| 独柱双层高架桥墩柱振动台试验研究-Ⅰ:结构动力特性 |
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| 引用本文： | 彭凯,李建中,朱宇,彭天波.独柱双层高架桥墩柱振动台试验研究-Ⅰ:结构动力特性[J].重庆交通大学学报(自然科学版),2009(2). |
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| 作者姓名： | 彭凯 李建中 朱宇 彭天波 |
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| 作者单位： | 同济大学桥梁工程系;重庆交通大学土木建筑学院;安徽省交通规划设计研究院; |
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| 基金项目： | 国家自然科学基金资助项目(50578118,50578168) |
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| 摘 要： | 对独柱双层高架桥墩模型进行了振动台试验,测试和分析了结构水平向动力特性,结果表明:独柱双层高架桥在纵向和横向的对应阶振型形状相似、振型顺序相同;仅取基本振型不足以表征结构主要动力特性;结构高阶振型频率对墩身中上部集中质量的变化较为敏感;墩柱截面开裂会明显降低结构自振频率、增大振型阻尼比,但对结构振型形状和振型顺序影响不大;在偏低的激励强度和振型幅值条件下进行动力特性测试,结构经历强震后的真实损伤状况无法得到准确反映。
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| 关 键 词： | 独柱双层高架桥 振动台试验 动力特性 高阶振型 |
Shaking Table Tests on a Single-Column-Bent Double-Deck Viaduct-Ⅰ Pier Model:Structural Dynamic Properties |
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| PENG Kai,LI Jian-zhong,ZHU Yu,PENG Tian-bo.Shaking Table Tests on a Single-Column-Bent Double-Deck Viaduct-Ⅰ Pier Model:Structural Dynamic Properties[J].Journal of Chongqing Jiaotong University,2009(2). |
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| Authors: | PENG Kai LI Jian-zhong ZHU Yu PENG Tian-bo |
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| Institution: | 1.Department of Bridge Engineering;Tongji University;Shanghai 200092;China;2.School of Civil Engineering & Architecture;Chongqing Jiaotong University;Chongqing 400074;3.Anhui Communications Consulting & Design Institute;Anhui Hefei 230031;China |
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| Abstract: | Shaking table tests were done on a single-column-bent double-deck viaduct pier model with horizontal structural dynamic properties acquired and analyzed,which indicated that: the structure has similar mode shapes and identical mode sequence between corresponding vibration modes in longitudinal and transverse directions;the basic vibration mode alone is insufficient to account for the main horizontal structural dynamic properties;the higher-order modal frequencies are sensitive to the change of lumped mass c... |
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| Keywords: | single-column-bent double-deck viaduct shaking table test dynamic properties higher-order vibration modes |
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