Title

Shear strength of end web panels

Author's Department

Construction Engineering Department

Document Type

Research Article

Publication Title

Civil-Comp Proceedings

Publication Date

1-1-2012

Abstract

In most classical failure theories for post-buckled web panels subjected to pure shear, it was assumed that diagonal tension strip was anchored by flanges and, or adjacent web panels. Such an assumption led to the conclusion that post-buckling strength can only develop in intermediate web panels. Accordingly, the AISC specification do not account for post-buckling strength in proportioning end web panels. In this paper, the shear strength of perfect end web panels stiffened with endbearing and transverse stiffeners was investigated using the finite element method. The analysis accounts for both geometric and material non-linearities. Numerical results were verified by comparison with classical theory and experimental results published in the literature. Contrary to most post-buckling theories, it was shown that end web panels developed tension field action after buckling and principal tensile stresses were balanced by growing compressive stresses in end-bearing stiffeners and portions of the web stiffened by flanges and stiffeners. An extensive parametric analysis was conducted on end web panels to assess the effect of geometric parameters on shear strength. Numerical results were used to establish a mathematical expression for the ultimate shear strength of perfect end-web panels including tension field action. © Civil-Comp Press, 2012.

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