Prestressed concrete girders with corrugated steel webs are one of the promising concrete-steel hybrid structures applied to highway bridges. Prestress can be efficiently introduced into the concrete flanges due to the so-called "accordion effect" of the corrugated web. In this paper, a simple approach is presented to account for three-dimensional phenomena of the accordion effect using link-type elements within a two-dimensional finite element model. The vertical links are given a very high stiffness to fully transmit vertical shear force, whereas the horizontal link stiffness is given a value calculated from the out-of-plane bending of a folded plate forming each trapezoidal corrugation. Viability of the approach is demonstrated through comparison of experimental and numerical results for a large-scale specimen of a prestressed concrete beam with corrugated steel web
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2061-2069
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