China Steel Structure,Metal Structure Building,Prefab Steel buildings,Steel Workshop,Steel Warehouse,Shed,Hangar

1

The discusstion about the application of light steel structure

The discusstion about the application of light steel structure

Light Steel Structure Building
The story of Light Steel  Building mainly is single story or double stories ,roof and wall usually used light materials ,light load ,the steel structure building which quantity of Steel less than 40 kg per square meter called light steel  building,the development of light steel structure is relatively slow in China, till the 80’s, with the international portal frame light steel structure developing trend and steel itself with the anti-corrosion, fire proof and other coatings continue improved ,the continuous improvement of industrialized production , cost lower then the light steel structure widely used .
Why light steel structure so popular , there are following characteristics
1.1 Economy : the components can be industrial standardization and large-scale production and construction not effected by the weather ,installation quickly ,so save a lots of construction cost .
1.2 Big Span : the span usually more than 20m wide ,so that people can make full use of architectural space.
1.3 Good seismic performance:Light Steel Structure with light roof (roof used single color sheet)combined with the good ductility of steel and has a good seismic performance .
1.4 Flexible : due to the use of modular splicing, so that it can be easily expanded and modified, can be flexible layout of a variety of industrial pipelines. Light steel structure in addition to the above characteristics, its structure can also be diversified, single-span or multi-span portal frame, single span or multi-span roof beams, etc., can also be composed of normal steel or concrete structure and Light steel building combined with the structure, wide application.
2. Design calculation characteristics of the light steel structure ,compared with normal steel structure building light steel structure design and calculation with its own characteristics ,mainly because the structure of light weight, with small impact of earthquakes, less stories , the normal use of extreme state reflects the insensitive
for example the door frame structure ,the main load is vertical load, maintenance load and snow load, horizontal wind load and so on.
In order to give full play to the ductility of steel, in the calculation of steel beams to ignore the local buckling of the web, so that the flange to give full play, and the beam, column members in the form of variable cross-section, make the best use.
Secondly, the strength and stability calculation of the door frame structure is basically same as that of the ordinary steel structure,and the effective cross section is calculated. The calculation of the beam bar is larger and the shear force that calculated from the pure web.
The fly bracing of light steel structure connected with bottom flange plate of roof beam and roof purlin ,when the roof with hanging load the fly bracing couldn’t used single side must double side.
The roof beam of light steel structure ,because big span ,the beam will divided several pieces when design ,
3.Compared the technical indicators of light steel structure and normal steel building ,the light steel building  (Door frame structure , light roof beam structure ) due to its own characteristics, light load, small seismic force, seismic requirements are also relatively loose, the overall structure of the change the deflection control of the bit and part of the single component is lower than that of the normal steel structure.

Light Steel Structure