Hainan Steel News: H-beam light and heavy steel structure

Hainan Steel News: H-beam light and heavy steel structure
 

Elaborated

H-beam profile:
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H-beam is a cross-sectional area of ​​the distribution is more optimized, stronger weight than a more rational and efficient economic cross-section profile, its cross-section and the letters "H" as the name. Since all parts of H-beam are arranged at right angles, so H-beam in all directions have flexural ability, simple construction, light weight and structural cost advantages, it has been widely used.
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H-shaped steel is used to build a new kind of economy. H-beam cross-sectional shape economically reasonable, good mechanical properties, even when rolling each point representing a cross-section extends a small internal stress, compared with the conventional beam, having section modulus, light weight, saving advantages of metal can construction construction mitigation 30-40%; and its inside and outside leg parallel to the leg end is rectangular, assembled combined into a member, you can save welding, riveting work amounted to 25%. Commonly used to cut the requirements bearing capacity, stability, good cross-section of large construction (such as factories, high-rise construction, etc.), as well as bridges, ships, lifting the transport machinery, equipment foundation, frame, foundation piles.
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Organization description:
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H-beam is to optimize the mechanical properties of the development of a cross-section from the more excellent economic-section steel beam from the word, especially in cross-section with the letters "H" as the name. Its features are as follows:
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◆ flange width, the lateral stiffness.
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◆ bending ability, about 5% -10% over the beam.
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◆ two surfaces parallel to each other so that the connecting flanges, processing means simple.
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◆ Compared with welded I-beam, low-cost, high-precision, low residual stress, without expensive welding materials and weld inspection, saving steel structure manufacturing costs by 30% or so.
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◆ the same cross-section under load. Hot-rolled H steel structure lighter than traditional steel construction 15% -20%.
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◆ Compared with the concrete structure, hot-rolled H steel structure can be increased by 6% of the use of space, and construction reduce weight by 20% to 30% reduction in the structural design of the internal force.
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◆ H-beam processed into a T-shaped steel, castellated beams may be combined to form various cross-sectional forms, great to meet engineering design and manufacturing needs.
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Introduction
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H-beam is divided into hot-rolled H-beam and welded H-beam (H) are two types of hot-rolled H-beam is divided into wide flange H beam (HW) in H-beam flange (HM) and a narrow flange H beam (HN) three.
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HW is H beam height and flange width substantially equal; mainly used for reinforced concrete frame construction, steel core columns in the column, also known as King of the steel column; mainly used in steel structure column
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HM is the H-beam flange width and height of approximately 1.33 ~ 1.75 share, mainly in steel construction: steel frame columns used to accept dynamic load frame beam frame construction with do; for example: device platform
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HN is the H-beam height and flange width share is greater than or equal to 2, is mainly used for beam; H-beam steel use equivalent HN;
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Express way
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H- height; B- width; t1- web thickness; t2- flange thickness; r- represented fillet radius H-beam approach is: the height H × width B × web thickness t1 × wing thickness t2, such as H-beams Q235B: 200 × 200 × 8 × 12 indicates a high 200mm wide and 200mm web thickness 8mm, wing thickness 12mm wide flange H beam, which grades Q235B
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H-beam main material are Q235B, SM490, SS400, Q235B, Q345, Q345B like.
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Application Size:
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H-shaped steel is mainly used for industrial and civil construction beams, columns member.
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Steel structure ◆ industrial structures bearing bracket
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Steel piles and supporting structure ◆ underground engineering
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Industrial equipment configuration ◆ petrochemical and electricity
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◆ Large-span steel bridge member
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◆ ships, machinery manufacturing frame construction
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◆ train, car, tractor beam bracket
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◆ Port conveyors, high speed shutter bracket
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H-shaped steel is an economic cross-section steel, widely used in industrial, construction, bridges, oil drilling platforms, according to forecasts 2005 Chinese H-beam demand of about 2.5 million tons, the demand for five million tons in 2010, but China H-shaped steel annual production capacity of 1.2 million tons, the market demand is very huge.
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Features:
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1, high strength structure
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Compared with the beam, a large section modulus, as in carrying conditions, it can save 10-15% metal.
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2. Design flexible style, rich
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In the same situation the high beam, the steel structure of a large bay bay than 50% of the concrete structure, so that the construction of a more flexible arrangement.
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3. Light weight construction
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And relatively light weight concrete construction, structural weight is reduced, reducing the structural design of the internal forces, can build the foundation structure processing requirements low, construction is simple, the cost is reduced. Hainan Steel
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4. High structural stability
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. In the main hot-rolled H-beam steel structure, the structure of scientific and rational, plasticity and flexibility, high structural stability, adapted to receive a large vibration and shock loads built structure, strong resistance to natural disasters, especially for some of the build more earthquake tectonic belt. According to statistics, more than seven occurred devastating earthquake disaster in the world, mainly to the H-beam steel structure built with minimal victimization.
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5. Add the construction of useful floor area
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Compared with the concrete structure, steel structure column sectional area is small, so you can add the construction of a useful floor area, depending on the construction of a different form, can add useful to use the area of ​​4-6%.
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6. The provincial labor and materials
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Compared with H-beam welding, we can obviously cut corners, cut raw materials, energy and labor consumption, low residual stress, good appearance and surface quality.
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7. facilitate machining
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Ease of configuration and device connection, but also easy to remove and reuse.
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8. Environmental
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H beam can be useful to protect the environment, specifically the table now in three aspects: First, compare and concrete, can be dry-type construction, noise occurred less dust; the second is due to reduce weight, less soil foundation construction on land Resource little damage, in addition to a substantial reduction of the amount of concrete, reducing the amount of stone dug mountains, help maintain the ecological environment; third is to expire after the construction of the life structure, constructed after the removal of solid waste occurring small volume, high value scrap recycling.
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9. The manufacture of high degree of industrialization
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High hot-rolled H-beam steel structure based industrialization level manufacturing, ease of manufacture, intensive production, high precision, easy device, easy to guarantee quality, able to build a real house manufacturing plants, bridges manufacturing plants, manufacturing plants and other industrial plants ʱ?? Development of steel structure, invented and led to hundreds of new industries.
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10. The construction speed
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Small footprint, and is suitable for all-weather construction, subject to weather conditions little effect. Hot rolled H-beam construction speed manufacture of steel structure is about 2-3 times the speed of construction of the concrete structure, capital turnover doubled, lower financial costs, thereby saving investment. In the "first building" China Shanghai Pudong "Jin Mao Tower" for example, the main body structure up to nearly 400m in just less than six months to the end of the cap structure, and steel-concrete construction period is two years. Hainan Steel