With the rapid development of economy, steel structure has played a pivotal role in the field of architecture, playing an increasingly important role. Whether in industrial or civil buildings, steel structure quickly occupies a wider and wider market with its outstanding characteristics. However, in the design of metal sheet prefabricated industrial shed, according to its characteristics, we can better play the role of steel structure.
Thermal insulation and fire protection of steel
The steel has high thermal conductivity, and its thermal conductivity coefficient is 50w (m.C). When heated to more than 100 ° C, its tensile strength will decrease and its plasticity will increase. When the temperature reaches 250C, the tensile strength of the steel will be slightly increased, but the plasticity will be reduced, resulting in blue brittleness. When the temperature reaches 50O ℃, the steel strength drops to a very low level, which will cause the steel structure to collapse. Therefore, when the ambient temperature of the steel structure reaches above 150 ℃, the thermal insulation and fire protection design must be done.
Roof support system and roof design of prefabricated industrial shed
The layout of the roof support system of the metal sheet prefabricated industrial shed shall be determined according to the plant span, height, column grid layout, roof structure form, crane tonnage, seismic fortification intensity of the area, etc. For factories with roof truss spacing not less than 12m, or factories with super heavy bridge cranes or factories with large vibration equipment, longitudinal horizontal support shall be provided. At present, there are two common methods of steel structure roof:
Rigid roof: double-layer color profiled steel plate with insulation cotton inside.
Composite flexible roof: it is composed of roof color steel plate inner plate, air insulation layer, thermal insulation layer and coiled material waterproof layer.
Setting of temperature expansion joint
The temperature change will cause the deformation of the steel structure factory and cause the temperature stress of the structure. When the plane scale of the factory is large, temperature expansion joints shall be set in the vertical and horizontal directions of the factory to avoid large temperature stress. The length of the section can be implemented according to the steel structure specification. The temperature expansion joint is generally treated by setting double columns. For the longitudinal temperature expansion joint, the rolling bearing can be set at the roof truss support.
Elevation Design of Metal Sheet Prefabricated Industrial Shed
The steel structure building mainly has the following four characteristics: scale, line, color and change.
The facade of the prefabricated industrial shed is mainly determined by the process layout. In order to meet the requirements of the process, the facade should be simple and grand, and the nodes should be simple and unified as much as possible. The color profiled steel plate makes the building of steel structure factory light and colorful, which is obviously superior to the heavy and single traditional reinforced concrete structure. Jumping colors and cold colors are often used in the design of steel structure factory, focusing on the main entrances and exits, external gutter, edge closing and flashing, which not only reflects the grand momentum of modern chemical plants, but also enriches the facade effect.
In a word, the design of metal sheet prefabricated industrial shed should be based on its characteristics. The building structure shall be designed according to its characteristics to make the design safe, reliable, economical, reasonable and beautiful.
Send us the inquiry form