摘要
根据悬索桥的受力特点,发展了悬索桥成桥主缆线形计算的精确方法———分段悬链线法。本方法采用解析表达式、用数值迭代计算法解决给定的问题,是一种精确的方法。本文的方法不存在用有限元法或传统的抛物曲线、悬链曲线法计算时的那种假设误差,它根据力学平衡条件和变形相容条件确定各部分的索力和曲线形状,自动计入了索曲线的所有非线性。
According to mechanics characteristics of suspension bridge,an exact method of calculating the cable curve of suspension bridge is developed ,which is segmental catenary method. This proposed method uses mathematic expressions and iterations to solve the problem, and it is a reliable and accurate method. According to the condition of force equilibrium and the condition of deformation compatibility, it determines every part of cable forces and curve shapes without the hypothesis errors such as the finite element method, custom parabola method and the catenaries method, so it includes automatically all nonlinearities of catenary curve.
出处
《铁道学报》
EI
CAS
CSCD
北大核心
2003年第1期87-91,共5页
Journal of the China Railway Society
基金
铁道部科技研究开发计划项目(2000G022 A 05
2000G022 A 2)
关键词
悬索桥
主缆线形
悬链线
计算方法
suspension bridge
cable curve
catenary
calculation method
