TYPES OF HSS SOULE
Soules which are possible to build using H.S.S sections are categorized into two groups:
– Soules with rectangular H.S.S columns and beams manufactured using the sheet beams method.
– Soules with rectangular H.S.S columns and beams made of C.H.S circular construction sections.
1- Soules with rectangular H.S.S columns and beams manufactured using the sheet beams method In this design, instead of using I-shaped columns with variable section, the beam is selected from H.S.S construction sections and the anchor of frame is controlled on both sides above by strengthening brackets through increasing of section. This type of soule can be implemented as an arc beam or vestibule.
2-1- Arc soules with rectangular H.S.S columns and beams made of C.H.S circular construction sections
In this method, in addition to use H.S.S construction sections as columns, beams are also manufactured by combining a pair of C.H.S circular construction sections. The advantage of this method over the first one is in its higher resistance and beauty.
2-2- Arc soules with rectangular H.S.S columns and beams made of C.H.S circular construction sections
In this method, in addition to use H.S.S construction sections as columns, beams are also manufactured by combining a pair of C.H.S circular construction sections. The advantage of this method over the first one is in its higher resistance and beauty.
Benefits of H.S.S Soule
Using structural sections HSS in building silos, which can be significant savings in time and cost. This new structure while having less weight, torsional resistance than conventional methods niches made. An important advantage of these niches, eliminating the architectural limitations of conventional construction methods Salon is a protrusion of the spinal muscles.
1- Structural weight reduction by using high tensile strength steels
In this project, the company intends to use ST44 and ST52 steels instead of the conventional ST37 steel for production of hollow structural sections (H.S.S.). The yield strength of ST44 and ST52 is 2900 and 3400 kg/cm2 respectively, while the yield strength of ST37 steel is 2400 kg/cm2; and by using this method, approximately 20 to 30% of the total weight of the structure will be reduced. Since the prices of ST44 and ST52 steels are about 2 to 3% more than the ST37, this method will contribute to saving of about 17 to 27% in the overall cost of the project.
Application of structural sections in construction of soules will lead into reduction of around 50-60% of welding, 25-30% of paint volume and 1-2% of material wastage caused through cutting. This method will also help in 50% reduction in the labor-related costs.
These factors altogether would significantly reduce the manufacturing costs; additionally, since these types of soules are lighter, therefore the final cost would be considerably low.
3- Removal of architectural constraints
The common lateral protrusion of columns, due to non-uniformity of the column cores, would be much less through usage of H.S.S. in building soules, which plays a key role in tems of application and aesthetics of the soules.
4- Increased torsional strength
Hollow sections are the most effective cross-sections for bearing torsional moments; because the materials are distributed symmetrically around the axes of sections in them. The comparison between the open and hollow sections with almost same weight in the opposite table indicates that the hollow sections torsional constant parameter is about 200 times more than the open ones.
Also, this prominent feature exists in the soules designed with hollow structural sections (H.S.S.). The soules built with H.S.S. have higher resistance against the torsional moments, which is generally considered as the main cause of soule failure.