Comparative Analysis of the Effects of Cracking and Corrosion using Numerical Model for Bridge Monitoring System

Abstract

Bridge monitoring system can be used to remotely assess bridge conditions and reduce an inspection gap. Steel box girder bridges suffer from cracking and corrosion damage. A system consists of displacement and strain sensor can be used to monitor these damages. A finite element model of the bridge has been created. A various level of structural damage was introduced to the model in form of cracks in the RC deck, and corrosion in steel girders. Then, a conventional truck load has been applied in the model. Thus, the severity of the damage can be observed based on the deflection and strain value at the critical section of the bridge. As a result, the relationship between damage level and monitoring deflection and strain index has been established. In addition, the proper location of bridge monitoring sensors can be determined by using the result of this study.