Experimental tests of post-tensioned girders strengthened with prestressed CFRP composites
Michał Staśkiewicz
Department of Concrete Structures; Faculty of Civil Engineering, Architecture and Environmental Engineering; Lodz University of Technology (Poland)
Renata Kotynia
Department of Concrete Structures; Faculty of Civil Engineering, Architecture and Environmental Engineering; Lodz University of Technology (Poland)
https://orcid.org/0000-0002-7247-1229
Julien Michels
EMPA Swiss Federal Laboratories for Materials Science and Technology (Switzerland)
https://orcid.org/0000-0002-9689-0890
Christoph Czaderski
EMPA Swiss Federal Laboratories for Materials Science and Technology (Switzerland)
https://orcid.org/0000-0003-0153-3944
Masoud Motavalli
EMPA Swiss Federal Laboratories for Materials Science and Technology (Switzerland)
Abstract
The paper presents a research carried out within the framework of the Polish-Swiss “Tulcoempa” project, carried out by Lodz University of Technology and EMPA Swiss Federal Laboratories for Materials Science and Technology. The main goal of the project was to perform the first field application of an innovative, anchorless flexural strengthening with use of prestressed CFRP laminates on an existing bridge in Poland. Laboratory tests were conducted to verify the efficiency of the strengthening of two real-scale, 18.4m long, post-tensioned bridge girders reconstructed at EMPA institute. Flexural strengthening was successful and resulted in an increase of the member’s load capacity by 24% and reduction of the midspan deflection by more than 60%.
Keywords:
strengthening, flexure, bridge girder, post-tensioning, prestressing, CFRP, laminateReferences
Stoecklin, I., Meier, U. Strengthening of concrete structures with prestressed and gradually anchored CFRP strips. Materiały konferencyjne FRPRCS-6, Singapore, 2003.
DOI: https://doi.org/10.1142/9789812704863_0127
Google Scholar
Kotynia, R., Walendziak, R., Stoecklin, I., Meier, U. RC Slabs strengthened with prestressed and gradually anchored CFRP strips under monotonic and cyclic loading. Journal of Composites for Construction 15 (2011) 168-180.
Google Scholar
Michels, J., Sena-Cruz, J., Czaderski, C., Motavalli, M. Structural strengthening with prestressed CFRP strips with gradient anchorage. Journal of Composites for Construction 17(5) (2013) 651-661.
DOI: https://doi.org/10.1061/(ASCE)CC.1943-5614.0000372
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Authors
Michał StaśkiewiczDepartment of Concrete Structures; Faculty of Civil Engineering, Architecture and Environmental Engineering; Lodz University of Technology Poland
Authors
Renata KotyniaDepartment of Concrete Structures; Faculty of Civil Engineering, Architecture and Environmental Engineering; Lodz University of Technology Poland
https://orcid.org/0000-0002-7247-1229
Authors
Julien MichelsEMPA Swiss Federal Laboratories for Materials Science and Technology Switzerland
https://orcid.org/0000-0002-9689-0890
Authors
Christoph CzaderskiEMPA Swiss Federal Laboratories for Materials Science and Technology Switzerland
https://orcid.org/0000-0003-0153-3944
Authors
Masoud MotavalliEMPA Swiss Federal Laboratories for Materials Science and Technology Switzerland
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