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

基本信息

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

项目摘要

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.

这项研究的主要目的是讨论对结构的动态特征和被动控制，其中几个相同的成员注意次级结构耦合。本研究的内容总结如下1。通过次级结构耦合控制振动控制：两种带有二级电缆的相同时装秀系统的电缆系统模型进行了分析和实验研究。可以得出结论，通过子结构之间的内部共振，可以使系统的模态阻尼更高。2。悬浮桥中平行衣架的动力学：通过从次级结构耦合的角度进行复杂的特征值分析来检查粘性阻尼器对降低平行衣架振荡的有效性。3。传输线系统的疾驰分析：进行了多跨度传输线的疾驰分析，以研究亚跨度耦合的疾驰和模型选择的可能性。还讨论了由于亚跨度长度差异而导致的模式定位。4。地震诱导的高架桥振荡的次级结构行为。通过进行本特征值分析和全球模型和亚阶层模型的非线性动态响应分析，讨论了子结构响应对全球系统响应的影响。5。耦合电缆振荡在电缆固定桥上的阻尼效应：基于塔塔拉桥的基础结构方法的阻尼分析。结论是，耦合的电缆振荡可以减少电缆固定桥的模态阻尼。