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本文导出有限差分法的三弯矩方程,示例说明对超静定平面刚架的解题方法,对于求解变截面超静定刚架,特别有效可行。
This paper derives the three-moment equations of the finite difference method. The example shows that the method for solving the statically indeterminate planar rigid frame is particularly effective and feasible for solving the uncertain statically rigid frame with variable section.