International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 12 Issue: 01 | Jan 2025
p-ISSN: 2395-0072
www.irjet.net
Performance Analysis of Cable-Stayed Bridges with Concrete, Steel, and Prestressed Deck Girders Rajeev Patel1, Rahul Satbhaiya2 1M. tech Scholar, Department of Civil Engineering, Infinity Management and Engineering College Sagar M.P.
2Assistant Professor and Head, Department of Civil Engineering, Infinity Management and Engineering College
Sagar M.P. ---------------------------------------------------------------------***--------------------------------------------------------------------prestressed concrete each offer unique advantages and Abstract - Cable-stayed bridges are recognized for their
limitations in terms of structural capacity, economic feasibility, and maintenance requirements. The choice of material impacts critical design parameters, including load distribution, stress behavior, and long-term durability, influencing the overall success of the bridge.
structural efficiency, aesthetic appeal, and versatility in spanning medium to long distances. This study presents a comparative analysis of the structural and economic performance of cable-stayed bridges using three different deck materials: concrete, steel, and prestressed concrete. Employing SAP software for detailed modeling, the analysis evaluates critical structural parameters such as axial forces, bending moments, shear forces, joint displacements, and stresses under identical loading conditions.
1.2 Challenges in Material Selection While each material has distinct benefits, selecting the optimal material for a specific project is challenging due to varying requirements for span length, environmental conditions, and budget constraints. Existing literature often focuses on specific materials or case studies, leaving a gap in comprehensive comparisons under uniform conditions.
The results demonstrate that prestressed concrete decks provide superior structural performance in terms of reduced deflections and stress distribution, making them ideal for longspan bridges. Steel decks offer advantages in lightweight construction and adaptability for complex geometries, while concrete decks remain cost-effective for shorter spans and moderate load conditions. A lifecycle economic analysis reveals that prestressed concrete, despite higher initial costs, offers long-term cost benefits due to its durability and reduced maintenance requirements.
1.3 Research Objectives
This research provides a comprehensive framework for material selection in cable-stayed bridge construction, balancing structural performance with economic considerations. The findings serve as a valuable resource for engineers and designers seeking optimized solutions for modern infrastructure projects.
Keywords: Cable-stayed bridges, prestressed concrete, SAP software, structural performance, economic analysis.
To Assess the bending moments, shear forces, stresses, joint reactions, and displacements for each of the three deck materials.
To Evaluate the suitability of concrete, steel, and prestressed concrete in terms of strength, durability, and overall structural performance.
To Perform a lifecycle cost analysis for each material, considering initial costs, maintenance costs, and the long-term performance of the bridge.
To Identify the most cost-effective and structurally efficient material for different span lengths, load conditions, and environmental factors.
1. Introduction
2. Literature Review
Cable-stayed bridges are a modern solution for medium to long-span construction, characterized by their structural efficiency, aesthetic appeal, and adaptability. The use of tensioned cables connecting the bridge deck to towers allows for efficient load transfer, reducing the need for multiple supports. These bridges are increasingly utilized for their ability to span long distances while maintaining costeffectiveness and durability.
Zhang et al., 2015 presents research on reinforced concrete decks for cable-stayed bridges and highlights its ability to withstand compressive forces efficiently. However, studies also point to its tendency to crack under tensile forces. For instance, Zhang et al. (2015) demonstrated that while reinforced concrete decks are cost-effective, they require additional support, such as prestressing or reinforcement, for longer spans
Klemencic et al., 2016 detailed that High-strength concrete (HSC) has become a more popular choice for
1.1 Significance of Deck Material in Bridge Design The performance of a cable-stayed bridge heavily depends on the material chosen for its deck. Concrete, steel, and
© 2025, IRJET
|
Impact Factor value: 8.315
|
ISO 9001:2008 Certified Journal
|
Page 352