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Structural reliability assessment based on optical monitoring system: case study
| IBRACON Structures and Materials Journal
Structural reliability assessment based on optical monitoring system: case study
Esequiel Fernandes Teixeira Mesquita
Faculdade de Engenharia da Universidade do Porto
Paulo Antunes
Instituto de Telecomunicações de Aveiro
Abel Henriques
Faculdade de Engenharia da Universidade do Porto
Antonio Arede
Faculdade de Engenharia da Universidade do Porto
Paulo Andre
Instituto Superior Técnico de Lisboa
Humberto Varum
Faculdade de Engenharia da Universidade do Porto
Abstract
This work aims to present a case study on structural health monitoring focused on reliability assessment and applying data collected by a simplified optical sensing system. In this way, an elevated reinforced concrete water reservoir was instrumented with a bi-axial optical accelerometer and monitored since January 2014. Taking into account acceleration data, the natural frequencies and relative displacements were estimated. The reliability analysis is performed based on generalized extreme values distribution (GEV), and the results are compared with another two probabilistic methods, namely normal probabilistic distribution and lognormal probabilistic function. The results show that the optical system combined with GEV analysis, implemented in this experimental work, can provide adequate data for structural reliability assessment.
Author Biography
Esequiel Fernandes Teixeira Mesquita, Faculdade de Engenharia da Universidade do Porto