Interpretation of basic knowledge of steel structure engineering

Interpretation of basic knowledge of steel structure engineering: Light steel buildings are manufactured by factories and spliced ​​and installed on site. They have the characteristics of light weight, short construction period, strong adaptability, beautiful appearance, low cost and easy maintenance. Due to its light weight, it usually accounts for about 30% of the capital construction cost, and the basic construction cost is also greatly reduced. The light steel building system mainly uses color steel plate as the surface enclosure of the roof and wall, and uses thin-walled steel“C”type or“Z”Type as slats and enclosure (substructure), factory welded“H”Cross-section or cold-formed thin-walled steel section beams and columns, on-site bolted or welded spliced ​​portal steel frames are used as a building for the main structure. With the continuous development for decades, a series of supporting components have been produced accordingly, such as waterproof plugs, waterproof tapes, moisturizing cotton and various gutters, door and window nodes, and so on. Therefore, a relatively complete building system, the light steel building system, has been formed. 1. The curved grid is similar to the curved grid, but the spatial structure of the curved grid is more varied and complex. A curved surface composed of arcs or curves in multiple planes forms a richer appearance. 2. Arc-shaped mesh frame The arc-shaped mesh frame can be regarded as a more dynamic space-like form of mesh frame formed by connecting sections of small flat-plate mesh frames along the arc. The arc-shaped mesh frame is mainly used for The space modeling requires buildings with more three-dimensional and dynamic sense, such as gymnasiums, gas stations, roofs of literary buildings, stations and other architectural aspects. 3. There are mainly three types of flat grids: plane truss system, quadrangular pyramid system and triangular pyramid series grid. Among them, the grid structure of quadrangular pyramid system is widely used. The grid frame of quadrangular pyramid system mainly includes the following types: Placing quadrangular pyramids, positive evacuating quadrangular pyramids, obliquely placing quadrangular pyramids, checkerboard-shaped quadrangular pyramids, and star-shaped quadrangular pyramids. The triangular cone grid is mainly divided into triangular cone, evacuated triangular cone and honeycomb triangular cone. 4. Reticulated shell structure When the reticulated shell structure is in the shape of a curved surface and has the structural characteristics of a shell, it is a reticulated shell.