结合两个算例,研究了基于节点应变能灵敏度拱轴线选择的方法,指出根据节点应变能灵敏度进行结构形状优化,降低了结构应变能,改善了结构的综合性能,达到了更加合理的结构形态。 Based on two examples, the method of selecting axis of arch axis based on sensitivity of joint strain is studied, and the optimization of structure shape according to the sensitivities of node strain energy is pointed out. The structure strain energy is reduced, the overall performance of structure is improved and a more reasonable structure is achieved .