Banca de DEFESA: Felipe Carvalho Silva Santos

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : Felipe Carvalho Silva Santos
DATA : 20/02/2018
HORA: 17:00
LOCAL: Centro Federal de Educação Tecnológica de Minas Gerais
TÍTULO:

OPERATIONAL MODAL ANALYSIS OF MONTESE VIADUCT: FINITE ELEMENT MODEL UPDATING AND COMPARISON WITH STATIC LOAD TEST. 

PALAVRAS-CHAVES:

Operational Modal Analysis; Non-destructive rehearsal; Model Calibration; Static Load Test; Bridge dynamic analysis.

PÁGINAS: 102
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Civil
SUBÁREA: Estruturas
ESPECIALIDADE: Mecânica das Estruturas
RESUMO:

Operational Modal Analysis is a methodology widely used in order to identify structural modal parameters without interrupting its use. In civil structures, this methodology is used along with a finite element model, which allows structural health monitoring, and damage detection besides of determination of how existent pathology affects structural performance.

In the present work, the Montese Avenue’s viaduct Operational modal analysis is presented. Acceleration was measured in 16 points over superstructure in three orthogonal directions in a 50Hz sampling rate resulting in a 40 hours of measured data. It was employed SSI-COV algorithm in order to identify structure’s natural frequencies. A finite element model of the structure was developed to be calibrated with the frequencies resultants of the modal analysis. This model is going to be tested with a simulation of a static load test, which was performed in the viaduct before traffic liberation.

Both models calibration’s was successfully done. Errors in frequencies are small for several modes, but some modes presented frequencies errors above 10%. Despite static load test simulation results diverge from structural response, we considered model behavior improvement satisfactory due to input data quality.

 

 

MEMBROS DA BANCA:
Presidente - CLAUDIO JOSE MARTINS
Interno - ELIENE PIRES CARVALHO
Interno - RENATA GOMES LANNA DA SILVA
Externo à Instituição - WALNORIO GRACA FERREIRA - UFES