Abstract
This paper reports the test results of twelve curved model girders subjected to the combined loads of bending and shear by changing radii of curvature, aspect ratio and slenderness ratio of web plates as well as stiffness of longitudinal stiffeners. Through the collapse tests. buckling and ultimate strength of curved girders are investigated as the interaction curves of bending and shear. For the ultimate strength. two interaction curves are proposed, i. e. one is a theoretical curve taking accounts of the reduction of ultimate strength for bending due to warping stresses on the curved flange plates and the other is experimental one based upon our past test researches on pure bending and pure shear.
