wall of the support rod is provided with multiple distribution ports.

[0007] As a further improvement of the above technical solution:

[0008] Wall panels are provided on both the inner and outer sides of the columns, so that a wall casting space is formed below each horizontal beam, and the support rod is located in the wall casting space.

[0009] The wall panel is made of steel plate or steel mesh fiber cotton.

[0010] The top of the column is provided with a tenon, and the horizontal beam is clamped in the tenon.

[0011] The horizontal beam is connected to the column by welding, and the support rod is connected to the horizontal beam by welding.

[0012] There are at least two pouring inlets on the horizontal beam, and the pouring inlets are spaced apart along the length direction of the horizontal beam, with the spacing between adjacent pouring inlets being 600 to 1000 mm.

[0013] The column is a rectangular steel pipe.

[0014] A method for constructing a self-insulating assembled steel structure building comprises the following steps:

[0015] S1: base construction;

[0016] S2: Erection of the bottom skeleton: Arrange multiple columns vertically and horizontally on the base layer, weld horizontal beams between the tops of adjacent columns, and make the openings of the horizontal beams face upwards, and weld support rods between the pouring inlet of the bottom wall of the horizontal beam and the base layer;

[0017] S3: Laying of internal and external wall panels: Fix the wall panels on the internal and external sides of each column so that a wall casting space is formed under each horizontal beam and the support rods are located in the wall casting space;

[0018] S4: Water and electricity pipe layout: insert the water and electricity pipes into the wall casting space through the water and electricity pipe inlet on the horizontal beam;

[0019] S5: pouring 400-500kg / m 3 Lightweight aggregate concrete: inject 400-500kg / m into the horizontal beam 3 Light aggregate concrete flows into the support rod through the pouring inlet, and then flows into the wall pouring space through the distribution port, solidifies in the wall pouring space to form a lightweight aggregate concrete wall with thermal insulation effect.

[0020] As a further improvement of the above technical solution:

[0021] The method further includes step S6: laying the floor slab: placing transverse steel pipes on each horizontal beam, welding the floor slabs to the bottom walls of the transverse steel pipes, and then pouring concrete on the floor slabs to form a floor slab concrete layer.

[0022] The process also includes step S7: erecting the upper frame: erecting the upper frame on the lower frame so that the butt joints of the upper frame columns are docked at the top ends of the lower frame columns, and then welding the connections between the upper and lower columns.

[0023] Compared with the prior art, the advantages of the present invention are:

[0024] The prefabricated steel structure self-insulating building of the present invention includes at least two layers of skeletons, and the skeleton includes a plurality of vertically and horizontally arranged columns, and the bottom ends of the columns are provided with docking joints, and the docking joints of the upper columns are docked at the top ends of the lower columns. The tops of adjacent columns in each layer of the skeleton are connected by horizontal beams, and the horizontal beams are C-shaped steel pipes with an upward opening. The bottom wall of the horizontal beams is provided with a pouring inlet for concrete pouring and a water and electricity pipe inlet for inserting water and electricity pipes. A support rod is connected between the upper and lower opposite pouring inlets, and the support rod is a C-shaped steel pipe. The side wall of the support rod is provided with multiple branch pouring inlets and water and electricity pipe inlets for inserting water and electricity pipes. When in use, as long as wall panels are provided on both the inner and outer sides of the columns, a wall pouring space is formed under each horizontal beam, and the support rod is located in the wall pouring space, then 400-500kg / m is injected into the horizontal beam. 3Lightweight aggregate concrete flows through the pouring inlet into the support rods and then through the dispensing port into the wall casting space, where it solidifies to form a lightweight aggregate concrete wall with thermal insulation properties. This prefabricated steel structure self-insulating building requires no formwork or related components, no formwork installation, no scaffolding, no secondary surface finishing, and no secondary waterproofing, significantly reducing the number of workers, the construction period, the transportation, transfer, and cleanup of materials and facilities, and the generation of construction waste.

[0025] The present invention discloses a method for constructing a self-insulating assembled steel structure building, comprising the following steps: S1: construction of a base layer; S2: erection of a base frame: arranging a plurality of columns in a vertical and horizontal arrangement on the base layer, welding horizontal beams between the tops of adjacent columns, with the openings of the horizontal beams facing upward, and welding support rods between the pouring inlets of the bottom walls of the horizontal beams and the base layer; S3: laying of inner and outer wall panels: fixing the wall panels on the inner and outer sides of each column so that a wall pouring space is formed below each horizontal beam, and the support rods are located within the wall pouring space; S4: arrangement of water and electricity pipes: inserting the water and electricity pipes into the wall pouring space through the water and electricity pipe inlets on the horizontal beams; S5: pouring concrete: injecting 400-500 kg / m3 of concrete into the horizontal beams. 3 Lightweight aggregate concrete: Concrete flows into the support rods through the pouring inlet, and then flows into the wall casting space through the dispensing port, where it solidifies to form a lightweight aggregate concrete wall with thermal insulation. By injecting concrete into the horizontal beam, the concrete flows into the support rods through the pouring inlet, and then flows into the wall casting space through the dispensing port, where it solidifies to form a lightweight aggregate concrete wall with thermal insulation. This eliminates the need for formwork and related components, formwork support, scaffolding, secondary surface decoration, or secondary waterproofing, significantly reducing the number of workers, the construction period, the transportation, transfer, and cleanup of materials and facilities, and the generation of construction waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the assembled steel structure self-insulating building of the present invention.

[0027] Figure 2 It is a structural schematic diagram of the columns of the assembled steel structure self-insulating building of the present invention.

[0028] Figure 3 It is a structural schematic diagram of the pouring inlet of the assembled steel structure self-insulating building of the present invention.

[0029] Figure 4 It is a structural schematic diagram of the support rods of the assembled steel structure self-insulating building of the present invention.

[0030] Figure 5It is a structural schematic diagram of the water and electricity pipe inlet of the assembled steel structure self-insulating building of the present invention.

[0031] The numbers in the figure represent:

[0032] 1. Skeleton; 11. Column; 111. Butt joint; 112. Mortise and tenon; 12. Horizontal beam; 121. Casting inlet; 122. Water and electricity pipe inlet; 13. Support beam; 131. Distribution port; 2. Wall panel; 3. Base layer; 4. Floor slab; 5. Horizontal steel pipe. DETAILED DESCRIPTION

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] Figures 1 to 5 An embodiment of the prefabricated steel structure self-insulating building of the present invention is shown. The prefabricated steel structure self-insulating building includes at least two layers of skeletons 1. The skeleton 1 includes multiple columns 11 arranged vertically and horizontally. The bottom ends of the columns 11 are provided with docking joints 111. The docking joints 111 of the upper columns 11 are docked at the top ends of the lower columns 11. Horizontal beams 12 are connected between the tops of adjacent columns 11 in each layer of the skeleton 1. The horizontal beams 12 are C-shaped steel pipes with an upward opening. A pouring inlet 121 for concrete pouring and a water and electricity pipe inlet 122 for inserting water and electricity pipes are provided on the bottom wall of the horizontal beam 12. A support rod 13 is connected between the upper and lower opposite pouring inlets 121. The support rod 13 is a C-shaped steel pipe. A plurality of distribution ports 131 are provided on the side walls of the support rod 13.

[0035] When in use, as long as wall panels 2 are provided on both the inner and outer sides of the column 11, a wall casting space is formed under each horizontal beam 12, and the support beam 13 is located in the wall casting space. Then, 400-500kg / m 3 Lightweight aggregate concrete flows through pouring inlet 121 into support beam 13 and then through dispensing port 131 into the wall casting space, where it solidifies to form a lightweight aggregate concrete wall with thermal insulation properties. This prefabricated steel structure self-insulating building requires no formwork and related components, no formwork installation, no scaffolding, no secondary surface finishing, and no secondary waterproofing, significantly reducing the number of workers, the construction period, the transportation, transfer, and cleanup of materials and facilities, and the generation of virtually no construction waste.

[0036] In this embodiment, the wall panel 2 is made of steel plate or steel mesh fiber wool. The steel mesh fiber wool is fiber wool (5mm thick) glued on a steel mesh (within 1mm).

[0037] In this embodiment, Figure 1As shown, wall panels 2 are provided on both the inner and outer sides of the column 11, so that a wall casting space is formed under each horizontal beam 12, and the support rod 13 is located in the wall casting space. When pouring, 400-500kg / m 3 Lightweight aggregate concrete flows into the support rod 13 through the pouring inlet 121, and then flows into the wall pouring space through the dispensing port 131, and solidifies in the wall pouring space to form a lightweight aggregate concrete wall with thermal insulation effect.

[0038] In this embodiment, Figure 1 and Figure 2 As shown, the top of the column 11 is provided with a tenon 112, and the horizontal beam 12 is clamped in the tenon 112. Specifically, as Figure 1 As shown, the horizontal beams 12 on both sides are clamped in the tenons 112 and welded to the columns 11, thereby facilitating the installation of the horizontal beams 12 and making the fixation of the horizontal beams 12 more stable.

[0039] In this embodiment, the horizontal beam 12 is connected to the column 11 by welding, thereby enhancing the stability of the connection between the horizontal beam 12 and the column 11.

[0040] In this embodiment, the support rod 13 is welded to the horizontal beam 12 to enhance the stability of the connection between the support beam 13 and the horizontal beam 12.

[0041] In this embodiment, Figure 3 As shown, there are at least two pouring inlets 121 on the horizontal beam 12 , and the pouring inlets 121 are spaced apart along the length direction of the horizontal beam 12 , with the spacing between adjacent pouring inlets 121 being 600 to 1000 mm.

[0042] In this embodiment, Figure 2 As shown, the column 11 is a rectangular steel tube.

[0043] A method for constructing a self-insulating assembled steel structure building comprises the following steps:

[0044] S1: Construction of base 3;

[0045] S2: Erection of the bottom skeleton 1: Arrange multiple columns 11 vertically and horizontally on the base layer 3. Weld horizontal beams 12 between the tops of adjacent columns 11, with the openings of the horizontal beams 12 facing upward. Weld support rods 13 between the pouring inlet 121 on the bottom wall of the horizontal beams 12 and the base layer 3.

[0046] S3: Laying the inner and outer wall panels 2: Fix the wall panels 2 on the inner and outer sides of each column 11 so that a wall casting space is formed under each horizontal beam 12, and the support rods 13 are located in the wall casting space;

[0047] S4: Water and electricity pipe arrangement: insert the water and electricity pipe into the wall casting space through the water and electricity pipe inlet 122 on the horizontal beam 12;

[0048] S5: Concrete pouring: inject 400-500kg / m into the horizontal beam 12 3 The lightweight aggregate concrete flows into the support rod 13 through the pouring inlet 121, and then flows into the wall casting space through the dispensing port 131, where it solidifies to form a lightweight aggregate concrete wall with thermal insulation effect. The dispensing port 131 is a round hole or a square hole.

[0049] The method for constructing a self-insulating steel structure is to inject 400-500 kg / m 3 The lightweight aggregate concrete flows into the support rod 13 through the pouring inlet 121, and then flows into the wall pouring space through the dispensing port 131, and solidifies in the wall pouring space to form a lightweight aggregate concrete wall with thermal insulation effect. It does not require formwork and related components, does not require formwork installation, does not require scaffolding, does not require secondary surface decoration, does not require secondary waterproofing treatment, greatly reduces the number of operators, greatly shortens the construction period, greatly reduces the transportation, transfer and cleaning of materials and facilities, and reduces the generation of construction waste.

[0050] This embodiment further includes step S6: laying of floor slab 4: placing transverse steel pipes 5 on each horizontal beam 12, further welding floor slab 4 to the bottom wall of transverse steel pipe 5, and then pouring concrete on floor slab 4 to form a floor slab concrete layer. Floor slab 4 is a steel structure.

[0051] This embodiment also includes step S7: erecting the upper frame 1: erecting the upper frame 1 on the lower frame 1, so that the joints 111 of the upper frame 1 columns 11 are docked at the top of the lower frame 1 columns 11, and then welding the upper and lower column connections. Fixing the wall panels 2 on the inner and outer sides of the columns 11 of the upper frame 1, so that a wall casting space is formed below each horizontal beam 12 of the upper frame 1, and the support rods 13 of the upper frame 1 are located in the wall casting space; inserting the water and electricity pipes into the wall casting space through the water and electricity pipe inlets 122 on the horizontal beams 12 of the upper frame 1; injecting 00-500kg / m 3The lightweight aggregate concrete flows into the support rod 13 through the pouring inlet 121, and then flows into the wall casting space through the dispensing port 131, solidifying in the wall casting space to form a lightweight aggregate concrete wall with thermal insulation function; then, a transverse steel pipe (5) is placed on each horizontal beam 12 of the upper skeleton 1, and a floor slab 4 is further welded to the bottom wall of the transverse steel pipe 5, and then concrete is poured on the floor slab 4 to form a floor slab concrete layer. The upper skeleton 1 is erected on the lower skeleton 1 using the same method. After the erection is completed, the wall and floor slab concrete layers are cast. The floor slab 4 is made of steel blocks or steel mesh fiber wool. The steel mesh fiber wool is fiber wool (thickness within 5mm) glued on a steel mesh (wire diameter within 1mm).

[0052] The specific steps of the construction method of the prefabricated steel structure self-insulating building of the present invention are as follows:

[0053] The first step is to prepare and debug the wire-free straight seam laser welding machine (capable of welding steel pipes or plates with a wall thickness of ≤10mm, with a power of 2-5KW) and the thin plate wire-free roller laser welding machine (capable of welding thin steel plates with a wall thickness of <1mm, with a power of 1-2KW) required for the operation;

[0054] Step 2: Prepare the structural components required for building the house (such as columns 11 with expanded diameters at one end to form a butt joint 111 and a reserved tenon 112 at the other end, and horizontal beams 12 with reserved water pipe inlets 122 for inserting water and electricity pipes and / or pouring inlets 121 for pouring concrete), wall panels 2, support rods 13, floor slabs 4 (wall thickness <1mm), transverse steel pipes 5 (small-sized C-shaped steel pipes reserved to accommodate water and electricity pipes and concrete pouring inlets), and anti-corrosion decorative slurry for the structural surface layer. These structural components are made of Q235B, 20#, Q345, Q390, and other steel pipes, and the panels are made of Q235B galvanized steel sheets or Q345 steel sheets.

[0055] Step 3: Install the above-mentioned columns 11 (rectangular steel pipe support rods in the structural skeleton support) to the corresponding structural parts, and further install the horizontal beam 12 (C-shaped steel pipe with the opening facing upward) to the reserved tenon 112 at the top of the corresponding column 11 (the height of the tenon 112 is ≥50mm), and weld the connection between the column 11 and the horizontal beam 12 firmly using the straight seam laser welding machine in the first step;

[0056] Step 4: Install the support rods 13 (size 3mm*100mm*190mm) described in step 2 between the upper and lower horizontal beams 12 and use the straight seam laser welding machine described in step 1 to weld the connection between the support rods 13 and the upper and lower horizontal beams 12 (size 3-8mm*180-600mm*100-300mm); the adjacent spacing between the support rods 13 is 600-1000mm;

[0057] Step 5: Weld the wall panels 2 and columns 11 described in step 2 so that a wall casting space is formed below each horizontal beam 12, and the support rods 13 are located in the wall casting space;

[0058] Step 6: Install the transverse steel pipe 5 described in the second step between adjacent horizontal beams 12 and weld the connection between the transverse steel pipe 5 and the horizontal beam 12 using the straight seam laser described in the first step; weld the floor slab 4 to the bottom wall of the transverse steel pipe 5, and the adjacent spacing of the transverse steel pipe 5 (size 3-5mm*50-100mm*30-100mm) is ≤600mm; further pre-buried or installed water and electricity pipelines;

[0059] Step 7: The wall panel 2 and one side of the support rod 13 (along the outside of the wall) described in the second step are welded by the thin plate wire-free roller laser welding machine described in the first step. The overlap length of the wall panel 2 and the column 11 and the support rod 13 is not less than 50 mm, and the overlap length of adjacent wall panels 2 is not less than 15 mm; further, the water and electricity pipelines in the wall are pre-buried or installed; and further, the wall panel 2 and the other side of the support rod 13 (along the outside of the wall) described in the second step are welded by the thin plate wire-free roller laser welding machine described in the first step. The overlap length of the wall panel 2 and the column 11 and the support rod 13 is not less than 50 mm, and the overlap length of adjacent wall panels 2 is not less than 15 mm.

[0060] Step 8: Use a slurry sprayer to spray the structural surface anti-corrosion decorative slurry to the bottom of the structural support wall panel 4 formed above (spraying thickness ≥ 1mm), and then transport the concrete to the structure completed in step 6 until the upper surface of the horizontal steel pipe 5 in step 6 is tamped and smoothed;

[0061] Step 9: Convey concrete into the structure formed in step 7 until it is fully poured;

[0062] Step 10: Spray a 1-6mm thick structural surface layer of anti-corrosion decorative slurry on the surface of the structure formed above;

[0063] At this point, the construction process of the prefabricated steel structure self-insulating building is completed.

[0064] The functions of the materials and components of the present invention are as follows:

[0065] 1. One end of the column 11 is expanded to form a butt joint 111, and the other end is reserved for a tenon 112, which serves as the main force and support component in the vertical direction of the building body and the present invention. The column 11 is a rectangular steel tube with a total length of 100mm in the expanded diameter section, which is convenient for connecting the upper and lower structural columns; the other end is reserved for a tenon 112 to facilitate the connection of the horizontal beam 12;

[0066] Second, the horizontal beam 12 reserves a water pipe inlet 122 for inserting water and electricity pipes and / or a pouring inlet 121 for pouring concrete. The horizontal beam 12 is a C-shaped steel pipe with an upward opening, serving as the main force-bearing and support component of the building body and the horizontal direction of the present invention. The pouring inlet 121 is a rectangular hole with a width of 120 mm and a length of 300 mm. Only one of the pouring inlet 121 and the water and electricity pipe inlet 122 can be provided, that is, for pouring and inserting pipes, which facilitates the pre-buried installation of water and electricity pipes on upper and lower floors and the pouring of concrete for walls, etc.

[0067] Third, the support rods 13 are used to share and transmit vertical forces on the building body, as well as to fix and support the wall panels 4 of the present invention. They are reserved to meet the needs of water and electricity pipes and concrete pouring inlets and outlets, serving as horizontal connection channels for embedded parts such as water and electricity pipes of the present invention, and horizontal access channels for wall concrete. The support rods 13 are the same width as the structural beams.

[0068] 4. Anti-corrosion decorative slurry for the structural surface layer and as a decorative waterproof, fireproof, anti-corrosion and thermal insulation layer for the building body and a protective reinforcement layer for the wall panel 4 of the present invention;

[0069] Effects or features of the invention

[0070] 1. No templates, wooden or steel pipe supports, clamps, tension screws, nails, wires, or other connecting tools are required; this also eliminates the need to purchase or rent the aforementioned equipment.

[0071] 2. No need to provide a place or warehouse for stacking formwork, installing formwork, or erecting scaffolding;

[0072] 3. No need to arrange personnel to move, transport or clean the above-mentioned machines, thus eliminating safety accidents and quality defects caused by non-standard formwork and scaffolding or incorrect operation;

[0073] 4. No construction waste is generated as the structure is closed after the operation is completed; no material loss;

[0074] 5. The assembled structural enclosure serves as both the load-bearing structural skeleton of the building and the formwork-bearing skeleton of the traditional formwork. Its overall stiffness, compression resistance, bending resistance, shear resistance and other mechanical properties are 3-10 times that of the traditional model.

[0075] 6. This technology enables simultaneous completion of building and renovation; it is earthquake-resistant to 9 degrees or above, fireproof to Class A, thermally insulated (with an indoor temperature difference of 6-8 degrees Celsius), waterproof (no leakage), soundproof (above 48 decibels), corrosion-resistant (resistant to acid, alkali and other chemical corrosion), weather-resistant (with a building lifespan of up to 200 years), decorative (with adjustable colors and patterns), and structurally integrated; it reduces overall energy consumption by 60-70%; and saves 30-45% in materials.

[0076] 7. Reduce the comprehensive cost of building and decoration by 400-1000 yuan / square meter, shorten the construction period by about 90%, reduce the number of workers by 90% and reduce labor intensity by more than 70%;

[0077] 8. Increase the usable building area by 8-12%;

[0078] 9. The construction site is less affected by the climate and requires less construction equipment.

[0079] Although the present invention has been disclosed above with reference to preferred embodiments, this is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, utilize the technical content disclosed above to make many possible changes and modifications to the technical solution of the present invention, or modify it into an equivalent embodiment with equivalent changes. Therefore, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the scope of protection of the technical solution of the present invention.

Claims

1. A method for constructing a self-insulating assembled steel structure building, characterized by: The assembled steel structure self-insulating building comprises at least two layers of skeletons (1), the skeleton (1) comprises a plurality of columns (11) arranged in a vertical and horizontal manner, the bottom ends of the columns (11) are provided with docking joints (111), the docking joints (111) of the upper columns (11) are docked at the top ends of the lower columns (11), and the tops of adjacent columns (11) in each layer of the skeleton (1) are connected with horizontal beams (12), the horizontal beams (12) are C-shaped steel pipes with an opening facing upward, a pouring inlet (121) for concrete pouring and a water and electricity pipe inlet (122) for water and electricity pipe insertion are provided on the bottom wall of the horizontal beam (12), a support rod (13) is connected between the upper and lower opposite pouring inlets (121), the support rod (13) is a C-shaped steel pipe, and the support rod (13) is connected with the top of the adjacent columns (11). A plurality of dispensing ports (131) are provided on the side wall; wall panels (2) are provided on both the inner and outer sides of the upright column (11), so that a wall casting space is formed below each horizontal beam (12), and the support rod (13) is located in the wall casting space; water and electricity pipes are inserted into the wall casting space through the water and electricity pipe inlet (122) on the horizontal beam (12); lightweight aggregate concrete flows into the support rod (13) and the wall casting space through the pouring inlet (121), and solidifies in the wall casting space to form a lightweight aggregate concrete wall with thermal insulation effect; a transverse steel pipe (5) is placed on each horizontal beam (12), the bottom wall of the transverse steel pipe (5) is welded to the floor slab (4), and concrete is poured on the floor slab (4) to form a floor slab concrete layer; the construction method of the assembled steel structure self-insulating building comprises the following steps: S1: base (3) construction; S2: Setting up the bottom frame (1): arranging a plurality of columns (11) on the base layer (3) in a vertical and horizontal arrangement, welding a horizontal beam (12) between the tops of adjacent columns (11), and making the opening of the horizontal beam (12) face upward, and welding a support rod (13) between the pouring inlet (121) on the bottom wall of the horizontal beam (12) and the base layer (3); S3: Laying of inner and outer wall panels (2): Fixing the wall panels (2) on the inner and outer sides of each column (11) so that a wall casting space is formed below each horizontal beam (12), and the support rods (13) are located in the wall casting space; S4: Water and electricity pipe arrangement: insert the water and electricity pipe into the wall casting space through the water and electricity pipe inlet (122) on the horizontal beam (12); S5: pouring 400-500kg / m 3 Lightweight aggregate concrete: inject 400-500kg / m into the horizontal beam (12) 3 Light aggregate concrete flows into the support rod (13) through the pouring inlet (121), and then flows into the wall pouring space through the dispensing port (131), solidifies in the wall pouring space to form a light aggregate concrete wall with thermal insulation effect.

2. The construction method of the prefabricated steel structure self-insulating building according to claim 1 is characterized in that: The wall panel (2) is made of steel plate or steel mesh fiber cotton.

3. The construction method of the prefabricated steel structure self-insulating building according to claim 1 is characterized in that: A tenon (112) is provided at the top end of the upright column (11), and the horizontal beam (12) is clamped in the tenon (112).

4. The method for constructing a prefabricated steel structure self-insulating building according to claim 1, characterized in that: The horizontal beam (12) is connected to the column (11) by welding, and the support rod (13) is connected to the horizontal beam (12) by welding.

5. The construction method of the prefabricated steel structure self-insulating building according to claim 1 is characterized in that: There are at least two pouring inlets (121) on the horizontal beam (12), and the pouring inlets (121) are spaced apart along the length direction of the horizontal beam (12), with the spacing between adjacent pouring inlets (121) being 600 to 1000 mm.

6. The method for constructing a prefabricated steel structure self-insulating building according to claim 1, characterized in that: The column (11) is a rectangular steel tube.

7. The construction method of prefabricated steel structure self-insulating building according to claim 1, characterized in that: The method further includes step S6: laying the floor slab (4): placing transverse steel pipes (5) on each horizontal beam (12), welding the floor slab (4) to the bottom wall of the transverse steel pipe (5), and then pouring concrete on the floor slab (4) to form a floor slab concrete layer.

8. The construction method of prefabricated steel structure self-insulating building according to claim 7, characterized in that: The method further includes step S7: erecting the upper frame (1): erecting the upper frame (1) on the lower frame (1) so that the butt joint (111) of the column (11) of the upper frame (1) is butted against the top of the column (11) of the lower frame (1), and then welding the connection between the upper and lower columns.

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