铁道标准设计2017，Vol.61Issue(4)：79-82,4.DOI:10.13238/j.issn.1004-2954.2017.04.018
大跨度铁路斜拉桥换索方案设计与受力性能分析
Design and Stress Analysis of Cable Replacement for Long Span Cable-stayed Railway Bridge
张乃乐1
作者信息
- 1. 怀邵衡铁路有限责任公司,长沙 410008
- 折叠
摘要
Abstract
Because of the security insufficiency and functional degradation of stay cables, the cables of cable-stayed bridge should be replaced after a certain period of service.Based on a large span double track cable-stayed railway bridge, a cable replacement approach is proposed for a single defected cable replaced without traffic interruption.A three dimensional nonlinear finite element method is introduced to calculate the structure effect caused by the replacement.The result shows that every component of the bridge meets the requirement of the codes on cable replacement, and the proposed method is safe and feasible.Cable tensioning procedures and working conditions for cable replacement are put forward to ensure structural rationality of the bridge during the entire process of cable replacement关键词
铁路桥/斜拉桥/大跨度/斜拉索/换索方案/单根更换/受力性能分析/有限元计算Key words
Railway bridge/Sable-stayed bridge/Long span/Stay cable/Cable replacement program/Single cable replacement/Stress analysis/Finite element calculation分类
交通工程引用本文复制引用
张乃乐..大跨度铁路斜拉桥换索方案设计与受力性能分析[J].铁道标准设计,2017,61(4):79-82,4.
