ABSTRACT:
This project focuses on the structural analysis of suspension bridges, particularly examining the alignment and performance of cables, which are critical components in ensuring the bridge’s stability. Suspension bridges are highly susceptible to cable failure due to various factors such as corrosion caused by climate change, friction between cables at joints, and fatigue from continuous load cycles. These failures can lead to the depletion of the cable’s structural integrity, reducing its resistance and potentially causing catastrophic consequences. Using STAAD PRO software, the study simulates the design of a suspension bridge under static and dynamic loading conditions, including earthquake analysis and the IRC 6-2014 moving load specifications. The research specifically investigates the effects of cable loss due to corrosion, comparing the outcomes in different cable layouts—mixed type, harp type, and fan type. A parametric study is conducted to assess how variations in cable layout influence cable forces and vertical displacements at different points, particularly focusing on the effects of cable loss. The results show that the loss of cables at the middle or far section from the pylon has a more significant impact on the overall bridge performance compared to cable loss near the pylon, highlighting the need for careful cable alignment and maintenance in suspension bridge design.
Aim:
The aim of this project is to analyze the structural integrity and performance of suspension bridges, with a specific focus on the alignment, failure, and corrosion of the suspension cables. The project seeks to investigate the effects of cable loss due to corrosion, friction, and fatigue on the overall stability of the bridge, using advanced modeling software like STAAD PRO. It aims to perform a detailed parametric study by varying different cable layouts (mixed type, harp type, and fan type) to assess the impact of cable loss on cable forces, nodal vertical displacements, and the bridge’s overall performance under static and dynamic loading conditions, including earthquake analysis. The ultimate goal is to understand the critical effects of cable failure, especially at different distances from the pylon, and to develop better design and maintenance strategies to ensure the longevity and safety of suspension bridges.
objective:
The objective of this project is to analyze the structural performance of suspension bridges, focusing on the alignment and failure of suspension cables, which are critical to the bridge’s stability. Using STAAD PRO software, the study aims to evaluate the impact of cable loss due to factors such as corrosion, friction, and fatigue, on the overall bridge performance under static and dynamic loading conditions, including earthquake analysis and IRC 6-2014 moving load standards. A parametric study will be conducted to compare different cable layouts (mixed type, harp type, and fan type) and their effects on cable forces, vertical displacements, and bridge stability. The research will also assess the significance of cable loss at varying distances from the pylon, with a focus on how failures further from the pylon lead to more substantial performance degradation. Ultimately, the goal is to provide insights for optimizing cable design and maintenance strategies to improve the safety, durability, and performance of suspension bridges.
