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随着科学技术的发展,薄壁曲梁结构在工程中得到了广泛的应用。特别在高速公路或城市道路的弯桥中,曲梁结构更不可少,由于薄壁曲梁弯扭变形颇为复杂,对它的计算又非常繁冗,因此阻碍了曲梁理论的应用和推广。针对上述问题,本文运用把结构划分成单元的思想及按端点、单元交界面条件列方程的方法把符拉索夫薄壁理论推广应用到多跨曲梁和圆环的求解,同时在分析符拉索夫曲梁微分方程解题规律的基础上,编制出曲梁、圆环的计算机通用程序,使这类结构计算繁难的问题得到了解决,使理论研究具有实用意义。
With the development of science and technology, thin curved beam structures have been widely used in engineering. Especially in the curved bridges of expressways or urban roads, the curved beam structure is indispensable. Since the bending and torsion deformation of thin-walled curved beams is rather complicated and its calculation is very complicated, it hinders the application and promotion of curved beam theory. In view of the above problems, this paper uses the idea of dividing the structure into units and the equations of the conditions of the terminal and unit interfaces to apply the Vlasov thin-wall theory to the solution of multi-span beams and rings, and analyze the Based on the law of solving problems of the Fuqu Liang differential equations, the computer general program of the curved beam and the ring was compiled, which made the computational difficulties of this kind of structure solved and made the theoretical research practical.