同济大学学报（自然科学版）2012，Vol.40Issue(4)：499-507,9.DOI:10.3969/j.issn.0253-374x.2012.04.001
大跨度CFRP缆索悬索桥的抗风稳定性能
Wind Resistance Performance of Long-span Suspension Bridges with CFRP Cables
摘要
Abstract
A research was made of the wind resistance performance of 2 000～5 000 m long suspension bridges with carbon fiber reinforced polymer (CFRP) cables based on nonlinear aerostatic and aerodynamic finite element method. The comparison study shows that the critical aerostatic velocity will decrease but the critical flutter velocity will increase after using CFRP cables, which is caused by the combined effects of cable weight and torsional frequency. In order to improve wind resistance performance, a study was made of a serial of schemes and their effectiveness. The results show that increasing rise-span-ratio is effective) auxiliary cables can be used within 3 000 m or narrower spani for 4 000 m span, central slotted gir der with guard fences can be applied i if the main span is longer than 5 000 m, narrowly slotted or widely slotted section is recommded.关键词
悬索桥/碳纤维/静风稳定/颤振Key words
suspension bridge/carbon fiber/ aerostatic stability/flutter分类
交通工程引用本文复制引用
李扬,肖汝诚..大跨度CFRP缆索悬索桥的抗风稳定性能[J].同济大学学报（自然科学版）,2012,40(4):499-507,9.基金项目
国家“八六三”高技术研究发展计划(2006AA11Z120) （2006AA11Z120）
