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Overall Structure and ComponentsSteel - structure buildings, in contrast to traditional ones, are a novel construction type wholly fabricated from steel. The structure is chiefly composed of steel beams, columns, trusses, and other elements made of section steel and steel plates. Component connections are achieved via welding, bolting, or riveting. Their lightweight and uncomplicated nature leads to wide - spread use in large factories, stadiums, super - high - rise buildings, and more. Common steel - building structure types are portal rigid - frame, frame, truss, and grid structures.Features and Applications of Each TypePortal - frame StructureThe portal - frame structure has a straightforward force - bearing system and a clear force - transmission route, enabling quick construction. It is widely utilized in industrial and civil buildings, including industrial plants, commercial edifices, and cultural and entertainment facilities.Frame StructureFrame structures in steel buildings are flexible and can form a relatively large - scale interior space. They are commonly found in multi - story and high - rise buildings such as commercial offices, shopping malls, and conference centers.Steel - truss StructureThe steel - truss structure uses small - cross - section tubes to form larger - cross - section components. It is frequently employed in industrial and civil buildings with large - span roofs, like bridges, towers, and marine oil - production platforms, especially in structures with large spans or heights.Steel - grid StructureThe steel - grid structure is a high - order statically indeterminate space structure composed of many rods arranged in a specific pattern. It has low spatial stress, a lightweight design, high rigidity, and excellent seismic - resistance capabilities. It can be used in constructing gymnasiums, exhibition halls, petrol stations, and hangars.