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| The basic components of light steel structure | 1. Main rigid frame: composed of columns and beams;If there is a crane, a crane girder is also included. A, common materials: Q235, Q355; B. Common cross-sectional forms of beams and columns: H-shaped steel, trusses (beams are mostly used), lattice columns; C. Common structural forms: portal rigid frame, frame structure; 2. Support system: including tie rods, horizontal supports, inter-column supports, and corner supports. A. Tie rods are usually used: steel pipes, rectangular pipes;H-beam, channel steel, C-beam, angle iron and so on can also be used; B. The inter-column support is usually used: round steel, steel pipe, angle iron;H-beam, channel steel, I-beam, etc. can also be used; C. Angle braces are usually used: angle iron; 3. Enclosure system: including purlins, purlins rods, roof panels, wall panels, doors, windows, lighting panels, and gas floors. A. Purlin: mainly used, C-shaped steel and Z-shaped steel are cold-formed with hot-drawn steel plate and hot-rolled galvanized steel plate. B. Wall and roof color plates: mainly using high-strength, cold-rolled color steel plates, galvanized or aluminum-zinc color steel plates, stainless steel plates, aluminum alloy plates, and titanium alloy plates.Commonly used in China is galvanized or aluminum-zinc color steel plate. |
| Material classification | 1. According to the composition of the material: ordinary carbon steel (Q235) and ordinary low-alloy steel (Q355, Q390, Q420);Ordinary low-alloy steel is the addition of one or several alloying elements on the basis of ordinary carbon steel. 2. According to the intensity: Q235, Q355, Q390, Q420;Among them, Q235 and Q355 are commonly used materials. |
| Basic data for the design(depand on the project need) | 1. Dead load: must be provided 2. Live load: must be provided 3. Wind load: must be provided 4. Snow load: required in areas with snow 5. Ash load: it needs to be provided in dusty places (such as deserts and cement plants) 6. Crane load: lifting weight, number of cranes. 7. Seismic load: must be provided |
| The component connection method of the steel structure | 1. Welding connection 2. High-strength bolt connection 3. Rivet connection |
| Anti-corrosion method of steel components (commonly used) | 1. Galvanizing: 2. Spray anticorrosive paint: red dan, iron red, epoxy zinc-rich paint; |
| Advantages of steel structure | a) High strength; b) Good reliability; c) Easy to construct. |
| Features of lightweight steel structure |
Lightweight, accurate, convenient and fast molding, convenient for industrial production and transportation, construction and installation are more convenient, short construction period and low cost. |
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