摘要
本文针对吊桥在施工过程中为几何可变体系和在成桥后恒载全部由主索承担的力学特点,从自由悬索的解析解出发,基于主索的平衡条件和连续性条件,提出了一种适合于电算的求解主索张力和索形的高精度近似值的迭代方法。用该法进行分析时,不受索段长度和垂度限制。计算过程表明,该算法计算精度高,收敛速度快,是吊桥施工控制分析与恒载初内力分析的理想方法。
in this paper, a method for the analyses of suspension bridge in erecting and its ini-
tial stress under dead load based on the equilibrium and continuity of main cable is given. This method
can be applied to computer calculation conveniently with high accuracy and convergence speed. The
availability of this method is verified by examples.
出处
《石家庄铁道学院学报》
1992年第4期1-9,共9页
Journal of Shijiazhuang Railway Institute
关键词
无弯矩状态
初内力
索结构
悬索桥
free from moment
accessary influence
initial stress
suspensional structure
