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Steel Structure of Light-weigh buildings with Portal Frame

steel structure of light-weight buildings with portal frame, of which structure is generally supported by the main steel framework and the steel structure bracing system.
The main steel framework include 1) the main force components-portal frame; 2) wall bracket 3) purlin and so on. The bracing system include 1) column bracing; 2) roof bracing; 3) tie bar, brace; 4) knee-bracing; 5) casing pipe, etc.

As can be seen from the above constitution, bracing system account for a large proportion, which is characteristics of light steel structure.

Portal frame buildings generally have loads acting on: vertical loads (structural weight, snow load, fouling load) and horizontal loads (wind loads, crane braking force), as well as seismic load (horizontal and vertical). Because light steel lighter weight, so the response to the earthquake is also lighter, which is very beneficial for the earthquake.