Cable inspection and remedial work are crucial for maintaining the longevity and safety of large- scale infrastructure using external post-tensioning systems, such as stay cable bridges. Corrosion can significantly compromise the integrity of tensioned steel strands in cables, leading to potential structural failures if not addressed promptly. However, inspecting these cables requires specific knowledge and advanced technology to accurately assess their condition without causing damage. Remedial work, particularly the de-tensioning and replacement of loaded cables, is even more delicate and requires comprehensive consideration from analysis to operation. This paper reviews the current methods for inspecting and repairing cables, highlighting the importance of engineering solutions to meet practical challenges. Case studies on recent cable replacement applications are presented to provide practical insights. These examples illustrate the best practices and successful remediation strategies, offering valuable experience for future engineering applications toward sustainable infrastructure management.
Wang et al. (Wed,) studied this question.
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