Abstract: The global shear buckling of corrugated steel plates plays a vital role in the vertical shear design of prestressed concrete box girders with corrugated steel webs. Thusly, an estimation of the global shear buckling capacity of corrugated plates with edges elastically restrained against rotation is presented. The corrugated plate was modeled as an orthotropic thin plate and elastically rotational restraint on boundary edges was taken into account in the form of rotational springs. The implementation was carried out by utilizing the principle of resident potential energy and Rayleigh-Ritz method. The results show that the prediction of buckling capacities of corrugated plates is consistent with those predicted by existing formulas for the limiting cases of simply-supported and clamped edges. And the restraints in the direction with larger flexural stiffness determine buckling capacities of corrugated plates, while the effect of the restraints in the direction with smaller flexural stiffness can be neglected. Finally, the equivalent rotational spring constants are proposed to evaluate the actual boundary conditions of corrugated web in a real girder.