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Abstract

Shear reinforcement using CFRP present undoubted advantages when compared to traditional methods, such as lesser impact on the initial structure, easier location and high mechanical strength compared to specific weights. For the design of the new shear capacity a failure model is adopted so that there is sufficient compression and traction capacity in the web. This model is applied to the reinforcement of the Madrid-Barcelona-French Border high speed line, with 3mm thick plates with fibres at 45 degrees and 0 degrees with respect to the viaduct axis and dimensions of 1.9 x 7 meters per front wall.

Reinforcement using Carbon Fibre Reinforced Plastics (CFRP) offer potential advantages when compared to traditional methods, the most important being the reduction of disruption on the initial structure, easier (often manual) application and high specific mechanical strength. This paper presents the application of CFRP prep-preg lamination to massive structural elements where shear strength is critical. In order to quantify the new shear capacity and limit loads, a failure model is implemented that defines the limits of compression and traction capacity. This model is then applied to the reinforcement of a bridge box-section viaduct of the Madrid-Barcelona high speed train line. The webs of the box-section were repaired using 3 mm thick plates with fibres placed at 45 degrees and 0 degrees with respect to the viaduct axis and whose final dimensions were 1.9 x 7 metres along the shear web..

Additional information

Authors: GUTIERREZ E, JRC, ISIS (Institute for Systems, Informatics and Safety), Ispra (IT);MIERES J, NECSO;RODRIGUEZ J, NECSO
Bibliographic Reference: An oral report given at: 6th Intal Conference on Deformation Yield and Fracture of Composites. Organised by: The Institute of Materials. Held in: Manchester, UK, 4-5 April, 2001
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