一、前言工程结构中有许多对称结构,如果能利用对称性,就可以用较高的效率完成预定的结构分析。利用对称性的分析方法有着很长的历史,人们早就非常熟悉了。其中应用得最广泛的方法是取一半结构计算(以下简称半结构法)。因为半结构法差不多已接近于最好,因此多年来很少进一 I. Introduction There are many symmetrical structures in the engineering structure. If we can use the symmetry, we can complete the scheduled structural analysis with higher efficiency. The use of symmetry analysis has a long history and people are already very familiar with it. One of the most widely used method is to take half of the structural calculations (hereinafter referred to as semi-structural method). Because the semi-structural approach is almost as close as possible, it is rare for many years to come