Unisite Group Ltd.
The steel structure is made up of steel materials, and it is one of the main types of building structure. The structure is mainly composed of steel beam, steel column and steel truss, which are made of steel and steel plate. The joints, bolts or rivets are usually used in the joints, bolts or rivets. Because of its light weight, and the construction is simple, widely used in large factories, venues, super high and other fields.
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The characteristics of the steel is of high strength, light weight, good integral rigidity, deformation ability, it is used in the construction of large span and super high and super heavy buildings especially suitable; homogeneous and isotropic material, an ideal elastic body, the most consistent with the basic assumption of the general engineering mechanics; material has good plasticity and toughness that can have large deformation, can well withstand dynamic loads; short construction period; the high degree of industrialization, can carry out specialized production of high mechanization degree.
Steel structure of high strength steel, greatly improve the yield strength of steel rolling; in addition to the new varieties, such as H steel (also called wide flange steel) and T shaped steel and steel plate to meet the needs of a large span structure and high-rise building.
There are no bridge steel structure, the building itself is not such, clever special connections to solve the problem of building cold bridges by using the technique of the cable truss structure; small and water pipes through the wall, construction decoration is convenient.
1, high material strength, light weight
The strength of steel is higher and the modulus of elasticity is higher. Compared with the concrete and wood density and the ratio of yield strength is relatively low, and therefore under the same loading conditions section of steel structure is small, light weight, convenient transportation and installation, suitable for large span, height, weight bearing structure.
2, steel toughness, good plasticity, material uniformity, high reliability of the structure
Suitable for shock and dynamic load, with good seismic performance. The internal structure of the steel is uniform, which is nearly isotropic. The actual working performance of the steel structure is in line with the calculation theory. So high reliability of steel structure.
3, steel structure manufacturing and installation of high degree of mechanization
The steel structural member is easy to manufacture and assemble at the site. Factory machinery manufacturing steel structural components of high precision, high production efficiency, construction site assembly speed, short construction period. Steel structure is a kind of structure with the highest degree of industrialization.
4, good sealing performance of steel structure
As the welding structure can be completely sealed, can be made into a gas tight, water tightness are good pressure vessels, large oil tanks, pressure pipes, etc..
5, heat resistant steel structure
When the temperature is below 150 degrees Celsius, the properties of steel are very small. So the steel structure is applicable to the heat workshop, but the surface of the structure is protected by the thermal radiation of about 150 degrees centigrade. The strength and elastic modulus of the steel are significantly decreased when the temperature is 300 degrees C -400 C, and the strength of the steel is zero when the temperature is about 600 degrees centigrade. In the building with special fire protection requirements, the steel structure must be protected by the refractory material to improve the fire resistance grade.
6, the corrosion resistance of steel structure
Especially in humid and corrosive medium environment, easy to rust. General steel to rust, galvanized or paint, and regular maintenance. For the offshore platform structure in sea water, it is necessary to adopt special measures such as "zinc anode protection" to prevent corrosion.
7, low carbon, energy saving, green environmental protection, can be reused
Steel structure building demolition almost no construction waste, steel can be recycled.