| 空间缆索悬索桥主鞍座结构设计与分析 |
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| 引用本文： | 李建慧,李爱群,袁辉辉,李喜平.空间缆索悬索桥主鞍座结构设计与分析[J].公路交通科技,2009,26(8). |
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| 作者姓名： | 李建慧 李爱群 袁辉辉 李喜平 |
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| 作者单位： | 1. 东南大学混凝土及预应力混凝土结构教育部重点实验室,江苏,南京,210096
2. 中铁第四勘察设计院集团有限公司,湖北,武汉,430063 |
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| 基金项目： | 国家高技术研究发展计划(863计划)，国家杰出青年蕈金资助项目，国家科技支撑计划 |
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| 摘 要： | 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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| 关 键 词： | 桥梁工程 自锚式悬索桥 有限元 主鞍座 空间缆索 |
Design and Analysis of Main Saddle Structure for Self-anchored Suspension Bridge with Spatial Cables |
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| LI Jianhui,LI Aiqun,YUAN Huihui,LI Xiping.Design and Analysis of Main Saddle Structure for Self-anchored Suspension Bridge with Spatial Cables[J].Journal of Highway and Transportation Research and Development,2009,26(8). |
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| Authors: | LI Jianhui LI Aiqun YUAN Huihui LI Xiping |
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| Institution: | 1.Key Laboratory for Concrete and Prestressed Concrete Structures of Ministry of Education;Southeast University;Nanjing Jiangsu 210096;China;2.The 4th China Railway Survey and Design Group Co.;Ltd.;Wuhan Hubei 430063;China |
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| Abstract: | Based on the Jianxinzhou Bridge in Nanjing,the issues related to the main saddle of the self-anchored suspension bridge with spatial cables were studied.Refinement finite element model was established with secondary development technology based on the platform of general finite element program,reasonable load pattern was used for its spatial mechanical analysis,and the spatial main cable tangenty point correction method which matched with the main saddle was also discussed.The result shows that(1) external ... |
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| Keywords: | bridge engineering serf-anchored suspension bridge finite element main saddle spatial cable |
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