In the stage of the development trend of steel structure engineering construction, the general index of steel structure engineering has been gradually improved, such as steel structure workshop, steel structure carport, steel structure building, steel structure addition and service platform. Among them, the steel structure factory building is also favored. But I have to admit, the advantages of the steel structure factory building are over there, and it is of course irresistible for everyone to apply it. Then, what matters must be paid attention to when designing a steel structure factory building?
Potential safety hazards that must be paid attention to in the construction site of steel structure workshop
1. Load: bear the engineering construction load, precipitation, smoke and dust, snow load and maintenance load. The load-bearing characteristics of metal roof panels are related to the section characteristics of plate shape, the thickness of compressive strength of materials, the method of force transmission and the interval of steel purlins.
2. Lighting: The total construction area of steel structure workshops is generally large, so indoor lighting can be improved according to panoramic skylights in broad daylight to save energy. When laying out lighting tiles or light laminated glass in special parts of metal roof, it should be considered that the service life of panoramic skylight is harmonious with metal roof panel, and moisture-proof solution should be done at the joint of panoramic skylight and metal roof panel.
3. Waterproofing: Especially in rainy season in summer, avoid the condensation of water vapor in the bottom layer and the metal roof layer, and discharge the water vapor in the metal roof layer. The solution is to fill thermal insulation cotton in the metal roof layer: a waterproof film is laid under the metal roof bottom plate, and the metal roof plate is provided with connection points that can be naturally ventilated.
4. Lightning protection: There are many storms in summer. When designing the scheme, the steel structure workshop must lead the lightning strike to the road surface to avoid the lightning strike penetrating the metal roof and entering the room.
5. Fire safety: In the whole application process of steel structure workshop, fire accident is a major safety hazard. In case of fire in steel structure workshop, the raw materials of metal roof are not easy to ignite, and the flame is not easy to penetrate through the metal roof panel.
6. Waterproof layer: In addition to doing a good job of leakage prevention, the steel structure workshop must also prevent precipitation from infiltrating into the metal roof panel from the outside. Precipitation is mainly based on the steel lap gap or connection point into the metal roof. In order to achieve the function of waterproof layer, it is necessary to use the built-in type to fix the screw mouth after applying the gasket, and to solve the problem by sealant or electric welding at the steel bar lap joint of the plate, and to use the long plate to remove the steel bar lap joint, so as to solve the problem of bloating and tightness in various connection points.
7. Sound insulation and noise reduction: Most general steel structure workshops are used for production lines. In the whole process of production, manufacturing and construction, noise is inevitable, and the steel structure workshop is to prevent the noise from being transmitted from outdoor to indoor or from indoor to outdoor. The metal roof layer is filled with sound-absorbing materials (generally treated as thermal insulation cotton), and the actual effect of sound insulation and noise reduction is indicated by the sound intensity level difference between the two sides of the metal roof layer. The actual effect of sound insulation and noise reduction is related to the relative density and thickness of sound-absorbing materials. It should be noted that sound-absorbing materials have different isolation effects on sounds with different frequencies.
8. Thermal insulation: Do a good job of precipitation in summer, on the other hand, do a good job of thermal insulation in winter. Block the heat transfer on both sides of the metal roof of the steel structure factory building, so that the average temperature in the room is stable. The thermal insulation function is completed by filling thermal insulation materials (commonly glass fiber wool and rock wool board) under the metal roof panel. The actual effect of thermal insulation is indicated by U value, and the enterprise is W/M2K. Thermal insulation characteristics are determined by the following factors: raw materials, relative density and thickness of thermal insulation cotton; The environmental humidity of thermal insulation cotton, the interface between metal roof panel and the next floor structure (to avoid "thermal bridge" situation); Continuous working ability of metal roof layer to radiant heat.
