Abstract
This paper presents the results of experimental investigations performed on beams with corrugated webs. The aim of the research was to determine the effect of the geometric parameters of the sinusoidal web on the behavior of I-beams subjected to four-point bending. Special attention was paid to the effects of web thickness and wave geometry on the deflection of beams. The obtained failure modes of particular test samples are presented. Reference has also been made to the determined standard load capacities based on Annex D of the EC3 standard. In order to compare the performance of beams with corrugated webs, the results for beams with flat webs of the same thickness of web sheets are also presented.
Highlights
Welded steel girders are mainly I-beams, which consist of a bottom flange, a top flange and a web
The corrugation of the sheeting provide ribbing in the web. It leads to the removal of stiffening ribs. This reduces the intrinsic weight of the plate girder by up to 40% compared to a flat web plate girder [3]
26.3%, with aincreasing percentagethe increase in failureresulted load values respect to beams with a flat sheet web, where web thickness in a of 47.3% and 44.1% for BS 200 and BS 381 beams, respectively. This is a major difference with respect to beams with a flat sheet web, where increasing the web thickness resulted in a percentage increase in a failure load of 87.7%, with a simultaneous percentage increase in deflections as much as of percentage increase in of a failure load
Summary
Welded steel girders are mainly I-beams, which consist of a bottom flange, a top flange and a web. In order to eliminate the problem related to the loss of web stability, the thickness of the web may be increased, or additional stiffeners (transverse and longitudinal) may be applied, in the form of ribs made of flat plates. It leads to the removal of stiffening ribs This reduces the intrinsic weight of the plate girder by up to 40% compared to a flat web plate girder [3]. Most research is carried out on this type of plate girders Based on these assumptions, the performance of plate girders with corrugated can trapezoidal sheeting [5,6,7]. The beams were tested in a four-point bending scheme Based on these assumptions, the performance of plate girders with resistance [26,27,28].
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