For the optimization of the continuous variables, the author combines the weaken idea, the DFP and the gradient projection method to form a modified Goldfarb method by which the optimal problems of the trusses can be solved.

• 对于连续变量优化，作者将松弛思想、变尺度公式和梯度投影法相结合，建立了一种专门解决杆系优化问题的修正Goldfarb法，算例计算表明本法是针对性强、效率高的优化算法。