摘要
空间缆索体系悬索桥的主缆和吊索是耦合的,在平面缆索线形计算中常常采用的线形变化刚度法和影响矩阵法在空间缆索计算中可能面临收敛困难的问题。基于空间分段悬链线理论,对影响矩阵法加以修正,建立了空间主缆线形的迭代算法,采用C++语言编制了相应的计算程序,并通过模型试验对程序进行验证。计算表明:该算法具有精度高,能快速收敛等优点。
Main cable and hangers are coupling in spatial cable system of suspension bridge. The shape-change stiffness method and influence matrix method, which are widely used in plane cable shape calculation, can＇t guarantee the calculation convergence for spatial cable shape calculation. On the basis of the spatial segmental catenary theory,this paper modified the influence matrix method, established the iterative algorithm for spatial main cable shape, and compiled the corresponding computing program by using C ＋＋ language, which was verified by the model test. The calculation results indicated that the proposed method has the advantages such as high accuracy ,fast convergence and etc.
出处
《铁道建筑》
北大核心
2013年第4期13-16,共4页
Railway Engineering
基金
国家自然科学基金资助项目(51178396)
关键词
悬索桥
空间主缆
主缆线形
影响矩阵法
Suspension bridge
Spatial cable
Main cable shape
Influence matrix method
