Browsing by Author "Gemignani, Gianluca"
Now showing 1 - 3 of 3
Results Per Page
Sort Options
Item Development and application of FASSTbridge solution to Jarama bridge (fast and effective solution for steel bridges lifetime extension)(International Association for Bridge and Structural Engineering (IABSE), 2018) Chataigner, Sylvain; Benzarti, Karim; Foret, Gilles; Caron, Jean François; Quiertant, Marc; Zalbide, Maria; Garcia, David; Calderon, Inigo; Pinero, Ignacio; Gemignani, Gianluca; Birtel, Veit; Lehmann, Frank; Wahbeh, Mazen; Boundouki, Rami; Martin, Elena; Sopena, Luis; Weidemueller, Mark; Fischer, Michael; Iborra, Concepcion; E&I SEGURAS Y RESILIENTES; Tecnalia Research & InnovationOne of the goals of sustainable development applied to bridge infrastructure is to provide bridge owners with strengthening solutions that may lead to an increase of existing structures service life. In the case of steel bridges, the assessment of the remaining service life is most often linked to the determination of the structural deterioration caused by corrosion and fatigue. Damage caused by fatigue is very difficult to assess before crack initiation, and is more bound to occur in old structures, for which the phenomenon was not taken into account in design before 1970. In addition, old steel materials present a more brittle behavior. In answer to these challenges, the FASSTbridge project, financed through European Infravation call, aimed at developing a pre-cracking fatigue assessment and strengthening methodology for steel bridges based on the technology of adhesively bonded composite. The proposed article presents some of the results of this project.Item New Biocomposites for Innovative Construction Facades and Interior Partitions(2018-06-20) Astudillo, Julen; Garcia, Miriam; Sacristan, Javier; Uranga, Nayra; Leivo, Markku; Mueller, Michaella; Roig, Inma; Langer, Sarka; Gemignani, Gianluca; Vilkki, Markku; Gijzen, Ger; Silva, Susana; Nuñez, M. A.; Dabek, Michal; Sprenger, Marius; De Elgea, Alberto Ortiz; ECOEFICIENCIA DE PRODUCTOS DE CONSTRUCCIÓNOsirys is a European Research Project where a holistic solution lor façades and interior partitions ready to be applied in building retrofitting and new construction has been developed. The project uses biocomposites as the base material to define different products: a multilayer façade, a curtain wall, a window, and an interior partition. The biocomposites developed have different functionalities able to meet the strictest requisites of the European Building Codes in relation to fire and structural performance, improve indoor air quality through the elimination of VOCs (volatile organic compounds) and microorganisms, increase thermal insulation, and increase the durability of construction elements. The new systems are lighter than traditional ones, leading to reductions in overall weight, thereby reducing implementation costs during both manufacturing and assembly processes, thanks to an industrialised concept that utilises modular elements. The project was developed with the collaboration of 18 European partners (5 research centres. 9 SMEs, 2 large industries, and 2 public bodies). The main activities were devoted to the establishment of requirements, the development of materials, the design of products, the integration of materials into products, the verification of properties by simulation and testing according to EU standards, the integration of products into real buildings, and economic and environmental assessment. The scope of this paper is to provide a general overview of the entire project work and results to demonstrate the feasibility of using biocomposites in envelope solutions with the aim of solving some of the main problems that exist in façade traditional solutions. The project finishes with the implementation of the developments in real buildings as prototypes: further research is required before industrial scale manufacturing of the systems can be launched into the market.Item Preventive Fatigue Strengthening of Steel Structures with Bonded CFRP—Efficiency Demonstration on a Real Bridge(Springer Science and Business Media Deutschland GmbH, 2023) Benzarti, Karim; Chataigner, Sylvain; Wahbeh, Mazen; Boundouki, Rami; Martin, Elena; Sopena, Luis; Zalbide, Maria; Garcia-Sanchez, David; Birtel, Veit; Lehmann, Frank; Gemignani, Gianluca; Benmokrane, Brahim; Mohamed, Khaled; Farghaly, Ahmed; Mohamed, Hamdy; E&I SEGURAS Y RESILIENTESAn important objective of sustainable development applied to bridge infrastructure is to develop and deploy effective strengthening solutions, with a view to increasing the service life of existing structures. Steel bridges are prone to fatigue and their remaining service life can be evaluated after careful diagnosis of induced structural damages. However, it is generally difficult to assess the extend of damage caused by fatigue at an early stage before crack initiation. Besides, old structures are particularly vulnerable to fatigue as old steels exhibit a rather brittle behavior, but most design codes did not take into account fatigue effects before the 1970s. To address these issues, an assessment method and a preventive strengthening solution based on the use of adhesively bonded UHM (Ultra-High Modulus) CFRP (Carbon Fiber Reinforced Polymer) plates were developed and applied to an existing bridge for validation (Jarama bridge owned by the Community of Madrid in Spain). Strain measurement collected during load tests was analyzed to verify that the reinforcement works according to theoretical expectations, and different parameters were studied such as the influence of low traffic during CFRP installation. In the end, this field demonstration provided clear evidence of the efficiency of the developed solution.