Ezzeldin Yazeed
Sayed-Ahmed
Ain Shams University, Egypt
ABSTRACT
Corrugated web girders represent a new structural system emerged in the past two
decades. The girder’s flanges provide the flexural strength of the girder with
no contribution from the corrugated web which provides the girder’s shear
capacity. Failure of the web occurs by steel yielding, web buckling or
interactively between them. Lateral torsion and local flange buckling of
corrugated web girders represent another two possible failure criteria. Here,
the work previously performed by the author on corrugated web girders was
compiled and presented in a comprehensive format. The starting point is the
shear behaviour of the corrugated webs which is investigated focusing on the
failure modes affecting the web design. An interaction equation that considers
web buckling and yielding is proposed. Numerical analyses are performed to
investigate the buckling modes of the corrugated web, verify the validity of the
proposed equation and explore the post-buckling strength of corrugated web
girders. The numerical model is extended to determine the critical moment
causing lateral instability for corrugated web girders. The applicability of the
critical moment design equations, currently used for plane web girders, to
corrugated web girders is examined. The numerical model is then used to
scrutinize the local buckling behaviour of the compression flange. The
applicability of the currently used limiting values for the flange
outstand-to-thickness ratios to corrugated web girders is investigated.