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Reducing Train-Induced Vibrations of Talezang Railway Bridge Using Tuned Mass Damper

Credit to Download: 1 | Page Numbers 10 | Abstract Views: 1059
Year: 2012
COI code: ISAV02_162
Paper Language: English

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Authors Reducing Train-Induced Vibrations of Talezang Railway Bridge Using Tuned Mass Damper

  A.J Zargani - School of Civil Engineering, University of Tehran, Tehran, Iran
A.K Ghorbani-Tanha -
  M.S Marefat - School of Civil Engineering, University of Tehran, Tehran, Iran

Abstract:

Talezang Railway Bridge is located in Lorstan province, Iran in north to south-west railway. The bridge consists of ten spans. In 1986, during Iran-Iraq war, its main span, which has a length of 72 m, was attacked and severely damaged. One year later, damaged span replaced with a steel deck. The deck is straight in plan, but the railway is curved and this causes eccentricity.Excessive vibration was observed during the train passage. Although the bridge was retrofitted in two stages, the problem has not been solved yet, and the trains' speed should be reduced to around 10 km/hr in order to avoid excessive vibration. The present study addressed the effectiveness of tuned mass damper (TMD) in reducing train-induced vibrations of Talezang Railway Bridge. A three dimensional finite-element model of the bridge is developed and dynamic time historyanalyses under train passage in both as-built and passively controlled with TMD are conducted. Sensitivity analyses are performed to demonstrate the effects of the damper parameters on structural response. The results show that considerable reduction in acceleration response of the bridge can be achieved by employing proper TMD

Keywords:

Talezang; Railway Bridge; Vibration; Tuned mass damper

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COI code: ISAV02_162

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Zargani, A.J; A.K Ghorbani-Tanha & M.S Marefat, 2012, Reducing Train-Induced Vibrations of Talezang Railway Bridge Using Tuned Mass Damper, 2nd International Conference on Acoustics and Vibration, تهران, دانشگاه صنعتي شريف, https://www.civilica.com/Paper-ISAV02-ISAV02_162.htmlInside the text, wherever referred to or an achievement of this article is mentioned, after mentioning the article, inside the parental, the following specifications are written.
First Time: (Zargani, A.J; A.K Ghorbani-Tanha & M.S Marefat, 2012)
Second and more: (Zargani; Ghorbani-Tanha & Marefat, 2012)
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Type: state university
Paper No.: 55358
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