In the introduction of this master thesis, an overview of the typological groups of timber – concrete composites and areas of their application were briefly presented and described. As well as their structural features and differences related to composite actions. Based on the insight into the state of the art (standardization and conducted research available from bibliographic sources) an overview of calculation methods (analytical and numerical) was given and the advantages and/or limitations of their application were described and discussed. The focus of this thesis is on the structural analysis of two typological groups - in one group the composite action is achieved exclusively by dowels, and in the other, using notches (or grooves, which implies that the contact edges of constituent parts of the T-section are reshaped) – the second group can but does not necessarily have an additional dowled fastener. These two typological groups were selected due to their differences, considering the possibility of applying the analytical procedure based on the γ – method. Planar numerical models, suitable for any practical application have been made for both groups - so-called strut and tie models. The effectiveness of created numerical models was evaluated in two different instances, in one instance the stiffness of the joint is considered, and in the other, it is completely disregarded. Design analyses (analytical and numerical) were performed only for the short-term composite actions (the effects of long-term loads and rheological behavior of the constituent materials of the composite were left out). The results of experimental and numerical research, available in the literature, were used as a basis for the analysis. The results of the analyses carried out in this thesis were compared with bibliographic data, conclusions were derived and guidelines for practical application were given.