In this method, such removal is treated as though adding a load case applyingto the original structures, and the internal force redistribution can be calculated without modifyingthe global stiffness matrix.

• 与以往不同，本法仅将杆件撤除现为在原结构上增加荷载工况，因此无需重建总体刚度矩阵，即可用于分析杆件撤除对结构的影响。