Title:
Structural Monitoring and Instrumentation for Steel-Concrete Composite Bridges
Author(s):
Jayaseelan
Publication:
Web Session
Volume:
ws_S23_Jayaseelan.pdf
Issue:
Appears on pages(s):
Keywords:
DOI:
Date:
4/2/2023
Abstract:
This research illustrates in detail the instrumentation of a full-size prototype bridge and structural monitoring of steel bridges built composite with concrete deck. The structural monitoring system used in this research program combines sensors from diverse technologies into a seamless system using a single database and user interface system allowing for real-time data acquisition and analysis. A full-scale laboratory prototype bridge was built with a composite concrete deck and instrumented with an array of sensors to monitor both the short term and long-term performance of the bridge. Synthesis of data collected from the sensors along with analytical computational models that were developed using the measured constitutive properties of concrete, validated the methods for structural monitoring. Concrete strains and temperatures measured from the sensors during and immediately after bridge deck cast provided a good understanding of the early age strains developed in the concrete deck. The research principally used the measured concrete temperatures during heat load testing to predict and validate the thermal strains, stresses, and deflections in bridge decks. The purpose of this paper is to provide a practical means of monitoring bridge performance and offer good experience for implementation and structural monitoring of both laboratory and field bridges.