Use of Instrumentation to Quantify Dynamic Movements of Bridge Substructures

摘要

This paper explores a structural health monitoring case study regarding the use of digital inclinometers to quantifysuspected dynamic movements of steel bridge bents under vehicular loading. The bridge involved in this studyhad a history of expansion joint distress and anecdotal evidence of dynamic substructure movements. Theresults of the monitoring indicate that the bents are experiencing rigid body rotations and torsional deformations.The results are being used to inform a rehabilitation project to provide additional bearing restraint.