Preface:
Floor bearing plate, also known as pressure plate, steel bearing plate, steel floor bearing plate. The earliest name is called the pressure plate, all the pressing machine formed by the general name of the plate.
The floor bearing plate is formed by cold-bending galvanized steel sheet with its section formed into v-shaped, u-shaped, trapezoid or similar shapes. It is mainly used as permanent formwork, but also can be selected for other purposes.
Floor bearing plate is divided into three categories: open floor bearing plate, closed floor bearing plate and reinforced truss floor bearing plate.
Floor bearing plate products are widely used in all kinds of skyscrapers, thermal power plants, airports, railway stations, sports venues, automobile exhibition halls, theaters, supermarkets, logistics centers, steel plant, office floors wxafd004. It is generally adopted 0.8mm-1.5mm thick galvanized coil, through the machine roller molding, also known as galvanized steel plate or galvanized steel plate. Executive standard: GB/T 12755-2008(old standard: GB/T 12755-91)
How to choose floor bearing plate model?
With the development and progress of science and technology, more and more floor slab models have not been researched and developed, but do you know which of the many floor slab models is most suitable for your steel structure building?
General choice of floor bearing plate model is mainly to see the bearing capacity, inertia moment and section resistance moment, these need professional knowledge. How do we ordinary people choose? First, we choose the height of the slab, which is the number after YX. For example, the floor bearing plate of yx76-344-688, in which the number 76 is the height of the floor bearing plate. The height choice of general floor bearing plate is according to floor cement thickness, choose floor cement thickness normally -50 hind approximate, can serve as floor bearing plate model height. For example, if your floor cement is 100MM, choose 100-50=50MM for the model height of your floor bearing plate, then you can choose the floor bearing plate with a good bearing capacity and a commonly used 50 wave height, such as yx51-305-915, which has a high utilization rate and a good bearing capacity. Of course we prefer this model
How to choose the thickness of floor bearing plate?
The most commonly used thickness of floor bearing plate (pressed steel plate) is 0.8mm, 1.0mm and 1.2mm. The thinnest one can be 0.7mm and the thickest one can be 1.5mm. So when construction, how to choose the thickness of floor bearing plate? That is to say, what is the main determinant of the thickness of the slab?
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The main determinant of the thickness of the slab is the distance between the steel beams under the slab. General steel beam spacing is not more than 3 meters, many steel frame span to achieve 5 to 6 meters or even larger, at this time, the need to add secondary beam, Angle steel, channel steel, C steel or in the floor bearing plate under the support can be added, that is to say, in any case must meet the beam spacing is not more than 3 meters this condition. Like some small buildings, such as private residential areas, steel structure office buildings, etc., the spacing of steel beams is normal only 1 to 2 meters apart, or even less than 1 meter, then use 0.8mm floor plate can be. In a normal steel structure plant, the spacing of steel beams is generally between 2 and 3 meters. The spacing between 2 and 2.5 meters can be used with floor bearing plates of 1.0mm. If the spacing exceeds 2.5 meters, 1.2mm floor bearing plates can be used.
Modern housing construction, the degree of development is not what we can imagine, compared with the past has a lot of excellent performance, and into a lot of innovative factors. Speaking of steel bearing plate, we are not strange, because it has been integrated into our life, it is because of its irreplaceable excellent performance. The following is to introduce its excellent performance.
First of all, it reduces the amount of concrete used, which is very significant in some high-rise areas, or earthquake areas.
Second, in the process of transportation, in the stacking, in the installation, for everyone to reduce the workload.
Third, there are thermal insulation, insulation, sound insulation, on your building floor is a good improvement.
Fourth, it provides us with a good working platform, in the process of construction, can effectively shorten the time limit, help speed up the progress.
The steel bearing plate that we are familiar with, it has above outstanding performance, besides, in improving ceaselessly, believe in that future, steel bearing plate can develop better and better.
In the design of high-rise steel structure of floor bearing plate equipment, steel concrete composite structure is often adopted. In the high-rise with high seismic intensity or very irregular intensity, the core tube with outer frame should not be chosen simply for the sake of economy. It is advisable to select the surrounding giant columns, the core of which is the structural system of the supporting frame. More than half of China's top executives are in the former category. Adverse to earthquake resistance. In light steel industrial workshop, when there is a large suspension load or mobile load, can consider to give up the portal rigid frame and use the network frame. For areas with basic snow pressure, the roof curve should be favorable for snow slide and for areas with heavy rainfall. When the building allows, it is more economical to place supports in the frame than simply connecting the joints to the frame.
The shape of the floor bearing plate is simple, the wave degree is big, the strength is high, when the installation laid down the welded steel mesh and the concrete field watering combination, the adhesion is good, in the high-rise building can not only omit the steel formwork, but also can reduce the floor bearing capacity.
1. In the use stage, the overall stability of the steel beam and the local stability of the upper flange are improved;
2. When the steel support plate on the floor is installed, it can be used as a construction platform. At the same time, as there is no need to use temporary support, it does not affect the work of the next floor construction plane;
3. Water, electricity and pipelines can be placed on the ribs of the steel support plate on the floor, so as to integrate the structural layer and pipelines, indirectly increasing the storey height or reducing the building height, thus bringing flexibility to the architectural design;
4. According to the different section shapes of steel bearing plate on the floor, the amount of floor concrete can be reduced by up to 30%. The reduced floor weight can correspondingly reduce the size of beam, column and foundation, improving the overall performance of the structure;
5.Floor steel support plate can be used as permanent formwork of cast-in-place concrete. In this way, the installation and removal of formwork during construction are eliminated, which saves time and labor.
6. In the construction stage, the steel support plate on the floor can be used as the continuous lateral support of the steel beam, which improves the overall stable bearing capacity of the steel beam;
7. The steel support plate on the floor can be used as the bottom reinforcement of the floor, reducing the workload of installing the plate reinforcement;
8. Neat and beautiful appearance.
