ELEVATED PEDESTRIAN CROSSINGS: THE PROBLEM OF DESIGN CHOICE
The article discusses issues related to the urgent problem of ensuring safety on city highways, one of the ways to solve which is the construction of off-street overpasses. The purpose of the study is to substantiate the approach to choosing a constructive version of an elevated pedestrian crossing. The article presents the results of the analysis and systematization of existing structures of spans and gangways of elevated pedestrian crossings. The classification of spans, developed as a result of the analysis, is given according to the principle of power work, support conditions, design complexity, construction technology, convenience for pedestrians. It is proposed, when choosing a constructive version of the elevated passage, to consider it from eight different points of view. Various design options are evaluated from these points of view. An option selection algorithm is proposed. The results of the study can be used in the design of overpasses in dense urban areas.