Banca de DEFESA: André Colares Policarpo

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : André Colares Policarpo
DATE: 27/02/2024
TIME: 14:30
LOCAL: Online via plataforma Teams
TITLE:

 

DYNAMIC PERFORMANCE OF THE STANDARD FOOTBRIDGE PROJECTS PROPOSED BY THE NATIONAL DEPARTMENT OF TRANSPORTATION INFRASTRUCTURE (DNIT)

KEY WORDS:

Footbridge. Vibrations. Dynamic performance. Numerical Analysis

PAGES: 100
BIG AREA: Engenharias
AREA: Engenharia Civil
SUBÁREA: Estruturas
SPECIALTY: Mecânica das Estruturas
SUMMARY:

 

Based on the urbanization of regions close to federal highways, the National Department of Transport Infrastructure (DNIT) published, through the Transport Research Institute (IPR), the typical project album for mixed walkways. The IPR-748 publication, which presents the projects, aims to speed up the contracting and construction of these structures, bringing safety and comfort to highway users. In the present work, these structures are analyzed from a dynamic point of view to estimate their natural frequencies, as well as the accelerations induced by pedestrians. Aiming to obtain the dynamic characteristics of these walkways, numerical models are developed using the ANSYS software to obtain the data, which will later be compared with the methodologies prescribed in NBR 7187:2021 and other international regulations that version on the subject. The study in question aims to qualify the dynamic performance of these structures, to certify compliance with Annex C of the aforementioned NBR and the absence of problems with excessive vibration and other discomfort to the user. As a result, it was observed that the proposed walkway presents a natural frequency in the resonant frequency spectrum and that problems related to excessive vibration may occur for certain load configurations of the structure.

COMMITTEE MEMBERS:
Presidente - 1225412 - GRACIELA NORA DOZ DE CARVALHO
Interno - ***.843.298-** - JOSE LUIS VITAL DE BRITO - UnB
Externa ao Programa - 2213675 - SUZANA MOREIRA AVILA - UnBExterno à Instituição - MURILO LIMEIRA DA COSTA NETO