3D non-linear FE analysis of a full scale test to failure of a RC Railway Bridge strengthened with carbon fibre bars
|
|
|||||||||||
Bibliographic Details
| Author(s): |
Arto Matti Puurula
(Division of Structural Engineering, Luleå University of Technology, SE-971 87 Luleå, Sweden)
Ola Enochsson (Division of Structural Engineering, Luleå University of Technology, SE-971 87 Luleå, Sweden) Gabriel Sas (Division of Structural Engineering, Luleå University of Technology, SE-971 87 Luleå, Sweden) Thomas Blanksvärd (Division of Structural Engineering, Luleå University of Technology, SE-971 87 Luleå, Sweden) Ulf Ohlsson (Division of Structural Engineering, Luleå University of Technology, SE-971 87 Luleå, Sweden) Lars Bernspång (Division of Structural Engineering, Luleå University of Technology, SE-971 87 Luleå, Sweden) |
||||
|---|---|---|---|---|---|
| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Congress: Challenges in Design and Construction of an Innovative and Sustainable Built Environment, Stockholm, Sweden, 21-23 September 2016 | ||||
| Published in: | IABSE Congress Stockholm, 2016 | ||||
|
|||||
| Page(s): | 2527-2535 | ||||
| Total no. of pages: | 9 | ||||
| Year: | 2016 | ||||
| DOI: | 10.2749/stockholm.2016.2526 | ||||
| Abstract: |
At a full scale loading test to failure a 50 year old concrete railway trough bridge in Örnsköldsvik, in northern Sweden was tested to failure. The test was a part of the European Research Project “Sustainable Bridges” regarding assessment and strengthening of existing bridges. In the project new calculation methods were developed to capture the behaviour of the bridge during increasing load. The bridge was strengthened in bending with rods of Carbon Fiber Reinforced Polymer (CFRP) before the loading test. Failure was reached for an applied load of 11.7 MN by pulling a steel beam placed in the middle of one of the two spans downwards. The achieved failure was a combination of bond, shear, torsion and bending. The developed model, a 3D -non-linear finite element (FE) model with discrete reinforcement, gave accurate accounts of the response of the bridge. The FE calculations show the effect of the strengthening with CFRP and even the effect of the epoxy when using the Near Surface Mounted Reinforcement (NSMR) strengthening method. |
||||
| Keywords: |
bridge strengthening near surface mounted reinforcement (NSMR) bond failure analysis shear ultimate load carrying capacity Full scale test Carbon Fibre Reinforced Polymer CFRP) 3D non-linear finite element analysis
|
||||
