Research on innovative reinforcement of prestressed T-beam bridge

Abstract

Purpose

In order to understand the status of the bridge reinforcement process, the construction process monitoring of the reinforced bridge is carried out. The T-beam bridge was tested using the truck loading test. The displacements and concrete strains of the bridge at mid-span were measured during the test.

Design/methodology/approach

This paper describes an innovative technique, external prestressing, used to strengthen a 36-year-old prestressed T-beam bridge. This paper introduces the construction process of the prestressed reinforcement method, and makes a theoretical analysis of the reinforced bridge through the establishment of the reinforcement model.

Findings

This study showed that the structural capacity and performance of the bridge were enhanced with externally prestressed steel strand strengthening.

Originality/value

The innovative reinforcement method of prestressed T-shaped bridge is put forward, which has guiding significance for similar bridge reinforcement and maintenance.

Citation

Zhang, K., Tianyu, Q., Dachao, L., Xingwei, X., Wu, F. and Liu, X. (2021), "Research on innovative reinforcement of prestressed T-beam bridge", International Journal of Structural Integrity, Vol. 12 No. 6, pp. 922-937. https://doi.org/10.1108/IJSI-11-2020-0117