How steel structure parts connected

How steel structure parts connected?
Steel structure is a structure composed mainly of steel materials and is one of the main types of architectural structures.
The structure is mainly composed of steel beams, steel columns, steel trusses and other components made of shape steel and steel plate. The joints between components or components are usually welded, bolted or rivets. Because of its light weight and easy construction, it is widely used in large factories, stadiums and super high rise areas. The common connecting methods of steel structure are welded joint, bolt connection and riveting.

 
Weld joint: it is a rigid connection (which can withstand bending moment). In addition to the structure directly bearing the dynamic load, the weld joint can be used under the condition of ultra low temperature.
Bolt connection: hinged joint (bending moment is zero) in general conditions can be used, characterized by fast operation, easy dismantling and convenient maintenance.
Riveting: when the force of the structure is less, it is used.

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