| 斜拉拱桥拱肋横撑对动力和稳定性的影响 |
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| 引用本文： | 艾永明,黄平明,钱雪松,杨炳成. 斜拉拱桥拱肋横撑对动力和稳定性的影响[J]. 广西大学学报(自然科学版), 2010, 35(1) |
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| 作者姓名： | 艾永明 黄平明 钱雪松 杨炳成 |
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| 作者单位： | 长安大学桥梁与隧道陕西省重点实验室,陕西,西安,710064;长安大学桥梁与隧道陕西省重点实验室,陕西,西安,710064;长安大学桥梁与隧道陕西省重点实验室,陕西,西安,710064;长安大学桥梁与隧道陕西省重点实验室,陕西,西安,710064 |
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| 基金项目： | 国家自然科学基金青年项目(50808018) |
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| 摘 要： | 运用有限元软件ANSYS对某斜拉拱桥进行动力和稳定性分析,对比分析了横撑数量、形式及布置部位等因素对结构动力和稳定性能的影响。结果表明,斜拉拱桥的面外刚度低于面内刚度,且其横向稳定问题较普通拱桥更为突出;横撑布置方式对斜拉拱桥面外刚度和扭转刚度影响较大,对面内刚度影响很小;拱顶横撑质量对结构动力和稳定性能的影响较其刚度大,此处不宜采用米字撑;增大除拱顶外其他部位横撑刚度对提高结构动力和稳定性能的效果比增加横撑数量更为明显,但一定数量的横撑是保证结构横向刚度的前提,且K字撑对动力和稳定性能的影响较米字撑显著。
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| 关 键 词： | 斜拉拱桥 有限元法 动力和稳定性能 拱肋横撑 |
Effects of arch rib crossbars on dynamic and stabilization characteristics of cable-stayed arch bridge |
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| AI Yong-ming,HUANG Ping-ming,QIAN Xue-song,YANG Bing-cheng. Effects of arch rib crossbars on dynamic and stabilization characteristics of cable-stayed arch bridge[J]. Journal of Guangxi University(Natural Science Edition), 2010, 35(1) |
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| Authors: | AI Yong-ming HUANG Ping-ming QIAN Xue-song YANG Bing-cheng |
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| Affiliation: | Key Laboratory for Bridge and Tunnel of Shanxi Province;Chang'an University;Xi'an 710064;China |
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| Abstract: | In this paper,finite element (FE) program ANSYS was used to analyze dynamic per-formance and stability of a cable-stayed arch bridge. The influence of structural factors,such as the quantity,formation and arrangement of crossbars,on dynamic and stabilization characteristics were compared and analyzed. The results show that the out-of plane stiffness is weaker than the in-plane stiffness,and the issue of lateral instability is more prominent than that of the common arch bridge. The different crossbar arrange... |
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| Keywords: | cable-stayed arch bridge finite element method dynamic and stabilization characteris-tics crossbar |
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