The analysis of shear buckling resistance and the results of investigations into corrugated web girders indicate a substantial influence of rigid support stiffeners on shear buckling resistance of the corrugated web.In simply supported SIN girders,support stiffeners can be made from I-sections or T-sections.In cantilever girders,however,the role of support stiffener can be performed by end plate joint that connects the cantilever and span parts of the girder.This study reports investigations into a change in the shear angle in simply supported and cantilever girders with a corrugated web.Experimental investigations were conducted using WTA,WTB and WTC girders with the web height of 1000,1250 and 1500 mm.The load-displacements paths(LDPs)of the shear angle P(γ)were analysed.It was demonstrated that rigid support stiffeners contribute to an increase in the linear range of changes in the shear angle in the LDP P(γ).That is equivalent to an increase in the value of shear buckling resistance up to 42%.The buckling resistance,obtained on the basis of measurements of the shear angle y,was compared with the results obtained from the measurements of the first buckling load,with the solution developed by the author,and also with a widely used computational model acc.Eurocode 3.
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