Head of the project: Ing. Gocál Jozef, PhD.        

Research team: Ing. Hlinka Richard, PhD., doc. Ing. Odrobiňák Jaroslav, PhD., Ing. Kekeliak Miloš, Ing. Daniel Ľuboš, PhD.     

Duration: January 2014 – December 2016                   

The use of wood as a building material in Slovakia still lags behind the possibilities arising from good material base, especially in the structures of the transport infrastructure. The project intends to contribute to the wider use of modern combined timber-steel bridge systems by clarifying their actual behaviour with emphasis on the real behaviour of timber-steel joints, which are required to behave as rigid joints in the plane perpendicular to the timberThe use of wood as a building material in Slovakia still lags behind the possibilities arising from good material base, especially in the structures of the transport infrastructure. The project intends to contribute to the wider use of modern combined timber-steel bridge systems by clarifying their actual behaviour with emphasis on the real behaviour of timber-steel joints, which are required to behave as rigid joints in the plane perpendicular to the timberelement. For this purpose, experimental measurements will be performed on laboratory models of the joints as well as on the actual bridge structure, both under static and cyclic load. For optimal design of these joints thecomponent method will be applied, so far used mostly in the design of joints of steel structures. The practical outcome of the project should be recommendations for practical and adequate modelling of timber-steel bridgestructures using standard software for structural analysis.

Head of the project: prof. Ing. Vičan Josef, CSc.

Research team: prof. Ing. Bujňák Ján, CSc., Ing. Gocál Jozef, PhD., Ing. Hlinka Richard, PhD., doc. Ing. Koteš Peter, PhD., doc. Ing. Odrobiňák Jaroslav, PhD., doc. Ing. Pitoňák Martin, PhD., Ing. Jošt Jozef, PhD., Ing. Kekeliak Miloš, Ing. Janík Peter.       

Duration: January 2012 – December 2014                   

New unified European standardisation implemented into the Slovak technical standardisation is only valid for the design of new building structures and bridges. For application in the case of existing structures is not prepared yet. The aim of the project is to create unified methodology of the existing bridge reliability verification and existing bridge complex evaluation based on the sophisticated methods of the engineering and mathematics theory of the reliability using the economic methods of verification of the expended financial costs efficiency. New methodology should be compatible with the unified European standardisation in the field of building structures and bridges and should respect reliability level and structural lifetime of building structures defined by Eurocodes.

Head of the project: prof. Ing. Moravčík Martin, PhD.   

Research team: Ing. Bahleda František, PhD.  

Duration: January 2012 – December 2014                   

An experimental and theoretical study of parameters of interaction between a repaired reinforced concrete structure and strengthening elements at cyclic and long-term loading. The issue is directly related to the short-term tests performed within the former VEGA – project 2/0143/12. The following topics will be solved within the project. An influence of rheological features on deformation and stress state of composite cross-sections of strengthened elements. An influence of a type of the contact repaired/strengthening element on resistance and serviceability. An investigation of a time evolution of the interaction of an element with GFRP sheets or with an overconcreted coupling slab, including a contact type. A failure processes analysis by evaluation of strain energy. A diagnostics and prediction of a failure state by a numerical modelling (ATENA 3D) and a comparison with selected experimental measurements. Generation of a results database with the focus on exploitability at optimisation of an bridge design.

Head of the project: prof. Ing. Moravčík Martin, PhD.   

Research team: doc. Ing. Hroncová Zora, CSc., Ing. Drevený Ivan, PhD., Ing. Kotula Patrik, PhD., doc. Ing. Koteš Peter, PhD., doc. Ing. Brodňan Miroslav, PhD., Ing. Bahleda František, PhD., Ing. Bujňáková Petra, PhD., Ing. Sýkora Marián, PhD.

Duration: January 2012 – December 2014                   

Nowadays, the approaches for effective determination of actual technical condition of exploited concrete structures are very strongly supported. The solving of this theme is connected to other partial works, which will imply the obtaining of the actual structural reliability reserve. First part is related to determination of degradation effects on the concrete structures by means of effects of carbonatisation, chlorides, corrosion of steel bar as well as effects of static and dynamic loads, for example in the form of cyclic loading of bridges. Time dependent effects of hybrid concrete structures represent other significant influence, which follows from building stages of construction or from structures strengthened by FRP materials. Second part will be devoted to synthesis of both aspects represented by resistance and load taken into account together using numerical nonlinear model. Model enables implementation of gathered data resulting from degradation effects studies into realistic structure evaluation.