在对称刚架的设计中,对一个预定好的计算模型,多数设计人员均可完成受力计算、细部设计等工作。但对于如何才能科学地选择出性价比较高的刚架初始设计体型,大多数设计人员研究均相对较少,目前的研究成果也非常少。提出了基于渐进结构优化(ESO)法的设计对称刚架初始体型的方法,原理简单,可操作性强、易于编程、且便于推广使用。 In the design of symmetrical frame, for a predetermined calculation model, most designers can complete the stress calculation, detailed design and so on. But how to scientifically choose a high-cost rigid frame initial design body, most of the designers are relatively few studies, the current research results are also very small. A method of designing the initial shape of the symmetrical rigid frame based on the method of incremental structure optimization (ESO) is proposed. The method has the advantages of simple principle, strong operability, easy programming and convenient popularization and use.