The article addresses the issue of feasibility of strengthening the girders in road bridge superstructures by intensifying the reinforcement of web plates. The article also discloses the need to consider the composite action of concrete and reinforcement for the principal planes of girder web plates in superstructures. A methodology for calculating the effectiveness of the proposed superstructure reinforcement option is presented in this publication, as well as the results of assessing the stress state of structures according to the standard project of the series 3.503.1-81, reinforced in accordance with the methodology described in this publication. The obtained results confirm the validity and effectiveness of the proposed solutions for strengthening the superstructure, as well as the validity and applicability of the methodology which helps to consider the composite action of concrete and reinforcement in girder web plates in road bridge superstructures.
The article provides an assessment of the effectiveness of technical solutions to strengthen the beams of spans of road bridges and indicates the advantages of using alternative reinforcement options in comparison with known solutions. The necessity of considering the collaboration of concrete and reinforcing elements on the principal planes of the webs of beams of the span is revealed. A method for determining the period of serviceability of a span is presented, as well as the dependence of this parameter on the strength characteristics of concrete beams. Calculated data are presented that allow critically assessing the effectiveness and the possibility of using various options for increasing the period of serviceability of the span of road bridges. The obtained results allow drawing conclusions about the validity and effectiveness of the proposed solutions for strengthening the span, as well as the prospects for using typical structures of previous generations in modern operating conditions.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.