First, economies bring order made to your intended BEAM HONEYCOMB later, with nice appearance and installation advantages in the form of a transition to hardware that allows the honeycomb cavities in the body, are beams species that find application. When the advantages such as lightness, scarcity of paint area are added, this application area has become quite widespread.
The economy provided in the use of steel material gains more importance especially in places where not every profile can be found easily, such as in our country. From this point of view, the necessity of showing the necessary care in the project design of PETEK KIRİŞLER emerges.
“Honeycomb Beams”, which is a common application in the field of Steel Structures, differs from other applications in terms of both calculation and construction. It is extremely important to solve the issue of choosing the most suitable “I” profile to be used in the construction of the honeycomb beam and especially the way to be followed in the cutting process, practically and economically.
The beams with hollow bodies, which are obtained by cutting the bodies of various “I” profiles as shown in the figure below, sliding the two parts formed after cutting relative to each other a little, and welding them as in the figure, are called “Honeycomb Beams”. This type of beam is given this name because the body spaces are hexagonal and honeycomb-like. Honeycomb beams are called “Wabentrüger” in German, “Open-Web Expanded Beam” in English, and “Poutres â ame evidee” in French.
The body gaps of honeycomb beams can also have an octagonal appearance in some cases due to the spacer plates used to increase the beam height.
The historical development of honeycomb beams dates back to 1928. The first applications of these beams, unlike the current situation, are found in European countries except Germany. In the past, in Germany, the desire to use, which was based on the beauty of appearance, was gradually replaced by the advantage of economy brought by these beams. Today, the most common application of such beams is found in Germany.
Advantages of Honeycomb Beams
As it is known, the bending moment carrying capacity of the members trying to bend, namely beams, increases in proportion to the square of their height. Therefore, it is necessary to increase the height of the steel beams.
While doing this process, keeping the steel material costs at the lowest level gains importance in terms of economy. Honeycomb beam type was found as a result of the research carried out within the framework of this thought. So, the first advantage expected from these beams is the steel material “ECONOMI”. However, it is worth mentioning that if the honeycomb beam is not properly calculated and constructed, the economy in question will not be at the expected level and its safety will not be sufficient.
The second advantage due to material economy is “LIGHTWEIGHT”. Thus, the weight of the structure consisting of honeycomb beams is considerably reduced. There are also a number of other advantages revealed by the gaps formed in the body of the honeycomb beams. The installation equipment of the building can pass through these gaps and the problem of increasing the height of the building more than necessary is eliminated.
Body gaps reduce the paint area of the beam and therefore the paint expenses. Finally, these gaps affect the appearance of the beam and create a decorative, pleasing appearance within the structure. In the honeycomb beam, which is higher than that of a profile beam with the same bending stiffness, the amount of deflection is also much reduced. When the honeycomb beams are calculated and manufactured as required, it is possible to benefit from all of the above-mentioned theoretical advantages of the honeycomb beams in the widest way in the field of application.
Scope of application
If various literature is examined, it will be seen that honeycomb beams have a very common application area. The main ones can be listed as follows.
- -In love,
- -As floor main beam or floor beam in high-rise buildings,
- -As beams and columns in hal type constructions,
- -As a sed element in sed systems,
- -As a crane beam,
- -As the steel beam of composite systems,
- -As a crosswalk beam of bridges.
However, the lateral buckling problem that occurs in some applications of honeycomb beams needs to be solved. This is very important as these are high-bodied beams. After the construction is completed, if the pressure-operated head of the honeycomb beam is held sufficiently, safety is ensured. Therefore, it may be appropriate to use honeycomb beams as reinforced concrete slab carrier beams as purlins in rigid coated roof systems. As long as the beam head is adequately attached to the rigid sheathing. Therefore, it is worth mentioning that one should be careful when using honeycomb beams in the above-mentioned application areas.