Analytical Solutions for Taking into Account Composite Action of Reinforcement and Concrete in the Evaluation of Stresses in the Principal Planes of Girder Web Plates with Prestressed Reinforcement

Abstract

Abstract 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.