Developmental Study on Dynamically Stable Cable Systems

动态稳定电缆系统的发展研究

基本信息

批准号：
07555438
负责人：
YAMAGUCHI Hiroki
金额：
$ 0.83万
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：
1995
资助国家：
日本
起止时间：
1995 至 1996
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07555438/
关键词：
Cable System Cable-Stayd Bridge Catwalk System Transmission Line Dynamic Stability Damping

项目摘要

A crossing rope system has been applied to stay cable in cable-stayd bridges in order to control their wind-induced vibrations. In case of suspension bridges, on the other hand, a new cable system without storm rope has been studied to simplify the catwalk system for main-cable erection. The main objective of this study is, therefore, to investigate the possibility of developing new cable system which is dynamically stable. The results obtained from the study are summarized as follows.1.The modal damping of cable system in cable-stayd bridges was evaluated by model experiment and numerical analysis. The damping effect of the crossing rope system is mainly clarified.2.The analytical method for the damping evaluation based on the energy representation of modal damping was proposed and applied to three different types of long-spanned cable-stayd bridges ; Ikuchi Bridge with composite box-girders, Yokohama Bay Bridge with truss girder and Tsurumi Tsubasa Bridge with the stay-cable system in single plane. The modal damping ratios for different modes of each bridge were evaluated and compared with the field-measured values. The high potential of the analytical evaluation of the damping characteristics was shown through these damping analyzes. The relation between modal damping of cable-stayd bridge and its cable system was also discussed.3.The dynamic characteristics of catwalk system was investigated by a series of experiments with simplified models. Not only the modal damping of the cable system in the linear response but also the effect of nonlinear behavior on the dynamic stability of the system were measured in the experiment.

为了控制其风引起的振动，已经应用了一个交叉绳系统将电缆保持在电缆板桥上。另一方面，如果有悬架桥梁，已经研究了一个新的电缆系统，以简化走道系统的主孔系统。因此，这项研究的主要目的是研究开发动态稳定的新电缆系统的可能性。从研究中获得的结果总结如下。1。通过模型实验和数值分析评估了电缆系统中电缆系统的模态阻尼。交叉绳索系统的阻尼效应主要阐明。2。提出了基于模态阻尼的能量表示的阻尼评估的分析方法，并应用于三种不同类型的长跨度的电缆stayd桥。 Ikuchi桥，带有复合盒钉子，横滨湾桥，带桁架梁和Tsurumi Tsubasa桥，带有单个飞机的逗留系统。评估了每个桥的不同模式的模态阻尼比，并将其与场测量值进行比较。通过这些阻尼分析显示了对阻尼特性的分析评估的高潜力。还讨论了电缆桥桥的模态阻尼及其电缆系统之间的关系。3。走秀系统的动态特征通过一系列具有简化模型的实验研究了。在实验中测量了电缆系统在线性响应中的模态阻尼，而且非线性行为对系统动态稳定性的影响。