|Table of Contents|

On-site observation of wind-rain induced vibration of stay cables and its control(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2005年04期
Page:
5-10
Research Field:
Publishing date:
2006-12-20

Info

Title:
On-site observation of wind-rain induced vibration of stay cables and its control
Author(s):
CHEN Zheng-qing
Wind Engineering Experiment Research Center, Hunan University, Changsha 410082, China
Keywords:
stay cable;  wind-rain induced vibration;  on-site observation;  MR damper;  vibration control
PACS:
U441.3
DOI:
-
Abstract:
On-site observation of wind-rain induced vibration of stay cables and its control were studied. A monitoring system for wind-rain induced vibration was built on the Dongting Lake Bridge and has worked for four years. Some new discoveries were obtained in the influence of wind speed, wind direction and rainfall on wind-rain induced vibration and in the vibration shape of stay cables. A method for parameter optimization based on multimode vibration control was presented. To investigate the performance of MR dampers on mitigating cables vibration, both of numerical simulations and field tests were conducted. A new technique of mitigating cables vibration using MR dampers was exploited and applied on the Dongting Lake Bridge in 2002. The observations of the past three years show that the effectiveness of the mitigating vibration is quite well. To avoid thedestruction on purpose of the power supply system to MR dampers, a PMAA-MR damper was developed and successfully fitted on the Hongshanmiao Bridge in Changsha.

References:

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Last Update: 2006-12-20