The combined metal structures with the calculating regulation efforts

• Autorzy: Gogol M.

Identyfikatory

DOI

10.7862/rb.2015.181

Warianty tytułu

PL

Łączone konstrukcje metalowe zgodne z regulacjami obliczeniowymi

• Języki publikacji: EN

Abstrakty

EN

The results of analytical studies of the stress deformation state (SDS) regulation in combined structures are presented. A unified design model of combined systems was proposed (based on the decomposition of the system) as a beam on elastic supports, which simulates the beam stiffness and elastic support system. The essence of the calculation: first, based on decomposition of the system, the system is divided into two subsystems - major and supporting. Furthermore, using synthesis system calculated its SDS. The rationality criterions of energy efficient design are: stress equality, bending moment equality, maximal inflexibility or minimum structure mass. The mathematical model of iterative design process of rational combined structure was shown. It is shown that the main advantage of the developed calculation method for combined structures SDS regulation is calculated stress equality section of the beam stiffness, which gives them a decisive advantage in comparison with similar structures without the SDS regulation. Based on the results of the research, there were proposed new structural forms of combined systems that are protected by patents of Ukraine for inventions. The result is a decrease in the mass of metal structures up to 30%. Simplified topology decreases the cost of structure manufacturing.

PL

W artykule zostały zaprezentowane wyniki badań analitycznych konstrukcji łączonych według przepisów w stanie odkształconym (SDS). Zaproponowano zunifikowany model projektowy (oparty na dekompozycji struktury), jako belkę na sprężystych podporach które imitują sztywność belki i sprężystego systemu podpierającego. Istota obliczeń polega na rozdziale konstrukcji na podkonstrukcję główną i drugorzędną. Ponadto, wykorzystując syntezę oblicza się ją w stanie SDS. Racjonalne kryteria metody energetycznej to: równowaga naprężeń, wyrównanie momentów zginających maksymalna sztywność lub minimalna masa konstrukcji. Przedstawiono również matematyczny model iteracyjnego procesu projektowania racjonalnej konstrukcji łączonej. Wskazuje on, że główną zaletą opracowanej metody obliczeniowej dla przekroju usztywnionej belki uzyskano korzyści w stosunku do podobnej konstrukcji bez wykorzystania przepisów SDS. Na podstawie wyników badań, zaproponowano nowe formy konstrukcji łącznych, które są chronione patentem Ukrainy. Uproszczona topologia zmniejsza koszty produkcji i masę konstrukcji o 30%.

Słowa kluczowe

EN

model; stress deformation state; SDS; energy criterion; stress balance; mathematical model; iterative design process; metal structure; combined structure

PL

model; stan naprężenia; SDS; kryterium energetyczne; równowaga naprężeń; model matematyczny; proces projektowy iteracyjny; konstrukcja metalowa; konstrukcja łączona

• Wydawca: Oficyna Wydawnicza Politechniki Rzeszowskiej
• Czasopismo: Czasopismo Inżynierii Lądowej, Środowiska i Architektury / Journal of Civil Engineering, Environment and Architecture
• Rocznik: 2015
• Tom: z. 62, nr 4
• Strony: 107--118
• Opis fizyczny: Bibliogr. 22 poz., il.

Twórcy

autor

Gogol M.

• National University Lviv Polіtekhnіka, Ukraine

Bibliografia

• [1] Advances in Steel Structures: Proceedings of the Fourth International Conference on Advances in Steel Structures 13–15 June 2005, Shanghai, China. Volume I. Edited by Z. Y. Shen, G. Q. Li, S. L. Chan. Amsterdam: Elsevier, 2005. 917 p.
• [2] Egorov, V. V. The development of constructive forms and methods of calculation of combined systems of strut_framed type: Authors abstract, Ph.D. thesis in Engineering science: Specielity 05.23.01 «Civil constructions, buildings and structures». St. Peterburg, 2004, 49 p. (in russian).
• [3] Ferenchik, P.; Tohachek, M. Prestressed steel structures. Moscow: Strojizdat, 1979. 423 p. (in russian).
• [4] Gogol, M. V. Design and calculation of rational combined metal structures. Journal of Metal Constructions. Vol. 14, No 4, pp. 253–262, 2008 (in ukrainian).
• [5] Gogol, Miron. Shaping of effective steel structures. In: Civil and Environmental Engineering: scientific publications Politecniki Rzeszow. Rzeszow, No. 264, Z. 52, pp. 43-56, 2009.
• [6] Gogol, M. V. Calculation bulk farm when working in confined plastic deformation. Theory and practice of construction: proceedings of the National University "Lviv Polytechnic". Lviv, No. 545. - pp. 32-35, 2005 (in Ukrainian).
• [7] Gogol, M. V. Generalized method of calculation of metal structures taking into account force control. In: Mercury of National University «Lviv polytechnic» Theory and practice of civil engineering, Lviv, No 462, p. 25–34, 2002 (in ukrainian).
• [8] Gogol, M. V. Method and rational design algorithm combined metal structures.. Metal structures. Vol 20, № 1. - pp. 29-43, 2014 (in ukrainian).
• [9] Gogol, Myron; Peleshko, Ivan; Bilskyj, Mykhajlo. New constructive forms and their reliability. In:Quality and Reliability in Building Industry: IV. International Scientific Conference, 17–19 Oct. 2006: Conference, 17–19 Oct. 2006 : Proceedings /Technical University of Kosice. – Levoca, Slovakia : Technical University of Kosice, 2006. – S. 9.
• [10] Gogol, M. V. Rational calculation and design combined metal structures. Journal of Modern industrial and civil construction. Vol 10, No. 1, - pp. 79-90, 2014 (in ukrainian).
• [11] Guide to Stability Design Criteria for Metal Structures / Edited by Ronald D. Ziemian. 6th Edition. Chichester: John Wiley & Sons, 2010. 1120 p.
• [12] Guide to Stability Design Criteria for Metal Structures / Edited by Theodore V. Galambos. New York: John Wiley & Sons, 1998. 911 p.
• [13] International Association for Structural Control (IASC). Vol. 3, No. 1, May, 1998. http://www.usc.edu/dept-00/dept/civil_eng/structural/Newsletter_v3n1.pdf
• [14] Lubinski, M.; Filipowicz, A; Zoltowski, W. Metal structures. Part 1. Warsaw: "Arcade", 2003. 646 p. (in polish).
• [15] Lubinski, M.; Zoltowski, W. Metal structures. Part 2. Warsaw: "Arcade", 2004. 566 p. (in polish).
• [16] Permiakov, V. O.; Gogol, M. V. Design recommendations of well-minded metal loadcarrying structures of overhead covers and covers. Lviv: Publisher National University «Lviv Politechnique», 2006. 24 p. (in ukrainian).
• [17] Permiakov, V. O.; Gogol, М. V.; Peleshko, I. D. Combined metal structures with regulation and their optimization. In: Science and innovation in current civil engineering: International research_to_practice conference, 17–19, October, 2007. St. Peterburg: SPbGASU, 2007, p. 142–145 (in russian).
• [18] Permiakov, V. O.; Gogol, М. V. The problems of regulation of stress and strain state of two dimensional bar metal structures. In: Mercury National University «Lviv Politechnique»: Theory and practice of civil engineering. Lviv, No. 495, pp. 154–157, 2004 (in ukrainian).
• [19] Permiakov, V. O.; Nіlov, A. A.; Shymanovskyi, O. V. Edited by Permiakov, V. O.; Shymanovskyi, O. V. Metal structures. Kyiv: Publisher «Steel», 2008. 812 p. (in ukrainian).
• [20] Pichugin, S. F.; Semko, A. V.; Trusov, G. N. Modern problems of bearing steel structures designing for industrial and civilian structures. In: Modern Industrial and Civil Construction, Volume 1, No 1, p. 53–66, 2005 (in ukrainian).
• [21] Trofimovich, V. V.; Permiakov, V. A. Optimal design of metal structures. Kyiv: Constructor, 1981. 136 p. (in russian).
• [22] Yankovskii, A. P. Equal stressed reinforcing of thinslab structure: Doctoral dissertation in Physico-Mathematical Science. 01.02.04. Novosibirsk, 2007. 48 p. (in russian).