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    Selection principle of thickness of floor bearing plate in steel structure engin

    Release time:2019-11-20 17:20:39

    1.

    What is the thickness of floor bearing plate? There is no standard for general floor bearing plate manufacturers. In fact, the selection of the thickness of the floor bearing plate is mainly based on the thickness of the floor and the spacing of the secondary beams. This calculation has technical content. It is calculated according to the section modulus, section inertia moment and other relevant data of the floor bearing plate. Next, Shandong Shengbo small editor will briefly say the judgment basis in general:


    First, the characteristics and design requirements of these two kinds of floor bearing plates are introduced:


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    First, open floor bearing plate. This floor bearing plate is mainly used as a formwork. Its requirement is that it should not rust in the construction stage and collapse deformation should not occur in the construction stage. Generally speaking, our zinc plating is no less than 80g, but due to market competition, some products produced by steel mills are only 40g, or the design institute does not require the zinc plating content in the architectural design. This more common galvanized coil is widely used in various small buildings.


    Second, closed floor bearing plate. As a part of the bearing capacity of the floor, the design institute will have material requirements and galvanized content requirements (Q345B material, 275g) in use. But in fact, some of our customers will reduce the use requirements of materials.




    At the end of the paper, I will summarize that the thickness of the floor bearing plate mainly depends on the thickness of the floor and the spacing of the secondary beams. This calculation has technical content. It is calculated according to the section modulus, section inertia moment and other relevant data of the floor bearing plate. Let's briefly talk about the judgment basis under the general situation




    I. under normal circumstances, the thickness of floor bearing plate between steel beams within 2m can be 0.75-0.8mm;




    2. The thickness of 2-2.5m floor bearing plate can be 0.8-1.0;




    III. 1.5mm is used when the span is 3-4m, and temporary support is used when the span is more than 5m.




    The above is only considered from the perspective of plate thickness, without fully considering the plate type, strength and other factors. Another factor that we can easily ignore is that the quality of the screws also determines the thickness of the floor bearing plate. The better the screws, the stronger the bearing capacity of the floor bearing plate.




    The above is the basis for judging the thickness of the floor bearing plate. I hope it can help you.


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