A. GENERAL

2. Basis of calculation

As a result of its profiling, the web does not participate in the transfer of longitudinal normal stresses from bending. This means that

in which the bending moments and the normal forces are transferred only via the flanges, while the transverse forces are only transferred through the diagonals and verticals of the lattice girder - in this case the corrugated web.

On the basis of this static model, dimensioning and testing is implemented in accordance with DIN 18 800 ([1]-[3]) or DAST-Ri. 015, ([4], Sections 4 and 6) according to the E-P (E-E) method. Accordingly, the verification of the load carrying capacity is ideally provided at the level of internal forces and the cross-sectional resistance of the individual cross-sectional components - flange and web.

Alternatively, calculations may also be based on EUROCODE 3 [5], or any other national standard which contains rulings in respect of lattice girders or open web columns and the transverse buckling of orthotropic plates.

Ascertaining the parameters for the resistance of the corrugated web beam is described in detail in Section 7. This is essentially based on the expertises [6] and [7]*). The procedure is additionally verified by means of experimental results ([8]...[10]).

Standards and Expert Opinions:

• [1] DIN 18 800 Teil 1 (1990), Stahlbauten; Bemessung und Konstruktion.
• [2] DIN 18 800 Teil 2 (1990), Stahlbauten; Stabilitätsfälle, Knicken von Stäben und Stabwerken.
• [3] DIN 18 800 Teil 3 (1990), Stahlbauten; Stabilitätsfälle, Plattenbeulen.
• [4] DAST - Richtlinie 015 (1990); Träger mit schlanken Stegen. (German reccomendations for girders with slender web plates.)
• [5] DIN V ENV 1993-1-1 (1993); EUROCODE 3: Design of steel structures; Part 1-1: General rules and rules for buildings.
• [6] O.Univ. Prof. D.I. Dr. Günter Ramberger, Gutachten über die Berechnung von geschwei§ten I-Trägern mit Stegen aus gewellten Blechen, Wien 20.12.1989. (Expert opinion on the calculation of welded I-beams with corrugated webs, in German)
• [7] O.Univ. Prof. D.I. Dr. Günter Ramberger, 2. Gutachten über die Berechnung von geschwei§ten I-Trägern mit Stegen aus gewellten Blechen, Wien 16.11.1990. (2nd Expert opinion on the calculation of welded I-beams with corrugated webs).
• [8] Test report on experiments carried out on I-beams with corrugated web plates, Vienna University of Technology, Institute for Steel Construction, Department of Applied Model Statics in Steel Construction, August 1990. (in German)
• [9] Report No. 943040: Untersuchung zur Einleitung dynamischer Lasten in Wellstegträger WTB 750 - 300x12, Versuchsanstalt für Stahl, Holz und Steine (Amtl. Materialprüfanstalt) Universität Karlsruhe, 1995. (Investigation into the introduction of dynamic loads into corrugated web beams WTB 750 - 300x12).
• [10] Fire tests on corrugated web beams, Institute for Fire Prevention Technology and Safety Research (Officially Authorised Testing and Experimental Institute) Linz 1995. (in German).
• [11] Final Report on the Bearing Performance of Corrugated Web Beams; Brandenburgische Technische Universität, Lehrstuhl für Stahlbau, Cottbus 1996. (in German).
• [12] Gutachterliche Stellungnahme zur Querkrafttragfähigkeit von Wellstegträgern; Univ. Prof. Dr.-Ing. habil. Hartmut Pasternak, Braunschweig/Cottbus 1996. (Expert statement on the transverse force load carryinging capacity of corrugated web beams).

References:

• [13] Easley: Buckling Formulas for Corrugated Metal Shear Diaphragms. Journal of the Structural Division, ASCE, No. ST 7, July 1975, pp. 1403-1417.
• [14] Kähönen, Zur Einleitung von Einzellasten in I-Träger mit trapezförmig profilierten Stegen. Stahlbau 57, 1988, Heft 8, S. 250. (On the Introduction of Individual Loads into I-Beams with Trapezoidal Profiled Web Plates).
• [15] Lindner, Aschinger: Grenzschubtragfähigkeit von I-Trägern mit trapezförmig profilierten Stegen. Stahlbau 57, 1988, Heft 12, S. 377. (The limit shear load capacity of I-beams with trapezoidal profiled web plates).
• [16] Lindner, Aschinger: Zur Torsionssteifigkeit von Trapezstegträgern. Stahlbau 59, 1990, Heft 4, S. 113. (On the torsional stiffness of trapezoidal web girders).
• [17] Aschinger, Beljaev, Mikhailova: Zur Querkrafttragfähigkeit von I-Trägern mit verschiedenen Stegprofilierungen. Stahlbau 60, 1991, Heft 10, S. 314. (On the shearing force loading capacity of I-beams with various web-profiles).
• [18] Lindner: Zur Bemessung von Trapezstegträgern. Stahlbau 61, 1992, Heft 10, S. 311. (On the dimensioning of trapezoidal web girders).
• [19] Aumayr: Verformungs- und Beulverhalten von Wellblechen unter reiner Schubbelastung, Diplomarbeit, Inst. für Stahlbau, Technische Universität Wien, 1992. (Deformation and buckling behaviour of corrugated plates under pure transverse loading, Master thesis).