Study on Dynamics and Control of Structures with Identical Structural Members

相同结构构件的结构动力学与控制研究

• 批准号: 10450170
• 负责人: YAMAGUCHI Hiroki
• 金额: $ 0.96万
• 依托单位: Saitama University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10450170/
• 关键词: Structural System; Substructure; Earthquake-Induced Oscillation; Wind-Induced Oscillation; Modal Damping; Viaduct System; Cable System; Cable-Stayed Bridge; モード減衰; 送電線システム; 斜張橋; パッシブ振動制御; 部分構造連成; 振動減衰; 吊形式橋梁; 送電線

The main objective of this study is to discuss the dynamic characteristics and passive control of structures with several numbers of identical members paying attention to sub-structural coupling. The contents of the present study are summarized as follows.1. Vibration control by sub-structural coupling : A cable system model for two identical catwalk system with a secondary cable was studied analytically and experimentally. It is concluded that the modal damping of system can be made higher by means of internal resonance among substructures.2. Dynamics of parallel hangers in suspension bridge : The effectiveness of a viscous damper for reducing wind-induced oscillations of parallel hangers was checked by conducting the complex eigenvalue analysis from the viewpoint of sub-structural coupling.3. Galloping analysis of transmission line system : The galloping analysis of multi-span transmission line was conducted to investigate the possibility of sub-span-coupled galloping and the model selection. The mode localization due to slight difference in sub-span length was also discussed.4. Sub-structural behavior in earthquake-induced oscillations of viaduct. The effect of sub-structural response on the global system response was discussed by conducting the eigenvalue analysis and the nonlinear dynamic response analysis for both global model and sub-structural model.5. Damping effect of coupled cable oscillation in cable-stayed bridge : The damping analysis based on the sub-structural method was conducted for the Tatara Bridge. It is concluded that the coupled cable oscillation can reduced the modal damping of cable-stayed bridges.

本研究的主要目的是讨论具有多个相同构件的结构的动力特性和被动控制，并关注子结构耦合。本研究的主要内容如下： 1．通过子结构耦合进行振动控制：对两个带有辅助缆索的相同猫道系统的缆索系统模型进行了分析和实验研究。得出的结论是，通过子结构之间的内部共振，可以提高系统的模态阻尼。 2．悬索桥并联吊架的动力学：通过从子结构耦合的角度进行复特征值分析，检验了粘滞阻尼器减少并联吊架风振的有效性。3．输电线路系统舞动分析：对多跨输电线路进行舞动分析，探讨子跨耦合舞动的可能性及模型选择。还讨论了由于子跨长度的微小差异而引起的模态局域化。 4．高架桥地震引起的振动中的子结构行为。通过对全局模型和子结构模型进行特征值分析和非线性动力响应分析，讨论了子结构响应对系统整体响应的影响。 5．斜拉桥耦合索振动阻尼效应：对塔塔拉桥进行了基于子结构法的阻尼分析。结果表明，耦合索振动可以降低斜拉桥的模态阻尼。

项目成果

H.Yamaguchi,X.Xie & T.Yukino: "Galloping of overhead transmission lines with bundled multiple conductors"Proc.of the 10th Int.Conf.on Wind Eng.. 615-622 (1999)

H.山口,谢X.

Md.Alauddin & H.Yamaguchi: "Control of cable vibration through interaction among main amd secondary cables"Proc.of the 2nd World Conf.on Structual Control. Vol.2. 1303-1312 (1999)

阿劳丁博士

H.Yamaguchi,X.Xie & T.Yukino: "Galloping analysis of transmission lines with bundled conductors"Proc.of the 3rd Int.Symp.on Cable Dynamics. 61-66 (1999)

H.山口,谢X.

H. Yamaguchi, X. Xie & T. Yukino: "Galloping analysis of transmission lines with bundled conductors"Proc. of the 3rd Int. Symp. on Cable Dynamics. 61-66 (1999)

H.山口、X.谢

N.Poovarodom&H.Yamaguchi: "Mode localization in multispan cable systems" Engineering Structures. 21. 45-54 (1999)

普瓦罗多姆