Structural Health Monitoring of a Brazilian Concrete Bridge for Estimating Specific Dynamic Responses

A 3D coupled model to simulate vehicle–bridge interactions (VBI) to estimate its structural responses and impact factors (IMs) was developed in this study. By structural health monitoring (SHM) of a real concrete bridge, several data were collected to calibrate the bridge model by the finite element...

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Bibliographic Details
Published in:Buildings (Basel) 2022-06, Vol.12 (6), p.785
Main Authors: Zacchei, Enrico, Lyra, Pedro H. C., Lage, Gabriel E., Antonine, Epaminondas, Soares, Airton B., Caruso, Natalia C., de Assis, Cassia S.
Format: Article
Language:English
Subjects:
Brazilian bridge
Case studies
Concrete
concrete bridge
Concrete bridges
Finite element method
IM factors
Impact factors
Mathematical models
SHM
Structural health monitoring
Structural response
Three dimensional models
VBI
Vehicles
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Summary:A 3D coupled model to simulate vehicle–bridge interactions (VBI) to estimate its structural responses and impact factors (IMs) was developed in this study. By structural health monitoring (SHM) of a real concrete bridge, several data were collected to calibrate the bridge model by the finite element method (FEM). These models provide the bridge response in terms of vertical displacements and accelerations. VBI models provide reliable outputs without significantly altering the dynamic properties of the bridge. Modified recent analytical equations, which account for the effects of the asymmetric two-axle vehicles, were developed numerically. These equations, plus some proposed solutions, also quantified the vehicle response in terms of accelerations to estimate a more conservative driving comfort. The goal consisted in fitting the SHM with numerical and analytical models to find a more appropriate response for safety purposes and maintenance. From the codes and the literature, it was shown that a unique IM factor was not found. Moreover, most approaches underestimate the phenomena; in fact, results show that a monitored IM factor is 2.5 greater than IM from codes. Proposed equations for vehicle accelerations provided more conservative values up to about three times the standard comfort value.
ISSN:2075-5309
2075-5309
DOI:10.3390/buildings12060785