In this case study presented by an industry professional, we will examine the structural behaviour and performance of a six-span, 281.5 m long bridge that was widened two decades after its original construction. The session will cover the observed transverse deck displacement and bearing distress identified during a routine bridge inspection, with particular focus on the failure of the transversely restrained abutment bearings.
The presentation will further explore the visual assessment findings, bearing inspection observations, and the structural implications of lateral deck movement, parapet spalling, and dowel deformation. In addition, a high-level analytical investigation into the effects of differential creep and shrinkage between the original and widened bridge decks after stitching will be discussed, highlighting the probable mechanisms that led to restraint force development and bearing failure.
Key Takeaways:
⮞ Gain practical insights from a real bridge inspection case study
⮞ Learn the causes of transverse deck displacement and bearing failure⮞ Understand the impact of creep and shrinkage in widened bridges
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