Abstract
The ultimate shear resistance of a plate girder with the transversely stiffened web has a significant component of postbuckling strength. Tension field theories explain the mechanics behind the generation of the postbuckling strength and predict the ultimate shear resistance of a stiffened web panel. Current research shows that the assumptions made in these theories are not in agreement with the actual postbuckling mechanics and these theories also neglect some important parameters which affect the postbuckling strength. It is important to review the background research in the development of tension field theories to understand the current research. The main objectives of this paper are to focus on the historical development of Tension field theories, discuss the general mechanism proposed by the Tension field theories and the limitation of these as outlined by the current research. In addition, it also provides details of the additional parameters affecting the postbuckling strength.
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