铁道科学与工程学报2017，Vol.14Issue(10)：2162-2169,8.
单索面曲梁悬索人行桥主缆线形分析
Cable shape analysis of curved suspension footbridge with single cable plane
摘要
Abstract
A non-linear finite element iteration method combined with numerical calculation was proposed and the suspension bridge analysis function of Midas/Civil software was extended to fulfill the main cable shape-finding analysis. The rigid roller reactions in a curved beam bridges were obtained and used as reference values of the vertical component of the tension force of the hanger to control the sag in the vertical plane. And simultaneously, the lateral force was determined by adjusting trigonometric angular relation between the hangers and main cable in each iteration to control the horizontal sag of main cable. The iteration was not stopped until the convergence was obtained. The three dimensional space finite element model of the single cable plane curved suspension bridge was finally established. The calculation results show that the main cable shape is smooth. The tower, main cable and hanger are rationally arranged and the internal force of the hanger is evenly distributed. All of these results verify the correctness of the iterative method and provide a reference for the design and analysis of these complicated bridges.关键词
单索面曲梁悬索桥/迭代法/找形分析/成桥状态/非线性有限元Key words
curved suspension bridge with single cable plane/iteration method/shape finding/finished bridge state/nonlinear finite element method分类
交通工程引用本文复制引用
李立斌,王立彬,李建慧..单索面曲梁悬索人行桥主缆线形分析[J].铁道科学与工程学报,2017,14(10):2162-2169,8.基金项目
国家杰出青年科学基金资助项目(50725828) （50725828）
江苏省高校自然科学研究项目(12KJB560003) （12KJB560003）
江苏高校优势学科建设工程资助项目(PDPA) （PDPA）
