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以能量变分原理为基础,在曲线箱梁侧向综合考虑了剪力滞后和剪切变形效应的影响,建立了薄壁曲线箱梁的侧向弹性控制微分方程和自然边界条件,获得了相应广义位移的闭合解.论文提出了一种曲线箱梁侧向静力学特性分析的解析法,揭示了各参数之间的内在联系.算例中论文解析解与板壳有限元结果吻合较好,证明了本文方法的有效性,因而更具理论价值和工程实际意义.
Based on the principle of energy variation, the influence of shear lag and shearing deformation is comprehensively considered in the curved box girder. The lateral elastic governing differential equations and natural boundary conditions of thin-walled curved box girders are established, A closed solution of generalized displacements is proposed.The paper presents an analytical method for the analysis of lateral statics of curved box girders and reveals the intrinsic relationship among the parameters.The analytical solutions of the thesis agree well with the finite element results of the plate and shell, The validity of the method in this paper is proved, which is more theoretical and practical.