Advantages of assembled steel structure building

 Advantages of Steel Structure

Known for its suitability for high-rise buildings and large-span space structures, steel structure has been widely adopted in landmark buildings and large venues in recent years. Due to the good processability of steel, it is most suitable for specialized mass production and on-site assembly, which can greatly improve the production progress and quality of components, and shorten the on-site construction cycle, and is known as natural assembly structure and natural green building material, which is in line with the needs of sustainable development.

Light weight and high strength

Under the same load and span conditions, the self-weight of steel structure is only 1/3~1/4 of that of concrete structure (cold-formed thin-walled steel structure can even reach 1/10). For high-rise buildings, light deadweight on the one hand means the reduction of foundation cost (statistics of domestic demonstration projects show that the reduction of foundation cost is in the range of 10%~20%); on the other hand, it means that the representative value of gravity load for seismic action is reduced, and the anti-seismic performance is superior.

Component small "light" also means that the geometric size of the component is reduced, which can bring about the release of design space. In particular, the reduction in the area of vertical components will increase the actual usable area of the building, which will indirectly improve the occupancy rate.

Convenient construction

Assembled steel structure buildings can save 40%~50% of the construction period compared with traditional buildings. The industrialization of the production of assembled main structure gets rid of the limitation of climatic conditions, completely solves the problem of the traditional construction method affected by the climate, and realizes the assembly line to build a house. Collaborative design plus integrated technology, standardized components and modular design, BIM technology application plus EPC general contracting management mode, assembly line "smart manufacturing" plus assembly construction, significantly reducing the design, production and construction cycle, bringing operation and maintenance, updating and renovation efficiency.

Good quality of building components (parts) Factory production greatly improves the precision of building components, intelligent manufacturing and information management also greatly improves the quality level of the main structure, the quality and precision of building products completed under the controllable production factors and perfect quality control system is slightly better than that of traditional construction methods.

Flexible layout

The biggest advantage of steel structure with good spatial layout is flexible spatial arrangement, which can be divided at will according to needs. It provides the possibility for diversified and personalized housing needs.

Good structural seismic performance Steel structure itself is light in self-weight, under the effect of earthquakes, and the self-oscillation period of steel structure buildings is relatively long, the coefficient of seismic influence is relatively small, which is more conducive to seismic mitigation from the point of view of seismic design. The good ductility and toughness of steel itself make it have better deformation and energy consumption ability, even under great deformation, it will not collapse, and it can better guarantee the safety of the structure against earthquakes.

Reduced Pollution

Good environmental protection effect Assembly steel structure has less on-site workload and less wet work, which saves water (25.8% compared with PC structure), energy (energy consumption per unit of floor area is reduced by 14.6%) and material (material utilization rate can reach 70%~80%) and also reduces dust pollution and noise pollution at the construction site. Thanks to the characteristics of recyclable steel, the direct recycling and recycling rate of assembled steel structure building is up to more than 90%, and there is less on-site construction waste, which is in line with the "Four Sections and One Environmentally Friendly" green building standards.

As far as the assembled building itself is concerned, according to the current material and labor prices, steel structure still has an absolute advantage over PC structure in terms of cost when compared with the same assembly rate. If the calculation method of GB/T51129-2017 "Evaluation Standard for Assembled Buildings" is implemented, steel structure must be the unquestionable choice in order to realize the goal of assembled buildings accounting for 30% of the new building area.

With the improvement of standardized components, the implementation of modular design, the promotion of modular house type, the matching of functionalized units, and the development of intelligent manufacturing, the marginal cost of assembled steel structure will also diminish.