1. Light steel structures are mainly used in load-bearing buildings that do not bear large loads. Use light H-section steel (welded or rolled; variable section or equal section) to make portal steel frame support, C-type and Z-type cold-formed thin-walled steel for purlins and wall beams, profiled steel plates or light sandwich panels for Low-rise and multi-layer prefabricated steel structure housing systems are assembled with high-strength bolts, ordinary bolts, self-tapping screws and other connectors and sealing materials for roof and wall enclosures.
2. Advantages
(1) Earthquake resistance: Most of the roofs of low-rise villas are sloping roofs, so the roof structure basically adopts a triangular roof truss system made of cold-formed steel components. A very strong “slab-rib structure system” is formed, which has stronger seismic and horizontal load resistance capabilities, and is suitable for areas with seismic intensity above 8 degrees.
(2) Wind resistance: Lightweight steel structure buildings have light weight, high strength, good overall rigidity and strong deformation ability. The weight of the building is only one-fifth of that of the brick-concrete structure, and it 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 composed of cold-formed thin-walled steel member system, and the steel frame is made of super anti-corrosion high-strength cold-rolled galvanized sheet, which effectively avoids the influence of corrosion of the steel plate during construction and use, and increases the light weight. Service life of steel components. The structural life can be up to 100 years.
(4) Thermal insulation: The thermal insulation material used is mainly glass fiber cotton, which has a good thermal insulation effect. The use of the thermal insulation board for the outer wall can effectively avoid the “cold bridge” phenomenon of the wall and achieve a better thermal insulation effect. The thermal resistance of R15 insulation cotton with a thickness of about 100mm can be equivalent to a brick wall with a thickness of 1m.
(5) Sound insulation: The sound insulation effect is an important indicator for evaluating the residence. The windows installed in the light steel system are all made of insulating glass, which has good sound insulation effect, and the sound insulation is more than 40 decibels; the wall is composed of light steel keel and thermal insulation material gypsum board. , the sound insulation effect can be as high as 60 decibels.
(6) Health: dry construction to reduce environmental pollution caused by waste, 100% of the steel structure materials of the house can be recycled, and most of the other supporting materials can also be recycled, which is in line with the current environmental awareness; all materials are green building materials to meet the ecological requirements Environmental requirements, good for health. ?
(7) Comfort: The light steel wall adopts a high-efficiency energy-saving system, which has a breathing function and can adjust the dry humidity of indoor air; 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. .
Fast: all dry work construction, not affected by environmental seasons. For a building of about 300 square meters, only 5 workers and 30 working days can complete the whole process from foundation to decoration.
(8) Environmental protection: materials can be 100% recycled, truly green and pollution-free.
(9) Energy saving: All the walls are made of high-efficiency energy-saving walls, which have good thermal insulation, heat insulation and sound insulation effects, and can reach 50% of the energy saving standard.