Comparative analysis of single plane and double plane cable configuration of extradosed bridge

Abstract

Abstract Extradosed bridges blend features of cable-stayed and prestressed concrete box-girder bridges, offering improved aesthetics, construction cost savings, and enhanced durability. The extradosed design employs an extradosed cable system, which provides robust deck support while maintaining a lower overall profile. Analyzing extradosed bridges entails complex considerations of various factors. This study employs MIDAS Civil software to compare the performance of single-plane and double-plane cable configurations of extradosed bridges under permanent load conditions. Parameters such as deflection, bending moment, and shear force are evaluated and compared. The analysis reveals that the double-plane cable configuration exhibits reduced bending moment and shear force compared to the single-plane configuration, enhancing structural stability. The adoption of a double-plane cable configuration for extradosed bridges demonstrates superior structural stability when subjected to permanent loads. This finding underscores the potential benefits of this design approach, including enhanced safety and longevity.