What is the construction process of the attic with steel frame structure?

1. steel and wood structure: the span of the suite is generally within 4000mm.

1, generally the main material adopts 120mm I-beam as the main beam, 120mm channel steel as the ring beam, and 50mm×50mm∠ steel as the auxiliary material; Construction consumables: chemical anchor bolts with diameters of 12mm and 14mm, expansion screws with diameters of 14mm, and covered electrode of J422GB bridge; Steel structure production of I-beam: firstly, determine what plate (large core board, laminated wood, pine board, particleboard, etc.). ) laying in the attic, such as large core board (size: 1220mm×2440mm): when making, first fix the channel steel ring beam, drill the hole with electric hammer, then implant the chemical anchor bolt, after it is fully solidified, install the channel steel, and then connect it according to the special shape of the steel structure. Do a beam measurement, lap I-beam, 360-degree welded joints, with a middle-to-middle spacing of 6 10mm, with the core plate at 2440mm, and the joints are erected on the I-beam. When connecting, the splicing size of ∠ steel is 6 10mm×6 10mm, and the incision is also connected according to the opposite sex. After this structure is installed, no joints can be seen from the ground, and the overall steel frame achieves the function of uniform stress; Of course, the concrete design and construction of concrete plates, no matter what kind of plates are laid, must be overlapped in the steel frame to facilitate the bearing and stress of the steel structure;

2. Production of 100mm channel steel and 100mm× 100mm square pipe; The construction technology is the same as I-beam construction, and the plates must be laid in the square pipe when laying.

3. If the indoor space spans more than 4,000 mm, 140mm, 160mm, 180mm, and I-beams should be adopted, so as to prevent vibration subsidence and deformation after construction. The specific situation should be determined with reference to the building structure;

4. Advantages of this structure: fast construction speed, light weight of the attic and small stress on the wall; Disadvantages: variability, no sound insulation;

Usage: It can be used as storage room, tea room, study room, etc.

Second, the steel-concrete structure: the main materials are I-beam, channel steel, auxiliary angle steel and channel steel; Construction analysis is basically equivalent to the construction process of steel and wood attic. This structure is generally divided into two styles:

1, I-beam is the main girder, and angle steel is the auxiliary Liang Qiang rib connecting the main girder. The division of I-beams is also determined according to the size of profiled steel plates (also called floor tiles with different thicknesses of 0, 8mm, 1, 0mm, 1 and 2mm). When overlapping, I-beams are allowed to bear half or too many steel plates, so that I-beams play a leading role. After the steel frames are overlapped, the profiled steel plates float up, welded with the steel frames, and woven with steel mesh (according to the requirements of concrete structure construction).

Steel bars with diameters of 10mm and 12mm shall be bound with special wire binding for steel bar construction. Finally, light material (ceramsite) cement and sand are poured in and stirred, and the ratio of cement: sand: ceramsite is 1: 2: 3.

2. The other is profiled steel plate. As for the I-beam, it is welded with the auxiliary beam (the auxiliary beam is generally 80mm channel steel; Steel frame with large span and large beam spacing, with 120mm I-beam as auxiliary beam), will be flush with the steel frame after completion, put the steel mesh into the steel frame and steel plate, and finally pour;

The differences between the above two construction schemes of steel-concrete structure are as follows: the former is high enough to be implemented; Because of the height limitation, the latter adopts this scheme; The height difference between them is100 mm; ; This is also a key factor in the construction of this structure.

3. Advantages of this structure: the sound insulation is not easy to deform, and the attic can be used as a bathroom with good waterproof effect; Disadvantages: heavy weight, great stress on the wall;

3. All-steel structure: As the name implies, the construction technology of welded steel plates (diamond plates, flat plates, etc.). ) is similar to the first two in steel structure. Note: this structure is generally used for goods storage in shops and shelves, and is rarely used for indoor home.

1, I-beam is the main girder, and angle steel is the auxiliary Liang Qiang rib connecting the main girder. The division of I-beams is also determined according to the size of profiled steel plates (also called floor tiles with different thicknesses of 0, 8mm, 1, 0mm, 1 and 2mm). When overlapping, I-beams are allowed to bear half or too many steel plates, so that I-beams play a leading role. After the steel frames are overlapped, the profiled steel plates float up, welded with the steel frames, and woven with steel mesh (according to the requirements of concrete structure construction).

Steel bars with diameters of 10mm and 12mm shall be bound with special wire binding for steel bar construction. Finally, light material (ceramsite) cement and sand are poured in and stirred, and the ratio of cement: sand: ceramsite is 1: 2: 3.

2. The other is profiled steel plate. As for the I-beam, it is welded with the auxiliary beam (the auxiliary beam is generally 80mm channel steel; Steel frame with large span and large beam spacing, with 120mm I-beam as auxiliary beam), will be flush with the steel frame after completion, put the steel mesh into the steel frame and steel plate, and finally pour;

The differences between the above two construction schemes of steel-concrete structure are as follows: the former is high enough to be implemented; Because of the height limitation, the latter adopts this scheme; The height difference between them is100 mm; ; This is also a key factor in the construction of this structure.

3. Advantages of this structure: the sound insulation is not easy to deform, and the attic can be used as a bathroom with good waterproof effect; Disadvantages: heavy weight, great stress on the wall;

3. All-steel structure: As the name implies, the construction technology of welded steel plates (diamond plates, flat plates, etc.). ) is similar to the first two in steel structure. Note: this structure is generally used for goods storage in shops and shelves, and is rarely used for indoor home;

List of main and auxiliary materials for attic construction:

1, span less than 3000mm: I-beam 100mm channel steel 100mm angle steel 50mm*50mm*5mm (chemical anchor diameter 16mm).

Span greater than 3000mm:

1) I-beam 120mm channel steel 120mm angle steel 50mm*50mm*5mm (chemical anchor diameter 16mm).

2) I-beam/KOOC-0/40mm channel steel/KOOC-0/40mm angle steel 50mm*50mm*5mm (chemical anchor bolt diameter/KOOC-0/6mm).

3) I-beam/KOOC-0/60mm channel steel/KOOC-0/60mm angle steel 50mm*50mm*5mm (chemical anchor bolt diameter/KOOC-0/6mm).

4) I-beam 180mm embedded steel plate 10mm thick chemical anchor bolt diameter 18mm angle steel 63mm*63mm*6mm,

5) I-beam 200mm embedded steel plate 12mm thick chemical anchor bolt diameter 20mm angle steel 63mm*63mm*6mm,

6) I-beam 250mm embedded steel plate 15mm thick chemical anchor bolt diameter 22mm angle steel 63mm*63mm*6mm,

In addition, there are H-beam production process combinations:

Introduction of specific H-beam:

1, 100mm * 200 MMH- beam angle steel 63mm*63mm*6mm embedded steel plate 10mm 18mm chemical anchor bolt.

2. 125mm*250mmH-beam angle steel 63mm*63mm*6mm embedded steel plate 10mm 18mm chemical anchor.

3. 150mm * 150 MMH- beam angle steel 63mm*63mm*6mm embedded steel plate 10mm 18mm chemical anchor bolt.

For the large span, analyze the materials according to the measured data, check the bearing capacity of the wall, and calculate the standard of steel design.