The difference between light steel structure and steel structure

The light steel structure housing is a new type of building system, which is favored for its attractive appearance, fast construction speed, and environmental protection. Practice at home and abroad has proved that steel-framed houses play a decisive role in the process of housing industrialization. Through analysis, the development and structural characteristics of China's light steel residential structural system have analyzed the development, advantages, and problems faced by China's development of light steel structure housing. So how much is the price of light steel structure housing ? Where is the difference between light steel structure and steel structure defined? Let's take a look together.

Light steel structure residential construction cost

With regard to the current comprehensive cost of light steel structure housing, it can be analyzed from two aspects. This is the “clean water room” without decoration and the “finished product room” with all decoration and electrical configuration. Because this kind of house building system is different from the traditional practice, many of its pipelines belonging to the refined decoration part are pre-buried in the wall, so the two cannot be divided. In the first case, the current comprehensive cost is about 1,500-1800 yuan per square meter. ^ With the improvement of the industry economy and the further optimization of the building materials used, it is expected that the cost will continue to decrease.

The second situation is even lower than the current fitting-out costs on the market. This kind of house has obviously seen its economic benefits only in terms of an increase of 10% to 15% in the area of ​​use of conventional buildings.

We all know that the cost of steel structure housing is basically the same as the traditional concrete structure, but the use area can be 5% more, and the average carbon emission is about 35% lower, which is an ideal choice for developing a low-carbon economy.

The light steel structure housing refers to a housing that uses a steel structure as a load-bearing structure and uses environmental protection, light weight, and energy-saving materials as the envelope structure. At present, the proportion of steel structure buildings in the entire construction industry in China is less than 5%, while the developed countries have reached more than 50%. The space for the development of residential steel structures in China is very large.

What are the advantages of light steel structure housing compared to traditional housing?

Can reasonably arrange functional intervals

Using the characteristics of high strength of steel, the design can adopt a large bay layout, so that the building plane can be reasonably separated, flexible and convenient, and create open houses. The traditional structure (brick-concrete structure, concrete structure) limits the freedom of space layout due to the nature of materials. If the space is too large, it will result in plate thickness, high beam height, large columns, and “fat plump column” phenomenon, which not only affects the appearance , And increase their own weight, increase the cost, buyers in the second decoration, often due to change the wall position, increase hidden dangers.

High spatial utilization of steel structure housing

In terms of space usage, the section of the steel structure is small, and the effective area of ​​the building can be increased by about 8% compared with the reinforced concrete structure. In the architectural style, the steel structure building is also more flexible and rich. The indoor space can be divided into multiple programs to meet the needs of different users.

Light weight, shock resistance, insulation, waterproof, heat insulation, sound insulation

The same floor area of ​​the building, the steel structure of light weight, according to the comparison, the weight of the six-story light-steel structure, only the equivalent of four-storey masonry structure of the weight. Moreover, the steel has ductility and can better consume energy from the earthquake, so it has good seismic performance and high structural safety. The steel plate itself has the functions of insulation, waterproof, heat insulation and sound insulation.

Economic advantages of steel structure housing

Easy construction and short construction period

Steel structural members can be factory-built and installed on site. Due to the small amount of on-site operations, there is less pollution to the surrounding environment. At the same time, the degree of construction mechanization is high and the construction speed is accelerated. According to statistics, for buildings of the same area, the construction period of the steel structure can be shortened by 1/3 compared with the concrete structure, and the mold material can be saved.

Low overall cost

Due to the light weight, the basic cost is reduced, the total amount of materials is reduced, the direct cost is reduced, the construction period is short, and the indirect costs can be reduced, so the overall construction cost is low.

Meet the requirements of residential industrialization and sustainable development

The steel structure is suitable for large-scale production in the factory and has a high degree of industrialization. It can integrate advanced products such as energy-saving, waterproof, heat-insulating, doors and windows, and integrates design, production, and construction to improve the level of housing industrialization.

In addition, 100% scrap can be recycled after the scrapped steel. Therefore, it is not an exaggeration to say that “steel construction” is a “green building”. It is a new form of construction that adapts to our sustainable human development strategy.

The difference between light steel structure and steel structure

Light steel structure

Lightweight steel structure design regulations (Shanghai Standard) are used to distinguish between light steel and general steel; light steel structure housing is not strictly defined and can generally be distinguished by the cross-sectional composition of the main force components. Therefore, the following structures can be referred to as lightweight steel structures:

(1) Structure made of cold-formed thin-walled steel;

(2) Structure made of hot rolled light steel;

(3) A structure composed of welded and high frequency welded lightweight steels;

(4) Structures made of round tubes, square tubes, rectangular tubes, etc.;

(5) A structure made of members welded by sheet steel;

(6) A structure made of the combination of the above various components.

Judging the structure of heavy steel and light steel structure does not have a unified standard, many experienced designers or project managers often can not fully explain, but we can take some data to consider and determine:

1. Lifting weight of factory truck: 25 tons or more, which can be considered as heavy steel structure.

2, the amount of steel per square meter: greater than or equal to 50KG/M2, can be considered a heavy steel structure.

3, the main component plate thickness: greater than or equal 10MM, light steel structure with less

Steel structure

The steel structure is a structure mainly composed of steel materials and is one of the main types of building structures. The structure is mainly composed of steel beams, steel columns, steel trusses and other components made of steel and steel plates, and each member or component is usually connected by welding seams, bolts or rivets. Because of its light weight and simple construction, it is widely used in large-scale factories, stadiums, super high-level areas.

Steel structure features

1, high strength, light weight

Steel has high strength and high elastic modulus. Compared with concrete and wood, the ratio of density to yield strength is relatively low. Therefore, under the same stress conditions, the structural section of the steel structure is small, the weight is light, and it is easy to transport and install. It is suitable for large span, high height and heavy load. Structure.

2, steel toughness, good plasticity, uniform material, high structural reliability

Suitable for impact and dynamic loads, with good seismic performance. Steel has a uniform internal structure and is nearly isotropic. The actual working performance of steel structures is more in line with the calculation theory. Therefore, the reliability of the steel structure is high.

3, high degree of mechanization of steel structure manufacturing installation

Steel structural components are easily manufactured at the factory and assembled on site. The mechanized manufacturing of steel structural components in the factory has high precision of finished products, high production efficiency, quick assembly speed on site, and short construction period. Steel structure is the most industrialized structure.

4, good sealing performance of steel structure

Because the welded structure can be completely sealed, it can be made into a high-pressure vessel with airtightness, good water-tightness, a large-scale oil pool, and a pressure pipeline.

5, heat-resistant steel structure is not fire-resistant

When the temperature is below 150°C, the properties of the steel material change little. Therefore, the steel structure is suitable for a hot workshop, but when the surface of the structure is exposed to heat radiation of about 150[deg.] C., heat shields are used for protection. When the temperature is between 300°C and 400°C, both the strength and the elastic modulus of the steel significantly decrease. When the temperature is around 600°C, the strength of the steel tends to zero. In buildings with special fire protection requirements, steel structures must be protected with refractory materials to increase the fire rating.

6, poor corrosion resistance of steel structure

Especially in wet and corrosive media environment, it is easy to rust. General steel structures should be rust-removed, galvanized, or painted and should be regularly maintained. For offshore platform structures in seawater, special measures such as "zinc block anode protection" are required to prevent corrosion.

7, low carbon, energy saving, green, reusable

Dismantling of steel structures will hardly generate construction waste, and steel can be recycled.

Editor's summary: The above is about the cost of light steel structure housing and the difference between light steel structure and steel structure. It is for reference only and hopes to help everyone. If you want to know more related information, you can pay attention to this website information.

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