MATEC Web Conf.
Volume 251, 2018VI International Scientific Conference “Integration, Partnership and Innovation in Construction Science and Education” (IPICSE-2018)
|Number of page(s)||8|
|Section||Engineering and Smart Systems in Construction|
|Published online||14 December 2018|
Optimization of flat-oval pipes and perspectives of their application in beam structures
Department of Project Grant Organization, Institute of Service, Tourism and Design (branch) of North Caucasus Federal University in Pyatigorsk, 357500, Pyatigorsk, St. 40 let Octyabrya, 56, Russia
2 "Construction” Department, Institute of Service, Tourism and Design (branch) of North Caucasus Federal University in Pyatigorsk, 357500, Pyatigorsk, St. 40 let Octyabrya, 56, Russia
3 "Design” Department, Institute of Service, Tourism and Design (branch) of North Caucasus Federal University in Pyatigorsk, 357500, Pyatigorsk, St. 40 let Octyabrya, 56, Russia
* Corresponding author: firstname.lastname@example.org
A new technical solution for re-profiling round tubes into flat-oval ones with a ratio of 1 / 3,064 is presented, which increases their bending strength. The calculation of the optimal parameters of thin-walled sections of the flat-oval shape is given by an approximate method, the correctness of which is confirmed by testing from the standard profiles used. This calculation is repeated with respect to thin-walled sections of the oval shape. The whole diagram of changes in the design parameters of flat-oval and oval pipes is presented in the transformation of their cross-sections from vertical configurations to horizontal ones, including the transition through the outline of a circular shape. The comparative analysis of optimized cross sections of flat oval, oval and round tubes is carried out taking into account the elastic and elastic-plastic deformations of the structural material, where the length of the midline of the thin-walled section is taken as the dividing line between these deformations. The choice is substantiated in favour of flat-oval profile pipes due to their simpler shape including faces of constant curvature (flat and semi-circular), relatively low cost, lower height, greater compactness, higher resistance moment.
© The Authors, published by EDP Sciences, 2018
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