A system of steel-elastomer sandwich plates for strengthening orthotropic bridge decks |
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Authors: | M Feldmann G Sedlacek A Geßler |
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Institution: | 1.Lehrstuhl für Stahlbau und Leichtmetallbau,Rheinisch-Westf?lische Technische Hochschule (RWTH),Aachen,Germany |
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Abstract: | The use of a sandwich plate system (SPS) composed of two steel plates with a solid polymer (polyurethane) core has been introduced
as a refurbishment procedure for steel decks of bridges, the so-called orthotropic decks consisting of a deckplate with longitudinal
stiffeners and transverse crossbeams. Unfortunately, a great many of existing steel bridges still have structural members
that do not comply with the recommendations given in design codes, and therefore damages have developed in them. For a satisfactory
refurbishment of the bridges, the SPS technique fulfils all necessary requirements. To this end, both experimental and calculative
investigations were carried out at RWTH Aachen to demonstrate the reinforcing and stiffening effect and to prove the suitability
of the SPS-overlay technique for general use. The practical applicability of a SPS has been tested successfully in a pilot
project for a German motorway bridge under severe traffic.
Russian translation published in Mekhanika Kompozitnykh Materialov, Vol. 43, No. 2, pp. 271–282, March–April, 2007. |
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Keywords: | orthotropic steel bridge deck elastomeric sandwich |
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