Wind Resistance Performance of Long span Suspension Bridges with CFRP Cables

doi:10.3969/j.issn.0253-374x.2012.04.001

Home > Archive>Volume 40, Issue 4, 2012 >0499-0507. DOI:10.3969/j.issn.0253-374x.2012.04.001

Wind Resistance Performance of Long span Suspension Bridges with CFRP Cables
DOI:
                        10.3969/j.issn.0253-374x.2012.04.001
                    
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Author:
                        LI YangLI Yang
Department of Bridge Engineering, Tongji University, Shanghai 200092, China;Shanghai Municipal Engineering Design Institute (Group） Co. Ltd., Shanghai 200092, Chin
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XIAO RuchengXIAO Rucheng
Department of Bridge Engineering, Tongji University, Shanghai 200092, China
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Clc Number:U442; U448.25
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Abstract:

以主跨为2 000~5 000 m的悬索桥为研究对象，利用悬索桥静风稳定和颤振稳定的非线性有限元计算方法，分析了CFRP（碳纤维增强塑脂）缆索悬索桥的抗风性能.对比研究指出，采用了CFRP缆索后，静风失稳风速将降低，而颤振失稳风速则略微提高，这是由缆索质量降低和扭转基频提高的综合作用引起的.为了进一步提高CFRP缆索悬索桥的抗风性能，讨论了一系列相应的改善措施，并对其有效性进行了验证.结果表明：增大矢跨比对提高抗风性能有一定的作用；当主跨为3 000 m级或以下时，可以采用辅助拉索；当主跨达到4 000 m级时，可以采用带有稳定板的中央开槽箱梁；当主跨超过5 000 m时，则应采用分离式中央窄断面或宽开槽断面.

Key words:suspension bridge; carbon fiber; aerostatic stability; flutter

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LI Yang, XIAO Rucheng. Wind Resistance Performance of Long span Suspension Bridges with CFRP Cables[J].同济大学学报(自然科学版),2012,40(4):0499~0507

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Received:February 28,2011
Revised:January 09,2012
Adopted:April 18,2011
Online: April 27,2012
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