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| 大跨度中承式钢管混凝土拱桥的面内动力特性分析 | |
| 引用本文： | 周劲草,严志刚,盛洪飞.大跨度中承式钢管混凝土拱桥的面内动力特性分析[J].公路交通科技,2005,22(9):87-89. |
| 作者姓名： | 周劲草 严志刚 盛洪飞 |
| 作者单位： | 1. 广州市新光快速路有限公司,广东,广州,510100 2. 广州市建设投资发展有限公司,广东,广州,510100 3. 哈尔滨工业大学交通科学与工程学院,黑龙江,哈尔滨,150090 |
| 摘 要： | 采用钢管混凝土组合性能指标和纤维单元法建立钢管混凝土空间梁单元,用该单元模拟拱肋弦杆形成空间有限元模型。通过对大量不同跨度大跨度中承式钢管混凝土拱桥的模态分析,得到其面内反对称和对称第一阶振型的振动频率,一些桥梁的计算结果得到了试验数据的验证。根据这些计算结果统计得到反对称和对称基频的简化公式。 |
| 关 键 词： | 纤维单元法 大跨度 钢管混凝土 模态分析 简化公式 |
| 文章编号： | 1002-0268(2005)09-0087-03 |
| 收稿时间： | 2004-05-14 |
| 修稿时间： | 2004年5月14日 |
Planar Dynamic Characteristics Analysis for Long-Span Semi-Supported CFST Arch Bridges |
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| ZHOU Jin-cao,YAN Zhi-gang,SHENG Hong-fei.Planar Dynamic Characteristics Analysis for Long-Span Semi-Supported CFST Arch Bridges[J].Journal of Highway and Transportation Research and Development,2005,22(9):87-89. | |
| Authors: | ZHOU Jin-cao YAN Zhi-gang SHENG Hong-fei |
| Abstract: | CFST composite mechanics parameters and fiber element method were used to create 3D CFST finite element, with which the models of concrete filled steel tube arch bridges were built.Modal analysis was applied on a plenty of long-span semi-supported CFST bridges with different span to get their anti-symmetric and symmetric natural frequencies, and the computational results of some of these bridges agreed with dynamic testing results very well.Their empirical formulas of ann'-symmetric and symmetric natural frequencies were obtained from these computed results. |
| Keywords: | Fiber Element Method Long-span CFST Modal analysis Empirical formulas |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |