| 万米级跨度索网桥结构概念设计 |
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| 引用本文： | 汪正华,陈艾荣.万米级跨度索网桥结构概念设计[J].东南大学学报(自然科学版),2009(Z2). |
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| 作者姓名： | 汪正华 陈艾荣 |
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| 作者单位： | 同济大学桥梁工程系; |
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| 基金项目： | 国家自然科学基金资助项目(59895410) |
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| 摘 要： | 从概念设计出发,提出一种新型索网承重式桥梁,通过改变缆索体系,增加桥梁的总体刚度来提高超大跨度桥梁的气动稳定性.鉴于传统材料的强度重量比不足,采用新材料,设计了一座主跨为10km的索网桥,进行了全桥的静力分析,并进一步进行了影响索网桥性能的各个参数的参数设计,包括索网系统布置形式、不同主梁材料等.最后采用非线性有限元方法详细分析了索网桥桥梁的静风稳定性能,为超大跨径索网桥的静风稳定性设计提供依据与参考.计算结果表明,采用新的结构体系和CFRP材料,建造10km跨度的超大跨度桥梁在理论上是可行的,其静风稳定性亦能满足世界上绝大多数台风区的要求.
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| 关 键 词： | CFRP 索网桥 概念设计 静风稳定性 |
Structural conceptual design of cable-network bridge with span of ten thousand meters |
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| Wang Zhenghua Chen Airong.Structural conceptual design of cable-network bridge with span of ten thousand meters[J].Journal of Southeast University(Natural Science Edition),2009(Z2). |
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| Authors: | Wang Zhenghua Chen Airong |
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| Institution: | Wang Zhenghua Chen Airong(Department of Bridge Engineering,Tongji University,Shanghai 200092,China) |
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| Abstract: | From the concept,a new kind of cable-supported bridge was put forward to increase the aerodynamic stability by changing the cable systems and increasing the total stiffness of the bridge.In view of the low ratio of the main cable's intensity to weight,a cable-network bridge with the span of 10 km was designed with new material.Then,static analysis was performed and the parameters affecting the performance of the cable-network bridge,such as cable system distribution,different materials and so on,were discus... |
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| Keywords: | CFRP(carbon fiber reinforced polymer) cable-network bridge structural conceptual design aerostatic stability |
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