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结构理论应是概念清楚,计算简单迅速和正确。排架计算理论繁多,常以不解联立方程为目的。而目前已有排架计算专著和计算手册,都列出了各种类型常用排架的计算公式和独立柱的变位公式等。因此说,不解联立方程问题已解决。但又产生了新问题,其一计算仍较烦,其二如果公式有误(我们曾在工程实践中遇到过此情况),校正工作,不仅是数字校正,而首先是对公式重新推演,造成设计和校正的困难。为解决这两个问题,本文系初次尝试。由于缺乏实践经验,考虑不够成熟,有待进一步研究,使之更加完善。
The structural theory should be clear in concept and simple, quick, and correct. There are many calculation theories of the trusses, and they often aim at solving the simultaneous equations. At present, there is a monograph calculation and calculation manual, which lists the calculation formulas for various types of commonly used framing and the formulas for the displacement of independent columns. Therefore, the problem of not understanding the simultaneous equations has been solved. However, new problems have arisen. One of the calculations is still annoying. Second, if the formula is wrong (we encountered this situation in engineering practice), the correction work is not only a digital correction, but first a re-deduction of the formula. Difficult to design and correct. To solve these two problems, this article is the first attempt. Due to the lack of practical experience and considerations that are not mature enough, further research is needed to make it more perfect.