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New Årsta Railway Bridge: A case study on the long-term Structural Health Monitoring with Fibre Optic Sensors
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.
2011 (English)In: Nordic Concrete Research, ISSN 0800-6377, no 2/2011, 123-142 p.Article in journal (Refereed) Published
Abstract [en]

The New Årsta Railway Bridge was built in 2000-2005. The structure is a unique pre-stressed concrete girder bridge with slender and optimised design. Structural Health Monitoring System was installed on the bridge during construction. One characteristic span is mainly instrumented with several sensors and monitoring is still ongoing.This paper presents the Fibre Optic Sensor system including thermocouples; and their function. Observations, malfunctions and inconvenience during construction, testing and operation are collected, carefully documented and analysed. Strain and temperature data are collected from first casting up to date.Results are highlighted and conclusions are drawn. Recommendations are given, based on the experience gained so far. Furthermore, general, accumulated knowledge about monitoring is given.

Place, publisher, year, edition, pages
2011. no 2/2011, 123-142 p.
Keyword [en]
Concrete bridges, pre-stressing, Structural Health Monitoring, Fibre Optic Sensors, long-term monitoring, creep and shrinkage
National Category
Infrastructure Engineering
Identifiers
URN: urn:nbn:se:kth:diva-80323OAI: oai:DiVA.org:kth-80323DiVA: diva2:496212
Note

Publication No. 44. QC 20120411

Available from: 2012-02-09 Created: 2012-02-09 Last updated: 2017-12-07Bibliographically approved

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