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Rådeström, S., Andersson, A., Mahir, Ü.-K., Tell, V. & Karoumi, R. (2016). Structural control of high-speed railway bridges by means of fluid viscous dampers. In: 19th IABSE Congress 2016: . Paper presented at 19th IABSE Congress on Challenges in Design and Construction of an Innovative and Sustainable Built Environment (pp. 2535-2542). Zürich, Switzerland
Open this publication in new window or tab >>Structural control of high-speed railway bridges by means of fluid viscous dampers
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2016 (English)In: 19th IABSE Congress 2016, Zürich, Switzerland, 2016, p. 2535-2542Conference paper, Published paper (Other academic)
Abstract [en]

The dynamic response of structures is an important aspect to consider, especially at resonance. Particularly, bridges traversed by trains are at risk, due to the repeated loading with regular interval from the axle and bogie spacings. If the risk of resonance is not accounted for in the design, the vertical acceleration of the bridge deck may exceed the allowed limits of comfort and safety. Hence, alternative, sustainable measures for reducing the vibrations in bridges are required to solve these challenges. This paper presents studies of fluid viscous dampers used to control the dynamic behaviour of high-speed railway bridges. A finite element model is used to investigate the response of an existing bridge, both prior to and after the installation of dampers, and the influence of some parameters on the efficiency of the dampers are analysed. The results from this paper show that the vertical deck acceleration is sufficiently reduced using the proposed solution.

Place, publisher, year, edition, pages
Zürich, Switzerland: , 2016
Keywords
resonance, dynamic response, vibrations, bridges, high-speed trains, damper retrofit
National Category
Other Civil Engineering
Research subject
Civil and Architectural Engineering
Identifiers
urn:nbn:se:kth:diva-205648 (URN)2-s2.0-85018996459 (Scopus ID)978-3-85748-144-4 (ISBN)
Conference
19th IABSE Congress on Challenges in Design and Construction of an Innovative and Sustainable Built Environment
Funder
Swedish Research Council Formas, 2010-1084
Note

QC 20170425

Available from: 2017-04-21 Created: 2017-04-21 Last updated: 2017-11-28Bibliographically approved
Rådeström, S., Tell, V., Ülker Kaustell, M. & Karoumi, R. (2015). Parametric evaluation of viscous damper retrofit for high-speed railway bridges. In: : . Paper presented at Conference of 5th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2015 (pp. 1672-1681). Optical Society of America
Open this publication in new window or tab >>Parametric evaluation of viscous damper retrofit for high-speed railway bridges
2015 (English)Conference paper, Published paper (Refereed)
Abstract [en]

Several of the bridges belonging to the Bothnia Line, located in northern Sweden, do not theoretically fulfil the current design limit for the vertical deck acceleration, when being subjected to high-speed trains. Hence, it is important to find appropriate vibration mitigation strategies that are applicable to railway bridges, in order to reduce the acceleration caused by passing trains. One way of solving this problem is to install external viscous dampers. A finite element solution for damper retrofit of high-speed railway bridges is proposed in this paper. The bridge is modelled as a two-dimensional Euler-Bernoulli beam, with inclined dashpots connected between the superstructure and the abutments. Furthermore, this paper highlights the influence of several parameters on the effectiveness of the dampers.

Place, publisher, year, edition, pages
Optical Society of America, 2015
Keywords
High-speed trains, Passive damping, Railway bridges, Structural dynamics, Viscous dampers
National Category
Infrastructure Engineering
Identifiers
urn:nbn:se:kth:diva-174727 (URN)2-s2.0-84942288018 (Scopus ID)
Conference
Conference of 5th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2015
Note

QC 20151105

Available from: 2015-11-05 Created: 2015-10-07 Last updated: 2015-12-02Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-1284-3641

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