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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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空间缆索悬索桥主鞍座结构设计与分析
Keywords: 桥梁工程,自锚式悬索桥,有限元,主鞍座,空间缆索
Abstract:
以南京江心洲大桥为工程背景，对空间缆索自锚式悬索桥主鞍座的相关问题进行研究。以大型通用有限元程序为平台，采用二次开发技术，建立精细化有限元模型，在此基础上采用合理的加载模式对其进行空间受力分析，并阐述与空间主鞍座相匹配的主缆切点简化修正方法。结果表明空间主缆在成桥状态对主鞍座横向力的作用会造成鞍槽外侧壁应力大于内侧壁的应力；主缆横向体积力会对主鞍座压紧装置和鞍体产生梯度分布的竖向挤压力；自锚式悬索桥体系转换过程中缆索的几何非线性效应显著，体现在空缆到成桥状态主缆与主鞍座空间切点位置会有较大的变化。
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