Head of the project: Ing. Križma Martin CSc.     

Research team: prof. Ing. Moravčík Martin, PhD., Ing. Tesár Alexander DrSc., Ing. Bahleda František, PhD., Ing. Potočníková Alena, PhD., Ing. Jerga Ján CSc., Mgr. Petržala Jaromír PhD.              

Duration: January 2015 – December 2018                             

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. Bujňák Ján, CSc.

Research team: prof. Ing. Vičan Josef, CSc., Ing. Hlinka Richard, PhD., doc. Ing. Odrobiňák Jaroslav, PhD., Ing. Bahleda František, PhD., Ing. Idunk Róbert, Ing. Farbák Matúš, PhD.        

Duration: January 2014 – December 2016                             

Composite steel and concrete beams are presently applied in several structural systems including industrial and office buildings. Thanks to combination of the advantageous material properties of both basic materials important increase of the structural element resistance in comparison with classical steel and reinforced concrete beams of the same parameters, effectiveness of this type of beams are achieved. These advantages represent the principal reason for remarkable increase of application of this type of beams in bridge engineering within developed countries. The main objective of the project is a research of the composite structures and bridges in the fields where the more significant simulation of their real behaviour are still missing. Actually, a problem of local transfer of shear forces from the truss nodes into the concrete slab is not adequately developed. Non-linear behaviour of the bridges with embedded beams represents the second research domain, till now, just partially investigated.

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.