Calculation of lateral bracing for cantilever and multispan girders

• Autorzy: Biegus, A.
• Języki publikacji: EN

Abstrakty

EN

General rules of calculation of the roof lateral bracings are presented. In the procedure is limited to a single-span truss bracing, which stabilizes laterally members being under compression produced by forces distributed in the quasi-parabolic form within their length. The paper presents proposals associated with calculation of the horizontal, lateral bracings of roof rafters having a cantilever or multispan scheme. The cantilever to be stabilized is compressed by forces distributed in the quasi-parabolic form, whereas the multispan system is partly under compression and partly under tension. The problem of initially curved member is approached by replacing this imperfection by the effect of on equivalent stabilizing force applied to the transversal bracing of above mentioned systems in a form different from that given in . The theoretical models, which can be employed in the appropriate analysis of the horizontal, lateral bracings for the both, cantilever and multispan systems have been proposed.

Słowa kluczowe

PL

usztywnienie boczne; dźwigar; siła stabilizująca

EN

lateral bracing; cantilever and multispan girders; equivalent stabilizing force

• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2013
• Tom: Vol. 13, no. 1
• Strony: 99--103
• Opis fizyczny: Bibliogr. 10 poz., wykr.

Twórcy

autor

Biegus, A.

• Wroclaw University of Technology, Wrocław, Poland,

Bibliografia

• [1] EN 1993-1-1. Eurocod 3 Design of Steel Structures. Part 1-1: General Rules and Rules for Building.
• [2] J. Lindner, J. Scheer, H. Schmidt, Stahlbauten. Erla uterungen zu DIN 18800 Teil 1 bis Teil 4, Ernst and Sohn, Berlin, 1994.
• [3] N.S. Trahair, S.L. Chan, Out-of-plane advanced analysis of steel structures, Engineering Structures 25 (2003) 1627–1637.
• [4] N.S. Trahair, M.A. Bradford, D.A. Nethercot, L. Gardner, The Behavior and Design of Steel Structures to EC3, Taylor and Francis, London and New York, 2008.
• [5] A. Biegus, Calculation of transversal bracing of cantilever and multispan girders, in: Proceedings of the International Conference on Metal Structures, Wrocław, 2011.
• [6] A. Biegus, Imperfection action of transversal bracing of cantilever and multispan girders, Inżynieria i Budownictwo 11 (2011) 578–581 in Polish.
• [7] R. Goncalves, D. Camotim, On the incorporation of equivalent member imperfection in the in-plane design of steel frames, Journal of Constructional Steel Research 61 (2005) 1226–1240.
• [8] S.P. Timoschenko, J.M. Gere, Theory of Elastic Stability, McGraw-Hill, New York, 1961.
• [9] W.F. Chen, T. Atsuta, Theory of beam-column, MacGraw-Hill, 1976.
• [10] A. Biegus, Stability of compression members under varying axial forces, Inżynieria i Budownictwo 7 (1988) 148–151 in Polish.