Glass Curtain Wall Framing Multi Storey Steel Building For Shopping Mall Of CBD Office

Introduction:
The use of steel structures in tall buildings has the following advantages over the use of concrete structures:
(1) Steel structural material has high strength and light weight
The steel structure has high strength. Compared with the concrete structure, the steel structure beam and the column cross-sectional area are small, which can increase the effective use area. Generally, the cross-sectional area of ​​the high-rise steel structure column accounts for about 3% of the building area, and the cross-sectional area of ​​the high-rise concrete structure accounts for 7%-9% of the building area.
(2) Steel structure construction speed is fast
Most of the steel structure is produced in the factory and transported to the site for integral assembly by welding or bolting. It can be used all day, because the steel structure itself can be used as a load-bearing structure for the construction load to reduce the formwork during construction, thus not only reducing costs, but also greatly speeding up Construction speed. The construction speed of the steel structure is about 1.5 times that of the concrete structure.
(3) Convenient pipeline layout
In the structural space of the steel structure, the truss type member or the member having the cavity can be used, so that the arrangement of the pipeline is convenient, and the replacement and repair of the pipeline is convenient. However, if a concrete structure is used, the beam should not be opened, and the pipe generally passes under the beam, thereby occupying a certain space. In the case of the same floor height, the floor height of the steel structure can be smaller than the floor height of the concrete structure, which can reduce the area of ​​the outer wall.
(4) The steel construction environment is less polluted
When steel structure is constructed, sand, stone, soil, cement and other materials are rarely used, and pollution problems such as dust flying, waste accumulation and noise are avoided from the root wood.
(5) Steel structure construction conforms to sustainable development policy
The steel structure industry is a green-bag environmental protection construction industry. It is relatively reasonable in the use of resources and energy, and has relatively little damage to the environment. It is a breakthrough in solving environmental problems. Steel is a material with a high recycling value and scrap can be recycled. For buildings of the same size, the emission of harmful gases during the construction of the steel structure is only 65% ​​of that of the concrete structure.
1. Materials advantage
1) Steel galvanized layer thickness: general area of the structure of the galvanized layer thickness of two sides is 180g/m2 (American Standard G60, single-side galvanized layer thickness of 13μM), strong corrosion area of not less than 270g/m2 (American Standard G90, single-side galvanized layer thickness of 20μM )
2) Durability: steel structure residential housing can prolong life, structure life up to 100 years
3) Earthquake resistance: application to the seismic intensity of 9 degrees above the region
4) Designing usage steel weight: 25-35kg/m2 (construction area)
5) Floor load: 250kg/square
Specification:

2. Foundation system
Prefabricated villa keel structure with strip foundation, because the building lightweight, force bearing layer requirements is not high, endurance of every square meter 8-13 tons can meet the requirements, the foundation is usually 600 to 800 feet wide, base width is 180-200mm, depth as the geological conditions and the winter of frozen soil layer depends on the thickness, depth to dig to no disturbance of soil, if backfill, follow the endurance requirements for backfilling, based on the depth should be over winter frozen layer thickness
3. Floor system
Floor system of prefabricated villa is composed of cold-formed steel frame, beam, floor OSB structure board, supports, and connecting parts, materials used are oriented strand board, fiber cement board, and plywood, light floors can load 316-365 kg per square meter
4. Wall system
Wall body of light steel structure is mainly composed of wall frame top beam, wall, wall bottom beam, wall support, wall panels and connecting components, prefabricated villa use inner transverse wall as bearing wall, wall column is C shaped light steel, wall thickness depend on the load, usually 0.84-2 mm, it is 400-600 mm between wall column spacing, light steel structure housing the wall structure arrangement, can effectively bear and transfer vertical loads and the arrangement is convenient, but the light steel structure house wall structure cannot bear horizontal loads
5. Flat roof system
Prefabricated villa keel structure of flat roof has two forms, one is no parapet wall but with bar and another is with parapet wall