| Abstract [eng] |
The application of timber and concrete composites in construction is expanding due to their effective mechanical properties. However, the essential challenge in order to ensure the monolithic operation of the structure remains the selection of a suitable interlayer connection and the evaluation of its behavior. In the final master's thesis, a timber-concrete composite beam floor is analyzed, the elements of which are connected by an adhesive connection. The literature review confirmed that adhesive connections, mostly epoxy–based, are considered rigid in engineering calculations due to their minimal deformations. Analytical calculations were performed based on the Eurocode 5 methodology and applying the rigid connection assumption. Normal and tangential (shear) stresses were calculated according to classical mechanics formulas, and deflections were calculated applying Timoshenko beam theory, which evaluates shear deformations. These theoretical results were verified by creating a numerical model in the "Robot Structural Analysis Professional" software environment, which was also based on the rigid connection assumption. In the experimental part, laboratory push-out tests were performed investigating connections with silicate adhesives and their mixtures with pozzolanic materials. Based on the obtained test results, the real slip modulus of the connection was calculated. This experimental value was applied in the "Gamma" method described in Eurocode 5 Annex B in order to refine the theoretical model and evaluate the real behavior of the structure. |
