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本文以悬索结构为研究对象,选取单根悬索为对象,做出如下两种基本假定:第一,认为索是理想柔性的,即不能受压,不能受弯,只能受拉,由于索的截面尺寸与索长相比十分微小,因而在计算中可不考虑界面的抗弯刚度;第二,认为索在使用阶段符合胡克定律。运用结构力学知识进行内力分析,重点分析了均布竖向荷载作用下悬索的张力与曲线方程,得到索内水平张力F_H的计算方程和索内张力F_T与水平分量F_H比值的计算方程。
In this paper, the suspension structure as the research object, select a single suspension as the object, to make the following two basic assumptions: First, that the cable is ideal flexible, that can not be pressure, can not be bent, only tension, due to Cable section size and cable length is very small, so in the calculation of the interface can not consider the bending stiffness; Second, that the cable in the use stage in line with Hooke’s law. The internal force was analyzed by structural mechanics, and the tension and curve equation of the cable were analyzed emphatically. The calculation equations of the horizontal tension F_H and the calculation of the ratio of the internal tension F_T and the horizontal component F_H were obtained.