Brief intorduce of Steel structure engineering
Steel structure engineering is a structure mainly made of steel. It is mainly composed of steel beams, steel columns, steel trusses and other members made of sections and steel plates. Welding seams, bolts or rivets are usually used to connect each member or component, which is one of the main structural types of buildings. Due to its light weight and simple construction, it is widely used in large workshops, stadiums,super high-rise buildings and other fields.
Steel structure features
The dead weight of steel structure is light
The reliability of steel structure is high
The good seismic performance and impact resistance
The steel structure can be assembled accurately and quickly
The industrialization is high of steel structure manufacturing
The interior space is large of steel structure
Easy to make seal structure
The progress of development
Although China make brilliant accomplishment in steel structure in the early age, it remains the level of iron building due to the two thousand years of constraint of feudal system.Until the end of the 19th,China started to adopt to modern steel structure. After the founding of new china,the application of steel structure has developed greatly, both quantity and quality are far more than the past. Not only achieved the great achievement in technical aspect of designing,manufacturing,and installation but also master all kinds of design and construction technique of complicated building. Besides, many large scale and complex structure steel structure workshop,large span steel structure civil building and railway bridge have been built all over the country, such as steel roof truss frame of Great hall of the people in China, the steel frames for stadiums of Beijing and Shanghai, the three-hinged steel arch of the Exhibition Hall of Qin Shihuang's Soldiers and Horses and steel structure project of bird’s of Beijing
Superiority of steel structure building
1.Seismic performance:
The roof of the low-rise villas are mostly sloped roofs, so the roof structure is basically a triangular roof truss system made of cold-formed steel members. The light steel members form a very strong after the structural plate and gypsum board are sealed "Slab rib structure system", this structure system has a stronger ability to resist earthquakes and resist horizontal loads, and is suitable for areas where the seismic intensity is above 8 degrees.
2.Wind resistance:
The steel structure building has light weight, high strength, good overall rigidity and strong anti-deformation ability. The weight of the building is only one-fifth of the brick-concrete structure, which can resist a hurricane of 70 meters per second, so that life and property can be effectively protected.
3.Durability:
The light steel structure residential structure is all made of cold-formed thin-walled steel component system. The steel skeleton is made of super anti-corrosion high-strength cold-rolled galvanized sheet, which effectively avoids the corrosion of the steel plate during construction and use and prolong the life span of the light steel component. The structural life can reach 100 years.
4.Heat preservation:
The thermal insulation material used is mainly glass fiber cotton, which has good thermal insulation effect. The insulation board of the outer wall is used to effectively avoid the phenomenon of "cold bridge" of the wall and achieve a better insulation effect. The thermal resistance value of the R15 insulation cotton with a thickness of about 100mm can be equivalent to a brick wall with a thickness of 1m.
5.Acoustical insulation:
The sound insulation effect is an important indicator to evaluate the residence. The windows installed in the light steel system all use hollow glass, which has good sound insulation effect, and the sound insulation effect is more than 40 dB. The sound insulation effect of the wall composed of light steel keel and insulation material gypsum board can be as high as 60 dB.
6.Health:
Dry construction, reduce the pollution caused by waste to the environment, housing steel structure materials can be 100% recycled, other supporting materials can also be mostly recycled, in line with current environmental awareness; all materials are green building materials, meet the ecological environment requirements, good for health.
7.Comfort:
The light steel wall adopts an efficient energy-saving system,which has a breathing function and can adjust the indoor air dry humidity; the roof has a ventilation function, which can form a flowing air space above the house to ensure the ventilation and heat dissipation requirements inside the roof.
8.Quickness:
All dry work construction is not affected by environmental seasons. In a building of about 300 square meters, only 5 workers and 30 working days can complete the whole process from foundation to decoration
9.Energy saving and Environmental protection:
All adopt high-efficiency energy-saving walls, with good thermal insulation, heat insulation and sound insulation effects, and can reach 50% energy saving standard. The material can be recycled 100%, truly green and pollution-free.