Characteristics and advantages of steel structure
Steel structure is made of steel column, steel column, steel pipe truss and other components made of channel steel and thick steel plate; A structure in which each component or component is connected by welding, anchor bolts or rivets.
Steel structure characteristics
1.stainless steel sheet ductility, good plastic deformation, symmetrical material, high structural credibility, suitable for bearing impact driving force load, with excellent seismic grade performance.
2. high compressive strength of raw materials, light weight itself, high bolt strength, high elastic mold. Compared with concrete and wood, its relative density and tensile strength ratio is relatively low, so under the same bearing standard steel structure members small cross-section, light weight, help transport and installation, suitable for large span, high height to width ratio, heavy bearing structure.
3.the sealing performance of the steel structure is good, because the electric welding structure can ensure thorough sealing, can be made of sealing, tightness are very good pressure vessels, large and medium-sized oil pools, two types of pressure vessels, etc.
4. the steel structure is not fire resistant, when the temperature is below 150℃, the characteristics of stainless steel sheet change little. Therefore, the steel structure is suitable for thermal production workshops, but when the surface of the structure is subjected to thermal radiation above and below 150 ° C, thermal insulation materials should be used for maintenance. The temperature is 300℃ -400℃. Bolt strength and elastic mold are significantly reduced, the temperature at 600 ° C left, the compressive strength of stainless steel sheet tends to zero. In the construction with unique fire safety requirements, the steel structure must be maintained with fire-resistant insulation materials in various aspects to enhance the fire protection level.
5. steel structure manufacturing installation machinery automation level is high, steel structure components help in the processing plant manufacturing, construction site assembly. Processing plant mechanical automation production of steel structure components manufactured products with high precision, high productivity, construction site assembly faster, tight construction period. The steel structure is a kind of structure with the largest modern level.
The main characteristics of steel structure
Wind resistance
The steel structure engineering has the advantages of light weight, high compressive strength, good overall stiffness and strong deformation ability. The building itself is only one-fifth the weight of the brick-concrete structure and can withstand a storm of 70 meters per second, so that life assets can be properly maintained.
Durability
The flat roof of the low-storey villa is mostly slope roof, so the flat roof structure mostly uses the triangular steel roof truss management system made of cold-drawn steel components. After the light steel structure components are sealed off the structural sheet and the paper gypsum board, a very solid "plate rib structure management system" is generated. This type of structural management system has a stronger seismic grade and the ability to withstand level loads, and is suitable for areas with seismic grades above 9 degrees.
Heat insulation property
The actual effect of sound insulation and noise reduction is a key index value for evaluating housing. The Windows installed in the light steel structure management system are all hollow glass Windows, and the sound insulation and noise reduction effect is very good, and the sound insulation and noise reduction are above 40 decibels. The wall composed of light steel keel partition wall and paper gypsum board, the actual effect of sound insulation and noise reduction can reach 60 dB.
Thermal insulation
The thermal insulation materials used are dominated by glass fiber cotton, which has excellent thermal insulation and insulation effect. The thermal insulation board used for the wall can reasonably prevent the "hot bridge" condition of the wall and achieve better thermal insulation and insulation actual effect. The thermoelectric resistance of R15 insulation material about 100 mm thick can be equivalent to that of a wall 1 m thick.
Service performance
All the light steel structure housing structures are composed of cold-drawn thick wall steel components management system, and the pull anchor is manufactured with very anti-corrosion high-strength cold-rolled galvanized steel plate, which reasonably prevents the damage of rust in the whole process of engineering construction and application, and improves the service life of light steel structure components. The service life of the structure reaches 100 years.
Comfort level
Light steel structure wall with high efficiency environmental protection and energy saving management system, with suction effect, can adjust the indoor air quality dryness; The roof has a natural ventilation function, which can generate a flowing gas compartment in the air inside the house to ensure the natural ventilation and heat removal requirements inside the roof.
Advantages of steel structure
1.steel structure housing than the traditional Chinese building can be stronger consideration of the construction of the middle and deep flexible separation of the provisions, and according to the reduction of the total cross-section of the column and the application of light partition panel, improve the utilization of the total area, indoor reasonable use of the area increased by about 6%.
2. the environmental protection and energy saving effect is very good, the wall uses light environmental protection and energy saving standardized C-type steel, square steel pipe, color steel sandwich board, good thermal insulation performance, good seismic grade. Environmental protection and energy saving 50%.
3. the steel structure management system used in residential buildings can make full use of the good ductility of the steel structure, strong plastic deformation ability, with high-quality seismic grade impact resistance, and further improve the safety and credibility of the housing. Especially in the case of earthquake disasters and strong typhoons, steel structures can prevent the collapse of buildings.
4.the total weight of the construction is light, the steel structure housing management system itself is light, about half of the concrete structure, which can greatly reduce the cost of the basic project. The construction speed is faster, and the construction period is at least one-third less than that of the traditional housing management system.
5. the environmental protection effect is very good. Steel structure housing construction greatly reduces the use of sand, stone, ash, commonly used raw materials are mainly green, 100% acquired or dissolved raw materials, in the demolition of the building, the vast majority of raw materials can be replaced or dissolved, not easy to lead to waste.
6.in line with the provisions of building industrialization and sustainable development concept. Steel structure is suitable for mass production of processing plants, high level of modernization, and can integrate environmental protection, energy saving, moisture proof, heat insulation, window doors and other advanced manufactured products into one, the use of complete sets of equipment, the integration of design, manufacturing, engineering construction, and improve the level of the capital construction industry chain.
