以下为句子列表：
英文: Based on the theory of thin-walled curved bar, reasonable hypothesized a third-ord parabolic curve, the paper adoptes variational method on energy, taking the coupled relationship of the effect of curvature radius, bend, torsion and shear-lag into conside
中文: 摘要文章以薄壁曲杆理论为基础，合理地假设了三个剪力滞翘曲位移函数，应用能量变分法推导出考虑曲率半径影响、弯、扭、剪力滞耦合的曲线箱梁弹性控制微分方程及其边界条件，为薄壁大曲率箱梁剪滞效应建立了理论分析基础。
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