Evaluation of the effectiveness of prefabricated structures of overpasses in mountain conditions

The article is devoted to the consideration of technologies for construction of spans of bridge structures, namely, railway racks. Being important elements of transport infrastructure, they allow rolling stock not only to overcome existing obstacles in mountainous areas, but also to protect them from negative geological processes occurring in it. Therefore, when designing mountain racks, it is necessary to consider the strong ruggedness of the relief and influence of the features of the geological processes of the mountainous area on the appointment of certain design and technological solutions for the racks. The article discusses the technologies for erecting span structures of the racks, analyzes their advantages and disadvantages through the prism of the expediency of their use in mountainous conditions. On the basis of the analysis carried out at the end of the paper, the authors put forward criteria for evaluating the effectiveness of prefabricated structures used in mountain conditions. Their promising options are noted with using the Zwicky matrix.