What are the difficulties in the construction of steel interlayer
The steel structure mezzanine layer is used as the interlayer of the factory building or some large-space buildings. It can be used as a platform or a temporary office area. As long as the construction is properly arranged and the two are operated at the same time, the construction of the steel structure interlayer is not Affect the internal production. Today, what are the difficulties in the construction of steel interlayers?
Do you know that steel structure mezzanine has this advantage?
The rooting of the steel structure sandwich is the key to safety. The rooting of the steel structure sandwich is not easy and requires professional construction personnel to carry out the construction. The so-called rooting is to radiate the load of the steel structure sandwich through the main beam to the root, and then transfer it from the root to the root. In the original structure, the load on the steel structure sandwich is reduced. The hole should be cleaned up during anchoring implantation, otherwise, it will affect the anchoring strength and reduce the weight of the anchoring. For the production of anchor plates, the anchor plate is a pair of anchor bolts. The thickness and area of the anchor plate are calculated according to the total radiation load of the main beam (the value of the anchor plate is larger than that of the high-strength bolt anchor plate, in order to compensate for the low success rate of the value rib The reason) when welding the pallet or connecting plate, it is necessary to cut and weld. The anchor bolts should be pulled out during installation. For small shear forces, soil method experiments should be carried out. When drilling all anchor plates, the reinforcement should be considered. More and less installation can be done, but not less than the design load. If there is a gap between the anchor plate and the concrete beam or concrete column, it can be treated with glue or grout, and the main beam can be loaded after all anchor bolts are solidified.
Secondly, the main beam of the steel structure sandwich is the second key to safety. The load of the main beam and the roof is directly related to the span. The steel structure sandwich is different from other steel construction projects. The length of most beam purlins is variable, so Cut after the actual measurement. If the span is small, use section steel as much as possible, because the box girder must be welded, the cost is high, the weight is heavy, and the lifting and transportation are difficult. The main girder of the steel sandwich has a key role in load-bearing, so attention should be paid to the installation of the main girder of the steel sandwich.
The connection of the steel structure sandwich is generally connected by welding or high-strength bolts. Welding should be carried out in accordance with the construction requirements. It must be fully welded and not missed, and the quality of the weld cannot be insufficient, which will cause the overall frame quality to drop.