| 大跨径悬索桥无抗风缆猫道动力特性分析 |
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| 引用本文： | 李胜利,欧进萍. 大跨径悬索桥无抗风缆猫道动力特性分析[J]. 公路交通科技, 2009, 26(4) |
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| 作者姓名： | 李胜利 欧进萍 |
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| 作者单位： | 1. 哈尔滨工业大学,土木工程学院,黑龙江,哈尔滨,150090
2. 哈尔滨工业大学,土木工程学院,黑龙江,哈尔滨,150090;大连理工大学,土木水利学院,辽宁,大连,116024 |
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| 基金项目： | 国家自然科学基金重点项目，国家科技支撑计划重点项目 |
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| 摘 要： | 采用理论建模和ANSYS有限元预应力索结构模态分析的研究方法,对大跨径悬索桥无抗风缆猫道动力特性进行了研究,理论推导了无抗风缆猫道1阶竖向、侧向和扭转振动频率公式,数值分析了桥塔、矢跨比、横向天桥、材料性能及联结索等参数对猫道振动特性的影响.结果表明:桥塔对猫道自振频率影响很小;猫道的振动频率随着矢跨比的增加而呈减小的趋势;横向天桥的位置和个数对猫道低阶频率影响很小,对高阶频率有一定影响;平行索对猫道频率几乎无影响,交叉索对猫道低频影响很小,对扭转频率有一定提高;CFRP与钢承重绳猫道的自振频率差别不大,却能大大降低对卷扬机等施工机具的要求.
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| 关 键 词： | 桥梁工程 悬索桥 有限元法 动力特性 无抗风缆猫遭 |
Analysis of Dynamic Behavior of Catwalks of Long-span Suspension Bridge without Wind-resistant Cable |
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| LI Shengli,OU Jinping. Analysis of Dynamic Behavior of Catwalks of Long-span Suspension Bridge without Wind-resistant Cable[J]. Journal of Highway and Transportation Research and Development, 2009, 26(4) |
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| Authors: | LI Shengli OU Jinping |
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| Affiliation: | 1.School of Civil Engineering;Harbin Institute of Technology;Harbin Heilongjiang 150090;China;2.School of Civil and Hydraulic Engineering;Dalian University of Technology;Dalian Liaoning 116024;China |
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| Abstract: | On the basis of methods of theoretical modeling and finite element mode analysis for prestressed cable structure with ANSYS,the dynamic behavior of the catwalks of long-span suspension bridge without wind-resistant cable was studied.The vibration frequencies of the first order vertical and side directions,and the first order torsional frequency of the catwalks were derived.The influence of the related parameters included the pylons,the ratio of rise to span,the transverse overbridge,the material performance... |
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| Keywords: | bridge engineering suspension bridge finite element method dynamic behaviour catwalks without wind-resistant cable |
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