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Author(s):	Weber, Felix; Distl, Hans
Title:
Abstract:	Im Mai 2010 traten auf der Wolgograd-Brücke windinduzierte Biegeschwingungen mit geschätzten Amplituden bis 40 cm auf. Seit November 2011 wird die Wolgograd-Brücke durch adaptive Massendämpfer bedämpft, deren Frequenz und Dämpfung über geregelte MR-Dämpfer in Echtzeit an die aktuelle Schwingfrequenz der Brücke angepasst sind. Im schlechtesten Fall bedämpft dieses Konzept die Brücke gleich stark wie passive Massendämpfer und in allen übrigen Fällen stärker. Diese Verbesserung ist mit ungefähr nur halb so viel Massendämpfermasse im Vergleich zu passiven Massendämpfern erreicht, was der Bauweise der Brücke entgegenkommt. Real-time controlled tuned mass dampers for Wolgograd Bridge In May 2010, the Wolgograd Bridge underwent wind-induced bending vibrations with estimated amplitudes of up to 40 cm. Since November 2011, the Wolgograd Bridge is mitigated by adaptive tuned mass dampers whose frequency and damping are adjusted to the actual frequency of vibration in real-time by controlled MR dampers. This concept mitigates the bridge in the worst case similarly to and in all other cases better than passive tuned mass dampers. This improvement is achieved by approximately half the mass damper mass compared to passive tuned mass dampers which is a desirable feature for the bridge construction type.
Source:	Beton- und Stahlbetonbau 108 (2013), No. 6
Page/s:	362-372
Language of Publication:	German

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