科研之友
微信
新浪微博
Facebook
分享链接
摘要
Based on the theory of thin-wall curved bars, an approach is proposed for analyzing the mechanical characteristics of curved box girders with large cantilever slabs. Taking into account of the effect of flexure, warping torsion (including secondary warping shear effect), shear deformation and shear lag effects, two different longitudinal displacement difference functions are employed to accurately reflect the amplitude of change of shear lag in the thin-wall curved box girders with wing slabs of various widths. The minimum potential principle is applied to establish the governing differential equations and the corresponding natural boundary conditions, and closed-form solutions of generalized displacements are obtained. Variations of stress and shear lag effects of curved box girders, caused by variations of such factors as span-width ratio and type of loading and curvature radius, are discussed. The finite shell element solutions are compared to verify the analytical solutions.
- 出版日期2010
