Instrumentation, Nondestructive Testing, and Finite-Element Model Updating for Bridge Evaluation Using Strain Measurements

Abstract

A baseline finite element model was developed for bridge management and calibration using nondestructive test data. The model calibration technique was evaluated on the Vernon Avenue Bridge over the Ware River in Barre, Massachusetts. This newly constructed bridgewas instrumented throughout its construction phases in preparation for a static truck load test performed before the bridge opening. The strain data collected during the load test was used to calibrate a detailed baseline finite element model in an effort to represent the 3D system behavior of the bridge. Three methods of load ratings were used and compared: (1) conventional method, (2) conventional method updated by using NDT data, and (3) finite element model calibrated with NDT data. DOI: 10.1061/(ASCE)BE.1943-5592.0000228. © 2012 American Society of Civil Engineers. CE Database subject headings: Bridges; Superstructures; Full-scale tests; Field tests; Nondestructive tests; Strain; Measurement; Finite element method; Load tests; Structural health monitoring. Author keywords: Bridge; Superstructure; Full scale; Field testing; Strain measurements; Finite elements; Model calibration; Load testing; Load rating; Structural health monitoring; SHM.