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换算刚度法是1980年提出并得到较快发展的结构分析方法。它在计算多孔连拱、采用橡胶支座的多孔简支梁、多孔连续梁时,具有明显的优越性,不少单位(北京、江西、河南等)已用于生产实践。 本文根据换算刚度法的基本原理,导出一般刚架的普遍计算公式。用以计算等截面及变截面刚架时,公式统一,计算简便,为一般刚架的计算提供了新的、简便的计算途径。特别是计算内力影响线,尤为方便。
The method of calculating rigidity is a structural analysis method proposed in 1980 and developed rapidly. It has obvious superiority when calculating perforated arch, perforated simply supported beam with rubber bearing and continuous perforated beam. Many units (Beijing, Jiangxi, Henan, etc.) have been used in production practice. According to the basic principle of conversion stiffness method, this paper derives the general formula of general rigid frame. When used to calculate constant cross-section and variable cross-section rigid frame, the formula is uniform and the calculation is simple, which provides a new and simple calculation method for the calculation of general rigid frame. In particular, the calculation of the impact of internal force line, especially convenient.