Liberty Bridge Fire Response: Assessment of Fire Damage and Jacking Operations on the Bridge Rating

摘要

As part of the emergency response, a global 3D analysis of the Liberty Bridge was performed to evaluate the capacity of the bridge after fire damaged a bottom compression chord member. The analysis results were combined with calculated capacities and field measurements of strain and displacement to produce real-time ratings of the main trusses during jacking. Based on the results, the bridge was reopened to traffic following jacking operations.