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.

本研究主要目的在探讨具有多个相同杆件之结构在子结构耦合下之动力特性与被动控制。本研究的主要内容如下：1.基于子结构耦合的振动控制：建立了两个相同猫道的拉索系统模型，并对其进行了分析和实验研究。研究表明，子结构间的内共振可以提高系统的模态阻尼.悬索桥平行吊杆的动力特性：从子结构耦合的角度，通过复特征值分析，验证了粘滞阻尼器对平行吊杆风致振动的抑制效果.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。讨论了子跨长度微小差异引起的模态局部化问题.高架桥地震振动的子结构特性。通过对整体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整体系统响应的影响.斜拉桥拉索耦合振动的阻尼效应：以多良大桥为例，进行了基于子结构法的阻尼分析。结果表明，拉索耦合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.

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.

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 and T. Yukino: "Characteristics of galloping in bundled multiple conductors"Proc. the 15ィイD1thィエD1 Symp. Wind Eng.. 563-568 (1998)

H. Yamaguchi、X. Xie 和 T. Yukino：“捆绑多个导体的驰骋特性”Proc. 第 15 届 D1 Symp. 563-568 (1998)

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

马里兰州阿劳丁