NONLNEAR BEHAVIOUR OF CURVED GIRDER-WEB CONSIDERED FLANGE RIGIDITIES By Katashi FUJII* and Hiroshi OHMURA** The web of thin walled curved girder deflects out of surface by bending moment because of it's curvature. This deflection causes the deformation of the cross section of the curved girder, by which the behaviour of curved girders will be complicated. In this paper, the part of curved girders between vertical stiffeners was analysed, regarded as sectoral plates and cylindrical shell panel

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... ructure. The interaction of flanges and web panel was also considered and evaluated. Several numerical examples show that the deformation of curved I-girders is affected by tosional behaviour of the flange besides shell action of the web.