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本大讨论用样条有限条法计算有中间支点及内横隔板的两端简支、固定、自由及其他任意组合情况下的等截面弯桥空间内力计算问题。用这种方法计算有内横隔板的连续弯箱梁桥时,不必象一般的有限条法那样借助于力法位移协调方程,而是通过对位移函数的修正,使之完全满足超静定结构的各种约束条件,进而直接算出超静定结构位移函数的最终结果。对于具有任意边界条件(非简支)的弯箱梁桥,其端支承的位移函数也可借变更端部样条函数的简单方法求解,这为有限条法更广泛地用于各种复杂结构开辟了新的途径。
In this paper, the finite-strip method is used to calculate the internal force calculation of the equi-section curved bridge under the conditions of the simple support, fixation, freedom, and any combination of the intermediate pivots and inner diaphragms. When using this method to calculate continuous curved box girder bridges with internal diaphragms, it is not necessary to use the force method to displace the coordination equation as in the general finite strip method. Instead, the displacement function is corrected to fully satisfy the statically indeterminate equation. The various constraints of the structure, and then directly calculate the final result of the statically indeterminate structure displacement function. For curved box girder bridges with arbitrary boundary conditions (non-simplicity), the displacement function of the end bearing can also be solved by a simple method that changes the end spline function. This is a more limited method used for various complicated structures. Open up new ways.